针对表贴式双三相永磁同步电机的开路故障问题，提出了一种基于电流优化的容错控制方案。首先根据基本的Park变换，推导出一种可实现定子电感解耦的坐标变换矩阵。建立了一相开路故障下的数学模型，分析出定子电流中的谐波分量是造成转矩脉动的原因，将开路故障下的容错控制问题转换为d、q轴参考电流的多目标优化问题。其次针对传统的灰狼优化算法初始种群分布不均匀、易陷入局部最优的缺点，提出了一种Kent映射-粒子群-灰狼优化算法，实现故障状态下对电流参数的快速精确寻优，获得最大平均转矩的同时使转矩脉动最小化。最后，仿真结果验证了所提方法的有效性。

Aiming at the open-circuit fault of surface-mount dual three-phase permanent magnet synchronous motora fault-tolerant control scheme based on current optimization is proposed. Firstlyaccording to the basic Park transformationa coordinate transformation matrix that can realize the decoupling of stator inductance is deduced. A mathematical model under one-phase open-circuit fault is establishedand it is analyzed that the harmonic component of stator current is the cause of torque rippleand the fault-tolerant control problem under open-circuit fault is transformed into a multi-objective optimization problem of the d-q axis reference currents. Secondlyaiming at the shortcomings of the traditional gray wolf optimization algorithmsuch as uneven initial population distribution and the tendency to fall into local optimizationa Kent mapping-particle swarm-gray wolf optimization algorithm is proposed to realize the rapid and accurate optimization of current parameters in fault stateand obtain the maximum average torque while minimizing the torque ripple. Finallythe simulation results verify the effectiveness of the proposed method.

国家自然科学基金项目(51876089)；南京航空航天大学科研与实践创新计划(xcxjh20210204)