五相永磁直线电机开路容错直接推力控制
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摘要
五相永磁直线电机(permanent-magnetlinearmotor,PMLM)具有推力密度大、可靠性高等优点。为了抑制PMLM一相开路故障导致的推力脉动,并提高其开路故障状态下的稳态和动态性能,该文提出一种新型容错直接推力控制(fault-tolerant direct thrust force control,FT-DTFC)策略。在两相静止坐标系中提出虚拟定子磁链,实现故障前后相同的定子磁链与电流轨迹圆。在此基础上,推导补偿电压,结合基于容错电流推导出的降阶正交变换矩阵,解决相开路故障导致电机模型不对称的问题,以建立故障PMLM的对称模型。构建磁链和推力观测器,采用载波脉宽调制技术实现开路故障状态下的直接推力控制。实验结果验证了所提控制策略的有效性。
Five-phase permanent-magnet linear motor(PMLM) has many advantages, such as high thrust force density and high reliability. To restrain the thrust force fluctuations resulted from single-phase open-circuit fault, and to improve the steady-state and dynamic performance of the faulty PMLM, a novel fault-tolerant direct thrust force control(FT-DTFC) strategy was proposed. The virtual stator flux was proposed to achieve the same circular trajectories of current and stator flux vectors in the two-phase stationary frame before and after fault. Then, the compensation voltages were derived based on these. To build a symmetrical PMLM model in fault condition, the reduced-order orthogonal transformation matrix derived from the fault-tolerant currents and the compensation voltages were employed to eliminate the asymmetrical motor behavior caused by open-circuit fault. Finally, the stator flux and thrust force estimators were established, and then the carrier-based pulse width modulation technology was adopted to achieve the DTFC in single-phase open-circuit fault condition. The experimental results demonstrate the feasibility of the proposed strategy.
Five-phase permanent-magnet linear motor(PMLM) has many advantages, such as high thrust force density and high reliability. To restrain the thrust force fluctuations resulted from single-phase open-circuit fault, and to improve the steady-state and dynamic performance of the faulty PMLM, a novel fault-tolerant direct thrust force control(FT-DTFC) strategy was proposed. The virtual stator flux was proposed to achieve the same circular trajectories of current and stator flux vectors in the two-phase stationary frame before and after fault. Then, the compensation voltages were derived based on these. To build a symmetrical PMLM model in fault condition, the reduced-order orthogonal transformation matrix derived from the fault-tolerant currents and the compensation voltages were employed to eliminate the asymmetrical motor behavior caused by open-circuit fault. Finally, the stator flux and thrust force estimators were established, and then the carrier-based pulse width modulation technology was adopted to achieve the DTFC in single-phase open-circuit fault condition. The experimental results demonstrate the feasibility of the proposed strategy.
引文
[1]寇宝泉,罗俊,杨小宝,等.横向磁场磁通反向直线电机的设计与分析[J].中国电机工程学报,2017,37(4):1216-1224.Kou Baoquan,Luo Jun,Yang Xiaobao,et al.Design and analysis of a transverse-flux flux-reversal linear machine[J].Proceedings of the CSEE,2017,37(4):1216-1224(in Chinese).
[2]Hu Hengzai,Liu Xiangdong,Zhao Jing,et al.Analysis and minimization of detent end force in linear permanent magnet synchronous machines[J].IEEE Transactions on Industrial Electronics,2018,65(3):2475-2486.
[3]彭兵,宋得雪,张囡,等.V-型端齿削弱永磁直线电机端部磁阻力波动方法[J].中国电机工程学报,2016,36(14):3940-3946.Peng Bing,Song Dexue,Zhang Nan,et al.An end effect detent force reduction method of V-shaped end teeth in permanent magnet linear motors[J].Proceedings of the CSEE,2016,36(14):3940-3946(in Chinese).
[4]Zhou Huazhou,Lu Zhen,Zhao Wenxiang,et al.Design and analysis of low-cost tubular fault-tolerant interior permanent-magnet motor[J].IEEE Transactions on Magnetics,2016,52(7):1-4.
[5]Xu Yongxiang,Yan Hao,Zou Jibin.A fault-tolerant control strategy for six-phase transverse flux tubular PMLM based on synthetic vector method[J].IEEETransactions on Plasma Science,2015,43(5):1332-1338.
[6]Arafat A K M,Choi S.Optimal phase advance under fault-tolerant control of a five-phase permanent magnet assisted synchronous reluctance motor[J].IEEETransactions on Industrial Electronics,2018,65(4):2915-2924.
[7]於锋,程明,夏子朋,等.3种谐波电流注入模式下的磁通切换永磁电机缺相容错控制[J].中国电机工程学报,2016,36(3):836-844.Yu Feng,Cheng Ming,Xia Zipeng,et al.Fault tolerant control of flux-switching permanent magnet motors with three kinds of harmonic current injections[J].Proceedings of the CSEE,2016,36(3):836-844(in Chinese).
[8]Zhou Huawei,Zhao Wenxiang,Liu Guohai,et al.Remedial field-oriented control of five-phase faulttolerant permanent-magnet motor by using reduced-order transformation matrices[J].IEEE Transactions on Industrial Electronics,2017,64(1):169-178.
[9]Cheng Luming,Sui Yi,Zheng Ping,et al.Implementation of postfault decoupling vector control and mitigation of current ripple for five-phase fault-tolerant PM machine under single-phase open-circuit fault[J].IEEETransactions on Power Electronics,2018,33(10):8623-8636.
[10]薛诚,宋文胜,武雪松,等.考虑去磁效应的五相永磁同步电机优化开关表直接转矩控制算法[J].中国电机工程学报,2017,37(19):5774-5784.Xue Cheng,Song Wensheng,Wu Xuesong,et al.A direct torque control algorithm considering the demagnetization effects for five-phase permanent-magnet synchronous machines using optimized switching table[J].Proceedings of the CSEE,2017,37(19):5774-5784(in Chinese).
[11]Holakooie M H,Ojaghi M,Taheri A.Direct torque control of six-phase induction motor with a novel MRAS-based stator resistance estimator[J].IEEE Transactions on Industrial Electronics,2018,65(10):7685-7696.
[12]周扬忠,程明,陈小剑.基于虚拟变量的六相永磁同步电机缺一相容错型直接转矩控制[J].中国电机工程学报,2015,35(19):5050-5058.Zhou Yangzhong,Cheng Ming,Chen Xiaojian.Atolerated fault direct torque control for six-phase permanent magnet synchronous motor with one opened phase based on fictitious variables[J].Proceedings of the CSEE,2015,35(19):5050-5058(in Chinese).
[13]Bermudez M,Gonzalez-Prieto I,Barrero F,et al.Openphase fault-tolerant direct torque control technique for five-phase induction motor drives[J].IEEE Transactions on Industrial Electronics,2017,64(2):902-911.
[14]耿乙文,鲍宇,王昊,等.六相感应电机直接转矩及容错控制[J].中国电机工程学报,2016,36(21):5947-5956.Geng Yiwen,Bao Yu,Wang Hao,et al.Direct torque and fault tolerant control for six-phase induction motor[J].Proceedings of the CSEE,2016,36(21):5947-5956(in Chinese).
[15]Wang Xueqing,Wang Zheng,Cheng Ming,et al.Remedial strategies of T-NPC three-level asymmetric six-phase PMSM drives based on SVM-DTC[J].IEEETransactions on Industrial Electronics,2017,64(9):6841-6853.
[16]Zhang Li,Fan Ying,Cui Ronghua,et al.Fault-tolerant direct torque control of five-phase FTFSCW-IPM motor based on analogous three-phase SVPWM for electric vehicle applications[J].IEEE Transactions on Vehicular Technology,2018,67(2):910-919.
[17]Sen B,Wang Jiabin.Stationary frame fault-tolerant current control of polyphase permanent-magnet machines under open-circuit and short-circuit faults[J].IEEETransactions on Power Electronics,2016,31(7):4684-4696.
[2]Hu Hengzai,Liu Xiangdong,Zhao Jing,et al.Analysis and minimization of detent end force in linear permanent magnet synchronous machines[J].IEEE Transactions on Industrial Electronics,2018,65(3):2475-2486.
[3]彭兵,宋得雪,张囡,等.V-型端齿削弱永磁直线电机端部磁阻力波动方法[J].中国电机工程学报,2016,36(14):3940-3946.Peng Bing,Song Dexue,Zhang Nan,et al.An end effect detent force reduction method of V-shaped end teeth in permanent magnet linear motors[J].Proceedings of the CSEE,2016,36(14):3940-3946(in Chinese).
[4]Zhou Huazhou,Lu Zhen,Zhao Wenxiang,et al.Design and analysis of low-cost tubular fault-tolerant interior permanent-magnet motor[J].IEEE Transactions on Magnetics,2016,52(7):1-4.
[5]Xu Yongxiang,Yan Hao,Zou Jibin.A fault-tolerant control strategy for six-phase transverse flux tubular PMLM based on synthetic vector method[J].IEEETransactions on Plasma Science,2015,43(5):1332-1338.
[6]Arafat A K M,Choi S.Optimal phase advance under fault-tolerant control of a five-phase permanent magnet assisted synchronous reluctance motor[J].IEEETransactions on Industrial Electronics,2018,65(4):2915-2924.
[7]於锋,程明,夏子朋,等.3种谐波电流注入模式下的磁通切换永磁电机缺相容错控制[J].中国电机工程学报,2016,36(3):836-844.Yu Feng,Cheng Ming,Xia Zipeng,et al.Fault tolerant control of flux-switching permanent magnet motors with three kinds of harmonic current injections[J].Proceedings of the CSEE,2016,36(3):836-844(in Chinese).
[8]Zhou Huawei,Zhao Wenxiang,Liu Guohai,et al.Remedial field-oriented control of five-phase faulttolerant permanent-magnet motor by using reduced-order transformation matrices[J].IEEE Transactions on Industrial Electronics,2017,64(1):169-178.
[9]Cheng Luming,Sui Yi,Zheng Ping,et al.Implementation of postfault decoupling vector control and mitigation of current ripple for five-phase fault-tolerant PM machine under single-phase open-circuit fault[J].IEEETransactions on Power Electronics,2018,33(10):8623-8636.
[10]薛诚,宋文胜,武雪松,等.考虑去磁效应的五相永磁同步电机优化开关表直接转矩控制算法[J].中国电机工程学报,2017,37(19):5774-5784.Xue Cheng,Song Wensheng,Wu Xuesong,et al.A direct torque control algorithm considering the demagnetization effects for five-phase permanent-magnet synchronous machines using optimized switching table[J].Proceedings of the CSEE,2017,37(19):5774-5784(in Chinese).
[11]Holakooie M H,Ojaghi M,Taheri A.Direct torque control of six-phase induction motor with a novel MRAS-based stator resistance estimator[J].IEEE Transactions on Industrial Electronics,2018,65(10):7685-7696.
[12]周扬忠,程明,陈小剑.基于虚拟变量的六相永磁同步电机缺一相容错型直接转矩控制[J].中国电机工程学报,2015,35(19):5050-5058.Zhou Yangzhong,Cheng Ming,Chen Xiaojian.Atolerated fault direct torque control for six-phase permanent magnet synchronous motor with one opened phase based on fictitious variables[J].Proceedings of the CSEE,2015,35(19):5050-5058(in Chinese).
[13]Bermudez M,Gonzalez-Prieto I,Barrero F,et al.Openphase fault-tolerant direct torque control technique for five-phase induction motor drives[J].IEEE Transactions on Industrial Electronics,2017,64(2):902-911.
[14]耿乙文,鲍宇,王昊,等.六相感应电机直接转矩及容错控制[J].中国电机工程学报,2016,36(21):5947-5956.Geng Yiwen,Bao Yu,Wang Hao,et al.Direct torque and fault tolerant control for six-phase induction motor[J].Proceedings of the CSEE,2016,36(21):5947-5956(in Chinese).
[15]Wang Xueqing,Wang Zheng,Cheng Ming,et al.Remedial strategies of T-NPC three-level asymmetric six-phase PMSM drives based on SVM-DTC[J].IEEETransactions on Industrial Electronics,2017,64(9):6841-6853.
[16]Zhang Li,Fan Ying,Cui Ronghua,et al.Fault-tolerant direct torque control of five-phase FTFSCW-IPM motor based on analogous three-phase SVPWM for electric vehicle applications[J].IEEE Transactions on Vehicular Technology,2018,67(2):910-919.
[17]Sen B,Wang Jiabin.Stationary frame fault-tolerant current control of polyphase permanent-magnet machines under open-circuit and short-circuit faults[J].IEEETransactions on Power Electronics,2016,31(7):4684-4696.