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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, a variable output frequency segments self-oscillation inverter, characterized in that the power supply is provided with an inverter switching circuit, the coupling circuit consisting of a plurality of current transformers, switches and load circuit, constitute self oscillating inverter circuit, controlled by a switch consisting of a plurality of current transformer coupling circuit portion of the current transformer to participate or withdraw from 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。 , As described in claim 1 segment variable output frequency of self-excited oscillation inverter, wherein the plurality of current transformer coupled circuit consisting of at least two mutually independent coupling coefficient 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。 , As described in claim 1 segment variable output frequency of self-oscillation inverter, characterized in that said setting of the circuit a plurality of current transformers, is wound on the core coil, transformers The primary windings are connected in series, are connected to the inverter switching circuit and the load circuit power switch; each transformer has two secondary windings, one of which a secondary winding of a transformer and another transformer After the secondary windings are connected in series via a power inverter drive resistance switching circuit switch base and emitter connected and the other two secondary windings are connected in series via the base drive resistor and the inverter switching circuit under the power switch pole and the emitter is connected, by means of a switch, controlling at least one current transformer participate or withdraw from the self-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。 According to claim 3, wherein the output frequency of self-oscillation segmentation variable power inverter, wherein the switch and connected to the primary winding of a current transformer coil; and connected to a current or at least one secondary winding of the transformer.
、 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。 According to claim 3, wherein the output frequency of self-oscillation segmentation variable power inverter, characterized in that in any one of the current transformer secondary rewound have a control winding, the secondary winding is controlled by one switch and 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。 According to claim 5, wherein the output frequency of self-oscillation segmentation variable power inverter, wherein said secondary control winding series with 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。 According to claim 1, wherein the output frequency of self-oscillation segmentation variable power inverter, wherein the set of a plurality of current transformers in the circuit, is wound on the core coil, mutual inductance the primary windings are connected in series, are connected with the power switch and load circuit of the inverter switching circuit; each transformer has two secondary windings, the switch is controlled by selecting one or more current transformers connected to the secondary winding In the inversion switch circuit respectively, at the base of the power switch are 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。 According to claim 1, wherein the output frequency of self-oscillation segmentation variable power inverter, wherein the set of a plurality of current transformers in the circuit, is wound on the core coil, mutual inductance The primary winding is connected in parallel with each other, wherein the switch control to select one of the primary side of the transformer and the inverter switching circuit and a power switch connected to the load circuit; Each transformer has two secondary windings, respectively, connected in series, respectively, after the inverse change the switch circuit, the power switch at the base are connected in series or parallel, respectively, to select one or more current transformers connected to the secondary winding of the book claim inverter switching is controlled by the switching circuit at the power switch base 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 the output frequency of claim 1, wherein the variable segments of the self-oscillating inverter, wherein the switch is a mechanical switch or an electronic switch.
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 variable output frequency segment of the self-oscillation inverter 1, characterized in that the self-oscillating inverter circuit when the power to start or receive foreign start command from the control command control switch is in a position to determine, 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。 1, according to claim 1, wherein the output frequency of self-oscillation segmentation variable power inverter, characterized in that it comprises a control module and a sampling circuit, sampling circuit through the acquisition of the load circuit current sampling, feedback to the control module, P Lai control module controls the duty cycle of the switch according to the duty cycle of open or closed to the current average value constant in the vicinity of 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。 Power supply according to claim 1, characterized in that, further comprising a rectifying circuit, external communication line and neutral after the rectifier is connected to the inverter switching circuit, the control module is connected to the rectified output signal to the negative terminal, with the external communication line constituting the circuit or zero FireWire and any difference between the voltage source via a command switch to a wire connected to the signal input of the control module, the command switch is closed, the control module receives the voltage signal and a voltage source The signal is treated as a control command, so that the switch is closed or open, the circuit operates in a self-oscillation frequency, or a combination of frequencies formed by the PWM duty cycle, or the circuit by an output current set of work, when the command When the switch is turned off, the voltage control signal disappears module is regarded as another command, so that the switch is open or closed, the circuit operates in another self-oscillation frequency or by another form of frequency duty cycle P Lai combinations thereof, or the circuit output current set by another job.
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 as comprising any of the claims 12 to claims 1 a self-oscillating inverter.
、 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。 An output current of the variable power supply, characterized in that the switching power supply is provided with an inverter circuit, a control module, a switch, a plurality of current transformers, resonant inductor, resonant capacitor, the output of the rectifier circuit, and the DC load, resonant inductor and the resonance capacitors series resonant circuit, and the resonant capacitor connected to the output rectifier circuit, the output of the output rectifier circuit and connected to a DC load, the control module in accordance with an external command so that the switch is closed or open, so that at least one current transformer participate or withdraw from the self-oscillation, to change the self-oscillation frequency to change the size of the output current to DC load.
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。 5. The power supply of claim 14, wherein the DC load includes 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。 6. The power supply of claim 14, characterized in that the output rectifier circuit comprises 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。 7, the power supply as claimed in claim 14, wherein each, characterized in that said plurality of current transformers, are in series on the core wound with a coil, transformer primary winding connected in series with the resonant inductor, a transformer having two secondary windings, respectively, after the driving of the inverter switching circuit in series, under the power switch, wherein a current transformer around which a book or secondary control winding claim, took a switch and current transformer A winding, the control module so that the switch is open or closed, so that the current transformer to participate or withdraw from the self-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 any one of the power supply according to claim 14-17, characterized in that the control module output PWM signal to switch on or off according to the PWM signal is closed, so that by switching control of the current transformer according to the PWM signal to exit or participation from oscillation, so that self-oscillation frequency than a pulse width of the PWM signal is switched between the two frequencies, by changing the PWM pulse ratio to change time to work on both the proportion of self-oscillation frequency to change the current output to the DC load The mean 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 according to claim 18, characterized in that it further includes a sampling signal output current average value of feedback to the sampling module control module, the control module according to differences in sampling and target values to change the output pulse width of the PWM signal ratio of the output to the DC load current constant around the average 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。 , Such as 14 or 18 or 19, wherein the variable output current of the power to claim, characterized by further comprising a rectifier circuit, the external AC line and neutral by the rectifier is connected to the inverter switching circuit control module signally connected to the negative terminal of the rectified output, constituting the external AC or FireWire zero line circuit and any difference between the voltage source via a command switch to a wire connected to the signal input of the control module, the command switch is closed, the control module receives the voltage signal of the voltage source and the signal is treated as a control command, so the switch is closed or open, the circuit operates in a self-oscillation frequency, or a combination of frequencies formed by P Lai duty cycle, or the circuit output current set by an operation, when the command switch is turned off, the voltage control signal disappears module is regarded as another command, so that the switch is open or closed, the circuit operates in another self-oscillation frequency or by another the frequency of a combination of duty cycle P Lai formed, or the circuit output current set by another job.
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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 Manual segmentation variable output frequency self-oscillating inverter output current variable power technology 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 a variable output frequency segment of self-oscillating inverter, especially having a gas discharge lamp dimming function self-oscillating electronic ballast inverter and output current variable power supply.

背景技术 Background

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。 DC into AC of a self-oscillating inverter is widely used, particularly common in low-cost gas discharge lamp self-oscillating electronic ballast or electronic 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-oscillating inverter circuit to achieve the oscillation frequency adjustable or adjustable output power, it is more difficult.

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 proposes a relatively simple self-oscillating electronic ballast dimming scheme, but the program will result in different half-bridge and down tube opening time, the upper and lower tube in an asymmetric state, brings the reliability of the circuit 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 discloses a capable and reliable operation can change the operating frequency of self-oscillation power scheme, but this scheme, the auxiliary power supply voltage fluctuations will affect the oscillation frequency and output power, so the proposed 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. 6 presents a low-cost segment dimming self-oscillating electronic ballast, the program envisages the use of a toggle switch short oscillation ring of different tap to achieve segmentation 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 in fact switch part after winding shorted significantly reduce the output voltage, and therefore can not ensure reliable operation of the circuit.

发明内容 DISCLOSURE

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。 To overcome these shortcomings, the main object of the present invention is to provide a reliable operation of the output frequency or output power variable self-oscillation power.

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 technical problem to be solved is: how to make the self-oscillating inverter circuit can operate at different oscillation frequencies, and can be changed as desired operating frequency; when the load circuit forming a non purely resistive equivalent load, if the circuit can change the operating frequency, it 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。 Usually works self-oscillating inverter circuit is the use of a magnetic loop as a current transformer, the inverter output current is coupled to the secondary ring for driving the inverter switches to form a self-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 to determine the parameters of the inverter output current to different magnetic coupling between the secondary side will produce a different self-oscillation frequency, for example, different magnetic saturation depth will lead to different 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, an object of the invention is achieved by:

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。 A variable output frequency segment of self-oscillating inverter power supply that is provided with an inverter switching circuit coupling circuits, switches and load circuit consisting of a plurality of current transformers, constitute a self-oscillating inverter circuit, the switch control multiple electrical specification current transformer coupled circuits consisting of parts of the current transformer to participate or withdraw from the self-oscillation to change the self-oscillation frequency.

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 current transformer coupled circuit consisting of a plurality of at least two independent coupling coefficient 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。 The setting of a plurality of current transformers in the circuit, is wound on the core coil, the transformer primary winding in series with each other, are connected to the inverter switching circuit in the power switch and load circuit; each transformer has two secondary windings, wherein after a secondary winding and a secondary winding of another transformer connected in series a transformer, a power driver via a base resistor of the inverter switching circuit and the emitter of the switch connection, the drive inverter switching circuit resistance and the power switch at the base and an emitter connected after the other two secondary windings connected in series, by means of a switch, controlling at least one current transformer participate or withdraw from the self-oscillation to the 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。 The switch and connected to the primary winding of a current transformer coil; or a current transformer and connected to at least one secondary winding.

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 either a current transformer having a secondary rewind control winding, the secondary winding is controlled by one switch and connected. 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。 The secondary windings of the series with a control 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。 The setting of a plurality of current transformers in the circuit, is wound on the core coil, the transformer primary winding in series with each other, are connected with the power switch and load circuit of the inverter switching circuit; each mutual inductance has two secondary windings, connected by a switch control to select one or more current transformer secondary winding on the inverter switching circuit, respectively, at the base of the power switch are 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。 The setting of a plurality of current transformers in the circuit, is wound on the core coil, the transformer primary winding parallel to each other, wherein the power switch is controlled by selecting one of the primary side of the transformer and inverter switching circuit switch and load circuit connection; each transformer has two secondary windings, and the inverter switching circuit, at the base of the power switch are connected in series, respectively, after each series or parallel, respectively, connected by a switch control to select one or a plurality of current transformer secondary winding and the inverter switching circuit, at the base of the power switch are connected in series.

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

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-oscillating inverter circuit when the power to start or receive foreign start command from the control command control switch in a determined 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 comprising a control module and a sampling circuit, sampling circuit sampling by the current acquisition of the load circuit, the feedback to the control module, the control module controls the duty cycle of the PWM duty cycle switch Press to open or close, to the average current constant near the target.

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 includes a rectifier circuit, the external AC line and neutral by the rectifier is connected to the inverter switching circuit, a control module connected to the rectified output signal negative terminal, will form a loop with an external AC FireWire or zero line and there Any difference between the voltage source via a command switch to a wire connected to the control module signal input terminal, a control module output connection switches, command specification to make the switch is closed, the control module receives the voltage signal from the voltage source and the signal seen as a control command, so that the switch is closed or open, the circuit operates in a self-oscillation frequency, or a combination of frequencies formed by P Lai duty cycle, or the circuit by an output current set of work, when the command switch When turned off, the voltage control signal disappears module is regarded as another command, so that the switch is open or closed, the circuit operates in another self-oscillation frequency by frequency or in combination with another form of the duty cycle P Lai or the circuit output current set by another job.

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 ballast, including any of the above as a self-oscillating inverter.

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。 An output current of the variable power supply, the power switch is provided with an inverter circuit, a control module, a switch, a plurality of current transformers, resonant inductor, resonant capacitor, the output of the rectifier circuit, and the DC load, consisting of the resonant inductor and resonant capacitor in series resonant circuit, and the resonant capacitor connected to the output rectifier circuit, output of the output rectifier circuit and connected DC load, the control module in accordance with an external command to make the switch is closed or open, so that at least one current transformer participate or withdraw from the self-oscillation, to change the self-oscillation frequency, change the output to the current size of the DC load.

较佳地, 直流负载包括至少一发光二极管。 Preferably, at least one DC load comprises a 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 are wound on the core has primary winding coil, transformer after each other in series with the resonant inductor connected in series, each transformer has two secondary windings, respectively, after the reverse tandem drive variants of the switching circuit at the power switch, which has a current transformer secondary winding or control winding, switch and took a winding of a current transformer, the control module so that the switch is open or closed, so that the current transformer participate 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 of the switching signal by P Lai closing or opening, so that by switching control of the current transformer signal to exit or press P Lai participate self-oscillation, so that self-oscillation frequency by PWM signal pulse ratio between the two frequency switching, by changing the pulse width ratio P Lai to change the proportion of time working on two self-oscillating frequency 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 includes a sampling signal output current average value of feedback to the control module of the sampling module, a control module according to differences in sampling and target values P Korea to change its output signal pulse width ratio, the output to the DC load the average current constant in the vicinity of the target.

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。 The power supply also includes a rectifier circuit, the external AC line and neutral by the rectifier is connected to the inverter switching circuit, a control signal module connected to the negative terminal of the rectifier output, will form a loop with an external FireWire or zero line and AC voltage Any difference between the voltage source via a command switch to a wire connected to the signal input of the control module, the control module is connected to the output switch, the command switch is closed, the control module receives the voltage signal of the voltage source and the control signal is seen as command, so that the switch is closed or open, the circuit operates in a self-oscillation frequency, or a combination of frequencies formed by PWM duty cycle, or the circuit by an output current set of work, when the command switch is off, The voltage control signal disappears module is regarded as another order, the specification so that the switch is open or closed, the circuit operates in another self-oscillation frequency by frequency or in combination with another form of P Lai duty cycle, or to circuit output current set by another.

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

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 provides a reliable functioning of the output frequency or output variable of a self-oscillating power, or gas with a discharge lamp dimming function self-oscillating electronic ballast, but the present invention is a result of self-oscillation mode to achieve the change the output frequency or output power, compared with his oscillating circuit, reached the relatively low cost effectiveness. 本发明也可以提出一种输出电流可变的电源。 The present invention may also propose a variable output current of the power supply.

附图说明 Brief Description

下面结合附图和实施例对本发明进一步说明。 Below in conjunction with the accompanying drawings and the embodiment of the present invention is further described below.

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

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

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

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

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

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

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

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 specific circuit diagram of the present invention for an electronic ballast to an embodiment;

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

图10为本发明一种LED驱动电源的实例示意图。 10 Examples of the present invention an LED driver power supply schematic.

附图中标号说明: Brief Description of the 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; Current transformer coupled circuit consisting of a plurality of 102-;

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; Load matching circuit 203; 204- control circuit; 205 electrical control switch;

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

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

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

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

208—上管驱动电阻; 209—下管驱动电阻; 说明书 The 208- tube drive resistance; 209 under the control drive resistance; instructions

210—隔直电容上; 211—隔直电容下; 210- compartment straight capacitance; 211- blocking capacitor lower;

301—上管; 302—下管; 303—负载匹配电路; The 301 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 electrical control switch;

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

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

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

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

308—上管驱动电阻; 309—下管驱动电阻; The 308- tube drive resistance; 309 under the control drive resistors;

310—隔直电容上; 311—隔直电容下; 310- compartment straight capacitance; capacitance under 311 straight septum;

401—上管; 402—下管; The 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 compartments on blocking capacitors; capacitance under 405 straight septum; 406a- primary ring; the 406b- tube drive the secondary ring;

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

407a—磁环原边; 407b- -磁环上管驱动副边; 407a- primary ring; 407b- - magnetic tube drive on 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; Tube drive under 407c- secondary ring; 407d- ring control winding; the 408 tube-driven resistance; 409 under the control drive resistor; 410 control switch;

501—上管; 502—下管; The 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- interlocking switch tube section; pipe portion 505b- interlocking switch under; 506a- primary ring; the 506b- secondary magnetic tube drive; under 506c- secondary magnetic tube drive;

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

508—上管驱动电阻; 509—下管驱动电阻; The 508- tube drive resistance; 509- lower tube drive resistors;

510—隔直电容上; 511—隔直电容下; The blocking capacitor 510 compartments; in blocking capacitors 511- compartment;

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

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

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- linkage tube switch part; pipe portion 605b- interlocking switch under; 605c- interlocking switch magnetic primary section; Instructions

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

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

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

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

608—上管驱动电阻; 609—下管驱动电阻; The 608- tube drive resistance; 609- lower tube drive resistors;

610—隔直电容上; 611—隔直电容下; 610- compartment straight capacitance; 611- blocking capacitor lower;

701—上管; 702—下管; 701 on the 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 two-position switch;

706a—磁环原边; 706b—磁环上管驱动副边; 706a- primary ring; the 706b- tube drive the secondary ring;

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

707a—磁环原边; 707b—磁环上管驱动副边; 707a- primary ring; the 707b- tube drive the secondary ring;

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

708—上管驱动电阻; 709—下管驱动电阻; The 708 tube-driven resistance; 709- lower tube drive resistors;

710—隔直电容上; 711—隔直电容下; 710 compartments on blocking capacitors; 711- blocking capacitor lower;

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-charging resistors; C1 together with the vibration capacitance; D2- diac;

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 canal drive resistors; R3- half bridge canal drive resistors;

Q1—半桥上管; Q2—半桥下管; Tla—振荡磁环T1原边; Q1- half bridge canal; Q2- half bridge canal; 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- ring T1 pipe oscillations on the secondary drive; under an oscillating magnetic Tic T1 secondary tube drive;

T2a—振荡磁环T2原边; T2b—振荡磁环T2上管驱动副边; T2a- oscillating magnetic T2 primary; 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- shaking T2 tube drive the secondary ring; T2d- oscillating magnetic T2 control winding;

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- auxiliary resistance;

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

C2—隔直电容上; C3—隔直电容下; C2- compartment straight capacitance; C3- compartment under blocking capacitors;

901—上电启动或收到启动指令; 901- power-up or after receiving a start command;

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

903—启动完成吗? 903- startup is complete it?

904—按控制命令, 置开关于产生所需频率的位置。 904- Press control commands, set to open on the location of the desired frequency generation.

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

R1001—起振充电电阻; C1001—起振电容; D1002—双向触发二极管; R1001- start-charging resistors; C1001- vibrating capacitor; D1002- diac;

D1003—二极管; R1002 半桥上管驱动电阻; D1003- diode; R1002 half-bridge canal drive resistors;

R1003 半桥下管驱动电阻; R1003 half-bridge canal drive resistors;

Q1001—半桥上管; Q1002—半桥下管; Q1001- half bridge canal; Q1002- half bridge canal;

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

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

TlOOlc—振荡磁环T1001下管驱动副边; TlOOlc- shaking tube drive the secondary ring T1001;

T1002a—振荡磁环T1002原边; T1002a- oscillating magnetic T1002 primary;

T1002b—振荡磁环T1002上管驱动副边; On T1002b- oscillating tube drive the secondary ring T1002;

T1002c—振荡磁环T1002下管驱动副边; T1002c- oscillating tube drive under secondary ring T1002;

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; On the half-bridge capacitor C1002; C1003 under 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; 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; S1001- command switch;

S1002—电控开关。 S1002- electronically controlled switch.

具体实施方式 DETAILED DESCRIPTION

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。 Refer to the drawings, the coupling circuit (102) of the present invention, the output frequency of the variable segments of a self-oscillating inverter is powered by the switching circuit (101), consisting of a plurality of current transformers, the load circuit (103) 1 and switch (104) constituting, wherein the output of the inverter switching circuit (101) is connected to the coupling circuit (102) and a load circuit (103) comprising a series circuit composed of a plurality of current transformers, the coupling circuit comprising a plurality of current transformers ( 102) is connected to the output of the inverter switching circuit (101) as an inverter switching circuit (101) is driven.

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 external control command to control the switch (104), consisting of a plurality of current transformer coupling circuit (102) transformers participate or withdraw from parts of the self-oscillation, to change the self-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。 Coupling circuit (102) of said plurality of current transformers consisting of at least two independent coupling coefficient current transformer components.

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。 Some load on power start to lose power to a load frequency or have specific requirements, only to meet the requirements of frequency or power to ensure that the load start properly, when you connect this kind of load, the output frequency or output Figure 1 shown variable power supply self-oscillation can be started in accordance with the load characteristics of the starting frequency of claims, a coupling circuit consisting of a plurality of current transformers (102) when the oscillation frequency of participation in several specific transformer for the start frequency; Then follow the accompanying drawings 9 method, when the self-excited oscillation start when the power supply or external command to give a start command, the switch (104) for controlling the specific instructions mutual participation 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 load startup is complete, and then follow 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) for DC input, or may be derived from the preceding stage PFC rectifier circuit, or from an external DC power source. 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。 After the inverter switching circuit (101) to obtain direct input from the inverter switching circuit (101) internal start-up circuit or an external circuit to generate start-up trigger pulse, the inverter switching circuit (101) operates to convert AC into DC input coupled to the output circuit (102) and a load circuit (103) connected in series circuit configuration, wherein the coupling circuit is composed of a plurality of current transformers (102) comprising a plurality of current transformers alternating current from the inverter switching circuit (101) for generating output coupled output is connected to an inverter switching circuit (101) for driving the inverter switching circuit (101), generating self-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 an external control command control switch (104), consisting of a plurality of current transformer coupling circuit (102) transformers participate or withdraw from parts of the self-oscillating inverter switching circuit (101) to the load circuit (103) i.e., the current oscillation frequency changes; when the load circuit (103) is a non purely resistive, the oscillation frequency change causes the output current to the load circuit (103) of the power change.

附图2是本发明的一实施例示意图。 Figure 2 is an embodiment of the present invention. Fig. 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。 The tube (201), the down tube (202), the blocking capacitor (210) and blocking capacitor at (211) consisting of a half-bridge inverter circuit, the tube (201) and the down tube (202) connected to the midpoint of output sequentially (203) and the other end connected to a primary ring (206a), the primary ring (207a) and load matching circuit (203), load matching circuit with blocking capacitor (210) and blocking capacitor at (211) connected to the connection point; the circuit is provided with two magnetic ring, magnetic primary side (207a), the magnetic tube drive the secondary side (207b) and a lower magnetic tube drive the secondary side (207c) for the different windings of the same ring, magnetic primary (206a), the magnetic tube drive secondary (206b) and a lower magnetic tube drive secondary (206c) for the different windings another ring; and the ring-tube drive the secondary side (206b) and magnetic tube drive the secondary side (207b) on the ring and the tube drive resistors (208) tandem tube (201) on the composition of the driving circuit; pipe driving under the secondary ring (206c), under magnetic tube drive the secondary side (207c) and By tube drive resistor (209) in series next tube (202) drive circuit. 当外来起振脉冲开通下管(202 )后, 半桥起振。 When the external opening of the down tube vibrating pulse (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) outputs a control signal in accordance with the requirements of external control commands the electric control switch (205) is closed or open; when the power control switch (205) is opened, the load current flows through the primary ring (206a) and magnetic original side (207a), after which the two ring groups each secondary output were superimposed on each drive tube (201) and the down tube (202) to form a fixed self-oscillation frequency; when the electric control switch (205 ) is closed, ring the primary (207a) is short-circuited, the load current flows through only the primary ring (206a), the magnetic tube drive the secondary side (207b) and the secondary side of the tube at the drive ring (207c) output voltage are zero, only the tube drive the secondary side (206b) and a lower magnetic tube drive the secondary side (206c) are driven on the tube (201) and the down tube (202) on the ring to form another fixed self-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。 Accordingly, the control circuit (204) in accordance with the requirements of external control commands the electric control valve (205) is closed or open, that can change the self-oscillation frequency, or change the power through a load matching circuit (203) outputs.

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 diagram of another embodiment of the present invention, the working principle of the embodiment shown in the drawings are substantially the same as 2, only manual control switch is electrically controlled pole change switch (305) and controls the oscillating magnetic secondary side ; when the control circuit (304) controls the electric pole control switch (305) is closed, the magnetic tube drive the secondary side (307b) and a lower magnetic tube drive the secondary side (307c) is short-circuited, respectively, quit shaking, self-oscillation frequency is only determined by another ring; when the pole electrically controlled switch (305) is open, the two magnetic rings are involved in oscillation, the oscillation frequency of the formation of another.

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 diagram of another embodiment of the invention, the tube (401) and the down tube (402) consisting of a half-bridge inverter output in turn is connected to the primary ring (406a), the primary ring (407a) and load matching circuit (403), and then connected to the DC blocking capacitor (404) and blocking a connection point at (405) capacitor; blocking capacitor (404) and lower compartments blocking capacitor (405) connected in series, which connected across both ends of the DC input; the circuit is provided with two magnetic ring, magnetic primary (407a), the magnetic tube drive the secondary side (407b), tube drive under the secondary ring (407c) and magnetic control winding (407d) for the different windings of the same ring, ring the primary side (406a), the magnetic tube drive the secondary side (406b) and tube drive under secondary ring (406c) is another ring of different windings ; the magnetic tube drive secondary (406b), the magnetic tube drive after the secondary side (407b) and the tube drive resistor (408) connected in series with the pipe (401) of the base and emitter, tube composition ( 401) of the drive circuit; tube drive under secondary ring (406c), after the pipe is connected at the secondary side of the drive ring (407c) and a lower tube drive resistors (409) in series with the down tube (402) of the base and emitter , composed of the down tube (402) driving circuit; a control switch (410) and magnetic control winding (407d) and connected.

当外来起振脉冲开通下管(402)后, 半桥起振。 When the external opening of the down tube vibrating pulse (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 opened, the two magnetic participate in the self-oscillation, the oscillation frequency of a fixed form; when the control switch (410) is closed, the magnet on the secondary side tube drive

(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) tube drive the secondary side (407c) of the output voltage ring and are Clamp on to zero and quit shaking, self-oscillation is determined by another ring to form another fixed oscillation frequency, to achieve the output frequency change. 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。 If the load matching circuit (403) external load matching a non purely resistive, the oscillation frequency is controlled to change the result in the controlled change in 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 Figure 5 is a schematic view of another embodiment of the present invention, the tube (501) and the down tube (502) consisting of a half-bridge inverter circuit, in turn connected to the output of the primary ring (506a), the primary ring (507a ) and load matching circuit (503), and then connected to the DC blocking capacitor (510) and blocking at (511) junction capacitance; the blocking capacitor (510) and lower blocking capacitor (511) connected in series after two Termination DC input; the circuit is provided with two magnetic ring, magnetic primary (507a), the tube drive the secondary ring

(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 Tube drive at the secondary side (507b) and ring (507c) of the same ring of different windings, the primary ring (506a), the magnetic tube drive the secondary side (506b) and a lower magnetic tube drive the secondary side (506c ) for the different windings of another ring; ring on the secondary side tube drive

(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 drive the secondary ring (507b) by a switch on the linkage portion (505a) to select one of the top tube drive resistor (508) connected to the upper tube (501) of the base and emitter after the series; tube drive under the secondary ring (506c) or tube driving under the secondary ring (507c) by the interlocking switch tube portion (505b) in which the connection after selecting one of the lower tube driver resistor (509) connected in series to the down tube (502 ) The base and emitter; set two different magnetic coupling factor, so that each ring different oscillation frequencies alone manual access to the circuit is formed in which the magnetic tube drive the secondary side (506b) and magnetic next tube drive the secondary side (506c) access to the circuit when the oscillation frequency of the load starting characteristics consistent with the requirements. 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。 On initial power-up, the control circuit (504) always control linkage switch causes the magnetic tube drive the secondary side (506b) and a lower magnetic tube drive the secondary side (506c) access to the circuit, ensure that the load starting characteristics are met; alien Start-up pulse to the half-bridge inverter start-up, according to the magnetic tube drive circuit secondary side (506b) and a lower magnetic tube drive the secondary side (506c) access to the start frequency operation of the circuit is formed. 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 external control commands interlocking switch on the tube section under (505a) and interlocking switch tube portion (505b) between the two secondary magnetic switch, so ring On the secondary side tube drive (506b) and a lower magnetic tube drive secondary (506c) access to the circuit, or the tube drive secondary (507b) on the ring and the lower ring-tube drive the secondary side (507c) access circuit, so that the circuit between two different oscillation frequency handover, when the load matching circuit (503) is formed equivalent non purely resistive load, the output frequency change results in a change of output power, 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 illustration of another embodiment of the present invention, and the embodiment shown in the drawings works 5 is substantially similar, except that the two magnetic rings by the primary side are also primary side interlocking switch magnet portion (605c) connected to selection the circuit; set two different magnetic coupling factor, so that each ring different oscillation frequencies alone access to the circuit formation. 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) in accordance with the requirements of external control commands to control the interlocking switch between the two magnetic switching circuit will oscillate between two different frequency handover, 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, shown in the drawings it works embodiment 5 is substantially similar, except that the two magnetic primary side by a double switch (705) to select the access circuit, and Two magnetic secondary side into the series; set two different magnetic coupling factor, so that each ring different oscillation frequencies alone access to the circuit formation. 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 the requirements of external control commands to control two-position switch (705) between the two magnetic switch, the primary ring is not connected to the secondary output voltage is zero, the oscillation frequency by an access magnetic decision circuit; therefore, the switching between the two magnetic ring, even if the circuit between two different switching oscillation frequencies, to achieve the object of the invention.

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 diagram of the present invention, the PFC output rectifier circuit for an electronic ballast or an embodiment of a half-bridge inverter circuit D1 is connected to the half-bridge transistors Q1 and Q2 form a half bridge of the tube; vibrating charging Inverse semi bridge, half bridge Q1 and Q2 formed tube; resistance Rl, start-up capacitor C1 and diac D2 composed of start-up circuit, the diode D3 in the circuit start-up after start-up capacitor C1 Clamp on a low level variable oscillating half-bridge output sequentially connecting ring T1 primary Tla, oscillating magnetic T2 primary T2a, resonant inductor Lr, TL fluorescent filament, resonant capacitor Cr, the other side is connected to the filament by fluorescent TL on blocking capacitor C2 and connected at the midpoint C3 blocking capacitor; magnetic circuit is provided with two oscillating magnetic T1 primary Tla, tube drive on the secondary side oscillating magnetic Tib T1 and T1 lower tube driven oscillating magnetic secondary Tic as different windings in the same ring, the oscillating magnetic T2 primary T2a, the oscillating magnetic secondary T2 tube drive T2b, oscillating magnetic T2 tube drive and oscillating magnetic secondary T2c T2 control winding ring of another T2d different windings; the oscillating magnetic tube drive T1 secondary Tlb, the oscillating magnetic secondary T2 tube manual drive T2b and half bridge driver after the tube is connected in series with a resistor R2 base and emitter of transistor Q1 and a half bridge; oscillation T1 pipe driving under the ring secondary Tlc, oscillating magnetic T2 tube drive and half after the secondary side T2c bridge canal drive resistor R3 is connected in series with the half-bridge transistor Q2 of the base and the emitter; and a DC blocking capacitor C2 By blocking capacitor connected to a rectifier circuit or PFC circuit D1 output ends after the C3 series; auxiliary DC voltage source VDC, auxiliary resistors R4, and oscillating magnetic control switch SI T2 T2d control winding is connected at both ends after the series;-secondary DC voltage source VDC voltage is enough to pass through the auxiliary resistor R4 oscillation T2 magnetic saturation value, or set the auxiliary DC voltage source VDC voltage value of zero and an auxiliary resistor R4 is set to an appropriate value, the auxiliary oscillating magnetic resistor R4 T2 control winding T2d the ring is turned on, the oscillating magnetic T2 tube driven by the secondary side T2b and oscillating magnetic secondary T2c T2 tube drive output is Clamp on to zero.

初始状态时, 置控制开关S 1开路。 When the initial state, set the control 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 the proper voltage AC input to the rectifier circuit or PFC circuit D1, D1 rectifier circuit or PFC circuit AC input into a DC output, the start-up charging resistor R1 to the start-up capacitor C1 is charged, the voltage on the capacitor C1 from vibration gradually lift D2 high until DIAC breakdown, the start-up capacitor C1 by way trigger diode D2 and resistor R3 half bridge tube drive to a half bridge transistor Q2 base discharge, half-bridge transistor Q2 is turned on, the start-up circuit; for control switch S1 is open, two ring are involved in oscillation at a fixed frequency oscillation circuit, half bridge Q1 and Q2 are composed of half bridge inverter half-bridge output current flowing through the resonant inductor Lr, resonant capacitor Cr and fluorescent TL The filament ends in the resonant capacitor Cr eventually generate a high voltage breakdown TL fluorescent, fluorescent lights TL. 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 you need to dimming, position control switch S1 is closed, if the auxiliary DC voltage source VDC voltage value is set to a high enough value, the flow through the auxiliary resistors R4 and T2 magnetic oscillation control winding T2d current so that the magnetic saturation Exiting the oscillation, the oscillation frequency by changing the magnetic determine another self-oscillation frequency; when the control switch S 1 is closed setting, if the auxiliary DC voltage supply VDC voltage value is set to zero and the auxiliary resistor R4 is set to an appropriate value, the oscillating magnetic tube driven on T2 T2b and oscillating magnetic secondary T2 tube drive output of the secondary side T2c Clamp on to exit the oscillation is zero, the oscillation frequency is changed by the self-excited oscillation frequency determined by another ring; because Fluorescent TL has a breakdown, part of the half-bridge inverter output current flowing through the resonant inductor Lr fluorescent TL, the self-oscillation frequency changes lead to flow through the resonant inductor Lr and fluorescent TL of current changes, so that the power output to the fluorescent TL change, achieve the dimming 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 the present invention is a method of starting. 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。 When the frequency of the coupling segment of the present invention of a self-oscillating power variable load connected to the start frequency has specific requirements for the power of the present invention can start according to the load on the frequency of claims, consisting of a plurality of current transformers circuit (102) for a few specific frequency oscillation transformer participation for that start 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 may be a method in accordance with the accompanying drawings 9 gradual completion of start: electric start or when receiving a start command at step (901), the process proceeds to step (902) is set to an open position on a Start frequency switching controlling the specific transformer participate oscillation, resulting in the start 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。 Then follow the steps (903) to determine whether startup is complete, if not complete, hold switch position unchanged; if the startup is complete, the process proceeds to step (904) by a control command, set to open on the location of the desired frequency generation. 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。 Description of this method can be manual control is completed, the control circuit can also be set up within the power of the present invention is completed.

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。 Said that in some instances, may be provided with a control module and a sampling circuit, sampling circuit by current sampling collected the load circuit, the feedback to the control module, the control module controls the PWM duty cycle, which reached the average output current constant at a target Efficacy nearby. 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 one implementation, but are not intended to limit the invention, illustrative purposes only. 应用例一 Application Example One

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。 Some examples of the power of the above can be applied directly to the gas discharge lamp electronic ballasts. 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。 Electronic ballasts (Electricalbal last), refers to the use of electronic technology-driven electric light, thus producing the desired lighting electronics. 与之对应的是电感式镇流器(或镇流器)。 Corresponding is inductive ballast (or ballasts). 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, can even be integrated electronic ballast and lamp together, at the same time, electronic ballasts usually both starter function, so in turn the province to separate starter. 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 may also have more features, such as fluorescent lights can make the process can be used by power inverter DC power supply. 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 of the power used in electronic ballasts, but also to achieve the dimming effect.

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 illustrative only and are not intended to limit the invention, power applications in the field of the present invention is extremely wide, this is only one application implementation.

应用例二 Application Example Two

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, Some examples of the above supply can be directly applied to the output current of the variable power source, such as LED drive power, of course, it may be the driving power source of 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。 An output current of the variable power supply, the power switch is provided with an inverter circuit, a control module, a switch, a plurality of current transformers, resonant inductor, resonant capacitor, the output of the rectifier circuit, and the DC load, consisting of the resonant inductor and resonant capacitor in series resonant circuit, and the resonant capacitor connected to the output rectifier circuit, output of the output rectifier circuit and connected DC load, the control module in accordance with an external command to make the switch is closed or open, so that at least one current transformer participate or withdraw from the self-oscillation, to change the self-oscillation frequency, change the output to the current size of the DC load.

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。 Output rectifying circuits 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 are wound on the core has primary winding coil, transformer after each other in series with the resonant inductor connected in series, each transformer has two secondary windings, respectively, after the reverse tandem drive variants of the switching circuit at the power switch, which has a current transformer secondary winding or control winding, switch and took a winding of a current transformer, the control module so that the switch is open or closed, so that the current transformer participate 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。 Moreover, the control module output signal switching Press P doctors PWM signal is switched on or off, so that by switching control of the current transformer according to the PWM signal to exit or participation in self-oscillation, so that self-oscillation frequency by a pulse width of the PWM signal ratio switching between two frequencies, to change the time scale work on two self-oscillation frequency to change the output to the DC load current specification by changing the size of the average P Lai pulse width ratio.

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 comprises a current average value of the sampled output signal is fed back to the control module sampling module, the control module according to the difference of the sample values and the target value change its output signal pulse width ratio P Li, the average output current to a DC load constant value in the vicinity of 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 also includes a rectifier circuit, the external AC line and neutral by the rectifier is connected to the inverter switching circuit, a control module connected to the rectified output signal negative terminal, will form a loop with an external FireWire or zero line and AC voltage difference any voltage source via a wire connection command to switch to a signal input of the control module, the control module is connected to the output switch, the command switch is closed, the control module receives the voltage signal of the voltage source and the control command signal is considered so that the switch is closed or open, the circuit operates in a self-oscillation frequency, or a combination of frequencies formed by P Lai duty cycle, or the circuit by an output current set of work, when the command switch is off, The voltage control signal disappears module is regarded as another command, so that the switch is open or closed, the circuit operates in another self-oscillation frequency by frequency or in combination with another form of P Lai duty cycle, or the circuit According to another target value of the output current job.

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 of the present invention enables the use of adjustable LED light on the drive. 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。 D1001 output rectifier circuit connected to the half-bridge inverter half bridge and half-bridge canal canal Q1001 Q1002 thereof; start-up charging resistor R1001, capacitor C1001 and start-up diac D1002, D1003 diode composed of the start-up line; half bridge pipe Q1001 and Q1002 half bridge tube composed in turn connected inverter output oscillating half-bridge ring T1001 primary T1001a, oscillating magnetic T1002 primary T1002a, resonant inductor Lrl001, resonant capacitor C1004; C1004 other end of the half-bridge resonant capacitor capacitance Connecting the upper half-bridge capacitor C1002 and C1003 midpoint; resonant capacitor C1004 at both ends and connected to the output rectifier circuit D1004, D1004 outputs the output rectifier circuit and then the semiconductor light emitting device group LEDs; output rectification circuit D1004 can also contain at least one light-emitting diodes; the circuit structure of the output to the current value of the semiconductor light emitting device group less affected by LEDs LED voltage drop is a better LED drive 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。 The circuit is provided with two magnetic oscillating magnetic T1001 primary T1001a, the oscillating magnetic T1001 tube drive under TlOOlb and oscillating secondary magnetic T1001 tube drive TlOOlc different secondary windings of the same ring, oscillating magnetic T1002 primary T1002a, the oscillating magnetic T1002 tube drive secondary T1002b, oscillating magnetic T1002 tube drive T1002c different secondary windings another ring; and the oscillating magnetic T1001 tube drive secondary T1001b, shaking the ring T1002 tube drive secondary T1002b and half bridge driver after the tube is connected in series with a resistor R1002 half-bridge canal Q1001 the base and emitter; oscillating magnetic T1001 tube drive secondary T1001c, oscillating magnetic T1002 tube drive secondary T1002c and half-bridge drive resistors R1003 tube is connected in series with a half after the bridge tube Q1002 base and emitter; the half-bridge capacitor C1002 and C1003 Half-Bridge across the capacitor connected in series of output rectifier circuit D1001; auxiliary DC voltage source DC1001 ASIC power supply to the control module, the control module ASIC output terminal electrically connected to the control manual control switch S1002 and S1002 switches at both ends of the connection electronically controlled switch shaking ring T1002 tube drive secondary T1002c; circuit after start-up, the control module ASIC control electronically controlled switch S1002 is closed or open, even if oscillating magnetic T1002 leave or join the self-oscillation, resulting circuit outputs two different frequencies; because the resonant inductor Lrl001, resonant capacitor C1004, output rectifier circuit D1004, from the semiconductor light emitting device group LEDs- the formation of the inductive load, the output frequency of the inverter circuit is different cause the load current changes, eventually leading to flow through the semiconductor light emitting device group LEDs current size changes, 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 according to the duty cycle of the PWM signal is closed or disconnected, so that the self-excited oscillation circuit according to P Lai duty cycle switching between the two operating frequencies, thus causing the output load current into two current amplitude switching by PWM duty cycle; P Lai signal duty cycle to change the size, ie the load current change in the proportion of two amplitudes, thus changing the size of the average output current, in order to achieve continuous changes in the output of the average current FM piecewise manner; if access to current sampling circuit in the semiconductor light emitting device group LEDs current path, the sampled signal back to the control module ASIC, and compare the results in accordance with the feedback signal from the target value to change the PWM duty cycle, which can control the output to an average current of semiconductor light emitting device group LEDs is constant in the vicinity of the target.

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。 In this embodiment the control module output signal ASIC with the negative terminal of the rectifier circuit D1001 is connected between the control module ASIC signal input and signal ground and connected to the regulator Z1001, Z1001 play the regulator signal voltage rectifier and Clamp on two roles, a control signal input module ASIC via the resistor R1004 is connected to the command after the switch S1001, S1001 switch command and the other end connected to command the power VCMD, or connect with Firewire input rectifier circuit D1001, or connect with the zero line, Command Power VCMD and differential pressure of any voltage source with FireWire or zero line form a loop. 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 module ASIC receives the input voltage signal, the voltage signal as a control command, the control module ASIC according to pre-defined controls electronically controlled switch S1002 closing or opening, or the output of a PWM duty cycle signal, the output frequency of the circuit for a self-oscillation frequency or a combination of two self-oscillating frequency of a particular duty; S1001 switches off when the command input voltage signal cancellation control module ASIC signal receiver does not stop receiving voltage signals to control the voltage signal disappears module ASIC is regarded as another command, control module ASIC change its output to change the electronic control switch S1002 switch state, or the output of another duty P Lai signal to circuit output frequency is another self-oscillation frequency or the duty cycle of the combination of two other self-oscillation frequency, 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 appreciated that the methods described herein may be in various forms of hardware, software, firmware, special purpose processors, or a combination thereof. 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。 Connection system modules (or the logic flow of method steps) may differ between, according to the guidance given here of ordinary skill in the pertinent art will be able to design these and similar embodiments of the present invention, the present invention should fall within 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。 Disclosed above a number of aspects and embodiments of the present invention, those skilled in the art will appreciate 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。 Various aspects and embodiments of the invention disclosed only for illustration description is not limiting the present invention, the true scope and spirit of the present invention should be subject to the claims.

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