中文摘要：

针对六相永磁同步发电机一相开路后的3次谐波影响，建立了扩展的六相静止坐标变换阵，并根据该矩阵和旋转坐标变换阵建立了电压和转矩数学模型，并且分析了经过扩展变换阵变换后的电压方程中d—q子空间的耦合关系，提出了消除解耦后d～q轴电压耦合的2次旋转坐标变换阵。考虑到3次谐波磁链和电感对六相永磁同步发电机容错模式下的电压和转矩的影响，提出了基于定子铜耗最小约束下的闭环控制策略，针对电压和转矩中的3次谐波扰动，推导了闭环控制中的谐波补偿表达式。仿真和实验验证了提出的补偿控制策略对3次谐波影响消除有效性，明显改善了容错控制策略在单相开路后的性能。

英文摘要：

For the serious third harmonic effect in one phase opening mode of six-phase permanent magnet synchronous generator（ SP-PMSG）, an extended stationary transformation matrix is established. Accord- ing to this matrix and rotational frame matrix, the model of voltage and torque was established, and the second rotational frame transformation was proposed for eliminating the coupling relationship of d-q volt- age. To eliminate the third harmonic effect in closed loop control of SP-PMSG fault-tolerant mode, ac- cording to the stator copper loss minimum （SCLM） constrained condition, an offline calculated compen- sation voltage compensation expression was deduced. Simulation and experiments validate the effective- ness of the proposed compensation control strategy, and improve the performance of SP-PMSG in post- fault application.