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Self-oscillating inverter power supply having variable output frequency slicing and power supply having variable output current

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Publication number
WO2013010459A1
WO2013010459A1 PCT/CN2012/078653 CN2012078653W WO2013010459A1 WO 2013010459 A1 WO2013010459 A1 WO 2013010459A1 CN 2012078653 W CN2012078653 W CN 2012078653W WO 2013010459 A1 WO2013010459 A1 WO 2013010459A1
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WO
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Prior art keywords
power
circuit
supply
self
output
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PCT/CN2012/078653
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French (fr)
Chinese (zh)
Inventor
徐一珺
叶小娟
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张曦春
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B41/00Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14Circuit arrangements
    • H05B41/26Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2825Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
    • H05B41/2827Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using specially adapted components in the load circuit, e.g. feed-back transformers, piezo-electric transformers; using specially adapted load circuit configurations
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BINDEXING SCHEME RELATING TO CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. INCLUDING HOUSING AND APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies
    • Y02B20/16Gas discharge lamps, e.g. fluorescent lamps, high intensity discharge lamps [HID] or molecular radiators
    • Y02B20/18Low pressure and fluorescent lamps
    • Y02B20/183Specially adapted circuits
    • Y02B20/185Self-resonant bridges

Abstract

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.

Description

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 Variable frequency output specification segment self-oscillation inverter, the output current of the variable power supply 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 segment of the variable frequency output of the self-oscillating inverter, especially a gas having a dimming function of a discharge lamp electronic ballast self-oscillating inverter and the output current of the 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。 The direct current into alternating current of the self-oscillating inverter is widely used, particularly common in low-cost self-oscillating gas discharge lamp 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。 However, self-oscillating inverter circuit to implement an oscillation frequency 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 presents a relatively simple self-oscillating electronic ballast dimming scheme, the program will result in different time at the half open vertical tube, the upper and lower pipe working in the asymmetric state, circuit reliability can be 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。 U.S. Patent US6696803 discloses another can change the operating frequency of self-oscillation of the power scheme to work reliably, but the volatility of the auxiliary power supply voltage scheme will affect the oscillation frequency and output power, the auxiliary power supply design therefore proposed higher requirements, 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 patent CN91217582. 6 presents a segment dimming inexpensive self-oscillating electronic ballast, which envisages the use of a toggle switch shorting the oscillating magnetic different tap achieve sub dimming. 但实际上开关短接部分绕组后将大大降低输出电压, 因而无法保证电路的可靠工作。 But actually partial winding shorted switch will 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。 In order to overcome the above deficiencies, the main object of the present invention is to provide a variable output frequency or output power of the self-oscillating A power source capable of reliable operation.

本发明要解决的技术问题是: 如何使自激振荡逆变电路能工作在不同的振荡频率, 并且能按要求改变工作频率; 当负载电路形成非纯阻性的等效负载时, 若电路能改变工作频率, 就能改变输出功率。 The present invention is to solve the technical problem: how to make the self-oscillating inverter circuit can operate in different oscillation frequencies, and can change the operating frequency required; when the load circuit is formed is not purely resistive load equivalent, if the circuit is capable of 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。 Generally works self-oscillating inverter circuit, using a current transformer as a magnetic loop, the output current of the inverter is coupled to the inverter for driving the secondary ring switch, form a self-excited oscillation. 当电路其他部分的参数确定时, 逆变输出电流到磁环副边耦合关系的不同将产生不同的自激振荡频率, 例如磁环的饱和深度不同会导致自激振荡频率不同。 When determining parameters of other parts of the circuit, the output current of the inverter to a different magnetic coupling relationship between the secondary side to produce different self-resonant frequency, for example, different lead to different self-resonant frequency of the magnetic saturation depth.

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 present invention is implemented as follows:

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。 Segment of outputting a variable frequency self-oscillation inverter power supply, which is provided with an inverter switching circuit, consisting of a plurality of current transformers coupled to the circuit, a switch and a load circuit, constituting the self-oscillating inverter circuit, by the a current transformer coupled circuit switching portion controls a plurality of current transformers electrically specification consisting of participating in or out of the self-oscillation frequency of self-oscillation is changed.

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。 A plurality of current transformers coupled circuit consisting of the coupling coefficient comprises at least two mutually independent 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 circuit provided in the plurality of current transformers, the magnetic core is wound with a coil, the transformer 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, wherein after a secondary winding and a secondary winding of another transformer in series a transformer, a power driver via a base resistor of the inverter switching circuit and the emitter of the switch connection, is connected via the base and emitter of the power switch of the inverter switching circuit and the driving resistance after the other two secondary windings connected in series, by means of a switch, controlling at least one current transformer participate or exiting the self-oscillation circuit to control 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。 Said 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 re-wound current transformer has a secondary control winding, the secondary winding is controlled by a switch and a contact. 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 winding in series 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 circuit provided in the plurality of current transformers, the magnetic core is wound with a coil, the transformer primary winding connected in series to each other, are connected to the power switch and the load circuit of the inverter switching circuit; each mutual inductance has two secondary windings, controlled by a switch or selecting a plurality of current transformers connected to the secondary winding of the inverter switching circuit, respectively, at a power base of the switching transistor is 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 circuit provided in the plurality of current transformers, the magnetic core is wound with a coil, the primary winding of the transformer in parallel with each other, wherein the power switch is controlled by the selection of the inverter switching circuit and the primary side of a transformer switch and a load circuit; each transformer has two secondary windings, and the inverter switching circuit, a power base of the switching transistor is connected in series are respectively connected in series after, or in parallel, respectively, controlled by a switch to select a connection or the secondary winding of the inverter switching circuit and a plurality of current transformer, a power base of the switching transistor is connected in series.

所述开关是机械开关或电子开关。 The switch is a mechanical or 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 foreign power-up or start command is received, by a control command from the control switch in a determined position to reach a determined 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 by sampling a current collecting load circuit, a feedback to the control module, the control module controls the duty cycle of the PWM duty cycle by switch open or closed, the current average value to a constant in the vicinity of the target value.

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

一种气体放电灯电子镇流器, 包括如上述任意一种自激振荡逆变电源。 A gas discharge lamp electronic ballast, including, for example any of the above 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。 A current variable power output, the power switching inverter circuit is provided with a control module, a switch, a plurality of current transformers, resonant inductor, resonant capacitor, an output rectifier circuit and a DC load, a resonant inductor and resonant capacitor form a serial the resonance circuit, and resonant capacitor to the output rectifier circuit, the output of the rectifier circuit and a DC load connected to the control module in accordance with an external command so that the switch is closed or opened, at least one current transformer involved in self-excited oscillation or exit to alter the self-oscillating frequency, changing the output magnitude of the current to the DC load.

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

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

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

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 outputs a PWM signal according to the switch closing or opening signal Lai P, so that by a current transformer according to the switching control signal P Li participating in self-excited oscillation or the exit, so that the self-oscillation frequency of the pulse width of a PWM signal than the switching between the two frequencies is changed by changing the pulse width P Korea than the operating time ratio of the two self-oscillating frequency to change the average magnitude of the current outputted to the DC load.

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 comprises sample signal average output current feedback sampling module to the control module, the control module according to the difference of the sample values ​​and the target value P Korea changes its output signal is pulse width ratio, to the DC output load the average value of the constant current 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 further includes a rectifier circuit, external communication line and neutral conductors connected by the rectifier to the inverter switching circuit, the control module signally connected to the negative terminal of the rectifier output circuit constituting the external AC live wire or zero line voltage and any difference between the voltage source via a wire connection command to switch to a signal input of the control module, the control module connected to the output switch, the command switch is closed, the control module receives the signal voltage of the voltage source and the control signal is seen as command, the switch is closed or open, the circuit operates in a self-oscillation frequency composition or one formed by the PWM duty cycle, or the circuit works as a target value of the output current, when the command switch is turned off, the voltage signal disappears control module is regarded as another command, the manual switch is open or closed so that the circuit operates in the self-oscillation frequency to another frequency, or in combination with another according to a duty ratio P Li form, or to according to a further circuit output current target value.

本发明的有益效果是: Advantageous effects of the 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 variable output frequency or output power of the self-oscillating power supply one kind of work reliably, or a gas having a dimming function of a discharge lamp self-oscillating electronic ballast, and by way of the present invention, since the self-oscillating to achieve or change the output frequency of the output power, compared with the excited oscillation circuit, to 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 be made of outputting a variable-current 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。 The present invention is further described below in conjunction with the accompanying drawings and embodiments.

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

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

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

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

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

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

图7是本发明的另一实施例示意图; FIG 7 is a schematic diagram of another embodiment of the present 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; FIG 8 is a detailed circuit diagram for an electronic ballast according to the present invention, 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 a promoter;

图10为本发明一种LED驱动电源的实例示意图。 FIG 10 a schematic view of one kind of LED driving power supply of the present example of the invention.

附图中标号说明: BRIEF DESCRIPTION reference numeral:

101—逆变开关电路; Inverter switching circuit 101;

102—多个电流互感器组成的耦合电路; 102- plurality of current transformers coupled circuit thereof;

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- electrically controlled switch;

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

206c—磁环下管驱动副边; Driving the secondary tube 206c- ring;

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

207c—磁环下管驱动副边; Driving the secondary tube 207c- ring;

208—上管驱动电阻; 209—下管驱动电阻; 说明书 208- tube driver resistor; resistors 209- lower tube drive; specification

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

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

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

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

306c—磁环下管驱动副边; Driving the secondary tube 306c- ring;

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

307c—磁环下管驱动副边; Driving the secondary tube 307c- ring;

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

310—隔直电容上; 311—隔直电容下; 310- compartments on capacitors; the capacitors 311- compartments;

401—上管; 402—下管; 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; Load matching circuit 403; 404 spacer on the capacitors; lower compartment 405 capacitors; 406a- primary ring; 406b- tube drive ring on the secondary side;

406c—磁环下管驱动副边; Driving the secondary tube 406c- ring;

407a—磁环原边; 407b- -磁环上管驱动副边; 407a- primary ring; 407b- - driving ring secondary tube;

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; Driving the secondary tube 407c- ring; 407d- control winding ring; tube driver resistor 408; 409 lower tube drive resistor; 410 control switches;

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

503—负载匹配电路; 504—控制电路; 503- load matching circuit; 504- a 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; Interlocking switch 505a- tube portion; lower pipe portion 505b- interlocking switch; 506a- primary ring; 506b- tube drive ring on the secondary side; the secondary drive tube 506c- ring;

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; 507b- tube drive ring on the secondary side; 507c- the secondary tube drive ring;

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

510—隔直电容上; 511—隔直电容下; 510- compartments on capacitors; the capacitors 511- compartments;

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

603—负载匹配电路; 604—控制电路; 603- load matching circuit; 604- a 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 Interlocking switch 605a- tube portion; lower pipe portion 605b- interlocking switch; 605c- interlocking switch primary ring portion; specification

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

606c—磁环下管驱动副边; The secondary drive tube 606c- ring;

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

607c—磁环下管驱动副边; The secondary drive tube 607c- ring;

608—上管驱动电阻; 609—下管驱动电阻; 608- tube driver resistor; resistance at 609- tube drive;

610—隔直电容上; 611—隔直电容下; 610- compartments on capacitors; 611- DC blocking capacitor lower;

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

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

705—双位开关; On-off switch 705;

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

706c—磁环下管驱动副边; Driving the secondary tube 706c- ring;

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

707c—磁环下管驱动副边; Driving the secondary tube 707c- ring;

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

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

D1—整流电路或PFC电路; D1- PFC circuit or a rectifying circuit;

R1—起振充电电阻; C1一起振电容; D2—双向触发二极管; R1- vibrating charging resistor; capacitance transducer with a C1; D2- diac;

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

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

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 tube drive ring on the secondary side of T1; T1 under Tic an oscillating magnetic secondary drive tube;

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

T2c—振荡磁环T2下管驱动副边; T2d—振荡磁环T2控制绕组; T2c- secondary oscillation tube driven lower ring T2; T2d- oscillating magnetic control winding T2;

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

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; a resonant capacitor of Cr;

C2—隔直电容上; C3—隔直电容下; The capacitors C2- compartment; compartment at the C3-blocking capacitor;

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

902—置开关于产生启动频率的位置; 902 regarding the position facing the opening produced starting frequency;

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。 Press control command 904, generating a position opposing the opening on a desired frequency.

D1001—整流电路; Z1001—稳压管; 说明书 D1001- rectifying circuit; Z1001- regulator; specification

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

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

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

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

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

TlOOlb—振荡磁环T1001上管驱动副边; TlOOlb- oscillation tube on the secondary side driving ring T1001;

TlOOlc—振荡磁环T1001下管驱动副边; TlOOlc- secondary oscillation tube driven lower ring T1001;

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

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

T1002c—振荡磁环T1002下管驱动副边; T1002c- secondary oscillation tube driven lower ring T1002;

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

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 rectifying circuits;

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

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

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。 See, 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 BRIEF 1 switch (104), and wherein the output of the inverter switching circuit (101) connected to the coupling circuit consisting of a plurality of current transformers (102) and a load circuit (103) consisting of a series circuit, the coupling circuit consisting of a plurality of current transformers ( 102) is connected to the output of the inverter switching circuit (101) as a driving inverter switching circuit (101).

其中外部控制命令可控制开关(104), 使多个电流互感器组成的耦合电路(102 )中的部分互感器参与或退出自激振荡, 来改变自激振荡频率。 Wherein the coupling circuit (102) external control command may control the switch (104), a plurality of current transformers consisting of transformers involved in part or exiting the self-oscillation frequency of self-oscillation is changed. 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 a coupling coefficient of at least two mutually independent current transformer composition.

某些负载在上电启动时对输至负载的频率或功率有特定要求, 只有符合要求的频率或功率才能保证负载正常启动, 在连接这类负载时, 附图1所示的输出频率或输出功率可变的自激振荡电源, 可以按照负载启动特性对启动频率的要求, 设置多个电流互感器组成的耦合电路(102)中某几个特定互感器参与振荡时的频率为该启动频率;然后按照附图9所述的方法, 在所述自激振荡电源上电启动时或外部命令给予启动指令时, 使开关(104)控制上述特定互说明书感器参与振荡, 从而产生该启动振荡频率。 Certain loads at power-up has specific requirements for the frequency or power output to a load, or only meet the requirements of the power frequency to ensure that the load starts normally when connected to such a load, the output frequency or the output of the drawings Figure 1 variable self-oscillating power supply can start according to the load characteristics required for starting frequency coupling circuit is provided consisting of a plurality of current transformers (102) participating in the oscillation frequency of a few particular frequency transformer for starting; the method according to the accompanying drawings and 9, when the self-oscillating power supply when the command is given to start or external start instruction, the switch (104) to control the specific cross participation description oscillation sensor, thereby generating the oscillation frequency starts . 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。 Load starts until complete, then in accordance with the requirements of the control command, set the switch (104) for generating a desired frequency location.

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。 The input of the inverter switching circuit (101) is a DC input, or the pre-PFC rectifier circuit may be from, 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。 The inverter switching circuit (101) to obtain direct input by an inverter switching circuit (101) inside or outside the vibrating line vibrating trigger pulse generating circuit, the inverter switching circuit (101) operates to convert DC input into AC coupled to the output circuit composed of a plurality of current transformers (102) and a load circuit (103) connected in series circuit configuration, wherein the coupling circuit consisting of a plurality of current transformers (102) from the alternating current of the inverter switching circuit (101) generating output coupled output connected to the 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 the coupling circuit (102) external control command switches (104), a plurality of current transformers consisting of transformers involved in part or exiting the self-excited oscillation, the output of the inverter switching circuit (101) to the load circuit (103) i.e., the current oscillating frequency changes; when a load circuit (103) is a non purely resistive, resulting in change in the current oscillation frequency power output to the load circuit (103) is changed.

附图2是本发明的一实施例示意图。 Figure 2 is a schematic view of one case of the 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。 The pipe (201), the tube (202), a linear spacer capacitor (210) and a lower compartment blocking capacitor (211) half-bridge inverter circuit composed of the upper pipe (201) and a lower tube (202) are sequentially output connection midpoint (203) and the other end is connected to the primary ring (206a), the primary ring (207a) and a load matching circuit (203), a load compartment straight matching circuit capacitor (210) and the blocking capacitor (211) the points of attachment; provided with two magnetic circuits, the primary ring (207a), the secondary drive tube (207b) and the secondary drive tube (207c) of the magnetic ring on different windings of the same ring, primary ring (206a), the secondary drive tube (206b) and the secondary drive tube (206c) of the magnetic ring on different windings of the other ring; secondary drive tube (206b) and the magnetic ring tube drive circuit (201) on the secondary drive tube composition (207b) on the ring tube drive resistor (208) connected in series; secondary drive tube (206c) lower ring, the drive ring secondary pipe (207c) and the tube driver resistor (209) in series circuit of the drive tube (202). 当外来起振脉冲开通下管(202 )后, 半桥起振。 When the tube (202) at the opening of foreign vibrating pulse, the half-bridge vibrating. 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 according to claim extraneous electrical control command control switch (205) is closed or open; when the power control switch (205) is opened, the load current flowing through the primary ring (206a) and the former ring the edge (207a), after the two respective secondary output ring groups respectively superposed respectively on the drive tube (201) and a lower tube (202), forming a fixed self-oscillation frequency; when the electrical control switch (205 ) is closed, the primary ring (207a) is short-circuited, the load current flows through only the primary ring (206a), the drive tube (207c) the output voltage of the secondary side (207b) and the lower ring tube drive the secondary ring are zero, only the secondary drive tube (206b) and the secondary drive tube (206c) respectively driving the ring pipe (201) and a lower 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。 Thus, the control circuit (204) in accordance with control commands required extraneous electrical control switch (205) closed or open, i.e. self-oscillation frequency change, or change the power output of the matching circuit via a load (203).

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

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 Figure 4 is a schematic diagram of another embodiment of the present invention, the tube (401) and a lower tube (402) composed of a half-bridge inverter, in turn connected to the output of the primary ring (406a), the primary ring (407a) and load matching circuit (403), then connected to a blocking capacitor (404) at the connection point and the DC-blocking capacitor (405); a blocking capacitor (404) and a compartment lower capacitors (405) connected in series, which both ends of the DC input connector ends; provided with two magnetic circuit, the primary ring (407a), the secondary tube driving ring (407b), the secondary tube drive ring (407C) and magnetic control winding (407d) for the different windings of the same ring, the primary ring (406a), the secondary drive tube (406b) and a lower ring tube drive the secondary ring (406c) is different from the other magnetic winding ; secondary drive tube (406b) on the ring, the drive pipe is connected to the tube (401) of the base and emitter of the secondary side (407b) and an upper tube driver resistor (408) connected in series on the magnetic ring, consisting of tube ( 401) drive circuit; secondary drive tube (406c) lower ring, secondary (407C) and the lower ring tube drive tube driver resistor (409) connected in series 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。 Pipe connected to the lower electrode (402) of the base and the emitter, the composition of the tube (402) of the 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 tube (402) at the opening of foreign vibrating pulse, the half-bridge vibrating. 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 self-excited oscillation, forming a fixed oscillation frequency; when the control switch (410) is closed, the secondary ring 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) and the output voltage of the secondary drive tube (407C) of the lower ring are Clamp on exit to zero oscillation, the self-oscillation is determined by another ring to form another fixed oscillation frequency, the output frequency is achieved 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) matched to the external load is not purely resistive, the oscillation frequency is controlled change results in changing the output power controlled, to achieve the object 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 diagram of another embodiment of the present invention, the tube (501) and a lower tube (502) consisting of half-bridge inverter circuit, in turn connected to the output of the primary ring (506a), the primary ring (507a after two connected DC blocking capacitor (510) and the blocking capacitor (511) connected in series;) and a load matching circuit (503), and then connected to the junction and the blocking capacitor (511) is a DC blocking capacitor (510) termination DC input; two magnetic circuits are provided, the primary ring (507a), the secondary tube drive 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 Different secondary winding (507c) driven tube (507b) and the same magnetic ring, the primary ring (506a), the secondary drive tube (506b) and the secondary drive tube (lower ring on the ring 506c ) for the different windings of the other ring; the ring 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 on a ring secondary drive tube (507b) on the tube by the interlocking switch portion (505A) selects one of the upper tube driver resistor (508) connected in series with the base oriented pipe (501) and an emitter; secondary side (506c) pipe or tube driven by the drive ring secondary side (507c) by the lower ring selected pipe portion (505b) at which the interlocking switch is connected to the resistance in one of the drive tube (509) connected in series pipe (502 ) base and an emitter; providing two different magnetic coupling coefficient of the different oscillation frequencies each ring formed when the individual access to the circuit description, where the secondary drive tube (506b) and a magnetic ring on the lower secondary drive tube (506c) conform to the requirements of the load to start the oscillation frequency characteristic of the access circuitry. 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 control circuit (504) of the tube always switch control linkage driving the secondary ring (506b) and the secondary drive tube (506c) at the access ring circuit, ensure that the load starting characteristics are satisfied; alien vibrating pulse of the inverter half bridge vibrating, ring tube drive circuit according to the secondary side (506b) and the secondary drive tube (506c) to start the access frequencies lower ring 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) of the tube portion may be lower interlocking switch (505A) and an interlocking switch portion (505b) to switch between the two secondary ring of external control commands as required, so that ring the secondary drive tube (506b) and the secondary drive tube (506c) access to the magnetic circuit, or the secondary drive of the tube (507b) on secondary drive ring and the pipe (507c) at the access ring circuit, so that the circuit switches between two different oscillation frequencies when the load matching circuit (503) is formed when the equivalent load is not purely resistive, resulting in a change of the output frequency of the 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 diagram of another embodiment of the present invention, the working principle of the embodiment shown in Figure 5 is substantially similar, except that the former two magnetic interlocking edges can be selected by switching the primary ring portion (605c) connected the circuit; providing two different magnetic coupling coefficient of the different oscillation frequencies each ring formed when separate access circuitry. 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 an external control command request control linkage between the two magnetic switch, the circuit will switch between the two different oscillation frequencies, to achieve the object 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 diagram of another embodiment of the present invention, the working principle of the embodiment shown in Figure 5 is substantially similar, except that the raw edges of two magnetic on-off switch (705) selects the access circuit, and into two sub-series magnetic sides; providing two different magnetic coupling coefficient of the different oscillation frequencies each ring formed when separate access circuitry. 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 external control commands required to control on-off switch (705) to switch between the two magnetic rings, the ring not connected to the primary side of the secondary output voltage is zero, the oscillation frequency by the access the magnetic circuit determined; therefore, the switching between the two magnetic rings, even if the circuit is switched between two different 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 Figure 8 is a detailed circuit diagram, the rectifier circuit PFC D1 or the output circuit of the embodiment of the present invention is an electronic ballast for a half bridge inverter connected to the half-bridge transistors Q1 and Q2 form a half bridge tube; vibrating charging inverse half bridge transistors Q1 and Q2 form a half bridge tube; a resistor Rl, a capacitor C1 and vibrating two-way trigger diode D2 vibrating line, the diode D3 from the circuit after the start-up vibration Clamp on capacitor C1 at a low level variable oscillating half-bridge output is connected sequentially T1 primary ring Tla, T2 primary oscillating magnetic T2a, the resonant inductor Lr, the fluorescent lamp filament TL, resonant capacitor Cr, the other side by fluorescent lamps TL filament to the DC blocking capacitor C2 and C3 are connected at the midpoint of the DC blocking capacitor; magnetic circuit is provided with two oscillating magnetic Tla primary T1, T1 tube drive ring oscillation and the oscillating magnetic secondary Tib tube T1 is driven secondary Tic different windings of the same ring, the ring oscillation T2 primary T2a, T2b secondary tube drive ring oscillation T2, the drive tube and the oscillating magnetic secondary T2c shaking control winding T2 T2 ring to another ring in T2d different windings; Tlb secondary tube drive ring oscillation T1, T2 ring oscillation tube 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。 After SHEET T2b secondary drive tube drive and half bridge resistor R2 is connected in series with the base and emitter of the half-bridge transistor Q1; T1 oscillating magnetic driving the secondary tube Tlc, the oscillating magnetic secondary drive tube T2 T2c and half bridge driver tube after the half bridge in series with the resistor R3 tube base and the emitter of Q2 is connected; C3 in series after the DC blocking capacitor C2 and the blocking capacitor terminals connected with the rectifier output circuit D1 of the PFC circuit; auxiliary DC power supply voltage VDC, auxiliary resistor R4, the control switch in series with the oscillating magnetic SI across the control winding T2 is connected T2d; counter voltage auxiliary DC voltage source VDC via the auxiliary resistor R4 is sufficient to cause oscillation magnetic saturation T2 value, or an auxiliary voltage value is set to zero DC voltage source VDC and auxiliary resistor R4 is set to an appropriate value, the auxiliary magnetic resistor R4 and the oscillation control winding T2d T2 is turned on, driving the oscillating tube T2 secondary ring T2b and an oscillating magnetic secondary drive tube T2 T2c Clamp on the output is zero.

初始状态时, 置控制开关S 1开路。 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 AC input to the rectifier circuit or a PFC circuit D1 appropriate voltage rectifying circuit or the PFC circuit D1 AC input into a DC output charging to the start-up capacitor C1 through vibrating charging resistor R1, the voltage on transducer capacitor C1 from gradually lift high breakdown until diac D2, through capacitor C1 vibrating diac D2 and resistor R3 half bridge electrode discharge tube drive to transistor Q2 base half-bridge, half-bridge transistor Q2 is turned on, the start-up circuit; factor control switch S1 is open, the two magnetic rings are involved oscillates at a fixed frequency oscillating circuit, a half bridge transistors Q1 and Q2 form a half bridge pipe half-bridge inverter output current flowing through the resonant inductor Lr, resonant capacitor Cr, and fluorescent lamps TL filament, a high voltage is generated across the resonance capacitor Cr eventually breakdown fluorescent TL, TL fluorescent lighting. 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 the required dimming means controls the switch S1 is closed, when the auxiliary voltage value of the DC power supply voltage VDC, is set to a sufficiently high value, the resistor R4 and the oscillation through the secondary winding current magnetic T2 T2d that the magnetic saturation control exit oscillation, the oscillation frequency by changing the frequency of self-oscillation of the other ring decisions; set when the control switch S 1 is closed, if the auxiliary voltage value of the DC power supply voltage VDC is set to zero and the auxiliary resistor R4 is set to an appropriate value, driving the oscillating magnetic tube T2 T2b and the secondary oscillating magnetic secondary drive tube T2 T2c is output Clamp on exit to zero oscillation, the oscillation frequency is changed by the self-resonant frequency determined by another ring; for TL fluorescent lamp has a breakdown, a portion of the half-bridge inverter output current flows through the resonant inductor Lr TL fluorescent, self-oscillating frequency results in changing the current flowing through the resonant inductor Lr and fluorescent lamps TL is changed, the output power to the fluorescent lamps TL changed, to achieve dimming effect.

附图9是本发明一种启动方法的示意图。 Figure 9 is a schematic view of the method of the present invention is a promoter. 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 load is a frequency segment according to the present invention a variable self-oscillating power supply is connected has specific requirements for the start frequency, the power load in accordance with the present invention may be required to start frequency, a plurality of current transformers coupled consisting of circuitry (102) in a few particular frequency when the oscillation transformer for participation starting frequency. 然后本发明的电源可按照附图9所述的方法逐步完成启动: 在步骤(901 )上电启动或收到启动指令时, 即进入步骤(902 )置开关于产生启动频率的位置, 使开关控制上述特定互感器参与振荡, 从而产生该启动频率。 Then the power supply method according to the present invention may be gradually complete figures 9 Start: start or power-start command is received in step (901), i.e., go to step (902) opposite the open position is generated on the start frequency, the switch involved in the specific oscillation control transformer, thereby generating 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 step (903) determines whether the startup is completed, if not completed, the switch position remains unchanged; if the startup is completed, the process proceeds to step (904) by a control command, generated on a position opposite the opening a 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。 This method can be manual control specification is completed, the control circuit may also be provided in the power supply of the present invention has been 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。 The plurality of the above-described example, may be provided with a control module and a sampling circuit, sampling circuit by sampling a current collecting load circuit, a feedback to the control module, the control module controls the PWM duty cycle, thereby achieving a constant average output current 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 not to limit the invention, merely illustrative purposes. 应用例一 Application Example a

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 above-described power supply may be directly applied to the gas discharge lamp electronic ballast. 电子镇流器(Electricalbal last ), 是指采用电子技术驱动电光源, 使之产生所需照明的电子设备。 Electronic ballast (Electricalbal last), it refers to the use of electronic technology driving the light source, thus producing the desired illumination electronic device. 与之对应的是电感式镇流器(或镇流器)。 Corresponding thereto is an inductive ballast (or ballast). 现代日光灯越来越多的使用电子镇流器, 轻便小巧, 甚至可以将电子镇流器与灯管等集成在一起, 同时, 电子镇流器通常可以兼具起辉器功能, 故此又可省去单独的起辉器。 Modern fluorescent increasing use of electronic ballasts, compact and lightweight and can even be integrated electronic ballast and lamp, etc. together, at the same time, the electronic ballast can usually be both starter function, therefore turn provinces 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 additional features, such as power inverter by fluorescent processes may be used such that the 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。 Examples of the power source of the electronic ballast is applied, 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。 Such applications are merely 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 one application is implemented.

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, The plurality of power supply above example can be applied directly to the output current of the variable, such as an LED drive power, the drive power of course may be 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。 A current variable power output, the power switching inverter circuit is provided with a control module, a switch, a plurality of current transformers, resonant inductor, resonant capacitor, an output rectifier circuit and a DC load, a resonant inductor and resonant capacitor form a serial the resonance circuit, and resonant capacitor to the output rectifier circuit, the output of the rectifier circuit and a DC load connected to the control module in accordance with an external command so that the switch is closed or opened, at least one current transformer involved in self-excited oscillation or exit to alter the self-oscillating frequency, changing the output magnitude of the current to 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, the magnetic core is wound with a coil primary winding, the transformer are connected in series with the resonant inductor in series, each transformer has two secondary windings, driving the inverse series, respectively varying the switching circuit, a power switch, wherein a current transformer with a secondary winding or control winding, the switch winding and a succession of a current transformer, the switch control module is opened or closed, so that the current transformer or participation exiting the self-oscillation circuit for controlling the oscillation frequency.

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 outputs the switching signal P Medical PWM signal by closing or opening the switch control by a current transformer according to the PWM signal involved in self-excited oscillation or exit, so that the self-oscillation frequency of the pulse width of the PWM signal according to the ratio of switching between the two frequencies, to change the date in the ratio of two self-oscillation frequency to change the average magnitude of the output current to a DC load specification by changing the pulse width P Li 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 includes a current average value of the sampled signal output is fed back to the control module sampling module, a control module according to the difference of the sample values ​​and the target changes its output signal pulse width ratio Li P, so that the average output current to a DC load value is constant 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 further includes a rectifier circuit, external communication line and neutral conductors connected to the inverter switching circuit is rectified, the control module signally connected to the negative terminal of the rectifier output circuit constituting the external AC line and has a live wire or zero voltage difference any voltage source through 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 signal voltage of the voltage source and the signal is regarded as a control command , the switch is closed or open, the circuit operates in a self-oscillation frequency composition or one formed by P Li duty cycle, or the circuit works as a target value of the output current, when the command switch is turned off, the voltage signal disappears control module is regarded as another command, the switch is open or closed, the circuit operates in the self-oscillation frequency to another frequency, or in combination with another according to a duty ratio P Korea formed, or the circuit according to a further output current target value work.

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 detailed circuit diagram of another embodiment of the present invention, this embodiment utilizes the present invention realizes an adjustable drive of the LED light. 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 rectifying circuit connected to the output of the inverter half bridge half-bridge and half-bridge canal tube Q1001 Q1002 thereof; vibrating charging resistor R1001, capacitor C1001, and vibrating diac D1002, D1003 composition vibrating diode line; half bridge Q1001 tube half bridge and the half-bridge inverter composed of sequentially connecting pipe Q1002 oscillating magnetic T1001 primary T1001a, T1002 primary oscillating magnetic T1002a, resonant inductor Lrl001, resonant capacitor C1004; C1004 resonant capacitor the other end of the half-bridge capacitor connecting the lower half-bridge capacitor C1002 and C1003 midpoint; across the resonant capacitor C1004 and D1004 to the output rectifier circuit, the output of the rectifier circuit D1004 group semiconductor light emitting device and connected LEDs; D1004 output rectifying circuits may further comprise at least one light emitting diode; to an output of the circuit configuration of a current value of the semiconductor light emitting device is less affected by the group of 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 Magnetic circuit is provided with two oscillating magnetic T1001 primary T1001a, secondary tube drive tube drive and the oscillating magnetic T1001 TlOOlb TlOOlc different secondary windings on the same magnetic ring oscillation T1001, T1002 oscillating magnetic primary T1002a, tube oscillations driving ring T1002 secondary T1002b, shaking tube drive ring T1002 T1002c different secondary windings of another ring; T1001b secondary tube drive ring oscillation T1001, T1002 oscillating magnetic ring T1002b secondary drive tube and rear tube half bridge driver series resistor R1002 is connected to the base and the emitter of the half bridge tube Q1001; T1001c secondary drive tube shaking ring T1001, T1002 tube drive ring shaking secondary T1002c and the half bridge in series after the tube driver resistor R1003 is connected to the base and the emitter of the half bridge tube Q1002; half-bridge capacitor C1002 and lower half-bridge capacitor connected across the output rectifier circuit of the C1003 series D1001; an auxiliary DC voltage source DC1001 ASIC power supply to the control module, control module ASIC output terminal connected to a control specification of electronically controlled switch S1002, S1002 ends electronically controlled switch connected to the switch drive tube shaking ring T1002 secondary T1002c; starting circuit 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。 After the control module control ASIC electronically controlled switch S1002 closed or opened, even if the oscillating magnetic T1002 leave or join the self-oscillation, the output circuit leading to two different frequencies; as a resonant inductor Lrl001, resonant capacitor C1004, D1004 output rectifying circuits, semiconductor different output frequencies from the light emitting device group formed LEDs- inductive load, the inverter circuit causes the load current changes, resulting in magnitude of the current flowing through the semiconductor light emitting device groups of LEDs varies, 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 outputs a PWM pulse width modulated signal ASIC, electronically controlled switch duty of the PWM signal S1002 by closing or opening, so that the self-oscillation circuit according to P Li duty is switched between two operating frequencies, whereby resulting in the output load current magnitude is switched in the conventional current PWM duty; Lai signal duty cycle to change the size P, i.e., the proportion of two kinds of change in the load current amplitude, thereby changing the output magnitude of the average current, This enables a continuous change of the average output current segment with frequency modulation manner; if access to a current sampling circuit of the semiconductor light emitting device group LEDs current path, the sampled signal back to the control module an ASIC, and a comparison result in accordance with the feedback signal and the target value to change the PWM duty cycle, i.e. the average current to the control output of the semiconductor light emitting device group in the vicinity of the LEDs constant 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 signal D1001 to the rectifier circuit output module connected to the negative terminal of the ASIC, the ASIC module between the control signal input and the signal ground and connected regulator Z1001, Z1001 functions as the regulator voltage and the rectified signal Clamp on two functions, a control signal input terminal connected to the ASIC module after a command to switch the resistor R1004 S1001, S1001 command switch is connected to the other end of the VCMD power command, or Firewire connection D1001 input rectifier circuit, or connected to the zero line, power command VCMD any line-to-line or zero differential pressure to form a loop and a voltage source. 当命令开关S1001闭合时,控制模块ASIC接收到输入的电压信号, 将该电压信号作为控制命令, 控制模块ASIC按事先定义控制电控开关S1002闭合或断开, 或输出某一占空比的PWM信号, 使电路输出频率为某一自激振荡频率或为两种自激振荡频率的某一占空比的组合; 当命令开关S1001断开时, 输入电压信号消除, 控制模块ASIC信号接收端不再接收到电压信号, 控制模块ASIC将该电压信号的消失视作另一命令, 控制模块ASIC改变其输出从而改变电控开关S1002的开关状态, 或输出另一占空比的P丽信号, 使电路输出频率为另一自激振荡频率或为两种自激振荡频率的另一占空比的组合, 达到发明目的。 When the command switch is closed S1001, the control module ASIC receives the input voltage signal, the voltage signal as a control command, the control module according to predefined control ASIC electronically controlled switch S1002 closing or opening, or a PWM duty cycle output signal, the output frequency of the circuit is a self-resonant frequency or for a combination of two kinds of self-oscillation frequency of the duty ratio; S1001 when the switch is OFF command, the input voltage signal canceller, the control module ASIC signal receiver does not longer receive a voltage signal, the voltage control signal disappears ASIC module is regarded as another command, the control module ASIC change its output signal to vary electronically controlled switch Lai P switch state S1002, or another output duty cycle, so that a further circuit output frequency of self-oscillation frequency, or a combination of two self-resonant frequency of the duty cycle of the other, to achieve the object 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 will be appreciated that the methods described herein may be implemented in various forms of hardware, software, firmware, special purpose processors, or a combination thereof to achieve. 系统模块(或者方法步骤的逻辑流程)之间的连接可能不同, 根据这里给出的指导, 相关领域的普通技术人员将能够设计出本发明的这些以及类似的实施方式, 都应落入本发明的范围内。 Connections between system modules (or the logic flow of method steps) may differ, according to the guidance presented herein, one of ordinary skill in the relevant art will be able to devise these and similar embodiments of the present invention, the present invention should fall within 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。 A plurality of the above disclosed aspects and embodiments of the 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。 The present invention in various aspects and embodiments disclosed only for illustrative embodiment, the description is not limiting of the present invention, the true scope and spirit of the invention as claimed in the claims should prevail.

Claims

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 segment of the variable frequency output of the self-oscillating inverter, wherein the inverter power supply switching circuit is provided with a coupling circuit consisting of a plurality of current transformers, and a load switching circuit configured from part of the current transformer coupled circuit oscillating inverter circuit, controlled by a switch consisting of a plurality of current transformers involved in or out to change the self-oscillation frequency of self-oscillation.
、 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 output of the variable frequency segment self-oscillating inverter of the preceding claims, characterized in that the coupling circuit consisting of a plurality of current transformers coupling coefficient comprises at least two mutually independent 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 output of the variable frequency segment self-oscillating inverter of the preceding claims, characterized in that the circuit provided in the plurality of current transformers, the magnetic core is wound with a coil, the transformer 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, wherein one secondary winding of a transformer a transformer another after the secondary winding in series, by the base and the emitter resistor of the inverter power switch drive circuit of the switch is connected, the other two secondary windings connected in series via the power switch tube base drive resistors and the inverter circuit switching pole and the emitter is connected, by means of a switch, controlling at least one current transformer participate or exiting the self-oscillation circuit for controlling the oscillation frequency.
、 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。 , Self-oscillating power inverter according to claim 3, the output frequency of the variable segment, wherein said switch and connected to a current transformer the primary winding of the 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。 , Self-oscillating power inverter according to claim 3, the output frequency of the variable segments, wherein, then around a secondary control winding in either a current transformer, the secondary winding is controlled by one switch and access.
、 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。 , The self-oscillating inverter frequency output as claimed in claim 5, wherein the variable segment, wherein said secondary control winding connected in series 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。 , Self-oscillating power inverter according to claim 1, the output frequency of the variable segment, wherein said circuit provided in the plurality of current transformers, the magnetic core is wound with a coil, mutual inductance the primary winding is connected in series with each other, are connected to 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 of the secondary winding of the current transformer the inverter switching circuit, respectively, at a power base of the switching transistor is connected in series.
、 按权利要求1所述的输出频率分段可变的自激振荡逆变电源, 其特征在于, 所述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。 , Self-oscillating power inverter according to claim 1, the output frequency of the variable segment, wherein said circuit provided in the plurality of current transformers, the magnetic core is wound with a coil, mutual inductance the primary winding is connected in parallel with each other, controlled by a switch to select one of the power switch and the transformer primary and the load circuit of the inverter switching circuit; each transformer has two secondary windings, respectively, after the inverse series, respectively varying the switching circuit, the base electrode of a power switch connected in series or parallel, respectively, controlled by the selection switch connected to the secondary side claimed in one or more current transformers for the book and the winding switching circuit of the inverter, a power switch tube 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, 所述开关是机械开关或电子开关。 , According to the output frequency of the variable segments of a self-oscillating power inverter as claimed in claim wherein said switch is a mechanical or 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, the output frequency segment according to Claim variable self-oscillating inverter of claim 1, wherein the self-oscillating inverter circuit when the foreign power-up or start command is received, controlled by the control instruction determining the position of a switch, to reach a determined 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, the output frequency of the variable segments of the self-oscillating inverter, characterized by further comprising a control module and a sampling circuit, sampling circuit by sampling a current collecting load circuit, a feedback to the control module, P Li control module controls the duty ratio of the duty cycle of the switch is opened or closed according to the average value of the constant current 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 according to claim 1, characterized in that, further comprising a negative terminal of the rectifier circuit, external communication line and neutral conductors connected to the inverter switching circuit is rectified, the control module signally connected to the output of the rectifier, with the Firewire or external AC neutral circuit configuration and any difference between the voltage source via a wire connection command to switch to a 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, the switch is closed or open, the circuit operates in a self-oscillation frequency composition or one formed by the PWM duty cycle, or the circuit works as a target value of the output current, when the command when the switch is turned off, the voltage control module to disappear is regarded as another command signal, the frequency of the switch is open or closed, that the circuit formed on the other by the self-resonant frequency or a duty ratio Li another P combination, or to another output circuit according to the current target value.
3、 一种气体放电灯电子镇流器,其特征在于,包括如权项1至权项12所述的任意一种自激振荡逆变电源。 3. A gas discharge lamp electronic ballast, characterized as comprising any of the Claim 12 to Claim 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, an output rectifier circuit and a DC load, resonant inductor and a series resonant circuit composed of a resonant capacitor, a resonant capacitor and a rectifier circuit connected to the output, the output of the rectifier circuit and a DC load connected, the switch control module is closed or opened in accordance with an external command, at least one current transformer involved in self-excited oscillation or exit, to change the self-oscillating frequency to change the size of the output current to a 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 as claimed in 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 of claim 14, wherein said plurality of current transformers, is wound on the core after the coil, the transformer primary winding in series with the resonant inductor connected in series with each other, each of a transformer having two secondary windings, driving the inverter switching circuit in series, the power switch, wherein a current transformer with a wound or the claims to control secondary winding, a switch current transformer and took a winding, the switch control module is opened or closed, so that the current transformer or exit the self-oscillating participating to the oscillation frequency control 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。 , The power supply according to any one of claims 14 to 17, characterized in that the control module outputs a PWM signal by the PWM signal closes the switching on or off the current transformer by the switching control by PWM signal or exit from participation oscillating the self-resonant frequency of the PWM signal by a pulse width ratio between two switching frequencies, to change the date in the two self-resonant frequency by changing the ratio of the PWM pulse width ratio is changed to a DC load current output the average value of 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。 Power supply according to claim 18, characterized in that, further comprising a sampling signal average output current feedback sampling module to the control module, the control module according to the difference of the sample values ​​and the target value changing the pulse width of the PWM signal output than the average value of current to the DC output load 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 18 or 19 or the output current of the variable power supply as claimed in claim 14, wherein the signal further comprises a rectifying circuit, external communication line and neutral conductors connected to the inverter switching circuit by the rectifier, is connected to the control module to the negative terminal of the rectified output, constituting the external AC live wire or neutral circuit and any difference between the voltage source via a wire connection command to switch to a signal input of the control module, the command switch is closed, the control module receives voltage signal to the voltage source and the control command considered, the switch is closed or open, the circuit operates in a self-oscillation frequency composition or one formed by the P Li duty cycle signal, or the circuit a current target value according to the output operation, when the command switch is turned off, the voltage control module to disappear is regarded as another command signal, said switch opening or closing the circuit to the other self-resonant frequency or other press the duty ratio of the frequency of a combination of P Korea formed by another circuit or to the output current target value.
PCT/CN2012/078653 2011-07-18 2012-07-13 Self-oscillating inverter power supply having variable output frequency slicing and power supply having variable output current WO2013010459A1 (en)

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