Stator-Flux-Oriented Fault-Tolerant Control of Flux-Switching Permanent-Magnet Motors
Stator-Flux-Oriented Fault-Tolerant Control of Flux-Switching Permanent-Magnet Motors
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DOI：
10.1109/tmag.2011.2157106
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发表时间：
2011-09
影响因子：
2.1
通讯作者：
Wenxiang Zhao;M. Cheng;K. Chau;W. Hua;H. Jia;J. Ji;Wenlong Li
中科院分区：
文献类型：
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作者：
Wenxiang Zhao;M. Cheng;K. Chau;W. Hua;H. Jia;J. Ji;Wenlong Li
磁通切换永磁电机是一种新型的定子内装有永磁体的无刷交流电机。提出并实现了一种面向定子磁链的FSPM电机容错控制策略。其关键是使电枢电流的q轴分量在故障前后保持不变。在转子坐标系下，通过建立FSPM电机的SFO-dq方程，推导了FSPM电机的容错控制策略。采用有限元法和场路联合仿真方法对FSPM电机驱动器的性能进行了分析。最后搭建了基于dSPACE的FSPM电机驱动平台进行实验验证。对系统正常运行和容错运行时的稳态和动态性能进行了测试，结果表明，所提出的容错运行方式在保证系统输出转矩不变的同时，还具有良好的动态性能。
Flux-switching permanent-magnet (FSPM) motors are a newly developed brushless AC (BLAC) machine having magnets in the stator. This paper proposes and implements a stator-flux-oriented (SFO) control strategy for fault-tolerant operation of FSPM motors. The key is to set the q-axis component of armature current invariant before and after the fault. In the rotor reference frame, by building a SFO-dq equation of the FSPM motor, the fault-tolerant control strategy is deduced. The finite-element method and the field-circuit cosimulation method are employed to analyze the performance of the FSPM motor drive. Finally, a dSPACE-based FSPM motor drive platform is built for experimental verification. Both the steady-state and dynamic performances at normal and fault-tolerant operations are tested, confirming that the proposed fault-tolerant operation can keep the output torque invariant while offering good dynamic performance during fault.