单相级联H桥整流器无锁相环瞬态直接电流控制
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摘要
无工频变压器牵引传动系统是高速动车组轻量化的发展趋势。以无工频变压器牵引传动系统前端单相级联H桥整流器为研究对象,取消了网侧电压锁相环,实现网侧电流实时跟踪网侧电压为目的,建立了单相级联H桥整流器的数学模型;根据瞬时有功电流的定义,提出了一种无锁相环瞬态直接电流控制方法,实现了非理想电网电压情况下网侧电流对电压的实时准确跟踪控制;并在此基础上,提出了无锁相环直流侧电容电压均衡控制方法,解决了负载不平衡时直流侧电容电压不平衡的问题。最后,对所提出的无锁相环瞬态直流电流控制方法进行了计算机仿真,仿真结果验证了该算法的正确性和有效性。
Transformerless traction drive system is the trend of lightweight development of high-speed railway train.In order to implement voltage tracking control by current of the front-end single phase cascaded H-bridge rectifier without phase-locked loop(PLL),a single phase cascaded H-bridge rectifier was modeled with mathematic expressions.According to the definition of instantaneous active current,a transient direct current control method without PLL was proposed to implement the real-time tracking of the grid current to the grid voltage under the condition of non-ideal grid voltage.On the basis of this,a DC-link voltage balancing control method without PLL was proposed to solve the unbalance of DC-link capacitor voltages caused by the load imbalance.Finally,the proposed transient direct current control method without PLL was verified in simulation,and the simulation has verified the correctness and validity of the method.
Transformerless traction drive system is the trend of lightweight development of high-speed railway train.In order to implement voltage tracking control by current of the front-end single phase cascaded H-bridge rectifier without phase-locked loop(PLL),a single phase cascaded H-bridge rectifier was modeled with mathematic expressions.According to the definition of instantaneous active current,a transient direct current control method without PLL was proposed to implement the real-time tracking of the grid current to the grid voltage under the condition of non-ideal grid voltage.On the basis of this,a DC-link voltage balancing control method without PLL was proposed to solve the unbalance of DC-link capacitor voltages caused by the load imbalance.Finally,the proposed transient direct current control method without PLL was verified in simulation,and the simulation has verified the correctness and validity of the method.
引文
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[7]陶兴华,李永东,孙敏.一种H桥级联型PWM整流器的直流母线电压平衡控制新方法[J].电工技术学报,2011,26(8):85-89.TAO Xinghua,LI Yongdong,SUN Min.A Novel DC-link Voltages Balancing Control Method for Cascaded H-bridge Rectifier[J].Transactions of China Electrotechnical Society,2011,26(8):85-89.
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[9]顾春阳,郑泽东,李永东.用于机车牵引的新型级联H桥整流器电压平衡方法[J].电工技术学报,2013,28(12):168-172.GU Chunyang,ZHENG Zedong,LI Yongdong.A Novel Voltage Balancing Method of Cascaded H-bridge Rectifiers for Locomotive Traction Applications[J].Transactions of China Electrotechnical Society,2013,28(12):168-172.
[10]王顺亮,宋文胜,冯晓云.基于电压补偿分量注入的单相级联H桥整流器载波调制与电容电压平衡方法[J].中国电机工程学报,2015,35(12):3117-3123.WANG Shunliang,SONG Wensheng,FENG Xiaoyun.Carrier-based Modulation and Capacitor Voltage Balance Control Method with Voltage Offset Injection of Single Phase Cascaded H-bridge Rectifiers[J].Proceedings of the CSEE,2015,35(12):3117-3123.
[11]王顺亮,宋文胜,冯晓云.一种单相级联H桥整流器电压快速平衡方法[J].电机与控制学报,2016,20(5):37-44.WANG Shunliang,SONG Wensheng,FENG Xiaoyun.One Fast Voltage-balancing Method of Single Phase Cascaded H-bridge Rectifiers[J].Electric Machines and Control,2016,20(5):37-44.
[12]王顺亮,宋文胜,冯晓云.一种单相级联H桥整流器SVPWM及其电容电压平衡方法[J].铁道学报,2016,38(7):26-33.WANG Shunliang,SONG Wensheng,FENG Xiaoyun.A SVPWM Method with Capacitor Voltage Balancing Control for Single Phase Cascaded H-bridge Rectifiers[J].Journal of the China Railway Society,2016,38(7):26-33.
[13]李响,郭希铮,游小杰,等.一种改进的级联H桥整流器直流电压平衡策略[J].电工技术学报,2017,32(4):66-75.LI Xiang,GUO Xizheng,YOU Xiaojie,et al.An Advanced DC Voltage Balance Strategy for Cascaded HBridge Rectifier[J].Transactions of China Electrotechnical Society,2017,32(4):66-75.
[14]盘宏斌,朱鸿章,肖志勇,等.级联H桥整流器的新型直流电压与无功平衡控制策略[J].中国电机工程学报,2017,37(12):3565-3573.PAN Hongbin,ZHU Hongzhang,XIAO Zhiyong,et al.A Novel DC Voltage and Reactive Power Balance Control Strategy for Cascaded H Bridge Rectifier[J].Proceedings of the CSEE,2017,37(12):3565-3573.
[15]周福林,李群湛,解绍锋,等.无锁相环单相无功谐波电流实时检测方法[J].电工技术学报,2010,25(1):178-182.ZHOU Fulin,LI Qunzhan,XIE Shaofeng,et al.Real Time Detecting Method for Single-phase Reactive and Harmonics Currents Detection without PLL[J].Transactions of China Electrotechnical Society,2010,25(1):178-182.
[16]杨韬,帅智康,兰征,等.直流电压不平衡下的单相级联PWM整流器无锁相环均压控制[J].电网技术,2015,39(4):1167-1172.YANG Tao,SHUAI Zhikang,LAN Zheng,et al.Voltage-sharing Control of Single-phase Cascaded PWM Rectifier without Phase-lock Loop under Unbalanced DC Voltage Condition[J].Power System Technology,2015,39(4):1167-1172.
[17]王立乔,齐飞.级联型多电平变流器新型载波相移SPWM研究[J].中国电机工程学报,2010,30(3):28-34.WANG Liqiao,QI Fei.Novel Carrier Phase-shifted SPWM for Cascade Multilevel Converter[J].Proceedings of the CSEE,2010,30(3):28-34.
[18]王兆安,杨君,刘进军.谐波抑制与无功功率补偿[M].北京:机械工业出版社,2015.
[19]王茂海,刘会金.通用瞬时功率定义及广义谐波理论[J].中国电机工程学报,2001,21(9):68-73.WANG Maohai,LIU Huijin.A Universal Definition of Instantaneous Power and Broad-sense Harmonic Theory[J].Proceedings of the CSEE,2001,21(9):68-73.
[2]DRABEK P,PEROUTKA Z,PITTERMANN M,et al.New Configuration of Traction Converter with Mediumfrequency Transformer Using Matrix Converters[J].IEEE Transactions on Industrial Electronics,2011,58(11):5041-5048.
[3]ZHAO C,DUJIC D,MESTER A,et al.Power Electronic Traction Transformer-medium Voltage Prototype[J].IEEE Transactions on Industrial Electronics,2014,61(7):3257-3268.
[4]ZHAO T F,WANG G Y,BHATTACHARYA S,et al.Voltage and Power Balance Control for a Cascaded Hbridge Converter-based Solid-state Transformer[J].IEEE Transactions on Power Electronics,2013,28(4):1523-1532.
[5]TOWNSEND C,SUMMERS T,VODDEN J,et al.Optimization of Switching Losses and Capacitor Voltage Ripple Using Model Predictive Control of a Cascaded H-bridge Multilevel STATCOM[J].IEEE Transactions on Power Electronics,2013,28(7):3077-3087.
[6]陶兴华,李永东,孙敏.基于功率反馈的H桥级联型整流器电压平衡控制算法[J].清华大学学报(自然科学版),2011,51(7):903-908.TAO Xinghua,LI Yongdong,SUN Min.Voltage Balancing Control Algorithm for Cascaded H-bridge Rectifier Based on Active Power Feedback[J].Journal of Tsinghua University(Science and Technology),2011,51(7):903-908.
[7]陶兴华,李永东,孙敏.一种H桥级联型PWM整流器的直流母线电压平衡控制新方法[J].电工技术学报,2011,26(8):85-89.TAO Xinghua,LI Yongdong,SUN Min.A Novel DC-link Voltages Balancing Control Method for Cascaded H-bridge Rectifier[J].Transactions of China Electrotechnical Society,2011,26(8):85-89.
[8]陶兴华,李永东,宋义超,等.H桥级联型整流器直流电压平衡控制改进算法[J].高电压技术,2012,38(2):505-512.TAO Xinghua,LI Yongdong,SONG Yichao,et al.Improved DC-link Voltage Balancing Method for Cascaded Hbridge Rectifier[J].High Voltage Engineering,2012,38(2):505-512.
[9]顾春阳,郑泽东,李永东.用于机车牵引的新型级联H桥整流器电压平衡方法[J].电工技术学报,2013,28(12):168-172.GU Chunyang,ZHENG Zedong,LI Yongdong.A Novel Voltage Balancing Method of Cascaded H-bridge Rectifiers for Locomotive Traction Applications[J].Transactions of China Electrotechnical Society,2013,28(12):168-172.
[10]王顺亮,宋文胜,冯晓云.基于电压补偿分量注入的单相级联H桥整流器载波调制与电容电压平衡方法[J].中国电机工程学报,2015,35(12):3117-3123.WANG Shunliang,SONG Wensheng,FENG Xiaoyun.Carrier-based Modulation and Capacitor Voltage Balance Control Method with Voltage Offset Injection of Single Phase Cascaded H-bridge Rectifiers[J].Proceedings of the CSEE,2015,35(12):3117-3123.
[11]王顺亮,宋文胜,冯晓云.一种单相级联H桥整流器电压快速平衡方法[J].电机与控制学报,2016,20(5):37-44.WANG Shunliang,SONG Wensheng,FENG Xiaoyun.One Fast Voltage-balancing Method of Single Phase Cascaded H-bridge Rectifiers[J].Electric Machines and Control,2016,20(5):37-44.
[12]王顺亮,宋文胜,冯晓云.一种单相级联H桥整流器SVPWM及其电容电压平衡方法[J].铁道学报,2016,38(7):26-33.WANG Shunliang,SONG Wensheng,FENG Xiaoyun.A SVPWM Method with Capacitor Voltage Balancing Control for Single Phase Cascaded H-bridge Rectifiers[J].Journal of the China Railway Society,2016,38(7):26-33.
[13]李响,郭希铮,游小杰,等.一种改进的级联H桥整流器直流电压平衡策略[J].电工技术学报,2017,32(4):66-75.LI Xiang,GUO Xizheng,YOU Xiaojie,et al.An Advanced DC Voltage Balance Strategy for Cascaded HBridge Rectifier[J].Transactions of China Electrotechnical Society,2017,32(4):66-75.
[14]盘宏斌,朱鸿章,肖志勇,等.级联H桥整流器的新型直流电压与无功平衡控制策略[J].中国电机工程学报,2017,37(12):3565-3573.PAN Hongbin,ZHU Hongzhang,XIAO Zhiyong,et al.A Novel DC Voltage and Reactive Power Balance Control Strategy for Cascaded H Bridge Rectifier[J].Proceedings of the CSEE,2017,37(12):3565-3573.
[15]周福林,李群湛,解绍锋,等.无锁相环单相无功谐波电流实时检测方法[J].电工技术学报,2010,25(1):178-182.ZHOU Fulin,LI Qunzhan,XIE Shaofeng,et al.Real Time Detecting Method for Single-phase Reactive and Harmonics Currents Detection without PLL[J].Transactions of China Electrotechnical Society,2010,25(1):178-182.
[16]杨韬,帅智康,兰征,等.直流电压不平衡下的单相级联PWM整流器无锁相环均压控制[J].电网技术,2015,39(4):1167-1172.YANG Tao,SHUAI Zhikang,LAN Zheng,et al.Voltage-sharing Control of Single-phase Cascaded PWM Rectifier without Phase-lock Loop under Unbalanced DC Voltage Condition[J].Power System Technology,2015,39(4):1167-1172.
[17]王立乔,齐飞.级联型多电平变流器新型载波相移SPWM研究[J].中国电机工程学报,2010,30(3):28-34.WANG Liqiao,QI Fei.Novel Carrier Phase-shifted SPWM for Cascade Multilevel Converter[J].Proceedings of the CSEE,2010,30(3):28-34.
[18]王兆安,杨君,刘进军.谐波抑制与无功功率补偿[M].北京:机械工业出版社,2015.
[19]王茂海,刘会金.通用瞬时功率定义及广义谐波理论[J].中国电机工程学报,2001,21(9):68-73.WANG Maohai,LIU Huijin.A Universal Definition of Instantaneous Power and Broad-sense Harmonic Theory[J].Proceedings of the CSEE,2001,21(9):68-73.