基于磁动势平衡分析的多相感应电机容错控制
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摘要
变频器供电的多相感应电机系统中,由电力电子器件损坏造成的绕组开路是一种常见故障,而多相电机系统可以利用其冗余性高等特点,采用容错控制使多相感应电机在出现绕组开路故障时继续平稳运行。本文通过对五相感应电机缺相前后磁动势的对比分析,得到转矩脉动最小时剩余各相绕组中电流必须满足的条件,在此基础上,建立电机缺相后的模型方程,提出基于磁动势平衡分析的容错控制方法。对所提方法分别进行仿真和实验验证。实验结果表明,由于该方法充分考虑了基波和3次谐波之间相耦合带来的影响,可以大大减小缺相后的转矩脉动。
In multi-phase induction motor system driven by converter, the phase-open fault is familiar,which is usually caused by power electronic device damage. Because of the character of high redundancy of the multi-phase motor, it can continue to operate steadily under phase open by tolerant control. By comparative analysis of five-phase induction motor's MMF under normal operation and phase open fault, the condition of the minimum torque pulsation that the residual phase current needs to satisfy is obtained, on this basis, the modeling equations of the motor under phase open are built, and then the tolerant control method based on MMF balance analysis is proposed. Finally, this method is validated by Simulation and platform experiment. And the results indicate that the torque oscillation can be reduced greatly by the proposed method, for which the effect of fundamental and third harmonics coupling is considered adequately.
In multi-phase induction motor system driven by converter, the phase-open fault is familiar,which is usually caused by power electronic device damage. Because of the character of high redundancy of the multi-phase motor, it can continue to operate steadily under phase open by tolerant control. By comparative analysis of five-phase induction motor's MMF under normal operation and phase open fault, the condition of the minimum torque pulsation that the residual phase current needs to satisfy is obtained, on this basis, the modeling equations of the motor under phase open are built, and then the tolerant control method based on MMF balance analysis is proposed. Finally, this method is validated by Simulation and platform experiment. And the results indicate that the torque oscillation can be reduced greatly by the proposed method, for which the effect of fundamental and third harmonics coupling is considered adequately.
引文
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[10]郝振洋,胡育文,黄文新,等.永磁容错电机最优电流直接控制策略[J].中国电机工程学报,2011,31(6):131-137.Hao Zhenyang,Hu Yuwen,Huang Wenxin,et al.Optimal current direct control strategy for fault tolerant permanent magnet motor[J].Proceedings of the CSEE,2011,31(6):131-137.
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[14]朱鹏,张晓锋,乔鸣忠,等.基于双平面同步旋转变换五相感应电机气隙磁场间接矢量控制[J].中国电机工程学报,2013,33(27):112-119.Zhu Peng,Zhang Xiaofeng,Qiao Mingzhong,et al.Tolerant control strategy for five-phase concentrated full-pitch windings induction motor under open phases fault[J].Proceedings of the CSEE,201333(27):112-119.
[2]Abdel-Khalik A S,Masoud M,Williams B.Improved flux pattern with third harmonic injection for multiphase induction machines[J].IEEE Transactions on Power Electronics,2012,27(3):1563-1578.
[3]刘自程,郑泽东,彭凌,等.船舶电力推进中十五相感应电机同轴运行及容错控制策略[J].电工技术学报,2014,29(3):66-73.Liu Zicheng,Zheng Zedong,Peng Ling,et al.Fixed joint double fifteen-phase induction motor control and fault-tolerant control in ship propulsion system[J].Transactions of China Electrotechnical Society,2014,29(3):66-73.
[4]朱鹏,乔鸣忠,张晓锋,等.三次谐波注入对五相感应电机系统运行性能的影响[J].电工技术学报,2016,31(20):102-110.Zhu Peng,Qiao Mingzhong,Zhang Xiaofeng,et al.Analysis of five-phase induction motor system’s operation performance effects with third harmonic current injection[J].Transactions of China Electrotechnical Society,2016,31(20):102-110.
[5]朱鹏,张晓锋,乔鸣忠,等.五相集中整距绕组感应电机缺相容错控制[J].中国电机工程学报,201131(33):131-137.Zhu Peng,Zhang Xiaofeng,Qiao Mingzhong,et al.Tolerant control strategy for five-phase concentrated full-pitch windings induction motor under open phases fault[J].Proceedings of the CSEE,2011,31(33):131-137.
[6]Zhao Y F,Lipo T A.Modeling and control of a multiphase induction machine with structural unbalance part II:field-oriented control and experimental verification[J].IEEE Transactions on Energy Conversion,1996,11(3):578-584.
[7]Mohammadpour A,Parsa L.Global fault-tolerant control technique for multiphase permanent-magnet machines[J].IEEE Transactions on Industry Applications,2015,51(1):178-186.
[8]高闯,赵文祥,吉敬华,等.低谐波双三相永磁同步电机及其容错控制[J].电工技术学报,2016,32(增刊1):124-130.Gao Chuang,Zhao Wenxiang,Ji Jinghua,et al.Low harmonic dual three-phase permanent magnet synchronous motor and fault-tolerant control[J].Transactions of China Electrotechnical Society,2016,32(S1):124-130.
[9]周长攀,杨贵杰,苏健勇,等.基于正常解耦变换的双三相永磁同步电机缺相容错控制策略[J].电工技术学报,2017,32(3):86-96.Zhou Changpan,Yang Guijie,Su Jianyang,et al.The control strategy for dual three-phase PMSM based on decoupling transformation under fault condition Due to open phases[J].Transactions of China Electrotechnical Society,2017,32(3):86-96.
[10]郝振洋,胡育文,黄文新,等.永磁容错电机最优电流直接控制策略[J].中国电机工程学报,2011,31(6):131-137.Hao Zhenyang,Hu Yuwen,Huang Wenxin,et al.Optimal current direct control strategy for fault tolerant permanent magnet motor[J].Proceedings of the CSEE,2011,31(6):131-137.
[11]Shamsi-Nejad M A,Nahid-Mobarakeh B,Pierfederici S,et al.Fault tolerant and minimum loss control of double-star synchronous machines under open phase conditions[J].IEEE Transactions on Industrial Electronics,2011,55(5):1956-1965.
[12]Tani A,Mengoni M,Zarri L,et al.Control of multiphase induction motors with an odd number of phases under open-circuit phase faults[J].IEEE Transactions on Power Electronics,2012,27(2):565-577.
[13]Guzman H,Duran M J,Barrero F,et al.Speed control of five-phase induction motors with integrated openphase fault operation using model-based predictive current control techniques[J].IEEE Transactions on Industrial Electronics,2014,61(9):4474-4484.
[14]朱鹏,张晓锋,乔鸣忠,等.基于双平面同步旋转变换五相感应电机气隙磁场间接矢量控制[J].中国电机工程学报,2013,33(27):112-119.Zhu Peng,Zhang Xiaofeng,Qiao Mingzhong,et al.Tolerant control strategy for five-phase concentrated full-pitch windings induction motor under open phases fault[J].Proceedings of the CSEE,201333(27):112-119.
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