抑制三相四桥臂逆变器共模电压的三维SVPWM控制策略
|
摘要
研究基于三相四桥臂逆变器的三维空间矢量脉宽调制(3D-SVPWM)控制策略。针对大功率变流系统存在较大共模电压,易对电机等负载造成伤害,影响电网电能质量等问题,提出一种改进的3D-SVPWM控制策略。首先,对三相四桥臂逆变器的拓扑结构进行分析,说明了产生共模电压的原因。然后,在传统3D-SVPWM控制策略的基础上,提出选取参考电压矢量附近两个相反的非零矢量来代替零矢量的方法。最后,通过MATLAB/Simulink建模仿真证明,改进后的控制策略不受负载平衡状态改变等方面的影响,在不改变直流电压利用率的前提下,可以有效降低共模电压,达到主动抑制的目的。
The three-dimensional space vector pulse width modulation(3 D-SVPWM)control strategy for suppressing commonmode voltage of three-phase four-bridge inverter is analyzed.Because the common mode voltage generated from the high power convertor system is easy to damage the load such as motor,and affect the power quality of the power supply,an optimized 3 DSVPWM control strategy is proposed.Firstly,the topology of three-phase four-bridge inverter is described,and the reason of generating the common mode voltage is given.Then,according to the traditional 3 D-SVPWM control strategy,two converse non-zero vectors near the reference vector are selected to replace the zero vectors.Finally,the modeling and simulation are carried out through MATLAB/Simulink and the results show that the improved control strategy is not affected by the changes of load balance status.Moreover,without changing the DC voltage utilization,the common-mode voltage can be effectively decreased to realize active suppression.
The three-dimensional space vector pulse width modulation(3 D-SVPWM)control strategy for suppressing commonmode voltage of three-phase four-bridge inverter is analyzed.Because the common mode voltage generated from the high power convertor system is easy to damage the load such as motor,and affect the power quality of the power supply,an optimized 3 DSVPWM control strategy is proposed.Firstly,the topology of three-phase four-bridge inverter is described,and the reason of generating the common mode voltage is given.Then,according to the traditional 3 D-SVPWM control strategy,two converse non-zero vectors near the reference vector are selected to replace the zero vectors.Finally,the modeling and simulation are carried out through MATLAB/Simulink and the results show that the improved control strategy is not affected by the changes of load balance status.Moreover,without changing the DC voltage utilization,the common-mode voltage can be effectively decreased to realize active suppression.
引文
[1]张怡海.PWM逆变器驱动异步电机系统的共模电压研究[D].四川:西南交通大学,2014.
[2]姜艳姝,于晓洋,艾跃,等.PWM多驱动系统中的共模电压及其抑制[J].电机与控制学报,2010,14(11):44-48.JIANG Yanshu,YU Xiaoyang,AI Yue,et al.Common-mode voltage and its cancellation in PWM multi-drive system[J].Electric Machines and Control,2010,14(11):44-48.
[3]HU Anping,XU Dewei,WU Bin,et al.Reference trajectory optimized SVM for high power current source converters to improve harmonic performance and reduce common mode voltage[J].IEEE Transactions on Power Electronics,2015,30(7):3488-3498.
[4]HABETLER T G,NAIK R,NONDAHL T A.Design and implementation of an inverter output LC filter used for dv/dt reduction[J].IEEE Transactions on Power Electronics,2002,17(3):327-331.
[5]OGASAWARA S,AYANO H,AKAGI H.An active circuit for cancellation of common mode voltage generated by a PWM inverter[J].IEEE Transactions on Power Electronics,1998,13(5):835-841.
[6]王志华,尹项根,程汉湘,等.级联型高压变频调速系统共模电压分析[J].电力系统自动化,2003,27(15):58-62.WANG Zhihua,YIN Xianggen,CHENG Hanxiang,et al.Common mode voltage analysis of cascaded MV-VFD[J].Automation of Electric Power Systems,2003,27(15):58-62.
[7]王浩,何晋伟,贾宏杰.面向微网群的多端口电流源变流器共模电压抑制仿真[J].电力系统自动化,2017,41(18):74-79.DOI:10.7500/AEPS20170224006WANG Hao,HE Jinwei,JIA Hongjie.Common-mode voltage suppression simulation for multi-port current source converter of microgrid clusters[J].Automation of Electric Power Systems,2017,41(18):74-79.DOI:10.7500/AEPS20170224006.
[8]王跃,赵文健,胡耀威,等.T型H桥级联多电平变换器的改进型脉宽调制策略[J].电力系统自动化,2016,40(19):87-93.DOI:10.7500/AEPS20150404002.WANG Yue,ZHAO Wenjian,HU Yaowei,et al.Improved phase width modulation strategy for T-type H-bridge based cascaded multilevel converter[J].Automation of Electric Power Systems,2016,40(19):87-93.DOI:10.7500/AEPS20150404002
[9]ZHANG R,PRASAD V H,BOROYEVICH D,et al.A threephase inverter with a neutral leg with space vector modulation[C]//Conference Record of IEEE on APEC,February 27,1997,Atlanta,GA,USA:851-863.
[10]GARCIA C,RIVERA M,LOPEZ M,et al.Predictive current control of a four-leg indirect matrix converter with imposed source currents and common-mode voltage reduction[C]//Energy Conversion Congress and Exposition(ECCE),September 15-19,2013,Denver,CO,USA:982-989.
[11]黄劲,熊蕊,王志,等.采用三相四桥臂抑制逆变器共模干扰的SPWM控制策略[J].电工技术学报,2003,24(3):110-115.HUANG Jin,XIONG Rui,WANG Zhi,et al.SPWM control strategy to reduce inverter common-mode interferences based on three-phase four-leg structure[J].Transactions of China Electrotechical Society,2003,24(3):110-115.
[12]ORTJOHANN E,MOHD A,HAMSIC N,et al.Design and experimental investigation of space vector modulation for threeleg four-wire voltage source inverters[C]//13th European Conference on Power Electronics and Applications,September8-10,2009,Barcelona,Spain:1-6.
[13]PERALES M A,PRATS M,PORTILLO R,et al.Threedimensional space vector modulation in abc coordinates for four-leg voltage source converters[J].IEEE Power Electronics Letters,2003,1(4):104-109.
[14]ZHANG M,ATKINSON D,JI B,et al.A near-state threedimensional space vector modulation for a three-phase four-leg voltage source inverter[J].IEEE Transactions on Power Electronics,2014,29(11):5715-5726
[15]黄劲.基于三相四桥臂逆变器的机驱动系统EMC及可靠性研究[D].武汉:华中科技大学,2009.
[2]姜艳姝,于晓洋,艾跃,等.PWM多驱动系统中的共模电压及其抑制[J].电机与控制学报,2010,14(11):44-48.JIANG Yanshu,YU Xiaoyang,AI Yue,et al.Common-mode voltage and its cancellation in PWM multi-drive system[J].Electric Machines and Control,2010,14(11):44-48.
[3]HU Anping,XU Dewei,WU Bin,et al.Reference trajectory optimized SVM for high power current source converters to improve harmonic performance and reduce common mode voltage[J].IEEE Transactions on Power Electronics,2015,30(7):3488-3498.
[4]HABETLER T G,NAIK R,NONDAHL T A.Design and implementation of an inverter output LC filter used for dv/dt reduction[J].IEEE Transactions on Power Electronics,2002,17(3):327-331.
[5]OGASAWARA S,AYANO H,AKAGI H.An active circuit for cancellation of common mode voltage generated by a PWM inverter[J].IEEE Transactions on Power Electronics,1998,13(5):835-841.
[6]王志华,尹项根,程汉湘,等.级联型高压变频调速系统共模电压分析[J].电力系统自动化,2003,27(15):58-62.WANG Zhihua,YIN Xianggen,CHENG Hanxiang,et al.Common mode voltage analysis of cascaded MV-VFD[J].Automation of Electric Power Systems,2003,27(15):58-62.
[7]王浩,何晋伟,贾宏杰.面向微网群的多端口电流源变流器共模电压抑制仿真[J].电力系统自动化,2017,41(18):74-79.DOI:10.7500/AEPS20170224006WANG Hao,HE Jinwei,JIA Hongjie.Common-mode voltage suppression simulation for multi-port current source converter of microgrid clusters[J].Automation of Electric Power Systems,2017,41(18):74-79.DOI:10.7500/AEPS20170224006.
[8]王跃,赵文健,胡耀威,等.T型H桥级联多电平变换器的改进型脉宽调制策略[J].电力系统自动化,2016,40(19):87-93.DOI:10.7500/AEPS20150404002.WANG Yue,ZHAO Wenjian,HU Yaowei,et al.Improved phase width modulation strategy for T-type H-bridge based cascaded multilevel converter[J].Automation of Electric Power Systems,2016,40(19):87-93.DOI:10.7500/AEPS20150404002
[9]ZHANG R,PRASAD V H,BOROYEVICH D,et al.A threephase inverter with a neutral leg with space vector modulation[C]//Conference Record of IEEE on APEC,February 27,1997,Atlanta,GA,USA:851-863.
[10]GARCIA C,RIVERA M,LOPEZ M,et al.Predictive current control of a four-leg indirect matrix converter with imposed source currents and common-mode voltage reduction[C]//Energy Conversion Congress and Exposition(ECCE),September 15-19,2013,Denver,CO,USA:982-989.
[11]黄劲,熊蕊,王志,等.采用三相四桥臂抑制逆变器共模干扰的SPWM控制策略[J].电工技术学报,2003,24(3):110-115.HUANG Jin,XIONG Rui,WANG Zhi,et al.SPWM control strategy to reduce inverter common-mode interferences based on three-phase four-leg structure[J].Transactions of China Electrotechical Society,2003,24(3):110-115.
[12]ORTJOHANN E,MOHD A,HAMSIC N,et al.Design and experimental investigation of space vector modulation for threeleg four-wire voltage source inverters[C]//13th European Conference on Power Electronics and Applications,September8-10,2009,Barcelona,Spain:1-6.
[13]PERALES M A,PRATS M,PORTILLO R,et al.Threedimensional space vector modulation in abc coordinates for four-leg voltage source converters[J].IEEE Power Electronics Letters,2003,1(4):104-109.
[14]ZHANG M,ATKINSON D,JI B,et al.A near-state threedimensional space vector modulation for a three-phase four-leg voltage source inverter[J].IEEE Transactions on Power Electronics,2014,29(11):5715-5726
[15]黄劲.基于三相四桥臂逆变器的机驱动系统EMC及可靠性研究[D].武汉:华中科技大学,2009.