Robust Closed-loop Torque Control for PMSM of Railway Traction Considering Demagnetization
Robust Closed-loop Torque Control for PMSM of Railway Traction Considering Demagnetization
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DOI：
10.1109/iecon.2019.8927225
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发表时间：
2019-10
期刊：
影响因子：
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通讯作者：
Kaihui Zhao;Jinhua She;Changfan Zhang;Jing He;Gang Huang;Jianhua Liu
中科院分区：
文献类型：
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作者：
Kaihui Zhao;Jinhua She;Changfan Zhang;Jing He;Gang Huang;Jianhua Liu
为提高轨道车辆永磁同步电机（PMSM）的转矩精度，设计了一种非奇异终端滑模观测器（NTSMO）来检测永磁（PM）的退磁，并提出了一种用于铁路PMSM矢量控制系统的精确转矩控制方法。首先，建立了永磁同步电动机的消磁数学模型。其次，在d-q参照系中构造了一个NTSMO重构磁链；同时，给出了观测器的稳定性证明。根据估计的永磁磁链，可以计算出估计的转矩。最后，在Matlab/Simulink中对整个系统进行了仿真验证。与滑模观测器方法相比，可以提高驱动系统的转矩控制精度，满足和保证轨道车辆的行驶性能。
To improve the torque precision of permanent magnet synchronous motor (PMSM) in railway vehicles, a nonsingular terminal sliding mode observer (NTSMO) is designed to detect permanent-magnet (PM) demagnetization, and a precise torque control method is proposed for the railway PMSM vector control system. First-of-all, the PMSM mathematical model of PM demagnetization is presented. Secondly, a NTSMO is constructed to reconstruction PM flux linkage in $d-q$ reference frame. Meanwhile, the observer stability proof is given. The estimated torque could be calculated according to the estimated PM flux linkage. Finally, the overall system is verified by simulation in Matlab/Simulink. Compared with the sliding mode observer method, the torque control precision of the driving system could be improved, and the driving performance of railway vehicles is fulfilled and guaranteed.