基于全响应功率补偿的电压型PWM整流器直接功率控制
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摘要
为提高直流环节的动态响应,抑制功率突变时的母线电压波动,本文在建立双PWM变频调速系统能量平衡数学模型的基础上,将无功电流引入功率调节环,采用输出功率直接反馈,首次提出动态和稳态分步补偿的全响应直接功率控制策略,即以功率为控制量,对稳态所需能量进行实时性补偿,对动态所需能量以n个期望控制周期为单位进行阶段性补偿。实验结果表明,改进后的电压型PWM整流器控制策略显著提高了直流环节的动态响应,且有效抑制直流母线电压波动,实现了对双PWM变频系统能量流动的精确控制和协调性能的提升。
In order to improve the dynamic response of the DC link as well as inhibiting voltage fluctuation on DC link voltage at abrupt change of power, a new type of full response power compensation control strategy based on energy-balance mathematical model of double pulse width modulation(dual-PWM) converter speed regulation system is first presented. The new method introduces reactive current into power regulation loop, and uses the output direct feedback. Full response power compensation can be divided into steady-state energy needed for real-time compensation and dynamic response process of the energy required in n expected control cycle phased compensation based on direct power control(DPC). Experimental results show that this new control strategy of three phase boost type PWM rectifiers has improved the dynamic response of DC link, also effectively inhibited the voltage fluctuation on DC link voltage, and therefore achieved at a coordinate improvement on both the accuracy and performance of energy flow control.
In order to improve the dynamic response of the DC link as well as inhibiting voltage fluctuation on DC link voltage at abrupt change of power, a new type of full response power compensation control strategy based on energy-balance mathematical model of double pulse width modulation(dual-PWM) converter speed regulation system is first presented. The new method introduces reactive current into power regulation loop, and uses the output direct feedback. Full response power compensation can be divided into steady-state energy needed for real-time compensation and dynamic response process of the energy required in n expected control cycle phased compensation based on direct power control(DPC). Experimental results show that this new control strategy of three phase boost type PWM rectifiers has improved the dynamic response of DC link, also effectively inhibited the voltage fluctuation on DC link voltage, and therefore achieved at a coordinate improvement on both the accuracy and performance of energy flow control.
引文
[1]Singh B,Singh B N,Chandra A,et al.A review of three-phase improved power quality AC-DC converters[J].IEEE Transaction on Industrial Electronics,2004,51(3):641-660.
[2]Serpa L,Ponnaluri S,Barbosa P M,et al.A modified direct power control strategy allowing the connection of three-phase inverters to the grid through LCL filters[J].IEEE Transactions on Industry Applications,2007,43(5):1388-1400.
[3]汪万伟,尹华杰,管霖.双闭环矢量控制的电压型PWM整流器参数整定[J].电工技术学报,2010,25(2):67-72.Wang Wanwei,Yin Huajie,Guan Lin.Parameter setting for double closed-loop vector control of voltage source PWM rectifier[J].Transactions of China Electrotechnical Society,2010,25(2):67-72.
[4]王久和,李华德,王立明.电压型PWM整流器直接功率控制系统[J].中国电机工程学报,2006,26(18):54-60.Wang Jiuhe,Li Huade,Wang Liming.Direct power control system of three phase boost type PWM rectifiers[J].Proceedings of the CSEE,2006,26(18):54-60.
[5]姚志垒,肖岚.基于改进DPC-SVM的三相并网逆变器[J].电力系统保护与控制,2013,41(4):142-147.Yao Zhilei,Xiao Lan.Three-phase grid-connected inverters with improved DPC-SVM[J].Power System Protection and Control,2013,41(4):142-147.
[6]张辉,谭国俊,钱苗旺.基于H∞控制与最优跟踪控制相结合的的三相PWM整流器控制策略[J].电工技术学报,2012,27(12):103-108.Zhang Hui,Tan Guojun,Qian Miaowang.Study of three-phase PWM rectifier based on a mixture of H∞control and optimal tracking control[J].Transactions of China Electrotechnical Society,2012,27(12):103-108.
[7]Gu B G,Nam K.A DC link capacitor minimization method through direct capacitor current control[J].IEEE Transactions Industry Application,2006,42(2):573-581.
[8]戴鹏,朱方田,朱荣伍,等.电容电压直接控制的双PWM协调控制策略[J].电工技术学报,2011,26(1):136-141.Dai Peng,Zhu Fangtian,Zhu Rongwu,et al.Direct control of capacitor current for AC-DC-AC PWM converter[J].Transactions of China Electrotechnical Society,2011,26(1):136-141.
[9]Hur N,Jung J,Nam K.A fast dynamic DC-link power-balancing scheme for a PWM converter-inverter system[J].IEEE Transactions on Industrial Electronics,2001,48(4):794-803.
[10]王峰,姜建国.风力发电用双PWM变换器的功率平衡联合控制策略研究[J].中国电机工程学报,2006,26(22):134-139.Wang Feng,Jiang Jianguo.Research of power-balancing combined control scheme for back to back PWM converters used in wind generator[J].Proceedings of the CSEE,2006,26(22):134-139.
[11]张颖超,赵争鸣,冯博,等.三电平双PWM变频器综合控制策略[J].电工技术学报,2011,26(11):25-31.Zhang Yingchao,Zhao Zhengming,Feng Bo,et al.Intergrated control sheme for three-level NPC based dual-PWM converter[J].Transactions of China Electrotechnical Society,2011,26(11):25-31.
[12]张先勇,舒杰.基于无源性理论的双馈风力发电机双PWM变换器协调控制[J].电力系统保护与控制,2010,38(21):184-188.Zhang Xianyong,Shu Jie.Passivity-based co-operation control of dual PWM converters for doubly-fed wind power generator[J].Power System Protection and Control,2010,38(21):184-188.
[13]Malinowski M,Kazmierkowski M P,Hansen S,et al.Virtual-flux-based direct power control of three-phase PWM rectifiers[J].IEEE Transactions on Power Electronics,2001,37(4):1019-1027.
[14]Akagi H,Kanazawa Y,Nabae A.Instantaneous reactive power compensators comprising switching devices without energy storage components[J].IEEE Transactions on Industry Applications,1984,20(3):625-630.
[15]王继东,苏海滨,王玲花,等.基于虚拟磁链直接功率控制的光伏并网逆变器控制策略研究[J].电力系统保护与控制,2009,37(11):70-74.Wang Jidong,Su Haibin,Wang Linghua,et al.Study on grid-connected inverter used in PV generation system based on virtual flux-linkage direct power control[J].Power System Protection and Control,2009,37(11):70-74.
[16]Su Chen.Direct power control of active filter with averaged switching frequency regulation[J].IEEE Transaction on Power Electronics,2008,23(6):2729-2737.
[17]Malinowski M,Jasinski M,Kazmierkowski M P.Simple direct power control of three-phase PWM rectifier using space-vector modulation(DPC-SVM)[J].IEEE Transactions on Industry Applications,2004,51(2):447-454.
[18]邹学渊,王京,张勇军.三电平电压型PWM整流器的SVPWM算法研究[J].电气传动,2010,40(6):28-31.Zou Xueyuan,Wang Jing,Zhang Yongjun.SVPWM algorithm research of three-level voltage-type PWM[J].Electric Drive,2010,40(6):28-31.
[2]Serpa L,Ponnaluri S,Barbosa P M,et al.A modified direct power control strategy allowing the connection of three-phase inverters to the grid through LCL filters[J].IEEE Transactions on Industry Applications,2007,43(5):1388-1400.
[3]汪万伟,尹华杰,管霖.双闭环矢量控制的电压型PWM整流器参数整定[J].电工技术学报,2010,25(2):67-72.Wang Wanwei,Yin Huajie,Guan Lin.Parameter setting for double closed-loop vector control of voltage source PWM rectifier[J].Transactions of China Electrotechnical Society,2010,25(2):67-72.
[4]王久和,李华德,王立明.电压型PWM整流器直接功率控制系统[J].中国电机工程学报,2006,26(18):54-60.Wang Jiuhe,Li Huade,Wang Liming.Direct power control system of three phase boost type PWM rectifiers[J].Proceedings of the CSEE,2006,26(18):54-60.
[5]姚志垒,肖岚.基于改进DPC-SVM的三相并网逆变器[J].电力系统保护与控制,2013,41(4):142-147.Yao Zhilei,Xiao Lan.Three-phase grid-connected inverters with improved DPC-SVM[J].Power System Protection and Control,2013,41(4):142-147.
[6]张辉,谭国俊,钱苗旺.基于H∞控制与最优跟踪控制相结合的的三相PWM整流器控制策略[J].电工技术学报,2012,27(12):103-108.Zhang Hui,Tan Guojun,Qian Miaowang.Study of three-phase PWM rectifier based on a mixture of H∞control and optimal tracking control[J].Transactions of China Electrotechnical Society,2012,27(12):103-108.
[7]Gu B G,Nam K.A DC link capacitor minimization method through direct capacitor current control[J].IEEE Transactions Industry Application,2006,42(2):573-581.
[8]戴鹏,朱方田,朱荣伍,等.电容电压直接控制的双PWM协调控制策略[J].电工技术学报,2011,26(1):136-141.Dai Peng,Zhu Fangtian,Zhu Rongwu,et al.Direct control of capacitor current for AC-DC-AC PWM converter[J].Transactions of China Electrotechnical Society,2011,26(1):136-141.
[9]Hur N,Jung J,Nam K.A fast dynamic DC-link power-balancing scheme for a PWM converter-inverter system[J].IEEE Transactions on Industrial Electronics,2001,48(4):794-803.
[10]王峰,姜建国.风力发电用双PWM变换器的功率平衡联合控制策略研究[J].中国电机工程学报,2006,26(22):134-139.Wang Feng,Jiang Jianguo.Research of power-balancing combined control scheme for back to back PWM converters used in wind generator[J].Proceedings of the CSEE,2006,26(22):134-139.
[11]张颖超,赵争鸣,冯博,等.三电平双PWM变频器综合控制策略[J].电工技术学报,2011,26(11):25-31.Zhang Yingchao,Zhao Zhengming,Feng Bo,et al.Intergrated control sheme for three-level NPC based dual-PWM converter[J].Transactions of China Electrotechnical Society,2011,26(11):25-31.
[12]张先勇,舒杰.基于无源性理论的双馈风力发电机双PWM变换器协调控制[J].电力系统保护与控制,2010,38(21):184-188.Zhang Xianyong,Shu Jie.Passivity-based co-operation control of dual PWM converters for doubly-fed wind power generator[J].Power System Protection and Control,2010,38(21):184-188.
[13]Malinowski M,Kazmierkowski M P,Hansen S,et al.Virtual-flux-based direct power control of three-phase PWM rectifiers[J].IEEE Transactions on Power Electronics,2001,37(4):1019-1027.
[14]Akagi H,Kanazawa Y,Nabae A.Instantaneous reactive power compensators comprising switching devices without energy storage components[J].IEEE Transactions on Industry Applications,1984,20(3):625-630.
[15]王继东,苏海滨,王玲花,等.基于虚拟磁链直接功率控制的光伏并网逆变器控制策略研究[J].电力系统保护与控制,2009,37(11):70-74.Wang Jidong,Su Haibin,Wang Linghua,et al.Study on grid-connected inverter used in PV generation system based on virtual flux-linkage direct power control[J].Power System Protection and Control,2009,37(11):70-74.
[16]Su Chen.Direct power control of active filter with averaged switching frequency regulation[J].IEEE Transaction on Power Electronics,2008,23(6):2729-2737.
[17]Malinowski M,Jasinski M,Kazmierkowski M P.Simple direct power control of three-phase PWM rectifier using space-vector modulation(DPC-SVM)[J].IEEE Transactions on Industry Applications,2004,51(2):447-454.
[18]邹学渊,王京,张勇军.三电平电压型PWM整流器的SVPWM算法研究[J].电气传动,2010,40(6):28-31.Zou Xueyuan,Wang Jing,Zhang Yongjun.SVPWM algorithm research of three-level voltage-type PWM[J].Electric Drive,2010,40(6):28-31.