带负载电流前馈的VIENNA整流器PR控制
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摘要
针对三相VIENNA整流器传统PI控制器存在输入交流静差和抗负载扰动动态性能差的问题,提出一种适用于VIENNA整流器的负载电流前馈比例谐振(PR)控制策略。利用PR控制器有效消除输入电压电流相位差,实现无静差跟踪。并在电流闭环外嵌入负载电流前馈补偿环节,将负载扰动信息通过前馈环节直接作用于电流给定,提高抗负载扰动动态调节时间,增强系统抗扰性。并将所提方法与传统PI控制策略进行性能对比测试,实验结果表明所用方法可以有效提高负载扰动下的动态性能和改善输入功率因数。
Aiming at the disadvantage of the conventional PI controller of three-phase VIENNA rectifier,which has poor input AC static error and anti-load disturbance dynamic performance,a load current feedforward proportional resonant( PR) control algorithm for VIENNA rectifier was proposed. PR controller is used to eliminate the phase difference between the input voltage and current effectively as well as realize the tracking without static error. The load current feed-forward compensation link is embedded outside the current closed loop,and the load disturbance information is directly acted on the current through the feedforward link,which improves the dynamic adjustment time of anti-load disturbance and enhances the system immunity. The performance of the proposed method was compared with that of traditional PI control strategy. The test results show that the proposed algorithm can effectively enhance the dynamic performance and input power factor under load disturbance operation condition.
Aiming at the disadvantage of the conventional PI controller of three-phase VIENNA rectifier,which has poor input AC static error and anti-load disturbance dynamic performance,a load current feedforward proportional resonant( PR) control algorithm for VIENNA rectifier was proposed. PR controller is used to eliminate the phase difference between the input voltage and current effectively as well as realize the tracking without static error. The load current feed-forward compensation link is embedded outside the current closed loop,and the load disturbance information is directly acted on the current through the feedforward link,which improves the dynamic adjustment time of anti-load disturbance and enhances the system immunity. The performance of the proposed method was compared with that of traditional PI control strategy. The test results show that the proposed algorithm can effectively enhance the dynamic performance and input power factor under load disturbance operation condition.
引文
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[15]王君瑞,钟彦儒,宋卫章,等.双级矩阵变换器励磁双馈风力发电系统比例谐振控制[J].高电压技术,2013,39(5):1210.WANG Junrui,ZHONG Yanrou,SONG Weizhang,et al. Proportional control for two-stage matrix converter excited double-fed wind power generation system[J]. High Voltage Engineering,2013,39(5):1210.
[16]倪靖猛,方宇,邢岩,等.基于优化负载电流前馈控制的400 Hz三相PWM航空整流器[J].电工技术学报,2011,26(2):141.NI Jingmeng,FANG Yu,XING Yan,et al. Three phase 400 Hz PWM rectifier based on optimized feedforward control for aeronautical application[J]. Transactions of China Electrotechnical Society,2011,26(2):141.
[17]唐林.光伏并网逆变器控制技术的研究[D].成都:西南交通大学,2013.
[2]牛利勇,高瑞雪,王晓强. VIENNA整流器的指令电压辅助区间判断SVPWM控制[J].电机与控制学报,2016,20(5):45.NIU Liyong,GAO Ruixu,WANG Xiaoqiang. Control of VIENNA rectifier with reference voltage assisted sector judgment based SVPWM[J]. Electric Machines and Control,2016,20(5):45.
[3]李文娟,邸金霖,冯杰.无死区效应的TNPC型三电平SVG[J].哈尔滨理工大学学报,2017,22(5):46.LI Wenjuan,DI Jinlin,FENG Jie. Three-level static var generator by TNPC type with no dead-zone effect[J]. Journal of Harbin University of Science and Technology,2017,22(5):46.
[4]程启明,程尹曼,薛阳,等.三相电压源型PWM整流器控制方法的发展综述[J].电力系统保护与控制,2002,40(3):145.CHENG Qiming,CHENG Yiman,XUE Yang,et al. A summary of current control methods for three-phase voltage-source PWM rectifiers[J]. Power System Protection and Control, 2002,40(3):145.
[5]周奖,陆翔.三相三电平三开关VIENNA整流器设计与实现[J].电工电气,2014(1):11.ZHOU Jiang,LU Xiang. Design and realization of three-phase level switch(VIENNA)rectifier[J]. Electrotechnics Electric,2014(1):11.
[6]宋卫章,黄骏,钟彦儒,等.带中点电位平衡的Vienna整流器滞环电流控制方法[J].电网技术,2013,37(7):1909.SONG Weizhang,HUANG Jun,ZHONG Yanru,et al. A hysteresis current control method with neutral point potential balancing control for Vienna rectifier[J]. Power System Technology,2013,37(7):1909.
[7]刘斌,谢积锦,李俊,等.基于自适应比例谐振的新型并网电流控制策略[J].电工技术学报,2013,28(9):186.LIU Bin,XIE Jijin,LI Jun,et al. Novel grid-connected current control strategies based on self-adaptive proportional-resonant[J].Transactions of China Electrotechnical Society,2013,28(9):186.
[8]张纯江,张婧,邬伟扬,等.基于Delta算子的谐振控制器实现高频链逆变器波形控制[J].电工技术学报,2008,23(7):81.ZHANG Chunjiang,ZHANG Jing,WU Weiyang,et al. High-frequency link inverter waveform control with resonant controller based on Delta operator[J]. Transactions of China Electrotechnical Society,2008,23(7):81.
[9]李剑林,田联房,王孝洪,等. PWM整流器负载电流前馈控制策略研究[J].电力电子技术,2011,45(11):58.LI Jianlin,TIAN Lianfang,WANG Xiaohong,et al. Study on load current feed-forward control strategy for PWM rectifier[J]. Power Electronics,2011,45(11):58.
[10]马琳,金新民,唐芬,等.三相并网逆变器比例谐振控制及其网压前馈问题分析[J].电工技术学报,2012,27(8):56.MA Lin,JIN Xinmin,TANG Fen,et al. Analysis of three-phase grid-connected inverter proportional resonant control and grid voltage feed-forward[J]. Transactions of China Electrotechnical Society,2012,27(8):56.
[11]刘波,杨旭,孔繁麟,等.三相光伏并网逆变器控制策略[J].电工技术学报,2012,27(8):64.LIU Bo,YANG Xu,KONG Fanlin,et al. Control strategy study for three phase photovoltaic grid-connected inverters[J]. Transactions of China Electrotechnical Society,2012,27(8):64.
[12]李子欣,李耀华,王平,等. PWM整流器在静止坐标系下的准直接功率控制[J].中国电机工程学报,2010,30(9):47.LI Zixin,LI Yaohua,WANG Ping,et al. Novel quasi direct power control method for PWM rectifier in stationary frame[J]. Proceedings of the CSEE,2010,30(9):47.
[13]张东升.高功率因数VIENNA整流器控制策略的研究[D].哈尔滨:哈尔滨工业大学,2009.
[14]赵仁德,贺益康,刘其辉.提高PWM整流器抗负载扰动性能研究[J].电工技术学报,2004,19(8):67.ZHAO Rende,HE Yikang,LIU Qihui. Research on improvement of anti disturbance performance for three phase PWM rectifiers[J]. Transactions of China Electrotechnical Society,2004,19(8):67.
[15]王君瑞,钟彦儒,宋卫章,等.双级矩阵变换器励磁双馈风力发电系统比例谐振控制[J].高电压技术,2013,39(5):1210.WANG Junrui,ZHONG Yanrou,SONG Weizhang,et al. Proportional control for two-stage matrix converter excited double-fed wind power generation system[J]. High Voltage Engineering,2013,39(5):1210.
[16]倪靖猛,方宇,邢岩,等.基于优化负载电流前馈控制的400 Hz三相PWM航空整流器[J].电工技术学报,2011,26(2):141.NI Jingmeng,FANG Yu,XING Yan,et al. Three phase 400 Hz PWM rectifier based on optimized feedforward control for aeronautical application[J]. Transactions of China Electrotechnical Society,2011,26(2):141.
[17]唐林.光伏并网逆变器控制技术的研究[D].成都:西南交通大学,2013.