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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 segmentation variable frequency output of a self-oscillating inverter, characterized in that the power switch is provided with an inverter circuit, a current transformer coupled to the plurality of circuit composed of switches and load circuit, constitute self oscillating inverter circuit, controlled by a switch consisting of a plurality of current transformer coupled circuit portion of the current transformers involved in or out of 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 the claim 1 output frequency variable segment of self-oscillating inverter, wherein the plurality of current transformer coupled circuit consisting of at least two mutually independent coupling coefficient of the 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。 , According to the claim 1 output frequency variable segment of self-oscillating inverter, characterized in that the circuit provided in a plurality of current transformers, is on the core wound with a coil, transformer the primary winding in series with each other and respectively connected to the switching circuit of the inverter power switch and the load circuit; 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 the power inverter switch resistance and the drive circuit switch base and emitter is connected, after the other two secondary windings are connected in series via the base drive resistors and the inverter switching circuit at the power switch pole and the emitter is connected, by means of a switch, controlling at least one current transformer participate or withdraw 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 the variable segments of the self-oscillation inverter, characterized in that in any one of the current transformer and then around a secondary control winding, the secondary winding is controlled by a switch and a 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, characterized in that the secondary winding of the series with a control 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, characterized in that the circuit provided in a plurality of current transformers, is on the core wound with a coil, mutual inductance the primary winding in series with each other, are connected with the power switch and the load circuit of the inverter switching circuit; each transformer has two secondary windings, connected to the switch control by the selection of one or more current transformer secondary winding respectively, to the inverter circuit switch, the power switch at the base 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, characterized in that the circuit provided in a plurality of current transformers, is on the core wound with a coil, mutual inductance the primary winding is connected in parallel to each other, controlled by a switch to select one of the transformer primary side of the inverter switching circuit and the power switch connected to the load circuit; each transformer has two secondary windings, respectively, after respectively series with inverse change the switching circuit at the base of the power switch are connected in series or parallel, respectively, to select one or more connected to the current transformer secondary winding to claim the book and the inverter switching circuit switching is controlled by the lower 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 segment of 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 segment variable frequency output of a self-oscillating inverter 1, characterized in that the self-oscillating inverter circuit at power-up or external start command received by the control command control a switch to determine the position, 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 by further comprising a control module and a sampling circuit, sampling circuit through the acquisition of the load circuit current sampling, the feedback to the control module, control module controls the duty cycle of the switch by P Li duty cycle open or closed to the current average value constant in the vicinity of the target value. 、 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 as claimed in claim 1, characterized in that it further comprises a rectifier circuit, external AC line and neutral by the rectifier circuit connected to the inverter switching control signal module connected to the negative terminal of the rectifier output, will FireWire external communication line constituting the circuit or zero and there is no difference between the voltage source via a switch command to a conductor connected to the signal input terminal 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 frequency combination or one formed by the PWM duty cycle, or the circuit by an output current target value operation, 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 to the other self-oscillation frequency or alternatively P Lai frequency duty cycle is formed combinations thereof, or the circuit output current target value 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, wherein the power supply switching circuit is provided with an inverter, a control module, a switch, a plurality of current transformers, resonant inductor, resonant capacitor, the output of the rectifier circuit, and a DC load, resonant inductor and the resonance capacitors series resonant circuit, and the resonant capacitor connected to the output of the rectifier circuit, the output of the rectifier circuit and connected to the DC load control module according to an external command so that the switch is closed or open, so that at least one current transformer participate or withdraw 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 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。 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, wherein said plurality of current transformers, are in series in the cores are wound with a coil, the transformer primary winding is connected in series with the resonant inductor, a transformer has two secondary windings, respectively, on the rear tandem drive inverter switching circuit at the power switch, which has a current transformer or a book about the secondary winding claims control, switch and took a current transformer a winding, the switch control module open or closed, so that the current transformer participate or withdraw 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。 According to any one of claims 14 to 17 power claims, characterized in that the control module outputs a PWM signal to the PWM signal switches are closed or disconnected, so that by switching control of the current transformer by PWM signal or withdraw from participation oscillation, so that self-oscillation frequency by a pulse width of the PWM signal than switching between two frequencies, by changing the PWM pulse width ratio to change the date to two self-oscillation frequency proportional to the output current to change 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 of claim 18, characterized in that it further comprises sampling signal is fed back to the average output current 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 average DC load current is constant in the vicinity of the target value.
、 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 of the output current of the variable power claim, characterized in that it further comprises a rectifier circuit, external AC line and neutral after the rectifier is connected to the inverter switching circuit connected to the control module signal to the negative terminal of the rectified output, constituting FireWire external AC or any neutral circuit and the voltage difference between the voltage source via a switch command to a conductor connected to the signal input terminal of the control module, the command switch is closed, the control module receives voltage signal to the voltage source and the control command signal seen that the switch is closed or open, the circuit operates in a self-oscillation frequency frequency combination or one formed by P Li duty cycle, or the circuit according to a target value of the output current job, 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 to the other self-oscillation frequency or alternatively the frequency of a combination of duty cycle P Lai form or another by the circuit output current target value work.
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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 frequency output of the 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 and power inverter output current variable power supply.

背景技术 Background technique

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 an oscillation frequency is adjustable or adjustable output power, 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 opening time at the half pipe up and down, up and down the tube so that the asymmetry in the state, bringing the circuit reliability influences.

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 reliable work can change the operating frequency of self-oscillation power scheme, but this scheme auxiliary supply voltage fluctuations will affect the oscillation frequency and output power, and therefore the auxiliary power supply design is proposed higher demand, the relatively high cost.

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 shorted oscillating magnetic ring 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 the switching section after winding shorted greatly reduce the output voltage, and therefore can not ensure reliable operation of the circuit.

发明内容 SUMMARY

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 in 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, output power can be changed.

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, using a magnetic loop as a current transformer, the inverter output current is coupled to the secondary magnetic switch for driving the inverter, 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, the inverter output current to a different magnetic coupling between the secondary side will have 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, the object of the present 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。 An output frequency segment variable self-oscillating inverter, the power switch is provided with an inverter circuit, coupling circuit, switches and load circuit composed of a plurality of current transformers, form a self-oscillating inverter circuit by a plurality of electrically manual control switch current transformer coupled circuit consisting of part of the current transformers involved in or out of 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。 Coupling the plurality of current transformer circuit consisting of at least two mutually 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。 Set in the plurality of circuit current transformer 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, after which a secondary winding and a secondary winding of a transformer of another transformer in series, the base drive resistors and the power of the inverter switching circuit and the emitter of the switch connected via drive resistors and the inverter circuit switching the power switch at the base and emitter connected after the other two secondary windings connected in series, with a switch to control at least one current transformer participate or withdraw 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 and then around a secondary control winding, the secondary winding is controlled by a switch and a pick. 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。 Set in the plurality of circuit current transformer is wound on the core coil, the transformer primary winding in series with each other, are connected with the power switch and the load circuit of the inverter switching circuit; each mutual inductance has two secondary windings, controlled by a switch to select one or more connected to the 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。 Set in the plurality of circuit current transformer is wound on the core coil primary winding of the transformer parallel with each other, wherein the power switch is controlled by the selection of a transformer primary circuit of the inverter switch switch and load circuit is connected; each transformer has two secondary windings, and the inverter circuit switch, the power switch at the base are connected in series, respectively, after each series or parallel, respectively, controlled by a switch to select a connection or a plurality of current transformer secondary winding and the inverter circuit switch, the power switch at the base 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 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-oscillating inverter circuit at power-up or receive external start command from the control command control switch in a position to determine, 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 press the switch 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, further comprising a rectifying circuit, external AC line and neutral by the rectifier circuit connected to the inverter switching control signal module connected to the negative terminal of the rectifier output, constituting the circuit and external communications and has FireWire or zero line any difference between the voltage source via a command switch to a wire connected to the control module signal input terminal connected to the control module output switch command specification to make the switch is closed, the control module receives a 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 frequency combination or one formed by P Li duty cycle, or the circuit by an output current target value operation, when the switch command when disconnected, the module control disappear voltage signal is regarded as another command, so that the switch is open or closed, the circuit to the other self-oscillation frequency by frequency or in combination with another P Lai duty cycle is formed or output current of the circuit according to another target 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 that is provided with an inverter switching circuit, a control module, a switch, a plurality of current transformers, resonant inductor, resonant capacitor, the output of the rectifier circuit, and a DC load, the resonant inductor and resonant capacitor in series composed of resonant circuit, and the resonant capacitor connected to the output of the rectifier circuit, the output of the rectifier circuit and connected to the DC load control module according to an external command so that the switch is closed or open, so that at least one current transformer participate or withdraw 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, the DC load comprising 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 the core has a primary winding coil transformer connected in series with each other after the resonant inductor connected in series, each transformer has two secondary windings, respectively, after the series against the driver variants 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, switch control module open or closed, so that the current transformer or participation 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 Li closed or disconnected, so that by switching control of the current transformer signal by P Li quit or participate in self-excited oscillation, so that self-oscillation frequency by a pulse width of the PWM signal than switching between two frequencies, 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 size of the average 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 the feedback to the control module sampling module, a control module according to differences in sampling and target values to change its output P Lai signal pulse width ratio, the output to the 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。 The power supply also includes a rectifier circuit, external AC line and neutral by the rectifier circuit connected to the inverter switching control signal module connected to the negative terminal of the rectifier output will constitute a loop with an external FireWire or zero line and AC voltage any difference between the voltage source via a switch command to a conductor connected to the signal input terminal of the control module, control module connected to the output switch, the command switch is closed, the control module receives the voltage of the source voltage signal and the control signal is treated command, so that the switch is closed or open, the circuit operates in a self-oscillation frequency frequency combination or one formed by the PWM duty cycle, or the circuit by an output current target value operation, when the command switch is off, the disappearance of the control module voltage signal is regarded as another command, so that the manual switch is open or closed, the circuit to the other self-oscillation frequency by frequency or in combination with another P Lai duty cycle is formed, or to according to another circuit output current target value.

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 work output frequency or output power variable self-oscillation power, or a gas having 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, in comparison with his excited oscillation circuit, reached a 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 illustrated.

图1是本发明的总体结构的方框图; FIG. 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; Figure 2 is a schematic diagram of an example 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; FIG. 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 concrete circuit diagram of the present invention for an electronic ballast in an embodiment;

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

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; Coupling circuit composed of a plurality of current transformers 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; 203 load matching circuit; 204- control circuit; 205 electrical control switch;

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

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

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

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

208—上管驱动电阻; 209—下管驱动电阻; 说明书 The 208- tube drive resistor; 209 lower tube drive resistance; instructions

210—隔直电容上; 211—隔直电容下; 210- compartment on blocking capacitors; 211- DC blocking capacitor lower;

301—上管; 302—下管; 303—负载匹配电路; The tube 301; 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 switches;

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

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

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

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

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

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

401—上管; 402—下管; The tube 401; 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 on the barrier blocking capacitors; capacitance 405 at straight septum; 406a- magnetic primary; 406b- magnet tube drive on the secondary side;

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

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

501—上管; 502—下管; 501 on the 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; Tube 505a- interlocking switch part; tube portion 505b- interlocking switch under; 506a- primary magnetic ring; magnetic tube drive on 506b- secondary; under 506c- magnet 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; 507b- magnet tube drive on the secondary side; under 507c- magnet tube drive the secondary side;

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

510—隔直电容上; 511—隔直电容下; The blocking capacitor 510 spacer; lower 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; 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- linkage tube switch portion; tube portion 605b- interlocking switch under; 605c- interlocking switch magnetic primary part; Instructions

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

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

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

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

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

610—隔直电容上; 611—隔直电容下; 610- compartment on blocking capacitors; 611- DC 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- magnetic primary; 706b- magnet tube drive on the secondary side;

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

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

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

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

710—隔直电容上; 711—隔直电容下; 710 on the barrier blocking capacitors; 711 blocking capacitor lower;

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

R1—起振充电电阻; C1一起振电容; D2—双向触发二极管; R1- vibrating charging resistors; C1 capacitance transducer together; 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- tube drive half bridge resistance; R3- tube drive half bridge resistance;

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- oscillation on bead T1 secondary drive tube; Tic under an oscillating magnetic T1 secondary drive tube;

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 magnetic drive tube T2 secondary; 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- secondary 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 on blocking capacitors; 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 is set to open on start position generate frequencies;

903—启动完成吗? 903- complete it start?

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 position to produce the desired frequency.

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- vibrating 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 drive tube resistance;

R1003 半桥下管驱动电阻; R1003 half-bridge drive tube resistance;

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

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 ring T1001 tube drive the secondary side;

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

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 magnetic T1002 tube drive secondary;

T1002c—振荡磁环T1002下管驱动副边; T1002c- oscillating tube drive under secondary magnetic 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; The half-bridge capacitor C1002; C1003 under the 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 switches;

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 the self-oscillating inverter is powered by the switching circuit (101), consisting of a plurality of current transformers, the load circuit (103) and a switch (104) constituting the output of the inverter wherein a switching circuit (101) is connected to the coupling circuit (102) and a load circuit (103) consisting of a series circuit composed of a plurality of current transformers, current transformer coupled circuit consisting of a plurality of ( 102) is connected to the output of the inverter switching circuit (101) as an inverter switching circuit (101) of the drive.

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 coupled circuit (102) in the part of the transformers involved in or out of self-excited 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 started to lose power to the load frequency or have specific requirements, only to meet the requirements of frequency or power load in order to ensure normal startup, when connecting this kind of load, the output frequency or output Figure 1 shown the self-oscillating power variable power supply, in accordance with the characteristics of the load start starting frequency requirements, a coupling circuit composed 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 on the power supply or external command to start giving the 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 the load starts is completed, then 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。 Switching the input of the inverter circuit (101) is a DC input, or from a preceding 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 a DC input by an inverter switching circuit (101) internal or external start-up circuit start-up circuit generates a 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 structure, wherein the coupling circuit is composed of a plurality of current transformers (102) consisting of 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) to produce 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 coupled circuit (102) in the part of the transformers involved in or out of self-oscillating inverter switching circuit (101) to the load circuit (103) current oscillation frequency that is changed; when the load circuit (103) for non-pure resistance, the change in the current oscillation frequency causes the output 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 a schematic view of an example 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。 On the tube (201), the down tube (202), DC 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 the output sequence (203) connected to the other end of the primary magnet (206a), the primary magnet (207a) and a load matching circuit (203), the load matching circuit and blocking capacitor (210) and blocking capacitor at (211) the connection point is connected; the circuit is provided with two magnetic, magnetic primary (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 magnetic ring, magnetic primary (206a), the magnetic tube drive the secondary side (206b) and a lower magnetic tube drive the secondary side (206c) for the different windings of another magnetic ring; magnetic tube drive on the secondary side (206b) and magnetic tube drive the secondary side (207b) on the ring and tube drive resistors (208) tandem tube (201) on the composition of the driving circuit; tube drive under secondary magnetic ring (206c), under magnetic tube drive the secondary side (207c) and lower tube drive resistors (209) in series under the pipe (202) of the drive circuit. 当外来起振脉冲开通下管(202 )后, 半桥起振。 When opened under alien vibrating pulse tube (202), the half-bridge start oscillating. 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 opened; when the power control switch (205) is opened, the load current flows through the primary magnet (206a) and magnetic original edge (207a), after the two magnetic rings each two secondary output respectively superimposed on each drive tube (201) and the down tube (202) to form a fixed self-oscillation frequency; when the electrical control switch (205 ) closed, the magnetic primary (207a) is short-circuited, the load current flows through only the primary magnetic ring (206a), the magnetic tube drive the secondary side (207b) and the secondary drive tube under the bead (207c) output voltage are zero, only the tube drive the secondary side (206b) and a lower magnetic tube drive the secondary side (206c), respectively, on the drive tube (201) and the down tube (202) on the ring, forming 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 external control commands requires the electrical control switch (205) is closed or open, i.e. self-oscillation frequency change, or change the power load through a matching circuit (203) output.

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, shown in the drawings works in Example 2 is substantially the same, only manual control switch is changed to two-pole electrical switch (305) and controls the oscillating magnetic secondary ; 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 magnet; when the pole electrical control switch (305) is open, 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 side of the magnetic ring (406a), the primary magnet (407a) and load matching circuit (403), and then connected to the DC-blocking capacitor (404) at the connection point and blocking at (405) capacitor; DC blocking capacitor (404) and a compartment under blocking capacitor (405) connected in series, which DC input ends connected to both ends; the circuit is provided with two magnetic, magnetic primary (407a), the magnetic tube drive the secondary side (407b), the secondary drive tube under magnetic ring (407c) and magnetic control winding (407d) for the different windings of the same magnetic ring, magnetic primary (406a), the magnetic tube drive the secondary side (406b) and tube drive under secondary magnetic ring (406c) is another magnet of different windings ; the magnetic tube drive the secondary side (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 the emitter, tube composition ( 401) of the drive circuit; tube drive under secondary magnetic ring (406c), connected at the secondary side after the tube drive magnet (407c) and a lower tube drive resistors (409) in series with the down tube (402) of the base and emitter composition of the down tube (402) of the drive 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 opened under alien vibrating pulse tube (402), the half-bridge start oscillating. 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, two magnetic participate in the self-oscillation, the formation of a fixed oscillation frequency; when the control switch (410) is closed, the magnetic tube drive secondary

(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 and magnetic ring are Clamp on to zero and exit oscillate, the self-oscillation is determined by another ring, forming 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) to the non-matching external load pure resistance, the oscillation frequency is controlled by changing the output power leads to a controlled change, 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 magnet (506a), the primary magnet (507a ) and load matching circuit (503), and then connected to the DC-blocking capacitor (510) and blocking at (511) capacitive junction; the blocking capacitor (510) and blocking lower capacitance (511) connected in series after two termination DC input; the circuit is provided with two magnetic, magnetic primary (507a), the magnetic 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 Tube drive at the secondary side (507b) and magnetic (507c) for the same magnet of different windings, magnetic primary (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 magnetic ring; magnetic ring on the tube drive secondary

(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 magnetic tube drive on the secondary side (507b) by a switch on the linkage portion (505a) and select one of the driving resistance on the tube (508) connected to the upper tube (501) of the base and emitter after the series; tube drive under secondary magnetic ring (506c) or secondary drive tube under the bead (507c) by the interlocking switch tube portion (505b) in which the connection after selecting one of the lower tube drive resistor (509) connected in series to the down tube (502 ) base and emitter; set two different magnetic coupling factor, so that each bead different oscillation frequencies alone manual access to the circuit is formed, wherein the secondary magnetic drive tube (506b) and the lower magnetic tube drive the secondary side (506c) access to the circuit when the oscillation frequency of the load line with start-up characteristic 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 make the magnet switch control linkage 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; foreign start-up of the inverter half-bridge pulse oscillation and the magnetic tube drive circuit according to the secondary side (506b) and a lower magnetic tube drive the secondary side (506c) access starting 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 command portion of the tube under the interlocking switch (505a) and interlocking switch tube portion (505b) between two secondary magnetic switch, make bead on the secondary side of the drive tube (506b) and a lower magnetic tube drive the secondary side (506c) access to the circuit, or the tube drive the secondary side (507b) upper and lower magnetic bead 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 non-pure resistive equivalent load, change the output frequency causes a change in output power to achieve the object 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, shown in the drawings works substantially similar to Example 5, except that two of the primary ring are linked by a primary magnet switch portion (605c is) to select connection the circuit; set two different magnetic coupling factor, so that each bead different oscillation frequencies alone access 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 switch control linkage between the two magnetic switching circuit will oscillate between two different switching frequencies, 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 and works substantially similar to Example 5, but the two primary magnetic ring by a double switch (705) to select the access circuit, and two magnetic ring into a secondary series; set two different magnetic coupling factor, so that each bead different oscillation frequencies alone access 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, not the primary access to the magnetic secondary output voltage is zero, the oscillation frequency by an access the magnetic circuit of the decision; therefore, the switching between the two magnetic ring, even if the circuit is oscillating between two different switching 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 tube; start-up charge inverse half bridge Q1 and Q2 form a tube half-bridge; resistance Rl, start-up capacitor C1 and two-way trigger diode D2 consisting of start-up circuit, the diode D3 in the circuit start-up after start-up capacitor C1 Clamp on at a low level variable oscillating half-bridge outputs are connected in sequence toroid T1 primary Tla, oscillating magnetic T2 primary T2a, resonant inductor Lr, fluorescent TL filament, resonant capacitor Cr, the other side of the filament through a fluorescent lamp TL is connected to the DC blocking capacitor C2 and connection C3 at the midpoint of the DC blocking capacitor; magnetic circuit is provided with two oscillating magnetic T1 primary Tla, tube drive the oscillating magnetic secondary Tib T1 and T1 oscillating magnetic drive down tube is secondary Tic different windings of the same magnetic oscillating magnetic T2 primary T2a, the oscillating magnetic secondary drive tube T2 T2b, oscillating magnetic drive tube T2 secondary T2c and T2 magnetic oscillation control winding T2d another magnetic ring different windings; the oscillating magnetic tube drive T1 secondary Tlb, the oscillating magnetic T2 T2b pipe specification driven secondary and post-tube drive half bridge resistor R2 is connected in series with the base and the emitter half bridge transistor Q1; oscillation under magnetic tube drive T1 secondary Tlc, oscillating magnetic T2 tube drive after secondary T2c and half bridge tube 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, the oscillation control switch SI control both ends of the magnet winding T2d T2 is connected in series after;-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 is set to zero and the auxiliary resistor R4 to the appropriate value, the auxiliary oscillating magnetic resistor R4 when the control winding T2d ring T2 is turned on, the oscillating magnetic T2 tube driven by oscillating magnetic secondary T2b and T2 tube drive output is secondary T2c 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 an appropriate voltage AC input to the rectifier circuit or PFC circuit D1, a rectifier circuit or PFC circuit D1 AC input into a DC output, the start-up charging resistor R1 to the start-up capacitor C1 is charged, the voltage on the oscillator capacitor C1 from gradually lift high until dIAC D2 breakdown, the start-up capacitor C1 by way trigger diode D2 and resistor R3 and a half drive to the canal bridge half bridge transistor Q2 base discharge, half-bridge transistor Q2 is turned on, the start-up circuit; because control switch S1 is open, two magnetic rings are involved in oscillation circuit oscillating at a fixed frequency, half bridge Q1 and Q2 form a half bridge inverter tube half-bridge output current flowing through the resonant inductor Lr, resonant capacitor Cr and fluorescent TL filament, the both ends of the resonant capacitor Cr to generate a high voltage breakdown resulting in fluorescent lamps TL, TL fluorescent lights. 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 power supply voltage VDC DC 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 exit oscillation, the oscillation frequency by changing the decision of another magnetic self-oscillation frequency; when the position control switch S 1 is closed, when the auxiliary DC voltage source VDC to the value is set to zero and the secondary resistor R4 is set to an appropriate value, the oscillating magnetic tube driven on T2 T2b and secondary oscillating magnetic secondary T2c T2 tube drive output Clamp on to exit the oscillation is zero, the oscillation frequency is changed by the self-excited oscillation frequency magnetic another decision; because fluorescent TL has been a breakdown, a 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 current changes, the output power to the fluorescent lamp 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, a promoter methods. 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 coupling segments of the present invention, the self-oscillation of the variable power supply is connected to the load start frequency has specific requirements for the power supply of the present invention can be performed according to the load starting frequency requirements, consisting of a plurality of current transformers circuit (102) in a few specific frequency transformer participation oscillation frequency for that start. 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 supply of the present invention in accordance with the accompanying drawings 9 progressive approach to complete the boot: When you start or electric start command received at step (901), the process proceeds to step (902) is set to produce an open position on the starting frequency of the switch involved in controlling the specific transformer oscillation, resulting in the activation 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 is set to open on the 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 description of this method can complete manual control, the control circuit may also be provided 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。 Some examples of the above, you can also set up 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 PWM duty cycle, thereby achieving the average output current constant at the target value 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, merely illustrative purposes. 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 directly applied 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), it 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 more and more use of electronic ballasts, compact and lightweight and can even be integrated electronic ballast and lamp together, at the same time, the electronic ballast can usually both starter function, so the province can be 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 lamp can be made via the power inverter process may use a 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, the field of application of the power supply of the present invention is extremely wide, this is only an 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 power of the above can be directly applied to the output current of the variable power source, such as LED drive power, of course, also be a driving power source other illumination device,

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 that is provided with an inverter switching circuit, a control module, a switch, a plurality of current transformers, resonant inductor, resonant capacitor, the output of the rectifier circuit, and a DC load, the resonant inductor and resonant capacitor in series composed of resonant circuit, and the resonant capacitor connected to the output of the rectifier circuit, the output of the rectifier circuit and connected to the DC load control module according to an external command so that the switch is closed or open, so that at least one current transformer participate or withdraw 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, is wound on the core has a primary winding coil transformer connected in series with each other after the resonant inductor connected in series, each transformer has two secondary windings, respectively, after the series against the driver variants 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, switch control module open or closed, so that the current transformer or participation 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 P Medical PWM signal switching by closing or opening, so that by switching control of the current transformer according to the PWM signal to exit or participate in self-oscillation, so that self-oscillation frequency by a pulse width of the PWM signal ratio switching between two frequencies, to change the percentage of time working on two self-oscillating 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 also includes a sampling signal output current average value of the feedback to the control module sampling module, a control module according to differences in sampling and target values to change the output pulse width ratio P Lai signal output to the average DC load current constant value in the vicinity of the target value.

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, external AC line and neutral by the rectifier circuit connected to the inverter switching control signal module connected to the negative terminal of the rectifier output will constitute 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 terminal 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 treated so that the switch is closed or open, the circuit operates in a self-oscillation frequency frequency combination or one formed by P Li duty cycle, or the circuit by an output current target value operation, when the command switch is off, the disappearance of the control module voltage signal is regarded as another command, so that the switch is open or closed, the circuit to the other self-oscillation frequency by frequency or in combination with another P Lai duty cycle is formed, 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 an 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。 Output rectifier circuit D1001 is connected to the inverter half-bridge and half-bridge, half-bridge tube tube Q1001 Q1002 composition; start-up charging resistor R1001, capacitor C1001 start-up and two-way trigger diode D1002, D1003 diode composed of vibrating lines; half bridge tube Q1001 and Q1002 tube half bridge inverter consisting of magnetic oscillating half-bridge output sequentially connecting 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 half-bridge capacitor C1003 and C1002 on the midpoint; resonant capacitor C1004 at both ends and connected to the output rectifier circuit D1004, D1004 outputs the output rectifier circuit and semiconductor light emitting device group connected LEDs; D1004 output rectifier circuit may further comprise at least one light-emitting diodes; said circuit structure of the output to the current value of the semiconductor light emitting device group LEDs is less affected by the LED forward voltage, and 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。 Magnetic circuit is provided with two oscillating magnetic T1001 primary T1001a, the oscillating magnetic T1001 tube drive under TlOOlb and secondary oscillating magnetic T1001 tube drive TlOOlc different secondary windings of the same magnetic oscillating magnetic T1002 primary T1002a, the oscillating magnetic T1002 tube drive secondary T1002b, oscillating magnetic T1002 tube drive secondary winding another T1002c different magnetic ring; the oscillating magnetic T1001 tube drive secondary T1001b, oscillating magnetic ring T1002 tube drive secondary T1002b and half after the bridge tube drive resistor R1002 is connected in series with the half bridge tube Q1001 base and emitter; oscillating magnetic T1001 tube drive secondary T1001c, oscillating magnetic T1002 tube drive secondary T1002c and half-bridge drive tube is connected in series resistor R1003 and 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 after the rectifier circuit D1001 output; 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 electronic control switch is connected shaking magnet tube drive T1002 secondary T1002c; after start-up circuit, the control module control ASIC electronically controlled switch S1002 closed or opened, even if the oscillation magnetic T1002 leave or join the self-oscillation, resulting in the output circuit of 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 leads to different load current changes, resulting in flowing 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, thereby causing the output load current of two amplitude current according to the PWM duty cycle switching; change the size of the duty cycle signal P Lai, that accounted for two kinds of change in the load current amplitude, thereby changing the size of the average output current, change in order to achieve continuous output current with average segment FM mode; 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, that is able to control the average output current semiconductor light emitting device group LEDs constant in the vicinity of the target value.

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 ASIC output signal 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 and the signal voltage rectifier Clamp on two roles, a control signal input module ASIC after the resistor R1004 is connected to the command switch S1001, S1001 switch command and the other end connected to the power command VCMD, or connected to a rectifier circuit D1001 Firewire input, or connected to the zero line, command power VCMD any pressure and there is a voltage source and the 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 predefined 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, the control module ASIC signal receiver does not longer receive voltage signals to control the voltage disappears module ASIC regarded as another command signal, the control module ASIC change its output to change the electronic control switch S1002 switch state, or another output duty cycle signal P Lai make circuit output frequency is another self-oscillation frequency or the duty cycle of a combination of two other self-oscillation frequency, 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。 Connect system modules (or the logic flow of method steps) may differ between, according to the instructions given here of ordinary skill in the relevant art will be able to design these and similar embodiments of the present invention, the present invention should fall In 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。 Above discloses various 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 present invention is disclosed only for illustrative purposes, the description is not to limit 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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