A dual three-phase linear induction motor operating in non-periodic transient conditions driven by two independent energy chains has advantages in power level, power density, freedom degree of control and system redundancy. In this paper, a vector control method is given based on the model of dual three-phase linear induction motor with dynamic end effect. According to the operation characteristics of the non-periodic transient system, an energy chain switching control method under the fault operation condition is proposed, which uses the open-loop calculation of the given thrust as the input of vector control. The proposed method can avoid the coupling of the given current change and the output current peak during the transient processes of system fault. Taking the maximum output thrust constraint with dynamic end effect into consideration, it adjusts the given thrust according to the control target, thereby realizing the safe operation of the single energy chain in case of system failures. Simulation and experimental results verified the correctness and feasibility of the proposed control method.
韩一, 聂子玲, 许金, 朱俊杰, 芮万智. 双三相非周期瞬态直线感应电机能量链切换控制策略[J]. 电工技术学报, 2021, 36(2): 258-267.
Han Yi, Nie Ziling, Xu Jin, Zhu Junjie, Rui Wanzhi. Energy Chain Switching Control of a Dual Three-Phase Linear Induction Motor Operating in Non-Periodic Transient Conditions. Transactions of China Electrotechnical Society, 2021, 36(2): 258-267.
[1] Doyle M, Sulish G, Lebron L.The benefits of electro- magnetically launching aircraft[J]. Naval Engineering Journal, 2000, 112(3): 77-82.
[2] 叶云岳. 直线电机原理与应用[M]. 北京: 机械工业出版社, 2000.
[3] 龙遐令. 直线感应电动机的理论和电磁设计方法[M]. 北京: 科学出版社, 2006.
[4] Duncan J.Linear induction motor-equivalent circuit model[J]. IEE Proceedings, 1983, 130(1): 51-57.
[5] Xu Wei, Zhu Jianguo, Zhang Yongchang, et al.Equivalent circuits for single-sided linear induction motors[J]. IEEE Transactions on Industry Appli- cations, 2010, 6(46): 2410-2423.
[6] Xu Wei, Zhu Jianguo, Zhang Yongchang, et al.An improved equivalent circuit model of a single-sided linear induction motors[J]. IEEE Transactions on Vehicular Technology, 2010, 59(5): 2277-2289.
[7] Xu Wei, Sun Guangong, Wen Guilin.Equivalent circuit derivation and performance analysis of a single-sided linear induction motor based on the winding function theory[J]. IEEE Transactions on Vehicular Technology, 2012, 61(4): 1515-1525.
[8] Hu Dong, Xu Wei, Dian Renjun, et al.Loss minimization control of linear induction motor drive for linear metros[J]. IEEE Transactions on Industrial Electronics, 2018, 65(9): 6870-6880.
[9] Wang Ke, Li Yaohua, Ge Qiongxuan, et al.An improved indirect field-oriented control scheme for linear induction motor traction drives[J]. IEEE Transactions on Industrial Electronics, 2018, 65(12): 9928-9936.
[10] Lü Gong, Zeng Dihui, Zhou Tong.An advanced equivalent circuit model for linear induction motors[J]. IEEE Transactions on Industrial Elec- tronics, 2018, 65(9): 7495-7503.
[11] 马名中, 马伟明, 王公宝, 等. 多定子直线感应电机任务交班控制策略[J]. 电机与控制学报, 2012, 16(3): 1-7.
Ma Mingzhong, Ma Weiming, Wang Gongbao, et al.Assignment alternating strategy of multiple primaries linear induction motor[J]. Electric Machines and Control, 2012, 16(3): 1-7.
[12] 马名中, 马伟明, 范慧丽, 等. 长初级直线感应电机分段供电切换暂态过程[J]. 电机与控制学报, 2015, 19(9): 1-6.
Ma Mingzhong, Ma Weiming, Fan Huili, et al.Switch transient process of section powered long- primary linear induction motor[J]. Electric Machines and Control, 2015, 19(9): 1-6.
[13] Toliyat H A, Lipo T A.Analysis of a concentrated winding induction machine for adjustable speed drive applications-motor analysis[J]. IEEE Transactions on Energy Conversion, 1991, 6(4): 679-683.
[14] Zhao Yifan, Lipo T A.Space vector PWM control of dual three-phase induction machine using vector space decomposition[J]. IEEE Transactions on Indu- stry Applications, 1995, 31: 1100-1109.
[15] Bojoi R, Lazzari M, Profumo F, et al.Digital field- oriented control for dual three-phase induction motor drives[J]. IEEE Transactions on Industry Appli- cations, 2003, 39(3): 752-760.
[16] Bojoi R, Tenconi A, Griva G, et al.Vector control of dual-three-phase induction-motor drives using two current sensors[J]. IEEE Transactions on Industry Applications, 2006, 42(5): 1284-1292.
[17] Che H S, Levi E, Jones M, et al.Current control methods for an asymmetrical six-phase induction motor drive[J]. IEEE Transactions on Power Elec- tronics, 2014, 29(1): 401-417.
[18] 吴一丰, 邓智泉, 王宇, 等. 六相永磁容错磁通切换电机及其单相故障的容错控制[J]. 电工技术学报, 2013, 28(3): 71-79.
Wu Yifeng, Deng Zhiquan, Wang Yu, et al.Six-phase fault-tolerant flux switching permanent magnet motor and control strategy for single-phase fault con- dition[J]. Transactions of China Electrotechnical Society, 2013, 28(3): 71-79.
[19] Tani A, Marri M, Zarri L, et al.Control of multiphase induction motors with an odd number of phases under open circuit phase fault[J]. IEEE Transactions on Power Electronics, 2012, 27(2): 565-577.
[20] Che H S, Duran M J, Levi E, et al.Postfault operation of an asymmetrical six-phase induction machine with single and two isolated neutral points[J]. IEEE Transactions on Power Electronics, 2014, 29(10): 5406-5416.
[21] Betin F, Capolino G A.Shaft positioning for six- phase induction machines with open phases using variable structure control[J]. IEEE Transactions on Industrial Electronics, 2012, 59(6): 2612-2620.
2021, Vol. 36 
