一种快速动态响应低电压纹波功率因数校正变换器的控制策略
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摘要
功率因数校正(PFC)变换器的输出侧并联有源储能单元,可有效抑制PFC变换器输出侧的二次纹波。以采用Buck型有源储能单元的三相交错并联Boost PFC变换器为研究对象,对其控制策略进行研究。首先,为弥补传统Boost PFC双闭环控制中电流参考畸变与电压外环动态响应差的不足,提出基于生成正弦基准的Boost PFC双前馈控制策略,改善了负载和输入电压瞬变条件下输出电压的稳定性,并加快了切相速度。进而,提出一种有源储能单元的自适应控制策略,该方法在满足电压纹波要求的前提下,考虑负载、输入电压频率与PFC输出电容对有源储能单元电流参考的影响,以达到有源储能单元控制简化和效率优化的目的。最后,基于一台1.3kW原理样机的实验结果验证了所提控制策略的有效性。
The ouput of power factor correction(PFC) converter with active storage unit(ASU)is an excellent method to reduce the output voltage ripple. The control strategy of three-phase Boost PFC converter with Buck-type ASU is studied in this paper. Firstly, this paper proposes a dual feedforward control strategy with generated sinusoidal reference for Boost PFC to make up for the shortcomings of the current reference distortion and the poor dynamic response in the traditional double closed-loop control of Boot PFC. As a result, the output stability is improved and the phase-shedding speed is accelerated under input or output transient. Additionally, an adaptive control of ASU is proposed, in which the current reference changes adaptively according to load, line frequency and output capacitor. The aims of simpilified control and efficiency optimization are achieved in ASU.Finally, the proposed control strategy is verified by experimental results of an 1.3 kW prototype.
The ouput of power factor correction(PFC) converter with active storage unit(ASU)is an excellent method to reduce the output voltage ripple. The control strategy of three-phase Boost PFC converter with Buck-type ASU is studied in this paper. Firstly, this paper proposes a dual feedforward control strategy with generated sinusoidal reference for Boost PFC to make up for the shortcomings of the current reference distortion and the poor dynamic response in the traditional double closed-loop control of Boot PFC. As a result, the output stability is improved and the phase-shedding speed is accelerated under input or output transient. Additionally, an adaptive control of ASU is proposed, in which the current reference changes adaptively according to load, line frequency and output capacitor. The aims of simpilified control and efficiency optimization are achieved in ASU.Finally, the proposed control strategy is verified by experimental results of an 1.3 kW prototype.
引文
[1]徐恒山,尹忠东,赵雨山,等.基于三参数优化设计高效率交错Boost变流器的方法[J].电工技术学报,2018,33(6):1328-1337.Xu Hengshan,Yin Zhongdong,Zhao Yushan,et al.The optimal design method of high efficiency interleaved Boost converter based on three parameters[J].Transactions of China Electrotechnical Society,2018,33(6):1328-1337.
[2]Fei C,Lee F C,Li Q.High-efficiency highpower-density LLC converter with an integrated planar matrix transformer for high output current applications[J].IEEE Transactions on Industrial Electronics,2017,64(11):9072-9082.
[3]徐恒山,尹忠东,黄永章.考虑最大输出电压和效率的LLC谐振变流器的设计方法[J].电工技术学报,2018,33(2):331-341.Xu Hengshan,Yin Zhongdong,Huang Yongzhang.Design method of LLC resonant converter considering maximum output voltage and efficiency[J].Transactions of China Electrotechnical Society,2018,33(2):331-341.
[4]章勇高,史献冰,高海文.一种具有功率耦合电路的无电解电容LED驱动电源[J].电力系统保护与控制,2017,45(17):58-64.Zhang Yonggao,Shi Xianbing,Gao Haiwen.Anon-electrolytic capacitors LED driver power supply with power coupling circuit[J].Power System Protection and Control,2017,45(17):58-64.
[5]殷晓东,罗登,李祖勇,等.一种双向隔离DC-DC变换器二次纹波电压抑制方法[J].电工技术学报,2018,33(6):1356-1363.Yin Xiaodong,Luo Deng,Li Zuyong,et al.Asecond-order ripple voltage suppression algorithm of bidirectional isolation DC-DC converter[J].Transactions of China Electrotechnical Society,2018,33(6):1356-1363.
[6]陈正格,许建平,杨平,等.变占空比控制二次型Boost功率因数校正变换器[J].电工技术学报,2016,31(16):72-82.Chen Zhengge,Xu Jianping,Yang Ping,et al.Variable duty cycle control quadratic Boost power factor correction converter[J].Transactions of China Electrotechnical Society,2016,31(16):72-82.
[7]陈裕成.双Boost PFC变换器输出电压纹波的研究[J].电气技术,2015,16(6):48-51.Chen Yucheng.Research on output voltage ripple of doubler Boost PFC[J].Electrical Engineering,2015,16(6):48-51.
[8]李培强,董彦婷,段克会,等.直流微电网双向AC/DC变换器并联系统控制策略仿真研究[J].电力系统保护与控制,2017,45(17):43-50.Li Peiqiang,Dong Yanting,Duan Kehui,et al.Simulation study for control strategy of bi-directional AC/DC converter parallel system in DC microgrid[J].Power System Protection and Control,2017,45(17):43-50.
[9]Vasiladiotis M,Rufer A.Dynamic analysis and state feedback voltage control of single-phase active rectifiers with DC-Link resonant filters[J].IEEETransactions on Power Electronics,2014,29(10):5620-5633.
[10]Wang B,Ruan X,Yao K,et al.A method of reducing the peak-to-average ratio of LED current for electrolytic capacitor-less AC-DC drivers[J].IEEETransactions on Power Electronics,2010,25(3):592-601.
[11]Zhang F,Ni J,Yu Y.High power factor AC-DC LEDdriver with film capacitors[J].IEEE Transactions on Power Electronics,2013,28(10):4831-4840.
[12]Wang R,Wang F,Boroyevich D,et al.A high power density single-phase PWM rectifier with active ripple energy storage[J].IEEE Transactions on Power Electronics,2011,26(5):1430-1443.
[13]Zhang L,Ruan X,Ren X.One-cycle control for electrolytic capacitor-less second harmonic current compensator[J].IEEE Transactions on Power Electronics,2013,33(2):1724-1739.
[14]Leung K H,Loo K H,Lai Y M.A family of ripple estimation-cancellation methods based on switchedresistor circuits and their application in fast-response PFC preregulator[J].IEEE Transactions on Power Electronics,2017,32(4):2608-2621.
[15]Prodic A,Chen J,Erickson R W,et al.Digitally controlled low-harmonic rectifier having fast dynamic responses[C]//Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition,Dallas,2002:476-482.
[16]Ghosh R,Narayanan G.Generalized feedforward control of single-phase PWM rectifiers using disturbance observers[J].IEEE Transactions on Industrial Electronics,2007,54(2):984-993.
[17]Sun Y,Liu Y,Su M,et al.Review of active power decoupling topologies in single-phase systems[J].IEEE Transactions on Power Electronics,2016,31(7):4778-4794.
[18]Yang Y,Ruan X,Zhang L,et al.Feed-forward scheme for an electrolytic capacitor-less AC/DC LEDdriver to reduce output current ripple[J].IEEETransactions on Power Electronics,2014,29(10):5508-5517.
[2]Fei C,Lee F C,Li Q.High-efficiency highpower-density LLC converter with an integrated planar matrix transformer for high output current applications[J].IEEE Transactions on Industrial Electronics,2017,64(11):9072-9082.
[3]徐恒山,尹忠东,黄永章.考虑最大输出电压和效率的LLC谐振变流器的设计方法[J].电工技术学报,2018,33(2):331-341.Xu Hengshan,Yin Zhongdong,Huang Yongzhang.Design method of LLC resonant converter considering maximum output voltage and efficiency[J].Transactions of China Electrotechnical Society,2018,33(2):331-341.
[4]章勇高,史献冰,高海文.一种具有功率耦合电路的无电解电容LED驱动电源[J].电力系统保护与控制,2017,45(17):58-64.Zhang Yonggao,Shi Xianbing,Gao Haiwen.Anon-electrolytic capacitors LED driver power supply with power coupling circuit[J].Power System Protection and Control,2017,45(17):58-64.
[5]殷晓东,罗登,李祖勇,等.一种双向隔离DC-DC变换器二次纹波电压抑制方法[J].电工技术学报,2018,33(6):1356-1363.Yin Xiaodong,Luo Deng,Li Zuyong,et al.Asecond-order ripple voltage suppression algorithm of bidirectional isolation DC-DC converter[J].Transactions of China Electrotechnical Society,2018,33(6):1356-1363.
[6]陈正格,许建平,杨平,等.变占空比控制二次型Boost功率因数校正变换器[J].电工技术学报,2016,31(16):72-82.Chen Zhengge,Xu Jianping,Yang Ping,et al.Variable duty cycle control quadratic Boost power factor correction converter[J].Transactions of China Electrotechnical Society,2016,31(16):72-82.
[7]陈裕成.双Boost PFC变换器输出电压纹波的研究[J].电气技术,2015,16(6):48-51.Chen Yucheng.Research on output voltage ripple of doubler Boost PFC[J].Electrical Engineering,2015,16(6):48-51.
[8]李培强,董彦婷,段克会,等.直流微电网双向AC/DC变换器并联系统控制策略仿真研究[J].电力系统保护与控制,2017,45(17):43-50.Li Peiqiang,Dong Yanting,Duan Kehui,et al.Simulation study for control strategy of bi-directional AC/DC converter parallel system in DC microgrid[J].Power System Protection and Control,2017,45(17):43-50.
[9]Vasiladiotis M,Rufer A.Dynamic analysis and state feedback voltage control of single-phase active rectifiers with DC-Link resonant filters[J].IEEETransactions on Power Electronics,2014,29(10):5620-5633.
[10]Wang B,Ruan X,Yao K,et al.A method of reducing the peak-to-average ratio of LED current for electrolytic capacitor-less AC-DC drivers[J].IEEETransactions on Power Electronics,2010,25(3):592-601.
[11]Zhang F,Ni J,Yu Y.High power factor AC-DC LEDdriver with film capacitors[J].IEEE Transactions on Power Electronics,2013,28(10):4831-4840.
[12]Wang R,Wang F,Boroyevich D,et al.A high power density single-phase PWM rectifier with active ripple energy storage[J].IEEE Transactions on Power Electronics,2011,26(5):1430-1443.
[13]Zhang L,Ruan X,Ren X.One-cycle control for electrolytic capacitor-less second harmonic current compensator[J].IEEE Transactions on Power Electronics,2013,33(2):1724-1739.
[14]Leung K H,Loo K H,Lai Y M.A family of ripple estimation-cancellation methods based on switchedresistor circuits and their application in fast-response PFC preregulator[J].IEEE Transactions on Power Electronics,2017,32(4):2608-2621.
[15]Prodic A,Chen J,Erickson R W,et al.Digitally controlled low-harmonic rectifier having fast dynamic responses[C]//Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition,Dallas,2002:476-482.
[16]Ghosh R,Narayanan G.Generalized feedforward control of single-phase PWM rectifiers using disturbance observers[J].IEEE Transactions on Industrial Electronics,2007,54(2):984-993.
[17]Sun Y,Liu Y,Su M,et al.Review of active power decoupling topologies in single-phase systems[J].IEEE Transactions on Power Electronics,2016,31(7):4778-4794.
[18]Yang Y,Ruan X,Zhang L,et al.Feed-forward scheme for an electrolytic capacitor-less AC/DC LEDdriver to reduce output current ripple[J].IEEETransactions on Power Electronics,2014,29(10):5508-5517.