基于谐波误差补偿的单周控制有源电力滤波器
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摘要
单相全桥电路拓扑是单相并联型有源电力滤波器的一种常用拓扑。采用传统的双极性调制单周控制的全桥电路可以将电网电流的总谐波畸变率从85.25%减少到11.94%。由于非线性负载峰值充电电流变化率很高,而有源电力滤波器的补偿电流无法及时变化,导致了电网电流仍含有一定的谐波分量。本文采用谐波误差补偿方法来进一步减少电网电流的总谐波畸变率。分析了补偿原理并提出了实现方法。仿真结果验证了该方案能够提高补偿的静态性能与动态性能。
Single-phase full-bridge circuit topology is a common topology for single-phase shunt active power filter(APF in short). The total harmonic distortion of grid current can be reduced from 85.25% to11.94% by the use of full-bridge circuit controlled by traditional bipolar modulation one cycle control. A definite harmonic component is included in the grid current due to very high variation of non-linear load peak charging current and slow variation of compensation current of active power filter. In this paper,the total harmonic distortion rate of grid current is reduced further by way of harmonic error compensation. The compensation principle is analyzed and achievement method is proposed. It is proved by the simulation result that the solution can improve both static and dynamic performance of the compensation.
Single-phase full-bridge circuit topology is a common topology for single-phase shunt active power filter(APF in short). The total harmonic distortion of grid current can be reduced from 85.25% to11.94% by the use of full-bridge circuit controlled by traditional bipolar modulation one cycle control. A definite harmonic component is included in the grid current due to very high variation of non-linear load peak charging current and slow variation of compensation current of active power filter. In this paper,the total harmonic distortion rate of grid current is reduced further by way of harmonic error compensation. The compensation principle is analyzed and achievement method is proposed. It is proved by the simulation result that the solution can improve both static and dynamic performance of the compensation.
引文
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[11]费万民,吕征宇,钱挺.基于互补策略的新型单周控制有源滤波器[J].电力系统自动化,2003,27(3):50-53.FEI Wanmin,LYU Zhengyu,QIAN Ting.A novel one-cycle control active power filter based on complementary control strateigies[J].Automation of Electric Power Systems,2003,27(3):50-53.
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[13]QIAO Chongming,SMEDLEY K M,MADDALENO F.A single-phase active power filter with one-cycle control under unipolar operation[J].IEEE Transactions on Circuit and Systems,2004,51(8):1623-1629.
[14]徐明,周林,王伟,等.单相有源电力滤波器的单周控制策略综述[J].电网技术,2006,30(22):81-86.XU Ming,ZHOU Lin,WANG Wei,et al.A survey on one-cycle control strategy for single-phase active power filter[J].Power System Technology,2006,30(22):81-86.
[15]刘清蝉.基于单周控制原理的有源电力滤波器研究[D].北京:华北电力大学,2012.
[2]霍磊,刘鹏.四桥臂有源滤波器无差拍控制策略研究[J].电力电容器与无功补偿,2014,35(6):24-28.HUO Lei,LIU Peng.Study on deadbeat control strategy of four-leg active power filter[J].Power Capacitor&Reactive Power Compensation,2014,35(6):24-28.
[3]邱晓初,肖建,刘小建.一种APF模糊自适应可变环宽滞环控制器[J].电力系统保护与控制,2012,40(7):73-77.QIU Xiaochu,XIAO Jian,LIU Xiaojian.A novel fuzzy adaptive hysteresis band current controller for active power filter[J].Power System Protection and Control,2012,40(7):73-77.
[4]刘飞,莫青,祝亚峰.三相有源电力滤波器输出波形控制方法仿真研究[J].电力电容器与无功补偿,2015,36(1):30-34.LIU Fei,MO Qing,ZHU Yafeng.Simulation study on control method of output waveform of three-phase APF[J].Power Capacitor&Reactive Power Compensation,2015,36(1):30-34.
[5]牛光辉,同向前,赵航.三相四线制有源电力滤波器的研究[J].电力电容器与无功补偿,2014,35(1):1-5.NIU Guanghui,TONG Xiangqian,ZHAO Hang.Study on active power filter for three-phase four-wire electric power system[J].Power Capacitor&Reactive Power Compensation,2014,35(1):1-5.
[6]QUOC-NAM T,LEE H H.An advanced current control strategy for three-phase shunt active power filters[J].IEEE Transactions on Industrial Electronics,2013,60(12):5400-5410.
[7]BOJOI R,LIMONGI L R,PROFUMO F,et al.Analysis of current controllers for active power filters using selective harmonic compensation schemes[J].IEEJ Transactions on Electrical and Electronic Engineering,2009,4(2):139-157.
[8]钟山,杨晟,赵争鸣.有源电力滤波其技术发展与综述[J].变频器世界,2011(1):45-49.ZHONG Shan,YANG Sheng,ZHAO Zhengming.Technology and development review of active power filter[J].The World of Inverters,2011(1):45-49.
[9]SASAKI H,MACHIDA T.A new method to eliminate AC harmonic current by magnetic flux compensation:consideration on basic design[J].IEEE Trans actions on Power Apparatus and Sys-tems,1971,90(5):2009-2016.
[10]陈兵,谢运祥,宋静娴.单周控制有源电力滤波器关键参数的最优选择[J].电工技术学报,2008,23(7):86-91.CHEN Bing,XIE Yunxiang,SONG Jingxian.Optimal selection of some important parameters in one-cycle controlled active power filter[J].Transactions of China Electrotechnical Society,2008,23(7):86-91.
[11]费万民,吕征宇,钱挺.基于互补策略的新型单周控制有源滤波器[J].电力系统自动化,2003,27(3):50-53.FEI Wanmin,LYU Zhengyu,QIAN Ting.A novel one-cycle control active power filter based on complementary control strateigies[J].Automation of Electric Power Systems,2003,27(3):50-53.
[12]QIAO Chongming,JIN Taotao,SMEDLEY K M.One-cycle control of three-phase active power filter with vector operation[J].IEEE Transactions on Industrial Electronics,2004,51(2):455-463.
[13]QIAO Chongming,SMEDLEY K M,MADDALENO F.A single-phase active power filter with one-cycle control under unipolar operation[J].IEEE Transactions on Circuit and Systems,2004,51(8):1623-1629.
[14]徐明,周林,王伟,等.单相有源电力滤波器的单周控制策略综述[J].电网技术,2006,30(22):81-86.XU Ming,ZHOU Lin,WANG Wei,et al.A survey on one-cycle control strategy for single-phase active power filter[J].Power System Technology,2006,30(22):81-86.
[15]刘清蝉.基于单周控制原理的有源电力滤波器研究[D].北京:华北电力大学,2012.