TSMC混合变压器的预测控制研究
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摘要
针对目前混合变压器拓扑所存在的电路结构不紧凑、调制策略复杂、换流繁琐等问题,提出了一种基于双级矩阵变换器(Two-stage Matrix Converter, TSMC)的混合变压器拓扑。对TSMC混合变压器的拓扑结构、工作原理进行了分析。考虑到TSMC混合变压器在调节负载电压时需要较快的动态响应速度,提出了TSMC混合变压器的模型预测控制策略。建立了拓扑的离散状态空间模型,通过对负载电压与输入无功功率进行两步预测,实现对延时效应的补偿。根据两步预测值设计目标函数,利用目标函数预先评估各个开关状态的控制效果来控制开关状态,从而提高控制系统的动态响应速度。最后采用Matlab/Simulink工具建立了TSMC混合变压器系统的仿真模型。仿真结果验证了所提拓扑的可行性以及所提控制策略的良好动态特性。
A hybrid transformer topology based on Two-Stage Matrix Converter(TSMC) is proposed to solve the problems of compact circuit structure, complex modulation strategy and complicated commutation in current hybrid transformer topology. The topological structure and working principle of TSMC hybrid transformer are analyzed. Considering that the TSMC hybrid transformer needs a faster dynamic response speed, the model predictive control strategy of TSMC hybrid transformer is proposed. A topological discrete state space model is established to compensate the delay effect by two-step prediction of load voltage and input reactive power. According to the two-step predictive value, the objective function is designed to evaluate the control effect of each switch state in advance to control the switch state, so as to improve the dynamic response speed of the control system. Simulation model of the TSMC hybrid transformer system is established by using the Matlab/Simulink tool. Simulation results verify the feasibility of the proposed topology and the good dynamic characteristics of the proposed control strategy.
A hybrid transformer topology based on Two-Stage Matrix Converter(TSMC) is proposed to solve the problems of compact circuit structure, complex modulation strategy and complicated commutation in current hybrid transformer topology. The topological structure and working principle of TSMC hybrid transformer are analyzed. Considering that the TSMC hybrid transformer needs a faster dynamic response speed, the model predictive control strategy of TSMC hybrid transformer is proposed. A topological discrete state space model is established to compensate the delay effect by two-step prediction of load voltage and input reactive power. According to the two-step predictive value, the objective function is designed to evaluate the control effect of each switch state in advance to control the switch state, so as to improve the dynamic response speed of the control system. Simulation model of the TSMC hybrid transformer system is established by using the Matlab/Simulink tool. Simulation results verify the feasibility of the proposed topology and the good dynamic characteristics of the proposed control strategy.
引文
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[2]刘爽,牟龙华,许旭峰,等.电力电子器件故障对微电网运行可靠性的影响[J].电力系统保护与控制,2017,45(24):63-70.LIU Shuang,MU Longhua,XU Xufeng,et al.Research on power electronic devices failures’effect on microgrid operational reliability[J].Power System Protection and Control,2017,45(24):63-70.
[3]杨新法,苏剑,吕志鹏,等.微电网技术综述[J].中国电机工程学报,2014,34(1):57-70.YANG Xinfa,SU Jian,LüZhipeng,et al.Overview on micro-grid technology[J].Proceedings of the CSEE,2014,34(1):57-70.
[4]孔祥平,李鹏,黄浩声,等.统一潮流控制器对线路纵联保护的影响分析[J].电力系统保护与控制,2017,45(2):14-21.KONG Xiangping,LI Peng,HUANG Haosheng,et al.Impact analysis of unified power flow controller on transmission line pilot protection[J].Power System Protection and Control,2017,45(2):14-21.
[5]李兰芳.输电系统SVC电压调节器增益自适应控制方法[J].电力系统保护与控制,2018,46(3):61-66.LI Lanfang.Gain adaptive control method of the voltage regulator for SVC in transmission system[J].Power System Protection and Control,2018,46(3):61-66.
[6]AELOIZA E,ENJETI P,MORAN L,et al.Next generation distribution transformer:to address power quality for critical loads[C]//IEEE 34th Annual Conference on Power Electronics Specialist,2003.PESC'03,June 15-19,2003,Acapulco,Mexico:1266-1271.
[7]FEDYCZAK Z,KANIEWSKI J,KLYTA M.Singlephase hybrid transformer using matrix-reactance chopper with?uk topology[C]//European Conference on Power Electronics and Applications,September 2-5,2007,Aalborg,Denmark:1-10.
[8]FEDYCZAK Z,KANIEWSKI J.Modeling and analysis of three-phase hybrid transformer using matrix converter[C]//2007 Compatibility in Power Electronics,May 29-June 1,2007,Gdansk,Poland:1-6.
[9]KANIEWSKI J,FEDYCZAK Z,KLYTTA M,et al.Implementation of a three-phase hybrid transformer using a matrix chopper[C]//2009 13th European Conference on Power Electronics and Applications,September 8-10,2009,Barcelona,Spain:1-10.
[10]KANIEWSKI J.Three-phase voltage sag/swell compensator with phase shifter function based on bipolar matrix-reactance chopper[C]//2014 International Symposium on Power Electronics,Electrical Drives,Automation and Motion,June 18-20,2014,Ischia,Italy:637-642.
[11]KANIEWSKI J,FEDYCZAK Z,BENYSEK G.ACvoltage sag/swell compensator based on three-phase hybrid transformer with buck-boost matrix-reactance chopper[J].IEEE Transactions on Industrial Electronics,2014,61(8):3835-3846.
[12]SZCZESNIAK P,KANIEWSKI J.A voltage regulator/conditioner based on hybrid transformer with matrix converter[C]//IECON 2014-40th Annual Conference of the IEEE Industrial Electronics Society,October 29-November 1,2014,Dallas,TX,USA:3292-3297.
[13]SZCZESNIAK P,KANIEWSKI J.Hybrid transformer with matrix converter[J].IEEE Transactions on Power Delivery,2016,31(3):1388-1396.
[14]SZCZESNIAK P.A modelling of AC voltage stabilizer based on a hybrid transformer with matrix converter[J].Archives of Electrical Engineering,2017,66(2):337-346.
[15]SZCZESNIAK P,KANIEWSKI J,JARNUT M.AC-ACpower electronic converters without DC energy storage:a review[J].Energy Conversion&Management,2015,92:483-497.
[16]邓文浪,杨欣荣,朱建林,等.18开关双级矩阵变换器的空间矢量调制策略及其仿真研究[J].中国电机工程学报,2005,25(15):84-90.DENG Wenlang,YANG Xinrong,ZHU Jianlin,et al.Space vector modulation strategy of two-stage matrix converter with 18 switches and it’s simulation study[J].Proceedings of the CSEE,2005,25(15):84-90.
[17]何志兴,罗安,熊桥坡,等.模块化多电平变换器模型预测控制[J].中国电机工程学报,2016,36(5):1366-1375.HE Zhixing,LUO An,XIONG Qiaopo,et al.Model predictive control of modular multilevel converters[J].Proceedings of the CSEE,2016,36(5):1366-1375.
[18]RIVERA M,CORREA P,RODRIGUEZ J,et al.Predictive control of the indirect matrix converter with active damping[C]//2009 IEEE 6th International Power Electronics and Motion Control Conference,May 17-20,2009,Wuhan,China:1738-1744.
[19]席裕庚,李德伟,林姝.模型预测控制——现状与挑战[J].自动化学报,2013,39(3):222-236.XI Yugeng,LI Dewei,LIN Shu.Model predictive control-status and challenges[J].Acta Automatica Sinica,2013,39(3):222-236.
[20]RIVERA M,RODRIGUEZ J,WU B,et al.Current control for an indirect matrix converter with filter resonance mitigation[J].IEEE Transactions on Industrial Electronics,2012,59(1):71-79.
[21]PIROOZ A,NOROOZIAN R.Predictive voltage control of three-phase voltage source inverters to supply nonlinear and unbalanced loads[C]//The 6th Power Electronics,Drive Systems&Technologies Conference(PEDSTC2015),February 3-4,2015,Tehran,Iran:389-394.
[22]AYAD A,KARAMANAKOS P,KENNEL R.Direct model predictive voltage control of quasi-Z-source inverters with LC filters[C]//2016 18th European Conference on Power Electronics and Applications(EPE'16 ECCE Europe),September 5-9,2016,Karlsruhe,Germany:1-10.