基于电容电压平衡的三相四开关整流器FCS-MPPC策略
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摘要
针对三相四开关整流器电容电压不平衡,进而影响系统稳定性的问题,提出了电容电压平衡的三相四开关整流器有限控制集模型预测功率控制策略.在控制系统的价值函数中,引入抑制电容电压波动目标项,以保持直流侧电容电压平衡,既兼顾有功/无功功率脉动最小且能有效地平衡电容电压,最终实现网侧电流谐波含量低、波形质量好、系统稳定性高.仿真测试结果验证了所提方法的有效性.
For the problem that the capacitor voltage of the four-switch three-phase rectifier( FSTPR) is unbalanced,which affects the stability of the system,a finite-control-set model predictive power control( FCS-MPPC) strategy for four-switch three-phase rectifier-based on capacitor voltage balancing is proposed. In the cost function of the control system,the objective term of suppressing capacitor voltage fluctuation is introduced to maintain the DC-link capacitor voltage balancing,which not only gives consideration to the minimum active power and reactive power fluctuation but also can effectively balance the capacitor voltage. Finally,the low grid-side current harmonic content,good waveform quality and high system stability could be realized simultaneously,and the effectiveness of the proposed method has been proved.
For the problem that the capacitor voltage of the four-switch three-phase rectifier( FSTPR) is unbalanced,which affects the stability of the system,a finite-control-set model predictive power control( FCS-MPPC) strategy for four-switch three-phase rectifier-based on capacitor voltage balancing is proposed. In the cost function of the control system,the objective term of suppressing capacitor voltage fluctuation is introduced to maintain the DC-link capacitor voltage balancing,which not only gives consideration to the minimum active power and reactive power fluctuation but also can effectively balance the capacitor voltage. Finally,the low grid-side current harmonic content,good waveform quality and high system stability could be realized simultaneously,and the effectiveness of the proposed method has been proved.
引文
[1]徐德鸿,李睿,刘金昌,等.现代整流器技术:有源功率因数校正技术[M].北京:机械工业出版社,2013:113-125.
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[6]WANG R,ZHAO J,LIU Y.A comprehensive investigation of four-switch three-phase voltage source inverter based on double fourier integral analysis[J].IEEE Transactions on Power Electronics,2011,26(10):2774-2787.
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[8]ZENG Z Y,ZHENG W Y,ZHAO R X,et al.Modeling,modulation,and control of the three-phase four-switch PWM rectifier under balanced voltage[J].IEEE Transactions on Power Electronics,2016,31(7):4892-4905.
[9]ZENG Z Y,ZHENG W Y,ZHAO R X.Space-vectorbased hybrid PWM strategy for reduced DC-link capacitor current stress in the post-fault grid-connected three-phase rectifier[J].IEEE Transactions on Power Electronics,2016,63(8):4989-5000.
[10]ZENG Z Y,ZHENG W Y,ZHAO R X.Performance analysis of the zero voltage vector distribution in threephase four-switch converter using a space vector approach[J].IEEE Transactions on Power Electronics,2017,32(1):260-273.
[11]沈坤,章兢,王玲.三相电压型逆变器模型预测控制[J].电工技术学报,2013,28(12):283-289.
[12]孙国凯,都放.基于简化FCS-MPC的风电并网逆变器研究[J].电网与清洁能源,2016,32(6):136-142.
[13]VAZQUEZ S,RODRIGUEZ J,RIVERA M,et al.Model predictive control for power converters and drives:advances and trends[J].IEEE Transactions on Industrial Electronics,2017,64(2):935-947.
[14]RODRIGUEZ J,KAZMIERKOWSKI M P,ESPINOZA JR,et al.State of the art of finite control set model predictive control in power electronics[J].IEEE Transactions on Industrial Informantics,2013,9(2):1003-1016.
[15]JIN N,HU S,GAN C,et al.Finite states model predictive control for fault tolerant operation of three-phase bidirectional AC/DC converter under unbalanced grid voltages[J].IEEE Transactions on Industrial Electronics,2018,65(1):819-829.
[16]陈一民,周京华,卫三民,等.功率变换器和电气传动的预测控制[M].北京:机械工业出版社,2014:145-156.
[2]杨轶成,丁明进,胡炫,等.新型矢量单周控制四象限大功率变换器的研究[J].电测与仪表,2014,51(7):70-74.
[3]杜娟.储能逆变器的控制方法研究[D].哈尔滨:哈尔滨工业大学,2015.
[4]朱翀,曾志勇,赵荣祥,等.电流品质优化的容错型三相四开关逆变器载波调制算法[J].电力自动化设备,2017,37(5):40-47.
[5]LEE T S,LIU J H.Modeling and control of a three-phase four-switch PWM voltage-source rectifier in d-q synchronous frame[J].IEEE Transactions on Power Electronic,2011,26(9):2476-2489.
[6]WANG R,ZHAO J,LIU Y.A comprehensive investigation of four-switch three-phase voltage source inverter based on double fourier integral analysis[J].IEEE Transactions on Power Electronics,2011,26(10):2774-2787.
[7]ZENG Z Y,ZHENG W Y,ZHAO R X,et al.The comprehensive design and optimization of the post-fault grid-connected three-phase PWM rectifier[J].IEEE Transactions on Power Electronics,2016,63(3):1629-1642.
[8]ZENG Z Y,ZHENG W Y,ZHAO R X,et al.Modeling,modulation,and control of the three-phase four-switch PWM rectifier under balanced voltage[J].IEEE Transactions on Power Electronics,2016,31(7):4892-4905.
[9]ZENG Z Y,ZHENG W Y,ZHAO R X.Space-vectorbased hybrid PWM strategy for reduced DC-link capacitor current stress in the post-fault grid-connected three-phase rectifier[J].IEEE Transactions on Power Electronics,2016,63(8):4989-5000.
[10]ZENG Z Y,ZHENG W Y,ZHAO R X.Performance analysis of the zero voltage vector distribution in threephase four-switch converter using a space vector approach[J].IEEE Transactions on Power Electronics,2017,32(1):260-273.
[11]沈坤,章兢,王玲.三相电压型逆变器模型预测控制[J].电工技术学报,2013,28(12):283-289.
[12]孙国凯,都放.基于简化FCS-MPC的风电并网逆变器研究[J].电网与清洁能源,2016,32(6):136-142.
[13]VAZQUEZ S,RODRIGUEZ J,RIVERA M,et al.Model predictive control for power converters and drives:advances and trends[J].IEEE Transactions on Industrial Electronics,2017,64(2):935-947.
[14]RODRIGUEZ J,KAZMIERKOWSKI M P,ESPINOZA JR,et al.State of the art of finite control set model predictive control in power electronics[J].IEEE Transactions on Industrial Informantics,2013,9(2):1003-1016.
[15]JIN N,HU S,GAN C,et al.Finite states model predictive control for fault tolerant operation of three-phase bidirectional AC/DC converter under unbalanced grid voltages[J].IEEE Transactions on Industrial Electronics,2018,65(1):819-829.
[16]陈一民,周京华,卫三民,等.功率变换器和电气传动的预测控制[M].北京:机械工业出版社,2014:145-156.