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Patentler

  1. Gelişmiş Patent Arama
Yayınlanma numarasıWO2013010459 A1
Yayın türüBaşvuru
Başvuru numarasıPCT/CN2012/078653
Yayın tarihi24 Oca 2013
Dosya kabul tarihi13 Tem 2012
Rüçhan tarihi18 Tem 2011
Yayınlanma numarasıPCT/2012/78653, PCT/CN/12/078653, PCT/CN/12/78653, PCT/CN/2012/078653, PCT/CN/2012/78653, PCT/CN12/078653, PCT/CN12/78653, PCT/CN12078653, PCT/CN1278653, PCT/CN2012/078653, PCT/CN2012/78653, PCT/CN2012078653, PCT/CN201278653, WO 2013/010459 A1, WO 2013010459 A1, WO 2013010459A1, WO-A1-2013010459, WO2013/010459A1, WO2013010459 A1, WO2013010459A1
Buluş SahipleriYijun Xu, 徐一珺, Xiaojuan YE, 叶小娟
Başvuru sahibiZhang, Xichun, 张曦春
Alıntıyı Dışa AktarBiBTeX, EndNote, RefMan
Dış Bağlantılar:  Patentscope, Espacenet
Self-oscillating inverter power supply having variable output frequency slicing and power supply having variable output current
WO 2013010459 A1
Özet
Provided in the present invention is a self-oscillating inverter power supply of reliable operations and reduced costs and having variable output frequency or output power. The power supply is provided with an inverter switching circuit, a coupling circuit consisting of multiple current transformers, a switch, and a load circuit, constituting a self-oscillating inverter power supply circuit. The current transformers are wound with coils on magnetic cores. Primary windings of the transformers are serial-connected or parallel-connected to each other, and respectively are connected to a power switch and load circuit of the inverter switching circuit. Each transformer is provided with two secondary windings, respectively serial-connected or parallel-connected to a base electrode of an upper and a lower power switching tube of the inverter switching circuit. The switch controls some of the current transformers in the coupling circuit consisting of the multiple current transformers to engage in or disengage from self-oscillation to change the self-oscillation frequency. An advantage of this is the provision of the self-oscillating power supply of reliable operations and having variable output frequency or output power, applicable in self-oscillating electronic ballast of a gas-discharge lamp, providing a light-dimming feature and relatively reduced costs. Also disclosed is a power supply having variable output current.
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权利要求书、 一种输出频率分段可变的自激振荡逆变电源, 其特征在于, 该电源设置有逆变开关电路、 多个电流互感器组成的耦合电路、 开关以及负载电路, 构成自激振荡逆变电源电路, 由开关控制多个电流互感器组成的耦合电路中的部分电流互感器参与或退出自激振荡来改变自激振荡频率。 Claims Break variable self-oscillating power inverter, an output frequency, characterized in that the power provided from the inverter switching circuit, the coupling circuit, the switch and a load circuit composed of a plurality of current transformers, constitutes a self- The oscillation power inverter circuit controlled by the switch more than one current transformer coupling circuit current transformer participate or exit the self-oscillation to change the self-oscillation frequency.

、 按权利要求1所述输出频率分段可变的自激振荡逆变电源, 其特征在于, 所述多个电流互感器组成的耦合电路包含至少两个耦合系数互相独立的电流互感器。 , According to claim 1, wherein the output frequency of the self-oscillating inverter power Break variable, characterized in that the coupling circuit comprises at least two coupling coefficients independent of each other of said plurality of current transformers current transformer.

、 按权利要求1所述输出频率分段可变的自激振荡逆变电源, 其特征在于, 所述在电路中设置的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互串联, 分别与逆变开关电路中的功率开关管和负载电路连接; 每个互感器有二个副边绕组, 其中一个互感器的一个副边绕组与另一个互感器的一个副边绕组串联后, 经驱动电阻与逆变开关电路的上功率开关管的基极和发射极连接, 另两个副边绕组串联后经驱动电阻与逆变开关电路下功率开关管的基极和发射极连接, 藉助一开关, 控制至少一个电流互感器参与或退出自激振荡, 以控制电路的振荡频率。 A press as claimed in claim 1, wherein the output frequency of the self-oscillating inverter power Break variable, characterized in that said setting circuit in a plurality of current transformers, the coil is wound on the core, transformer the primary winding in series with each other, respectively connected with the power switches in the inverter switching circuit and the load circuit; each transformer has two secondary windings, wherein a transformer a secondary side winding and another transformer secondary windings are connected in series, after the drive resistor and the inverter switching circuit on the power switch of the base and the emitter electrode connected to another two secondary windings are connected in series after the drive resistor and the inverter switching circuit power switch group and the emitter connected, by means of a switch, controlling the at least one current transformer to participate in or exit the self-excited oscillation to control the oscillation frequency of the circuit.

、 按权利要求3所述的输出频率分段可变的自激振荡逆变电源,其特征在于,所述开关, 并接于一个电流互感器中线圈的原边绕组; 或者并接于一个电流互感器的至少一个副边绕组。 The self-oscillating inverter power supply according to claim 3, wherein the output frequency Break variable, characterized in that said switch and connected to the primary winding of a current transformer coil; or connected in a current at least one of the transformer secondary winding.

、 按权利要求3所述的输出频率分段可变的自激振荡逆变电源, 其特征在于, 在任一个电流互感器中再绕有一个副边控制绕组, 该副边控制绕组由一个开关并接。 , The self-oscillating inverter power supply according to claim 3, wherein the output frequency Break variable, characterized in that, in any one of the current transformer and then wound around a secondary side control winding, the control winding of the secondary side and by a switch connection.

、 按权利要求5所述的输出频率分段可变的自激振荡逆变电源, 其特征在于, 所述副边控制绕组串接一个开关、 或一个电阻, 或一个直流电源。 , Break variable according to claim 5, wherein the output frequency self-oscillating power inverter, wherein said secondary side of the control winding connected in series to a switch, or a resistor, or a DC power supply.

、 按权利要求1所述的输出频率分段可变的自激振荡逆变电源, 其特征在于, 所述在电路中设置的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互串联, 分别与逆变开关电路的功率开关管和负载电路连接; 每个互感器有二个副边绕组, 由开关控制选择连接一个或多个电流互感器的副边绕组分别与逆变开关电路上、 下功率开关管的基极串联连接。 , The self-oscillating inverter power supply according to claim 1, wherein the output frequency Break variable, characterized in that said setting circuit in a plurality of current transformers, the coil is wound on the core, mutual inductance The primary winding in series with each other, respectively connected with the power switch of the inverter switching circuit and the load circuit; each transformer has two secondary windings, secondary windings are connected by one or a plurality of current transformers is selected by the switch control respectively, under the power switch tube base is connected in series with the inverter switching circuit.

、 按权利要求1所述的输出频率分段可变的自激振荡逆变电源, 其特征在于, 所述在电路中设置的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互并联, 由开关控制选择其中一个互感器的原边与逆变开关电路的功率开关管和负载电路连接; 每个互感器有二个副边绕组, 分别串联后分别与逆变开关电路上、 下功率开关管的基极串联连接, 或者分别并联, 由开关控制选择连接一个或多个电流互感器的副边权利要求书绕组与逆变开关电路上、 下功率开关管的基极串联连接。 , The self-oscillating inverter power supply according to claim 1, wherein the output frequency Break variable, characterized in that said setting circuit in a plurality of current transformers, the coil is wound on the core, mutual inductance The primary winding in parallel with each other, wherein the primary side of a transformer and the inverter switching circuit power switch tube and the load circuit is connected by the switch control options; each transformer has two secondary windings, respectively, in series, respectively, after the inverse change the switch circuit, under the power switch base pole connected in series or in parallel, respectively, to connect one or more of the current transformer secondary to claim on the the book winding and inverter switching circuit controlled by a switch, power switch The base is connected in series.

、 按权利要求1所述的输出频率分段可变的自激振荡逆变电源, 其特征在于, 所述开关是机械开关或电子开关。 , According to claim 1, wherein the output frequency of the self-oscillating inverter power Break variable, characterized in that said switch is a mechanical switch or electronic switches.

0、 按权利要求1所述的输出频率分段可变的自激振荡逆变电源, 其特征在于, 自激振荡逆变电源电路在上电启动或收到外来启动命令时, 由控制指令控制开关置于某个确定位置, 以达到一个确定频率。 0, according to claim 1, wherein the output frequency of the self-oscillating inverter power Break variable, wherein the self-oscillating inverter power supply circuit is powered on or when the external start command is received by the control instruction The switch is placed in a determined location, in order to achieve a certain frequency.

1、 按权利要求1所述的输出频率分段可变的自激振荡逆变电源, 其特征在于, 还包括控制模块和采样电路, 通过采样电路采集负载电路的电流采样, 反馈至控制模块, 控制模块控制P丽占空比使开关按占空比打开或闭合,以将电流平均值恒定在目标值附近。 Break variable self-oscillating inverter power supply 1, as claimed in claim 1, wherein the output frequency, characterized in that, further comprising a control module and the sampling circuit, the current sample acquisition and a load circuit through a sampling circuit, the feedback to the control module, The control module controls P Lai duty cycle of the switch duty cycle open or closed to the current average constant around the target. 、 如权利要求1所述的电源, 其特征在于, 还包含整流电路, 外部交流火线和零线经整流后连接至逆变开关电路, 控制模块的信号地连接到整流输出的负端, 将与外部交流火线或零线构成回路并有电压差的任何电压源经过一命令开关以一根导线连接到控制模块的信号输入端, 命令开关闭合时, 控制模块接收到该电压源的电压信号并将该信号看作控制命令,使所述开关闭合或打开,使电路工作于一自激振荡频率或一种按PWM 占空比形成的频率组合, 或使电路按一输出电流目标值工作, 当命令开关断开时, 控制模块将该电压信号的消失看作另一命令, 使所述开关打开或闭合, 使电路工作于另一自激振荡频率或按另一种P丽占空比形成的频率组合, 或使电路按另一输出电流目标值工作。 As claimed in claim 1, wherein the power supply, characterized in that, further comprising a rectifier circuit, an external AC line and neutral after the rectifier is connected to the inverter switching circuit, the control module signal to the negative terminal is connected to the rectifier output, with the external AC FireWire or zero line form a loop and a differential voltage to any voltage source through a command switch is connected to a wire to the control signal input terminal of the module, the command switch is closed, the control module receives a voltage signal to the voltage source and the signal as the control command, so that the switch is closed or open, so that the circuit operates in a self-excited oscillation frequency, or a frequency combination is formed according to the PWM duty cycle, or to make a circuit by an output current target value, when the command when the switch is off, the control module of the voltage signal disappears as another command, and so that said switch is open or closed, the circuit is formed at the other self-excited oscillation frequency, or by another P Lai duty frequency composition, or make the circuit work at another output current target value.

3、 一种气体放电灯电子镇流器,其特征在于,包括如权项1至权项12所述的任意一种自激振荡逆变电源。 3, a gas discharge lamp electronic ballast, characterized in that it comprises as items 1 to Claim 12, wherein any one of the self-oscillating inverter power supply.

、 一种输出电流可变的电源, 其特征在于, 该电源设置有逆变开关电路、 控制模块、 开关、 多个电流互感器、 谐振电感、 谐振电容、 输出整流电路、 以及直流负载, 谐振电感和谐振电容组成串联谐振电路, 谐振电容并接输出整流电路, 输出整流电路的输出并接直流负载, 控制模块按照外部命令使开关闭合或打开, 使至少一个电流互感器参与或退出自激振荡, 来改变自激振荡频率, 以改变输出至直流负载的电流大小。 A variable power supply output current, wherein the power provided from the inverter switching circuit, a control module, a switch, a plurality of current transformer, resonant inductor, resonant capacitor, the output rectifier circuit and a DC load, the resonant inductor series resonant circuit and the resonant capacitor and the resonant capacitor and connected to the output rectifier circuit, the output of the output rectifier circuit and connected to a DC load control module in accordance with an external command so that the switch is closed or open, so that at least one current transformer in or exit the self-excited oscillation, self-excited oscillation frequency is changed to change the size of the output to the DC load current.

5、 如权利要求14所述的电源, 其特征在于, 直流负载包括至少一发光二极管。 A power supply as claimed in claim 14 wherein the wherein the DC load comprises at least one light emitting diode.

6、 如权利要求14所述的电源, 其特征在于, 输出整流电路包含至少一个发光二极管。 A power supply as claimed in claim 14 wherein the wherein the output of the rectifier circuit includes at least one light emitting diode. 7、 如权利要求14所述的电源, 其特征在于, 所述的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互串联后与谐振电感串联连接, 每个互感器有二个副边绕组, 分别串联后驱动逆变开关电路的上、 下功率开关管, 其中一个电流互感器或绕有权利要求书副边控制绕组, 开关并接任一电流互感器的一个绕组, 控制模块使开关打开或闭合, 使该电流互感器参与或退出自激振荡, 以控制电路的振荡频率。 A power supply as claimed in claim 14, wherein said wherein said plurality of current transformers connected in series with the resonant inductor is wound on the core with a coil, transformer primary winding in series with each other, each a transformer with two secondary windings, driving the inverter switching circuit in series respectively the upper and lower power switches, wherein a current transformer or wound claims secondary side control winding, switch and succession a current transformer one of the windings, the control module so that the switch is opened or closed, so that the current transformer participation or exit the self-excited oscillation to control the oscillation frequency of the circuit.

、 如权利要求14至17中任意一项所述的电源, 其特征在于, 控制模块输出PWM信号使开关按PWM信号闭合或断开, 使受开关控制的电流互感器按PWM信号退出或参与自激振荡, 使自激振荡频率按PWM信号的脉宽比在两个频率间切换, 通过改变PWM脉宽比来改变工作于两个自激振荡频率的时间比例, 来改变输出至直流负载的电流的平均值大小。 , As claimed in claim 14 to 17 in any one of said power supply, characterized in that the control module outputs the PWM signal causes the switch to exit the current transformer by the switch control by the PWM signal in accordance with the PWM signal is closed or disconnected or self excited oscillation, the self-oscillation frequency of the pulse width of the PWM signal to switch between the two frequencies to change the proportion of time working on two self-oscillation frequency by changing the PWM pulse width ratio, to change the output current to DC load the average size.

、 如权利要求18所述的电源,其特征在于,还包括将输出电流平均值的采样信号反馈到控制模块的采样模块, 控制模块据采样值和目标值的差异改变其输出PWM信号的脉宽比, 使输出至直流负载的电流的平均值恒定在目标值附近。 A power supply as claimed in claim 18, wherein, wherein, further comprising sampling the output current average signal is fed to the sampling module of the control module, the control module according to the sampled value and the target value of the difference to change the output pulse width of the PWM signal ratio, the average value of the output to the DC load current constant around the target.

、 如权利要求14或18或19所述的输出电流可变的电源,其特征在于,还包含整流电路, 外部交流火线和零线经整流后连接至逆变开关电路, 控制模块的信号地连接到整流输出的负端, 将与外部交流火线或零线构成回路并有电压差的任何电压源经过一命令开关以一根导线连接到控制模块的信号输入端, 命令开关闭合时, 控制模块接收到该电压源的电压信号并将该信号看作控制命令, 使所述开关闭合或打开, 使电路工作于一自激振荡频率或一种按P丽占空比形成的频率组合, 或使电路按一输出电流目标值工作, 当命令开关断开时, 控制模块将该电压信号的消失看作另一命令, 使所述开关打开或闭合, 使电路工作于另一自激振荡频率或按另一种P丽占空比形成的频率组合, 或使电路按另一输出电流目标值工作。 As claimed in claim 14 or 18 or 19, wherein the output current of variable power, wherein, further comprising a rectifier circuit, an external AC line and neutral after the rectifier is connected to the inverter switching circuit, the control module signal ground connection to the negative terminal of the rectifier output, constituting the circuit and a differential voltage to any voltage source to a wire connected to the signal input terminal of the control module, the command switch is closed after a command switch and the external AC FireWire or zero line, the control module receives a a voltage signal to the voltage source and the signal as the control command, so that the switch is closed or open, so that the circuit operates in a self-excited oscillation frequency or frequency combination method according to the P LAI duty cycle is formed, or the circuit according to an output current target value, when the command switch is turned off, the control module of the voltage signal disappears as another command, so that said switch is open or closed, so that the circuit operates in another self-excited oscillation frequency or by another the frequency combination formed by a P Lai duty cycle, or circuit on another output current target value.

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说明书输出频率分段可变的自激振荡逆变电源、 输出电流可变的电源技术领域 Self-excited oscillation power inverter the manual output frequency variable in sub-variable power supply, the output current technical field

本发明涉及一种输出频率分段可变的自激振荡逆变电源, 尤指一种具有调光功能的气体放电灯自激振荡电子镇流器逆变电源及输出电流可变的电源。 The present invention relates to an output frequency sub-variable self-excited oscillation inverter, especially a dimming function gas discharge lamp electronic ballast variable power inverter power supply and output current self-oscillation.

背景技术 BACKGROUND ART

将直流转变成交流的自激振荡逆变电源应用广泛, 特别常见于低成本的气体放电灯自激振荡电子镇流器或电子变压器中。 Self-oscillating inverter and the DC into AC power is widely used, especially common at the low cost of the gas discharge lamp is self-oscillating electronic ballast or transformer. 但是自激振荡逆变电路要实现振荡频率可调或输出功率可调, 则比较困难。 But the self-excited oscillation inverter circuit oscillation frequency is adjustable or adjustable output power, is more difficult to achieve.

美国专利US5596247提出了一种比较简单的自激振荡电子镇流器调光方案, 但该方案将造成半桥上下管的开通时间不同, 使上下管工作在不对称状态, 对电路可靠性带来影响。 U.S. Patent US5596247 proposed a relatively simple self-oscillating electronic ballast dimming program, but the program will result in the opening time of the half-bridge upper and lower tube, the upper and lower tube in the asymmetric circuit reliability affected.

另一美国专利US6696803 披露了一种能可靠工作的可改变工作频率的自激振荡电源方案, 但该方案中辅助电源电压的波动将影响其振荡频率和输出功率, 因此对辅助电源的设计提出了较高的要求, 成本相对较高。 Another U.S. Patent US6696803 disclose a reliable work can change the operating frequency of the self-excited oscillation power program, but the program in the auxiliary supply voltage fluctuations will affect the oscillation frequency and output power, the design of the auxiliary power supply higher requirements, the cost is relatively high.

中国实用新型专利CN91217582. 6提出一种廉价的分段调光自激振荡电子镇流器,该方案设想利用拨动开关短接振荡磁环的不同抽头, 实现分段调光。 Chinese utility model patents CN91217582 propose a cheap sub-dimming electronic ballasts self-oscillation, the program envisages different tap toggle switch short then oscillating magnetic sub-dimming. 但实际上开关短接部分绕组后将大大降低输出电压, 因而无法保证电路的可靠工作。 But actually switch shorting part of the winding will greatly reduce the output voltage, and therefore can not guarantee a reliable operation of the circuit.

发明内容 SUMMARY OF THE INVENTION

为了克服上述不足之处, 本发明的主要目的旨在提供一种能可靠工作的输出频率或输出功率可变的自激振荡电源。 In order to overcome the above deficiencies, the main purpose of the present invention is to provide a reliable working of the output frequency or output power variable self-oscillating power supply.

本发明要解决的技术问题是: 如何使自激振荡逆变电路能工作在不同的振荡频率, 并且能按要求改变工作频率; 当负载电路形成非纯阻性的等效负载时, 若电路能改变工作频率, 就能改变输出功率。 The present invention to solve the technical problem: how to make self-excited oscillation inverter circuit capable of operating at different oscillation frequencies, and can be changed as desired operating frequency; when a purely resistive load circuit equivalent load circuit change the operating frequency, you can change the output power.

通常的自激振荡逆变电路的工作原理, 是利用一个磁环作为电流互感器, 将逆变输出电流耦合到磁环副边用于驱动逆变开关管, 形成自激振荡。 The working principle of the self-oscillating inverter circuit is usually using a magnet as a current transformer, the inverter output current is coupled to the the toroid secondary side for driving the inverter switch tube, to form a self-excited oscillation. 当电路其他部分的参数确定时, 逆变输出电流到磁环副边耦合关系的不同将产生不同的自激振荡频率, 例如磁环的饱和深度不同会导致自激振荡频率不同。 When the rest of the circuit parameters, the inverter output current to the magnetic secondary coupling between the different different self-oscillation frequency, such as magnetic saturation depth will lead to self-oscillation frequency.

基于以上原理, 本发明的目的是这样实现的: Based on the above principle, the purpose of the present invention is achieved in that:

一种输出频率分段可变的自激振荡逆变电源, 该电源设置有逆变开关电路、 多个电流互感器组成的耦合电路、 开关以及负载电路, 构成自激振荡逆变电源电路, 由开关控制多个电说明书流互感器组成的耦合电路中的部分电流互感器参与或退出自激振荡来改变自激振荡频率。 An output frequency Break variable self-oscillating inverter, the inverter switching circuit for the power settings, the coupling circuit, a switch and a load circuit composed of a plurality of current transformers, constitute a self-oscillating inverter power supply circuit, switch control a plurality of electrical manual current transformer coupling circuit current transformer participate or to change the self-oscillation frequency to exit the self-excited oscillation.

所述多个电流互感器组成的耦合电路包含至少两个耦合系数互相独立的电流互感器。 The coupling circuit of said plurality of current transformers contains at least two coupling coefficients are each independently of the current transformer. 所述在电路中设置的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互串联, 分别与逆变开关电路中的功率开关管和负载电路连接; 每个互感器有二个副边绕组, 其中一个互感器的一个副边绕组与另一个互感器的一个副边绕组串联后, 经驱动电阻与逆变开关电路的上功率开关管的基极和发射极连接, 另两个副边绕组串联后经驱动电阻与逆变开关电路下功率开关管的基极和发射极连接, 藉助一开关, 控制至少一个电流互感器参与或退出自激振荡, 以控制电路的振荡频率。 Said setting circuit in a plurality of current transformers, is in the core wound with a coil, the primary winding of the transformer in series to each other, respectively connected with the power switches in the inverter switching circuit and the load circuit; The transformer has two secondary windings, wherein a secondary side of a transformer a secondary side winding and another transformer windings in series, after the base and the emitter electrode of the drive resistor and the inverter switching circuit on the power switch tube connected to the other two secondary windings connected in series after the drive resistor and the inverter switching circuit power switch in the base and the emitter electrode is connected by means of a switch, the control of at least one current transformer participation or exit the self-oscillating control circuit oscillation frequency.

所述开关, 并接于一个电流互感器中线圈的原边绕组; 或者并接于一个电流互感器的至少一个副边绕组。 At least one of said switch and connected to the primary winding of a current transformer coil; or and connected to a current transformer secondary windings.

在任一个电流互感器中再绕有一个副边控制绕组, 该副边控制绕组由一个开关并接。 In any one of the current transformer around the control winding and a secondary winding connected by a switch and the secondary side control. 所述副边控制绕组串接一个开关、 或一个电阻, 或一个直流电源。 Said the control secondary side windings connected in series to a switch, or a resistor, or a DC power supply.

所述在电路中设置的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互串联, 分别与逆变开关电路的功率开关管和负载电路连接; 每个互感器有二个副边绕组, 由开关控制选择连接一个或多个电流互感器的副边绕组分别与逆变开关电路上、 下功率开关管的基极串联连接。 Said setting circuit in a plurality of current transformers, is wound on a core with a coil primary winding of the transformer in series to each other, respectively connected with the power switch of the inverter switching circuit and the load circuit; each mutual inductance There are two secondary windings, controlled by a switch to connect one or more of the current transformer secondary winding and inverter switching circuits, under the base of the power switch pole connected in series.

所述在电路中设置的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互并联,由开关控制选择其中一个互感器的原边与逆变开关电路的功率开关管和负载电路连接; 每个互感器有二个副边绕组, 分别串联后分别与逆变开关电路上、 下功率开关管的基极串联连接, 或者分别并联, 由开关控制选择连接一个或多个电流互感器的副边绕组与逆变开关电路上、 下功率开关管的基极串联连接。 Said setting circuit in a plurality of current transformers, is in the core wound with a coil, the primary winding of the transformer in parallel with each other, wherein the power of a transformer the primary side of the inverter switching circuit controlled by a switch to select the switch and the load circuit connection; each transformer has two secondary windings, respectively in series with the inverter switching circuit, the lower power switch of the base electrode is connected in series or in parallel, respectively, connected by the switching control to select one or current transformer secondary winding and inverter switching circuit, power switch base connected in series.

所述开关是机械开关或电子开关。 Said switch is a mechanical switch or electronic switches.

自激振荡逆变电源电路在上电启动或收到外来启动命令时, 由控制指令控制开关置于某个确定位置, 以达到一个确定频率。 Self-excited oscillation inverter power supply circuit is powered or external start command is received by the control command control switch placed in a defined position, in order to achieve a certain frequency.

较佳地, 还包括控制模块和采样电路, 通过采样电路采集负载电路的电流采样, 反馈至控制模块, 控制模块控制PWM占空比使开关按占空比打开或闭合, 以将电流平均值恒定在目标值附近。 Preferably, further includes a control module and the sampling circuit, the the acquisition load circuit current is sampled by a sampling circuit, the feedback to the control module, control module controls the PWM duty cycle so that the switch is opened or closed according to the duty cycle, the average current constant In the vicinity of the target value.

较佳地, 还包含整流电路, 外部交流火线和零线经整流后连接至逆变开关电路, 控制模块的信号地连接到整流输出的负端, 将与外部交流火线或零线构成回路并有电压差的任何电压源经过一命令开关以一根导线连接到控制模块的信号输入端, 控制模块输出连接开关, 命说明书令开关闭合时, 控制模块接收到该电压源的电压信号并将该信号看作控制命令, 使所述开关闭合或打开, 使电路工作于一自激振荡频率或一种按P丽占空比形成的频率组合, 或使电路按一输出电流目标值工作, 当命令开关断开时, 控制模块将该电压信号的消失看作另一命令, 使所述开关打开或闭合, 使电路工作于另一自激振荡频率或按另一种P丽占空比形成的频率组合, 或使电路按另一输出电流目标值工作。 Preferably also contains a rectifier circuit, the external AC line and neutral after the rectifier is connected to the inverter switching circuit, the control module signal is connected to the negative terminal of the rectifier output will form a loop with an external AC FireWire or zero line and signal input terminal of the differential voltage to any voltage source through a switch command to a wire connected to the control module, the control module output connection switches, command instructions ORDER switch is closed, the control module receives a signal voltage of the voltage source and the signal as control commands, the switch is closed or open, the circuit is in a self-excited oscillation frequency or a formed by P Lai duty cycle, frequency combination, or the circuit by an output current target value when the command switch disconnected, the control module of the voltage signal disappears as another command, so that said switch is open or closed, so that the circuit operates in another self-excited oscillation frequency or frequency combination formed by another P Lai duty , or so that the circuit work press another output current target value.

一种气体放电灯电子镇流器, 包括如上述任意一种自激振荡逆变电源。 A gas discharge lamp electronic ballasts, including a self-oscillating inverter power source, such as any of the above.

一种输出电流可变的电源, 该电源设置有逆变开关电路、 控制模块、 开关、 多个电流互感器、 谐振电感、 谐振电容、 输出整流电路、 以及直流负载, 谐振电感和谐振电容组成串联谐振电路, 谐振电容并接输出整流电路, 输出整流电路的输出并接直流负载, 控制模块按照外部命令使开关闭合或打开, 使至少一个电流互感器参与或退出自激振荡, 来改变自激振荡频率, 改变输出至直流负载的电流大小。 A variable power supply output current of the power supply is provided with the inverter switching circuit, the control module, the switch, the plurality of current transformer, resonant inductor, resonant capacitor, the output rectifier circuit, and the DC load, the composition of the resonant inductor and resonant capacitor in series the resonant circuit, the resonant capacitor and connected to the output rectifier circuit, the output of the output rectifier circuit and connected to a DC load control module in accordance with an external command so that the switch is closed or open, so that at least one current transformer in or exit the self-excited oscillation to change the self-oscillating frequency, change the output to a DC load current size.

较佳地, 直流负载包括至少一发光二极管。 Preferably, the DC load comprises at least one light emitting diode.

较佳地, 输出整流电路包含至少一个发光二极管。 Preferably, the output of the rectifier circuit includes at least one light emitting diode.

所述的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互串联后与谐振电感串联连接, 每个互感器有二个副边绕组, 分别串联后驱动逆变开关电路的上、 下功率开关管, 其中一个电流互感器或绕有副边控制绕组, 开关并接任一电流互感器的一个绕组, 控制模块使开关打开或闭合, 使该电流互感器参与或退出自激振荡, 以控制电路的振荡频率。 Said plurality of current transformers, is wound on a core coil, primary winding of the transformer after each other in series with the resonant inductor are connected in series, each transformer has two secondary windings, respectively, after the series drive inverse varying the switching circuit on the next power switch tube, wherein a current transformer or control winding wound secondary side, the switch and the succession of one winding of a current transformer, the control module so that the switch is opened or closed, so that the current transformer participation or Exit self-oscillation to control the oscillation frequency of the circuit.

较佳地, 控制模块输出PWM信号使开关按P丽信号闭合或断开, 使受开关控制的电流互感器按P丽信号退出或参与自激振荡, 使自激振荡频率按PWM信号的脉宽比在两个频率间切换, 通过改变P丽脉宽比来改变工作于两个自激振荡频率的时间比例, 来改变输出至直流负载的电流的平均值大小。 Preferably, the control module output PWM signal by P Lai signal closed or disconnect switch, current transformer switch control to exit P Lai signal or to participate in the self-oscillation, the self-oscillation frequency of the pulse width of the PWM signal than to switch between the two frequencies by changing the P Lai pulse width ratio to change in two self-oscillation frequency in proportion to the time, to change the output to the average size of the DC load current.

较佳地, 该电源还包括将输出电流平均值的采样信号反馈到控制模块的采样模块, 控制模块据采样值和目标值的差异改变其输出P丽信号的脉宽比, 使输出至直流负载的电流的平均值恒定在目标值附近。 Preferably, the power supply further comprising output current average value of the sampled signal is fed to the control module sampling module, a control module according to the sampled value and the target value of the difference between the pulse width ratio change its output signals P Lai, so that output to a DC load the average current constant in the vicinity of the target value.

所述电源还包含整流电路, 外部交流火线和零线经整流后连接至逆变开关电路, 控制模块的信号地连接到整流输出的负端, 将与外部交流火线或零线构成回路并有电压差的任何电压源经过一命令开关以一根导线连接到控制模块的信号输入端, 控制模块输出连接开关, 命令开关闭合时, 控制模块接收到该电压源的电压信号并将该信号看作控制命令, 使所述开关闭合或打开, 使电路工作于一自激振荡频率或一种按PWM占空比形成的频率组合, 或使电路按一输出电流目标值工作, 当命令开关断开时, 控制模块将该电压信号的消失看作另一命令, 说明书使所述开关打开或闭合, 使电路工作于另一自激振荡频率或按另一种P丽占空比形成的频率组合, 或使电路按另一输出电流目标值工作。 Said power supply further includes a rectifier circuit, the external AC line and neutral after the rectifier is connected to the inverter switching circuit and the signal control module connected to the negative terminal of the rectifier output will form a loop with an external AC FireWire or zero line and the voltage any differential voltage source through a command to switch to a wire connected to the signal input terminal of the control module, control module outputs the connection switch, the command switch is closed, the control module receives a voltage signal to the voltage source and the signal as a control command, so that the switch is closed or open, so that the circuit operates in a self-excited oscillation frequency, or a frequency combination is formed according to the PWM duty cycle, or to make the circuit by an output current target value, when the command switch is turned off, the control module of the voltage signal disappears as another command, instruction manual so that the switch is open or closed, so that the circuit operates in another self-excited oscillation frequency or frequency combination formed by another P Lai duty or circuit on another output current target value.

本发明的有益效果是: The beneficial effects of the present invention is:

本发明提供了一种能可靠工作的输出频率或输出功率可变的自激振荡电源, 或具有调光功能的气体放电灯自激振荡电子镇流器, 而且本发明由于采用自激振荡的方式来实现输出频率或输出功率的改变, 与他激振荡电路相比较, 达到了成本相对较低的功效。 The present invention is to provide a self-oscillating power supply of a work reliably variable output frequency or output power, or gas discharge lamp self-oscillating electronic ballast having a dimming function, but the present invention is the use of the self-oscillating manner. to achieve the change of the output frequency or output power, compared with he oscillating circuit, to achieve a relatively low cost efficacy. 本发明也可以提出一种输出电流可变的电源。 The present invention can also be proposed a variable output current of the power supply.

附图说明 BRIEF DESCRIPTION OF THE DRAWINGS

下面结合附图和实施例对本发明进一步说明。 Below further illustrate the present invention, taken in conjunction with the accompanying drawings and embodiments.

图1是本发明的总体结构的方框图; Figure 1 is a block diagram of the overall structure of the present invention;

图2是本发明的一实施例示意图; Figure 2 is that the present invention is an embodiment of a schematic diagram;

图3是本发明的另一实施例示意图; Figure 3 is another embodiment of the present invention is a schematic diagram;

图4是本发明的另一实施例示意图; Figure 4 is another embodiment of the present invention is a schematic diagram;

图5是本发明的另一实施例示意图; Figure 5 is another embodiment of the present invention is a schematic diagram;

图6是本发明的另一实施例示意图; Figure 6 is another embodiment of the present invention is a schematic diagram;

图7是本发明的另一实施例示意图; Figure 7 is another embodiment of the present invention is a schematic diagram;

图8是本发明用于电子镇流器的一实施例的具体电路图; Figure 8 is a concrete circuit diagram of an embodiment of the present invention is applied to the electronic ballast;

图9是本发明一种启动过程的示意图; Figure 9 is a schematic diagram of a startup process of the present invention;

图10为本发明一种LED驱动电源的实例示意图。 Figure 10 is a schematic view invention is an LED drive power instance.

附图中标号说明: Drawings label:

101—逆变开关电路; 101 - inverter switching circuit;

102—多个电流互感器组成的耦合电路; 102 - more than one current transformer coupling circuit;

103—负载电路; 104—开关; 103 - load circuit; 104 - switch;

201—上管; 202—下管; 201 - tube; 202 - down tube;

203—负载匹配电路; 204—控制电路; 205—电控制开关; 203 - load matching circuit; 204 - control circuit; 205 - power control switch;

206a—磁环原边; 206b—磁环上管驱动副边; 206a-magnetic primary side; 206b-magnetic tube drive on the secondary side;

206c—磁环下管驱动副边; 206c-magnetic tube drive the secondary side;

207a—磁环原边; 207b—磁环上管驱动副边; 207A-magnetic primary side; 207b-magnetic tube drive on the secondary side;

207c—磁环下管驱动副边; 207c-magnetic tube drive the secondary side;

208—上管驱动电阻; 209—下管驱动电阻; 说明书 208 - top tube drive resistor; 209 - tube drive resistor; manual

210—隔直电容上; 211—隔直电容下; 210 - blocking capacitor; 211 - blocking capacitor;

301—上管; 302—下管; 303—负载匹配电路; 301 - on the tube; 302 - down tube; 303 - load matching circuit;

304—控制电路; 305—双刀电控制开关; 304 - control circuit; 305 - pole power control switch;

306a—磁环原边; 306b—磁环上管驱动副边; 306a-magnetic primary side; 306b-magnetic tube drive on the secondary side;

306c—磁环下管驱动副边; 306c-magnetic tube drive the secondary side;

307a—磁环原边; 307b—磁环上管驱动副边; 307a-magnetic primary side; 307b-magnetic tube drive on the secondary side;

307c—磁环下管驱动副边; 307c-magnetic tube drive the secondary side;

308—上管驱动电阻; 309—下管驱动电阻; 308 - tube drive resistor; 309 - down tube drive resistor;

310—隔直电容上; 311—隔直电容下; 310 - blocking capacitor; 311 - blocking capacitor;

401—上管; 402—下管; 401 - tube; 402 - down tube;

403—负载匹配电路; 404—隔直电容上; 405—隔直电容下; 406a—磁环原边; 406b—磁环上管驱动副边; 403 - load matching circuit; 404 - blocking capacitor; 405 - blocking capacitor; 406A-magnetic primary side; 406b-magnetic tube drive on the secondary side;

406c—磁环下管驱动副边; 406c-magnetic tube drive the secondary side;

407a—磁环原边; 407b- -磁环上管驱动副边; 407a-magnetic primary side; 407b-- magnetic tube drive the secondary side;

407c—磁环下管驱动副边; 407d—磁环控制绕组; 408—上管驱动电阻; 409—下管驱动电阻; 410—控制开关; 407c-magnetic tube drive secondary; 407d-magnetic control winding; 408 - tube drive resistor; 409 - tube drive resistor; 410 - control switch;

501—上管; 502—下管; 501 - tube; 502 - down tube;

503—负载匹配电路; 504—控制电路; 503 - load matching circuit; 504 - control circuit;

505a—联动开关上管部分; 505b—联动开关下管部分; 506a—磁环原边; 506b—磁环上管驱动副边; 506c—磁环下管驱动副边; 505a-gang switch on the tube part; tube portion 505b-linkage switch; 506a-magnetic primary side; 506b-magnetic tube drive on the secondary side; 506c-magnetic tube drive the secondary side;

507a—磁环原边; 507b—磁环上管驱动副边; 507c—磁环下管驱动副边; 507a-magnetic primary side; 507b-magnetic tube drive the secondary side; 507C-magnetic tube drive the secondary side;

508—上管驱动电阻; 509—下管驱动电阻; 508 - tube drive resistor; 509 - down tube drive resistor;

510—隔直电容上; 511—隔直电容下; 510 - blocking capacitor; 511 - blocking capacitor;

601—上管; 602—下管; 601 - tube; 602 - down tube;

603—负载匹配电路; 604—控制电路; 603 - load matching circuit; 604 - control circuit;

605a—联动开关上管部分; 605b—联动开关下管部分; 605c—联动开关磁环原边部分; 说明书 605a-gang switch on the tube part; tube portion 605b-gang switch; to switch magnetic ring original edge portion 605c-linkage; manual

606a—磁环原边; 606b—磁环上管驱动副边; 606a-magnetic primary side; 606b-magnetic tube drive on the secondary side;

606c—磁环下管驱动副边; 606c-magnetic tube drive the secondary side;

607a—磁环原边; 607b—磁环上管驱动副边; 607a-magnetic primary side; 607b-magnetic tube drive on the secondary side;

607c—磁环下管驱动副边; 607c-magnetic tube drive the secondary side;

608—上管驱动电阻; 609—下管驱动电阻; 608 - tube drive resistor; 609 - down tube drive resistor;

610—隔直电容上; 611—隔直电容下; 610 - blocking capacitor; 611 - blocking capacitor;

701—上管; 702—下管; 701 - tube; 702 - down tube;

703—负载匹配电路; 704—控制电路; 703 - load matching circuit; 704 - control circuit;

705—双位开关; 705 - double-switch;

706a—磁环原边; 706b—磁环上管驱动副边; 706a-magnetic the original side; 706b-magnetic tube drive on the secondary side;

706c—磁环下管驱动副边; 706c-magnetic tube drive the secondary side;

707a—磁环原边; 707b—磁环上管驱动副边; 707a-magnetic the original side; 707b-magnetic tube drive on the secondary side;

707c—磁环下管驱动副边; 707c-magnetic tube drive the secondary side;

708—上管驱动电阻; 709—下管驱动电阻; 708 - tube drive resistor; 709 - down tube drive resistor;

710—隔直电容上; 711—隔直电容下; 710 - blocking capacitor; 711 - blocking capacitor;

D1—整流电路或PFC电路; D1-rectifier circuit or PFC circuit;

R1—起振充电电阻; C1一起振电容; D2—双向触发二极管; R1-start-up charging resistor; C1 vibration with capacitor; D2-way trigger diode;

D3—二极管; R2—半桥上管驱动电阻; R3—半桥下管驱动电阻; D3-diode; R2-half bridge tube drive resistor; tube drive resistor R3-half-bridge;

Q1—半桥上管; Q2—半桥下管; Tla—振荡磁环T1原边; Q1-half the bridge pipe; tube Q2-bridge; the TLA-oscillating magnetic T1 primary side;

Tib—振荡磁环T1上管驱动副边; Tic一振荡磁环T1下管驱动副边; Tib-oscillating magnetic T1 tube drive on the secondary side; tube drive the secondary the Tic oscillating magnetic T1;

T2a—振荡磁环T2原边; T2b—振荡磁环T2上管驱动副边; The T2A-oscillating magnetic T2 primary side; T2B-oscillating magnetic T2 tube drive on the secondary side;

T2c—振荡磁环T2下管驱动副边; T2d—振荡磁环T2控制绕组; T2c-oscillating magnetic T2 tube drive the secondary side; T2d-control winding oscillating magnetic T2;

S1—控制开关; VDC—辅助直流电压电源; R4—辅助电阻; S1-control switch; VDC-auxiliary DC voltage source; R4-secondary resistance;

Lr一谐振电感; TL一荧光灯; Cr一谐振电容; Lr a resonant inductor; TL fluorescent lamps; Cr resonant capacitor;

C2—隔直电容上; C3—隔直电容下; C2-blocking capacitor; C3-blocking capacitor;

901—上电启动或收到启动指令; 901 - Power-start or start command is received;

902—置开关于产生启动频率的位置; 902 - set to open the location on the Start frequency;

903—启动完成吗? 903 - Start complete it?

904—按控制命令, 置开关于产生所需频率的位置。 904 - control commands, set switch position to produce the desired frequency.

D1001—整流电路; Z1001—稳压管; 说明书 D1001-rectifier circuit; Z1001-regulator; manual

R1001—起振充电电阻; C1001—起振电容; D1002—双向触发二极管; The R1001-start-up charging resistor; C1001-start-up capacitor; D1002-way trigger diode;

D1003—二极管; R1002 半桥上管驱动电阻; D1003-diode bridge tube; R1002 and a half drive resistor;

R1003 半桥下管驱动电阻; Tube drive resistor R1003 and a half bridge;

Q1001—半桥上管; Q1002—半桥下管; Q1001-half pipe on the bridge; bridge Q1002-half pipe;

TlOOla—振荡磁环T1001原边; TlOOla-oscillating magnetic T1001 primary side;

TlOOlb—振荡磁环T1001上管驱动副边; The on the TlOOlb-oscillating magnetic T1001, tube-driven secondary side;

TlOOlc—振荡磁环T1001下管驱动副边; The under TlOOlc-oscillating magnetic T1001, tube-driven secondary side;

T1002a—振荡磁环T1002原边; T1002a-oscillation the T1002 the primary side of the magnetic ring;

T1002b—振荡磁环T1002上管驱动副边; The on the t1002b-oscillating magnetic T1002, tube-driven secondary side;

T1002c—振荡磁环T1002下管驱动副边; T1002c-oscillating magnetic T1002, tube-driven secondary side;

DC1001—辅助直流电压源; R1004 电阻; DC1001-auxiliary DC voltage source; R1004 resistor;

C1002 半桥电容上; C1003 半桥电容下; C1002 half-bridge capacitor; C1003 half-bridge capacitor;

LrlOOl—谐振电感; C1004—谐振电容; D1004—输出整流电路; LrlOOl-resonant inductor; C1004-resonant capacitor; D1004-output rectifier circuit;

半导体发光器件组; The semiconductor light emitting device group;

ASIC—控制模块; VCMD—命令电源; S1001—命令开关; ASIC-control module; VCMD-command power; switch S1001-command;

S1002—电控开关。 S1002-electric control switch.

具体实施方式 DESCRIPTION OF THE PREFERRED EMBODIMENTS

请参阅附图1所示,本发明的输出频率分段可变的自激振荡电源由逆变开关电路(101)、 多个电流互感器组成的耦合电路(102)、 负载电路(103 ) 和开关(104) 构成, 其中逆变开关电路(101 ) 的输出连接至多个电流互感器组成的耦合电路(102)和负载电路(103)组成的串联回路, 多个电流互感器组成的耦合电路(102 ) 输出连接至逆变开关电路(101 ) 作为逆变开关电路(101 ) 的驱动。 Please refer shown in Figure 1, the coupling circuit of the present invention, the output frequency Break variable self-oscillating power supply from the inverter switching circuit (101), composed of a plurality of current transformers (102), a load circuit (103) and a switch (104), wherein the inverter output of the switching circuit (101) connected to the coupling circuit (102) and a load circuit (103) is composed of a series circuit composed of a plurality of current transformers, the plurality of current transformer coupling circuit ( 102) output is connected to the inverter switching circuit (101) as the drive of the inverter switching circuit (101).

其中外部控制命令可控制开关(104), 使多个电流互感器组成的耦合电路(102 )中的部分互感器参与或退出自激振荡, 来改变自激振荡频率。 Wherein the part of the external control command to control the switch (104), composed of a plurality of current transformers (102) of the coupling circuit of transformer participate or exit the self-excited oscillation, and to change the self-excited oscillation frequency. 所述的多个电流互感器组成的耦合电路(102) 至少由二个耦合系数相互独立的电流互感器组成。 The coupling circuit of said plurality of current transformers (102) by at least two mutually independent coupling coefficient current transformer.

某些负载在上电启动时对输至负载的频率或功率有特定要求, 只有符合要求的频率或功率才能保证负载正常启动, 在连接这类负载时, 附图1所示的输出频率或输出功率可变的自激振荡电源, 可以按照负载启动特性对启动频率的要求, 设置多个电流互感器组成的耦合电路(102)中某几个特定互感器参与振荡时的频率为该启动频率;然后按照附图9所述的方法, 在所述自激振荡电源上电启动时或外部命令给予启动指令时, 使开关(104)控制上述特定互说明书感器参与振荡, 从而产生该启动振荡频率。 Certain load in a power-on start frequency or power output to the load has specific requirements, only meet the requirements of the frequency or power in order to ensure that the load is normal start, when such load is connected, Figure 1 shows the output frequency or output The self-oscillating power variable power supply, can be set in accordance with the requirements of the load start-up characteristic of the start frequency, participate in the oscillation frequency of a few specific transformer coupling circuit composed of a plurality of current transformers (102) for the start frequency; then, according to 9, wherein the method of the accompanying drawings, in said self-oscillating power on start or external command when the start command is given, the switch (104) to control the above-mentioned specific interaction document to participate in the oscillation sensor, resulting in the start-oscillation frequency . 直至负载启动完成, 再按照控制命令的要求, 置开关(104) 于产生所需频率的位置。 Until the completion of the load to start, in accordance with the requirements of the control command, set the switch (104) to produce the desired frequency position.

逆变开关电路(101 )的输入为直流输入, 可来自前级整流或PFC电路, 或来自外部直流电源。 Input of the inverter switching circuit (101) is a DC input can be derived from the the foreline rectifier or PFC circuit, or from an external DC power supply. 逆变开关电路(101 ) 获得直流输入后, 由逆变开关电路(101 ) 内部起振线路或外部电路产生起振触发脉冲, 使逆变开关电路(101 )开始工作, 将直流输入转变成交流输出至多个电流互感器组成的耦合电路(102)和负载电路(103) 构成的串联回路, 其中多个电流互感器组成的耦合电路(102 ) 自逆变开关电路(101 ) 输出的交流电流产生耦合输出连接至逆变开关电路(101 ), 用于驱动逆变开关电路(101 ), 产生自激振荡。 Inverter switching circuit (101) for DC input, the inverter switching circuit (101) from the internal vibrator circuit or an external circuit trigger pulse is generated from the vibration, so that the inverter switching circuit (101) to start working, the DC input into AC output coupling circuit (102) and a load circuit (103) is composed of a series circuit, wherein a plurality of current transformer coupling circuit (102) to a plurality of current transformers consisting of alternating current generated from the output of the inverter switching circuit (101) The coupler output is connected to the inverter switching circuit (101) for driving the inverter switching circuit (101), a self-excited oscillation. 当外部控制命令控制开关(104),使多个电流互感器组成的耦合电路(102 )中的部分互感器参与或退出自激振荡时, 逆变开关电路(101 )输出至负载电路(103 )的电流振荡频率即发生改变; 当负载电路(103) 为非纯阻性时, 电流振荡频率的改变导致输出至负载电路(103 ) 的功率改变。 When the external control commands to control the switch (104), the coupling circuit composed of a plurality of current transformers (102) in the part of the transformer in or exit the self-excited oscillation, the inverter switching circuit (101) is output to the load circuit (103) The current on the oscillation frequency is changed, the current oscillation frequency change in the power change of the output to a load circuit (103); when the load circuit (103) is non-pure resistive.

附图2是本发明的一实施例示意图。 Figure 2 is a schematic view of an embodiment of the present invention. 上管(201 )、 下管(202)、 隔直电容上(210)和隔直电容下(211 )组成半桥逆变电路, 上管(201 )和下管(202)连接中点输出依次连接至磁环原边(206a)、 磁环原边(207a) 和负载匹配电路(203), 负载匹配电路(203) 另一端与隔直电容上(210) 和隔直电容下(211 ) 的连接点相连; 电路中设置有两个磁环, 磁环原边( 207a), 磁环上管驱动副边(207b )和磁环下管驱动副边(207c) 为同一磁环的不同绕组, 磁环原边(206a)、 磁环上管驱动副边(206b)和磁环下管驱动副边(206c )为另一磁环的不同绕组; 磁环上管驱动副边(206b)和磁环上管驱动副边(207b )与上管驱动电阻(208 ) 串联组成上管(201 ) 的驱动电路; 磁环下管驱动副边(206c)、 磁环下管驱动副边(207c ) 与下管驱动电阻(209)串联组成下管(202)的驱动电路。 Tube (201), down tube (202) to form a half-bridge inverter circuit, blocking capacitor (210) and blocking capacitor (211), on the tube (201) and down tube (202) is connected to the mid-point output in turn the magnetic ring side (206a), the magnetic ring side (207a) and load matching circuit (203), load matching circuit (203) connected to the other end and blocking capacitor (210) and blocking capacitor (211) connected to the connection point; two magnetic ring, magnetic ring side (207a), the magnetic tube drive on the secondary side (207b) and the magnetic tube drive secondary (207c) for the different windings of the same magnetic circuit, the magnetic primary side (206a), the magnetic tube to drive secondary side (206b) and magnetic the secondary tube drive (206c) for another toroid winding; magnetic tube drive on the secondary side (206b) and magnetic tube drive on the secondary side of the ring (207b) on the tube drive resistor (208) in series tube drive circuit (201); magnetic ring the secondary tube drive (206c), magnetic tube drive secondary (207c) The down tube drive resistor (209) down tube drive circuit (202) in series. 当外来起振脉冲开通下管(202 )后, 半桥起振。 After the opening of foreign start-up pulse tube (202), the half-bridge start-up. 控制电路(204) 按照外来控制命令的要求输出控制信号使电控制开关(205 ) 闭合或打开; 当电控制开关(205 )打开时,负载电流流经磁环原边(206a)和磁环原边(207a), 这两个磁环各自的两组副边输出分别叠加后, 分别驱动上管(201 )和下管(202), 形成一固定的自激振荡频率; 当电控制开关(205 ) 闭合时, 磁环原边(207a)被短路, 负载电流只流经磁环原边(206a), 磁环上管驱动副边(207b )与磁环下管驱动副边(207c)输出电压都为零, 只有磁环上管驱动副边(206b)和磁环下管驱动副边(206c )分别驱动上管(201 )和下管(202), 形成另一固定的自激振荡频率。 The control circuit (204) in accordance with the requirements of the external control command output control signal of the electrically controlled switch (205) is closed or opened; when the electrically controlled switch (205) is open, the primary side (206a) of the load current flowing through the magnetic toroid original rim (207a), each of the two groups of secondary output superimposed in two toroid, respectively drive the upper tube (201) and the down tube (202) is formed of a fixed, self-excited oscillation frequency; when the electrically controlled switch (205 ) is closed, the the magnetic primary side (207a) is short-circuited, the load current flowing through the magnetic primary side (206a), the magnetic tube drive the output voltage of the secondary side (207b) and magnetic tube drive secondary (207c) are zero the magnet tube drive on the secondary side (206b) and the secondary side tube drive magnet (206c) respectively drive the upper tube (201) and the down tube (202), the formation of the the another fixed self-excited oscillation frequency. 因此, 控制电路(204)按照外来控制命令的要求使电控制开关(205) 闭合或打开, 即能改变自激振荡频率, 或改变通过负载匹配电路(203) 输出的功率。 Therefore, the control circuit (204) in accordance with the requirements of the external control command so that the electrically controlled switch (205) is closed or open, i.e. change the self-excited oscillation frequency, or a change in the power output of the load matching circuit (203).

附图3是本发明的另一实施例的示意图, 与附图2所示实施例的工作原理基本相同, 只说明书是控制开关改成双刀电控制开关(305) 并控制振荡磁环副边; 当控制电路(304)控制双刀电控制开关(305) 闭合时, 磁环上管驱动副边(307b)和磁环下管驱动副边(307c)分别被短路, 退出振荡, 自激振荡频率只由另一磁环决定; 当双刀电控制开关(305)开路时, 两个磁环都参与振荡, 形成另一振荡频率。 Figure 3 is a schematic view of another embodiment of the present invention, and shown in Figure 2 embodiment is basically the same principle, only manual control switch into a double-pole power control switch (305) and controls the oscillation magnet secondary side ; when the control circuit (304) controls the pole power control switch (305) is closed, the magnetic tube drive on the secondary side (307b) and magnetic tube drive secondary (307c) is short-circuited, exit oscillation, self-excited oscillation The frequency is determined only by another magnetic ring; pole power control switch (305) is open, both magnetic participate in the oscillation, the formation of another oscillation frequency.

附图4是本发明的另一实施例的示意图, 上管(401)和下管(402) 组成逆变半桥, 输出依次连接至磁环原边(406a)、 磁环原边(407a)和负载匹配电路(403), 再连接至隔直电容上(404) 和隔直电容下(405) 的连接点处; 隔直电容上(404) 和隔直电容下(405) 串联连接, 其两端与直流输入两端连接; 电路中设置有两个磁环, 磁环原边(407a)、 磁环上管驱动副边(407b)、 磁环下管驱动副边(407c)和磁环控制绕组(407d)为同一磁环的不同绕组, 磁环原边(406a)、 磁环上管驱动副边(406b)和磁环下管驱动副边(406c) 为另一磁环的不同绕组; 磁环上管驱动副边(406b)、 磁环上管驱动副边(407b)和上管驱动电阻(408) 串联后与上管(401) 的基极和发射极连接, 组成上管(401) 的驱动电路; 磁环下管驱动副边(406c)、 磁环下管驱动副边(407c)和下管驱动电阻(409) 串联后与下管(402) 的基极和发射极连接, 组成下管(402) 的驱动电路; 控制开关(410) 与磁环控制绕组(407d) 并接。 Figure 4 is a schematic view of another embodiment of the present invention, the upper tube (401) and the lower tube (402) is composed of a half-bridge inverter, the output is in turn connected to the magnet raw edge (406a), the primary side of magnet (407a) and load matching circuit (403), and then connected to a DC blocking capacitor (404) and blocking capacitor (405) at the connection point; blocking capacitor (404) and (405) blocking capacitor connected in series, both ends and both ends of the DC input connection; circuit is provided with two magnetic ring, magnetic primary side (407a), the magnetic tube drive on the secondary side (407b), the secondary magnetic tube drive (407c) and magnetic control winding (407d) for the different windings of the same magnetic ring, magnetic primary side (406a), the magnetic tube drive secondary side (406b) and magnetic tube drive secondary (406c) for another magnetic winding ; tube (tube drive on the secondary side (406b), the magnetic ring magnetic tube drive on the secondary side (407b) and tube drive resistor (408) connected in series with the tube (401) of the base and the emitter is connected to form 401) a drive circuit; magnet the deputy section 406c of the tube drive, tube drive magnet secondary side (407c) and the lower tube driver resistor (409) in series with the base and the emitter of the down tube (402) is connected The driving circuit composed of the down tube (402); control switch (410) and the magnet for the control winding (407d), and then.

当外来起振脉冲开通下管(402)后, 半桥起振。 After the opening of foreign start-up pulse tube (402), the half-bridge start-up. 当控制开关(410) 打开时, 两个磁环共同参与自激振荡, 形成一固定的振荡频率; 当控制开关(410) 闭合时, 磁环上管驱动副边 When the control switch (410) is open, the two magnet jointly involved in the self-excited oscillation, the formation of a fixed oscillation frequency; when the control switch (410) is closed, the magnetic ring on the tube drive the secondary side

(407b) 和磁环下管驱动副边(407c) 的输出电压都被篏位到零而退出振荡, 自激振荡由另一磁环决定, 形成另一固定的振荡频率, 实现了输出频率的改变。 (407b) and the tube drive sub-section (407c), the output voltage of the toroid are Clamp on exit oscillation to zero, the self-excited oscillation is determined by another magnet form another fixed oscillation frequency, the output frequency changed. 若负载匹配电路(403)将外部负载匹配成非纯阻性, 则振荡频率的受控改变导致输出功率的受控改变,达到发明目的。 External load matching circuit (403) into a purely resistive load matching, the oscillation frequency controlled change in the controlled change of the output power to achieve the purpose of the invention.

附图5是本发明的另一实施例的示意图, 上管(501)和下管(502)组成半桥逆变电路, 输出依次连接至磁环原边(506a)、 磁环原边(507a)和负载匹配电路(503), 再连接至隔直电容上(510)和隔直电容下(511) 的连接处; 隔直电容上(510) 和隔直电容下(511) 串联连接后两端接直流输入; 电路中设置有两个磁环, 磁环原边(507a)、 磁环上管驱动副边 5 of the accompanying drawings is a schematic view of another embodiment of the present invention, the upper tube (501) and the down tube (502) is composed of a half-bridge inverter circuit, the output is in turn connected to the the toroid original edge (506a), the toroid the primary side (507a two) and load matching circuit (503), and then connected to the the junction blocking capacitor (510) and blocking capacitor (511); blocking capacitor (510) and blocking capacitor (511) connected in series Termination DC input; circuit is provided with two magnetic ring, magnetic primary side (507a), the magnetic ring on the tube drive secondary

(507b)和磁环下管驱动副边(507c)为同一磁环的不同绕组, 磁环原边(506a)、 磁环上管驱动副边(506b) 和磁环下管驱动副边(506c) 为另一磁环的不同绕组; 磁环上管驱动副边 (507b) and magnetic tube drive secondary (507C) for the same magnetic windings, magnetic primary side (506a), the magnetic tube drive on the secondary side (506b) and the magnetic tube drive secondary (506c secondary magnetic ring on the tube drive) another magnetic windings;

(506b) 或磁环上管驱动副边(507b) 由联动开关上管部分(505a)选择其中之一与上管驱动电阻(508) 串联后连接至上管(501) 的基极和发射极; 磁环下管驱动副边(506c) 或磁环下管驱动副边(507c) 由联动开关下管部分(505b) 选择其中之一与下管驱动电阻(509) 串联后连接至下管(502)的基极和发射极; 设置两个磁环的耦合系数不同, 使每个磁环单独说明书接入电路时形成的振荡频率不同,其中磁环上管驱动副边( 506b )和磁环下管驱动副边( 506c) 接入电路时的振荡频率符合负载启动特性的要求。 (506b) or the tube on the magnet drive sub-section (507b) by the interlocking switch tube portion (505a) to select one of the upper tube driver resistor (508) connected in series, the base and the emitter of the first tube (501); magnetic tube drive secondary (506c) or magnetic tube drive secondary side (507C) the interlocking switch tube portion (505b) Select one of the down tube drive resistor (509) connected to a series of tubes (502 ) of the base and the emitter; setting the two magnet type coupling coefficient, the oscillation frequency is formed in a separate document access circuitry so that each magnet type, wherein the magnetic ring on the tube to drive the secondary side (506b) and the toroid tube drive secondary (506c) access to the circuit, the oscillation frequency in accordance with the requirements of the load starting characteristics. 在初始上电时, 控制电路(504)总是控制联动开关使磁环上管驱动副边(506b) 和磁环下管驱动副边(506c )接入电路, 保证负载启动特性得到满足; 外来起振脉冲使逆变半桥起振, 电路按磁环上管驱动副边(506b ) 和磁环下管驱动副边(506c)接入电路形成的启动频率工作。 Initial power-up, the control circuit (504) always control linkage switch to the secondary magnetic tube drive (506b) and magnetic tube drive secondary side (506c) access to the circuit load start-up characteristics are met; foreign start-up pulse start oscillating half-bridge inverter circuit secondary drive (506b) and magnetic tube drive secondary (506c) access to the start frequency of the circuit formed by the magnetic tube. 当负载启动后, 控制电路(504)可按照外部控制命令的要求使联动开关上管部分(505a) 和联动开关下管部分(505b)在两个磁环的副边之间切换, 使磁环上管驱动副边(506b )和磁环下管驱动副边(506c ) 接入电路, 或使磁环上管驱动副边(507b ) 和磁环下管驱动副边(507c) 接入电路, 从而使电路在两个不同的振荡频率之间切换, 当负载匹配电路(503)形成非纯阻性等效负载时, 输出频率的改变导致输出功率的改变, 达到发明目的。 When the load starts, the control circuit (504) in accordance with the requirements of the external control command so that the interlocking switch tube portion (505a), and the interlocking switch tube portion (505b) to switch between the secondary side of the two magnet, the magnet secondary side (506b) and magnetic tube drive secondary (506c) access on the tube drive circuit, or magnetic tube drive on the secondary side (507b) and magnetic tube drive the secondary (507C) access circuit, enabling the circuit to switch between two different oscillation frequencies, the non-purely resistive equivalent load, the output frequency is changed when the load of the matching circuit (503) is formed to cause the change of the output power, to achieve the purpose of the invention.

附图6是本发明的另一实施例的示意图, 与附图5所示实施例的工作原理基本类似, 只是两个磁环的原边也由联动开关磁环原边部分(605c ) 选择接入电路; 设置两个磁环的耦合系数不同, 使每个磁环单独接入电路时形成的振荡频率不同。 Figure 6 is a schematic view of another embodiment of the present invention is substantially similar to the embodiment shown in Figure 5 working principle, only the primary side of the two magnet selected by the interlocking switch magnet raw edge portion (605c) connected to into the circuit; coupling coefficient set two toroid type, separate access to the circuit formed when the oscillation frequency so that each magnet type. 当控制电路(604)按照外部控制命令的要求控制联动开关在两个磁环之间切换时, 将使电路在两个不同的振荡频率之间切换, 达到发明目的。 When the control circuit (604) according to the external control commands required to control the interlocking switch to switch between the two toroid, will enable the circuit to switch between two different oscillation frequencies, to achieve the purpose of the invention.

附图7是本发明的另一实施例的示意图, 与附图5所示实施例的工作原理基本类似, 只是两个磁环的原边由双位开关(705 )选择接入电路, 并将两个磁环的副边改成串联; 设置两个磁环的耦合系数不同,使每个磁环单独接入电路时形成的振荡频率不同。 Figure 7 is a schematic view of another embodiment of the present invention is substantially similar to the embodiment shown in Figure 5 working principle, only the primary side of the two magnet by a two-position switch (705) and select the access circuitry, and two toroid secondary side into series; set the type of the coupling coefficient of the two magnet, separate access to the circuit formed when the oscillation frequency so that each magnet type. 当控制电路(704) 按照外部控制命令的要求控制双位开关(705 )在两个磁环之间切换时, 原边未接入的磁环的副边输出电压为零, 振荡频率由接入电路的磁环决定; 因此, 在两个磁环间切换, 即使电路在两个不同的振荡频率之间切换, 达到发明目的。 When the control circuit (704) in accordance with an external control commands required to control double-switch (705) to switch between the two magnetic ring, the primary side not connected to the magnetic secondary output voltage is zero, the oscillation frequency by the access The circuit's the toroid decision; therefore, to switch between the two ring, to achieve the purpose of the invention, even if the circuit is switched between two different oscillation frequencies.

附图8是本发明用于电子镇流器的一实施例的具体电路图,整流电路或PFC电路D1输出连接至半桥上管Q1和半桥下管Q2组成的逆变半桥; 起振充电电阻Rl、 起振电容C1和双向触发二极管D2组成起振线路,二极管D3在电路起振后将起振电容C1篏位在低电平; 半桥上管Q1和半桥下管Q2组成的逆变半桥输出依次连接振荡磁环T1原边Tla、 振荡磁环T2原边T2a、 谐振电感Lr、 荧光灯TL的灯丝、 谐振电容Cr, 经荧光灯TL的另一侧灯丝接到隔直电容上C2和隔直电容下C3的连接中点; 电路中设置有两个磁环, 振荡磁环T1原边Tla、 振荡磁环T1上管驱动副边Tib和振荡磁环T1下管驱动副边Tic为同一磁环的不同绕组, 振荡磁环T2原边T2a、 振荡磁环T2上管驱动副边T2b、 振荡磁环T2下管驱动副边T2c和振荡磁环T2控制绕组T2d为另一磁环的不同绕组; 振荡磁环T1上管驱动副边Tlb、 振荡磁环T2上管说明书驱动副边T2b和半桥上管驱动电阻R2串联后与半桥上管Q1的基极和发射极连接; 振荡磁环T1下管驱动副边Tlc、 振荡磁环T2下管驱动副边T2c和半桥下管驱动电阻R3串联后与半桥下管Q2的基极和发射极连接; 隔直电容上C2和隔直电容下C3串联后两端接整流电路或PFC 电路D1的输出; 辅助直流电压电源VDC、辅助电阻R4、控制开关SI串联后与振荡磁环T2控制绕组T2d的两端相连接;置辅助直流电压电源VDC的电压值为足以通过辅助电阻R4使振荡磁环T2饱和的值, 或置辅助直流电压电源VDC的电压值为零并置辅助电阻R4为适当值, 使辅助电阻R4与振荡磁环T2控制绕组T2d接通时,振荡磁环T2上管驱动副边T2b和振荡磁环T2下管驱动副边T2c的输出被篏位到零。 Figure 8 is a specific circuit embodiment in the present invention is used in electronic ballast, a rectifying circuit or the PFC circuit D1 output is connected to the half-bridge and half-bridge inverter consisting of tube Q1 and half QIAOXIA tube Q2; vibrating charging resistance Rl, start-up capacitor C1, and two-way trigger diode D2, start-up circuit, diode D3 in the circuit Start-up after start-up capacitor C1 Clamp on at a low level; half-bridge tube Q2 Q1 and half-bridge inverse change the half-bridge output is in turn connected to the oscillating magnetic T1 original side TLA, oscillating magnetic T2 primary side T2a, resonant inductor Lr fluorescent TL filament, resonant capacitor Cr, the other side of the filament fluorescent TL received a blocking capacitor C2 blocking capacitor C3 connected midpoint; circuit is provided with two magnetic ring, magnetic oscillation T1 primary side TLA tube drive on the oscillating magnetic T1 secondary Tib and oscillating magnetic ring the T1 down tube drive secondary Tic the same toroid winding, oscillating magnetic the T2 primary side T2a, oscillating magnetic ring T2 tube drive vice edge T2B, oscillating magnetic T2 tube drive secondary T2c and oscillation magnetic T2 the control winding T2d for the other magnetic different winding tube drive; oscillating magnetic T1 the secondary TLB oscillating magnetic T2 the tube manual drive secondary T2b ​​and half bridge tube drive resistor R2 in series with the half-bridge base and emitter of the transistor Q1 is connected; oscillation magnetic T1 tube drive secondary TLC oscillating magnetic T2 tube drive secondary T2c and half-bridge tube drive resistor R3 in series with the base and emitter of the half-bridge transistor Q2 is connected; blocking capacitor C2 and blocking capacitor C3 in series at both ends connected to the output of the rectifier circuit or a PFC circuit D1; auxiliary DC voltage supply VDC auxiliary resistor R4, the control of the switch SI controlled oscillation toroid T2 series connected to both ends of the winding T2d; opposing auxiliary the voltage value of the DC voltage supply VDC enough through the auxiliary resistor R4 to make the oscillation toroid T2 saturation value, or set to a voltage value of the auxiliary DC voltage supply VDC to zero and set the the auxiliary resistor R4 to an appropriate value, so that the the auxiliary resistor R4 and the oscillating magnetic Central the T2 control winding T2d is turned on, the oscillating magnetic T2 tube drive on the secondary T2b ​​and oscillating magnetic T2 tube drive Vice side t2C output by Clamp on to zero.

初始状态时, 置控制开关S 1开路。 When the initial state is set to control the switch S 1 is open. 当适当电压的交流电输入至整流电路或PFC电路D1 后, 整流电路或PFC电路D1将交流输入转变为直流输出, 经起振充电电阻R1向起振电容C1 充电, 起振电容C1上电压逐渐升高直至双向触发二极管D2击穿,起振电容C1经双向触发二极管D2和半桥下管驱动电阻R3向半桥下管Q2基极放电, 半桥下管Q2导通, 电路起振; 因控制开关S1开路, 两个磁环都参与振荡, 电路以一固定频率振荡, 半桥上管Q1和半桥下管Q2组成的逆变半桥输出电流流经谐振电感Lr、谐振电容Cr和荧光灯TL的灯丝, 在谐振电容Cr两端产生高电压最终导致荧光灯TL击穿, 荧光灯TL点亮。 When an appropriate voltage AC input to the rectifier circuit or PFC circuit D1, the rectifier circuit or PFC circuit D1 AC input into a DC output charging start-up charging resistor R1 to the start-up capacitor C1 from the the oscillator capacitor C1 voltage gradually rises high until the two-way trigger diode D2 breakdown, the start-up capacitor C1 by way trigger diode D2 and a half of the bridge tube drive extreme discharge resistor R3 to the half bridge transistor Q2 groups, the half bridge tube Q2 is turned on, the circuit start-up; due to control switch S1 open, two magnetic ring involved in the oscillation circuit oscillates at a fixed frequency, half-bridge tube Q2 Q1 and half-bridge inverter output current flowing through the half-bridge resonant inductor Lr and resonant capacitor Cr and fluorescent TL the filament, the high voltage is generated at both ends of the resonant capacitor Cr eventually lead to the fluorescent lamps TL breakdown, fluorescent lamps TL light. 当需要调光时, 置控制开关S1 闭合,若辅助直流电压电源VDC的电压值被置为足够高的值, 则流经辅助电阻R4和振荡磁环T2控制绕组T2d的电流使该磁环饱和而退出振荡, 振荡频率改变为由另一磁环决定的自激振荡频率; 置控制开关S 1闭合时, 若辅助直流电压电源VDC的电压值被置零并且辅助电阻R4 被置为适当值, 使振荡磁环T2上管驱动副边T2b和振荡磁环T2下管驱动副边T2c的输出被篏位到零而退出振荡,振荡频率改变为由另一磁环决定的自激振荡频率; 因为荧光灯TL已经击穿, 逆变半桥输出电流的一部分经谐振电感Lr流到荧光灯TL, 自激振荡频率的改变导致流经谐振电感Lr和荧光灯TL的电流发生改变,使输出至荧光灯TL的功率发生改变, 达到调光效果。 When dimming is required, set the control switch S1 is closed, auxiliary DC voltage source VDC voltage value is set to a high enough value, T2 control winding T2d the current flowing through the auxiliary resistors R4 and oscillating magnetic so that the magnetic saturation exit the oscillation, the oscillation frequency change of the self-excited oscillation frequency determined by the another magnet; when set to control the switch S 1 is closed, if the auxiliary voltage value of the DC voltage supply VDC is set to zero and the the auxiliary resistor R4 is set to an appropriate value, oscillating magnetic tube drive on the secondary side T2b and oscillating magnetic T2 T2 tube drive Vice side t2C output by Clamp on to zero out of the oscillation, the oscillation frequency change determined by the other magnetic self-oscillation frequency; fluorescent TL breakdown, part of the half-bridge inverter output current to flow fluorescent resonant inductor Lr TL self-oscillation frequency changes led to the current flowing through the resonant inductor Lr and fluorescent TL changed, so that the power output to the fluorescent TL changed, to achieve the dimmer effect.

附图9是本发明一种启动方法的示意图。 Figure 9 is a schematic diagram of a start-up method of the present invention. 当本发明所述的频率分段可变的自激振荡电源所连接的负载对启动频率有特定要求时, 本发明的电源可以按照负载对启动频率的要求, 设置多个电流互感器组成的耦合电路(102 )中某几个特定互感器参与振荡时的频率为该启动频率。 Break variable frequency according to the present invention, the self-oscillating power supply is connected to the load when there is a lot of requirements on the start frequency, the power supply of the present invention can be set in accordance with the requirements of the load on the start frequency, a plurality of current transformer coupling a few specific transformer in the frequency of the oscillation circuit (102) for the starting frequency. 然后本发明的电源可按照附图9所述的方法逐步完成启动: 在步骤(901 )上电启动或收到启动指令时, 即进入步骤(902 )置开关于产生启动频率的位置, 使开关控制上述特定互感器参与振荡, 从而产生该启动频率。 Then the power of the present invention can be completed in accordance with the method described in Figure 9 gradually start: electric start or start command is received in step (901), the step (902) is set to open a start frequency to make the switch controlling the specific transformer to participate in the oscillation, resulting in the start-up frequency. 然后按步骤(903 )判断是否启动完成, 若未完成, 保持开关位置不变; 若启动完成, 则进入步骤(904)按控制命令, 置开关于产生所需频率的位置。 And then step-by-step (903) to determine whether startup is complete, if not complete, to keep the switch position unchanged; if the startup is complete, go to step (904) according to the control command, set to open position to produce the desired frequency. 说明书本方法可人工控制完成, 也可由本发明电源内设置的控制电路完成。 The Sheet This method manual control can also be set within the power supply of the present invention, the control circuit.

上述该些实例中, 也可以设置一控制模块和采样电路, 通过采样电路采集负载电路的电流采样, 反馈至控制模块, 控制模块控制PWM占空比, 由此达到将输出平均电流恒定在目标值附近的功效。 The example mentioned above, you can also set up a control module and a sampling circuit, through the the sampling circuits acquisition of the load circuit current sampling, the feedback to the control module, control module controls the PWM duty cycle, so as to achieve the output average current constant at the target value Nearby efficacy. 这仅仅是一种实现方案, 但并非用来局限本发明, 仅是举例说明之用。 This is just an implementation program, but not intended to limit the present invention, only for purposes of illustration. 应用例一 Application cases

上述的该些实例的电源可直接应用于气体放电灯电子镇流器。 The above-described some examples of the power supply can be directly applied to the gas discharge lamp electronic ballast. 电子镇流器(Electricalbal last ), 是指采用电子技术驱动电光源, 使之产生所需照明的电子设备。 The electronic ballast with (Electricalbal, last) refers to the use of electronic technology-driven electric light, thus producing the desired lighting electronic equipment. 与之对应的是电感式镇流器(或镇流器)。 The corresponding inductive ballast (ballast). 现代日光灯越来越多的使用电子镇流器, 轻便小巧, 甚至可以将电子镇流器与灯管等集成在一起, 同时, 电子镇流器通常可以兼具起辉器功能, 故此又可省去单独的起辉器。 Modern fluorescent increasing use of electronic ballasts, compact and lightweight, and can even be integrated electronic ballast lamp, electronic ballasts can usually be both QiHuiQi, and therefore would be saved go separate QiHuiQi. 电子镇流器还可以具有更多功能, 比如可通过电源逆变过程使得日光灯可以使用直流电源。 Electronic ballasts can also have more features, such as fluorescent can use DC power through a power inverter process. 将上述实例的电源应用于电子镇流器中, 还能达到调光功效。 The above examples the power applied to the electronic ballast, can achieve the effect of dimming.

这种应用仅是举例说明之用, 并非用来局限本发明,本发明的电源应用的领域极其广泛, 这仅是一种应用实现。 This application is only for purposes of illustration, the present invention is not intended to limit, an extremely wide field of application of the present invention, the power, this is merely an application implementation.

应用例二 Application Example 2

上述的该些实例的电源可直接应用于输出电流可变的电源中, 比如LED驱动电源中, 当然也可以是其它照明装置的驱动电源中, The above-described some examples of the power supply can be directly applied to the output current variable power source, such as LED drive power, of course, can also be in the drive power supply of the other lighting apparatus,

一种输出电流可变的电源, 该电源设置有逆变开关电路、 控制模块、 开关、 多个电流互感器、 谐振电感、 谐振电容、 输出整流电路、 以及直流负载, 谐振电感和谐振电容组成串联谐振电路, 谐振电容并接输出整流电路, 输出整流电路的输出并接直流负载, 控制模块按照外部命令使开关闭合或打开, 使至少一个电流互感器参与或退出自激振荡, 来改变自激振荡频率, 改变输出至直流负载的电流大小。 A variable power supply output current of the power supply is provided with the inverter switching circuit, the control module, the switch, the plurality of current transformer, resonant inductor, resonant capacitor, the output rectifier circuit, and the DC load, the composition of the resonant inductor and resonant capacitor in series the resonant circuit, the resonant capacitor and connected to the output rectifier circuit, the output of the output rectifier circuit and connected to a DC load control module in accordance with an external command so that the switch is closed or open, so that at least one current transformer in or exit the self-excited oscillation to change the self-oscillating frequency, change the output to a DC load current size.

直流负载包括至少一发光二极管。 DC load comprises at least one light emitting diode.

输出整流电路包含至少一个发光二极管。 The output of the rectifier circuit includes at least one light emitting diode.

所述的多个电流互感器, 是在磁芯上绕制有线圈, 互感器的原边绕组相互串联后与谐振电感串联连接, 每个互感器有二个副边绕组, 分别串联后驱动逆变开关电路的上、 下功率开关管, 其中一个电流互感器或绕有副边控制绕组, 开关并接任一电流互感器的一个绕组, 控制模块使开关打开或闭合, 使该电流互感器参与或退出自激振荡, 以控制电路的振荡频率。 Said plurality of current transformers, is wound on a core coil, primary winding of the transformer after each other in series with the resonant inductor are connected in series, each transformer has two secondary windings, respectively, after the series drive inverse varying the switching circuit on the next power switch tube, wherein a current transformer or control winding wound secondary side, the switch and the succession of one winding of a current transformer, the control module so that the switch is opened or closed, so that the current transformer participation or Exit self-oscillation to control the oscillation frequency of the circuit.

还有, 控制模块输出P醫信号使开关按PWM信号闭合或断开, 使受开关控制的电流互感器按PWM信号退出或参与自激振荡,使自激振荡频率按PWM信号的脉宽比在两个频率间切换, 说明书通过改变P丽脉宽比来改变工作于两个自激振荡频率的时间比例, 来改变输出至直流负载的电流的平均值大小。 Also, the switch control module output P biomedical signal in accordance with the PWM signal is closed or disconnected, so that the current transformer by the switch control by the PWM signal to exit or to participate in the self-excited oscillation of the self-excited oscillation frequency according to the pulse width of the PWM signal than in switching between two frequencies, instructions by changing the P Lai pulse width than the proportion of time to change the work in the two self-oscillation frequency to change the average size of the output to the DC load current.

该电源还包括将输出电流平均值的采样信号反馈到控制模块的采样模块, 控制模块据采样值和目标值的差异改变其输出P丽信号的脉宽比, 使输出至直流负载的电流的平均值恒定在目标值附近。 The power supply further includes sampling module output current average value of the sampled signal is fed to the control module, control module according to the sampled value and the target value of the difference between change its output PWM signal P Lai than the average output current to a DC load value constant around the target.

该电源还包含整流电路, 外部交流火线和零线经整流后连接至逆变开关电路, 控制模块的信号地连接到整流输出的负端, 将与外部交流火线或零线构成回路并有电压差的任何电压源经过一命令开关以一根导线连接到控制模块的信号输入端, 控制模块输出连接开关, 命令开关闭合时, 控制模块接收到该电压源的电压信号并将该信号看作控制命令, 使所述开关闭合或打开, 使电路工作于一自激振荡频率或一种按P丽占空比形成的频率组合, 或使电路按一输出电流目标值工作, 当命令开关断开时, 控制模块将该电压信号的消失看作另一命令, 使所述开关打开或闭合, 使电路工作于另一自激振荡频率或按另一种P丽占空比形成的频率组合, 或使电路按另一输出电流目标值工作。 The power supply further includes a rectifier circuit, the signal ground of the external AC line and neutral after the rectifier is connected to the inverter switching circuit, the control module connected to the negative terminal of the rectifier output will form a loop with an external AC FireWire or zero line and a voltage differential any voltage source signal input terminal through a command switch is connected to a wire to the control module, the control module outputs the connection switch, the command switch is closed, the control module receives a voltage signal to the voltage source and the signal as a control command , so that the switch is closed or open, so that the circuit operates in a self-excited oscillation frequency or frequency combination method according to the P LAI duty cycle is formed, or to make a circuit by an output current target value, when the command switch is turned off, the control module of the voltage signal disappears as another command, so that the switch is open or closed, so that the circuit operates in another self-excited oscillation frequency or frequency combination formed by another P Lai duty, or to make the circuit another output current target value.

附图10是本发明的另一实施例的具体电路图,该实施例利用本发明实现了对LED的可调光驱动。 Figure 10 is a specific circuit diagram of another embodiment of the present invention, this embodiment utilizes the present invention is to achieve a dimmable LED driver. 整流电路D1001输出连接至半桥上管Q1001和半桥下管Q1002组成的逆变半桥; 起振充电电阻R1001、 起振电容C1001和双向触发二极管D1002、 二极管D1003组成起振线路; 半桥上管Q1001和半桥下管Q1002组成的逆变半桥输出依次连接振荡磁环T1001原边T1001a、 振荡磁环T1002原边T1002a 、 谐振电感Lrl001、 谐振电容C1004; 谐振电容C1004另一端接半桥电容上C1002和半桥电容下C1003的连接中点; 谐振电容C1004两端并接至输出整流电路D1004, 输出整流电路D1004的输出并接半导体发光器件组LEDs ; 输出整流电路D1004 中还可以包含至少一个发光二极管;上述电路结构输出至半导体发光器件组LEDs的电流值受LED导通压降的影响较小, 是一种较好的LED驱动电路。 The the D1001 output of the rectifier circuit connected to the half-bridge tube tube Q1002 Q1001 and a half-bridge inverter half-bridge; start-up charging resistor R1001, the start-up capacitor C1001 and two-way trigger diode D1002 diode D1003 start-up line; half-bridge tube Q1001 and Q1002 composed of half-bridge tube half-bridge inverter output is in turn connected to the oscillating magnetic T1001 original side T1001a of oscillating magnetic T1002 original T1002a the resonant inductor Lrl001 resonant capacitor C1004; the resonant capacitor C1004 other end of the half-bridge capacitor on C1002 and the half-bridge capacitor C1003 connection midpoint; the resonant capacitor C1004 ends and connected to the output rectifier circuit D1004, the output of the output rectifier circuit D1004 and connected to the semiconductor light emitting device group LEDs; output rectifier circuit D1004 can also contain at least one light-emitting diodes; the circuit structure is less affected by the LED forward voltage output to the current value of the semiconductor light-emitting device group LEDs, is a good LED driver circuit. 电路中设置有两个磁环, 振荡磁环T1001原边T1001a、 振荡磁环T1001上管驱动副边TlOOlb和振荡磁环T1001下管驱动副边TlOOlc为同一磁环的不同绕组,振荡磁环T1002原边T1002a、振荡磁环T1002上管驱动副边T1002b、振荡磁环T1002下管驱动副边T1002c为另一磁环的不同绕组; 振荡磁环T1001上管驱动副边T1001b、 振荡磁环T1002上管驱动副边T1002b和半桥上管驱动电阻R1002串联后与半桥上管Q1001 的基极和发射极连接; 振荡磁环T1001下管驱动副边T1001c、 振荡磁环T1002下管驱动副边T1002c和半桥下管驱动电阻R1003串联后与半桥下管Q1002的基极和发射极连接; 半桥电容上C1002和半桥电容下C1003串联后两端接整流电路D1001的输出; 辅助直流电压源DC1001给控制模块ASIC供电,控制模块ASIC输出连接电控开关S1002的控制说明书端, 电控开关S1002的开关两端连接振荡磁环T1002下管驱动副边T1002c; 电路起振后, 控制模块ASIC控制电控开关S1002闭合或打开, 即使振荡磁环T1002退出或加入自激振荡, 导致电路输出两个不同的频率; 因为谐振电感Lrl001、 谐振电容C1004、 输出整流电路D1004、 半导体发光器件组LEDs—起形成感性负载,逆变电路的不同输出频率导致负载电流变化,最终导致流经半导体发光器件组LEDs的电流大小发生变化, 达到发明目的。 Circuit set two magnetic oscillation ring T1001 primary side T1001a the oscillating magnetic T1001 tube-driven secondary side TlOOlb and oscillating magnetic T1001 the tube drive secondary TlOOlc for different windings of the same magnetic oscillation ring T1002 the primary side of T1002a, oscillation magnetic T1002, tube drive secondary T1002b, the oscillating magnetic T1002 tube drive the secondary T1002c another magnetic winding; the the oscillating magnetic T1001 tube drive on the secondary side T1001b, oscillating magnetic T1002 the tube drive secondary T1002b and half bridge the tube drive resistor R1002 series with the base and emitter of the half-bridge tube Q1001 is connected; tube drive the secondary T1001c oscillating magnetic T1001, the oscillating magnetic T1002 tube drive secondary side of T1002c tube and the half-bridge driver for series resistor R1003 is connected with the base and the emitter of the half-bridge tube Q1002; half-bridge capacitor C1002 and C1003 series half-bridge capacitor connected at both ends of the output of the rectifying circuit D1001; auxiliary DC voltage source DC1001 ASIC power supply to the control module, control module ASIC output connection control manual end of the electronically controlled switch S1002, electronically controlled switch S1002 switch connected at both ends of the oscillation tube drive the secondary magnetic T1002 T1002c; circuit start-up, the control module ASIC control electronically controlled switch S1002 closed or open, even if the oscillating magnetic T1002 leave or join the self-oscillation, causing the circuit to output two different frequencies; the resonant inductor Lrl001, resonant capacitor C1004, output rectifier circuit D1004, semiconductor light-emitting device group LEDs- forming the inductive load, the inverter circuit of the type of output frequency causes the load current changes, eventually leading to changes in the size of current flowing through the semiconductor light emitting device group LEDs, to achieve the purpose of the invention.

当控制模块ASIC输出PWM脉宽调制信号时,电控开关S1002按PWM信号的占空比闭合或断开, 从而使自激振荡电路按P丽占空比在两个工作频率之间切换, 从而导致输出的负载电流为两种幅值的电流按PWM占空比切换; 改变P丽信号占空比的大小, 即改变负载电流中两种幅值的占比, 从而改变输出平均电流的大小, 从而用分段调频的方式实现输出平均电流的连续改变; 若在半导体发光器件组LEDs电流路径中接入电流采样电路,将采样信号反馈到控制模块ASIC, 并按照反馈信号与目标值的比较结果来改变PWM占空比, 即能控制输出至半导体发光器件组LEDs的平均电流恒定在目标值附近。 When the control module ASIC output PWM pulse width modulation signal, the electronic control switch S1002 is closed by the duty cycle of the PWM signal or disconnect P Lai duty cycle to switch between the two operating frequency, so that the self-oscillating circuit, which output load current for both the amplitude of the current is switched by the PWM duty cycle; change the size of the P signal duty, i.e. the proportion of the two amplitude change in load current, thereby changing the size of the average output current, thus Break FM manner to achieve a continuous change of the average output current; current sampling circuit, if the access in the the LEDs current path of the semiconductor light emitting device group will be sampled signal feedback to the control module ASIC and in accordance with the comparison result of the feedback signal with a target value to change the PWM duty cycle, which can control the output constant in the vicinity of the target value to the average current of the LEDs of the semiconductor light-emitting device group.

该实施例中控制模块ASIC的信号地与整流电路D1001输出的负端连接, 控制模块ASIC 的信号输入端与信号地间并接稳压管Z1001 , 该稳压管Z1001起到信号电压的整流和篏位两个作用,控制模块ASIC的信号输入端经电阻R1004后连接至命令开关S1001 ,命令开关S1001 的另一端连接命令电源VCMD, 或与整流电路D1001输入的火线连接, 或与零线连接, 命令电源VCMD为任何与火线或零线构成回路并有压差的电压源。 Negative terminal control module ASIC D1001 output signal with a rectifier circuit in this embodiment, the control signal input terminal of the module ASIC and the signal ground and connected between the to play signal voltage rectifier the regulator Z1001, the regulator Z1001 and Clamp on the role of control the module ASIC signal input terminal via the resistor R1004 is connected to the command switch S1001 command to connect the other end of the switch S1001 power command VCMD, or connected with a FireWire input of the rectifier circuit D1001, or connected with the zero line, The power command VCMD of any loop and constitute with FireWire or zero line dropout voltage source. 当命令开关S1001闭合时,控制模块ASIC接收到输入的电压信号, 将该电压信号作为控制命令, 控制模块ASIC按事先定义控制电控开关S1002闭合或断开, 或输出某一占空比的PWM信号, 使电路输出频率为某一自激振荡频率或为两种自激振荡频率的某一占空比的组合; 当命令开关S1001断开时, 输入电压信号消除, 控制模块ASIC信号接收端不再接收到电压信号, 控制模块ASIC将该电压信号的消失视作另一命令, 控制模块ASIC改变其输出从而改变电控开关S1002的开关状态, 或输出另一占空比的P丽信号, 使电路输出频率为另一自激振荡频率或为两种自激振荡频率的另一占空比的组合, 达到发明目的。 When the command switch S1001 is closed, the control the module ASIC receives an input voltage signal, the voltage signal as the control command, the control module ASIC controlled power switch S1002 is closed or disconnected, or outputs a PWM duty cycle at a pre-defined signal, the circuit output frequency of a self-oscillating frequency or duty cycle for the two self-excited oscillation frequency of a combination; when command switch S1001 is disconnected, the input voltage signal canceller, the control module the ASIC signal receiving end does not longer receive the voltage signal, the control module ASIC of the disappearance of the signal voltage deemed to another command, the control module ASIC to change its output so as to change the switching state of the electrically controlled switch S1002, or an output to another duty cycle signal P Li, The circuit output frequency to another self-oscillating frequency or two self-oscillating frequency to another duty cycle combination, to achieve the purpose of the invention. 应当理解的是, 这里所描述的方法可以以各种形式的硬件、 软件、 固件、 专用处理机或者它们的组合实现。 It should be understood that the methods described herein can be in various forms of hardware, software, firmware, special PROCESSING, or combinations thereof to achieve. 系统模块(或者方法步骤的逻辑流程)之间的连接可能不同, 根据这里给出的指导, 相关领域的普通技术人员将能够设计出本发明的这些以及类似的实施方式, 都应落入本发明的范围内。 The connections between the system modules (or method steps of the logic flow) may be different, according to the guidance given herein, related to those of ordinary skill in the art will be able to design the present invention, these and similar embodiment of the present invention should fall into the range. 以上公开了本发明的多个方面和实施方式, 本领域的技术人员会明白本发明的其它方面和实施方式。 A plurality of aspects and embodiments of the present invention is disclosed above, the skilled in the art will understand that other aspects and embodiments of the present invention. 本发明中公开的多个方面和实施方式只是用于举例说明, 说明书并非是对本发明的限定, 本发明的真正保护范围和精神应当以权利要求书为准。 The plurality of aspects and embodiments of the present invention is disclosed only for illustrative purposes, the specification is not limited to the present invention, the true scope and spirit of the present invention should prevail claims.

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Uluslararası SınıflandırmaH05B41/36
Ortak SınıflandırmaY02B20/185, H05B41/2827
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