AI 中文总结
研究开路故障下对称六相永磁同步电机全转矩-速度范围问题，提出基于查找表的电流参考值生成方法，通过字典序优化及考虑齿槽转矩补偿，降低转矩脉动和铜损，提升可行速度限制。
AI 中文摘要
本文提出了一种基于查找表（LUT）的电流参考值生成方法，用于开路故障下具有非正弦反电动势的星形连接对称六相无凸极永磁同步电机。离线计算所有健康相的傅里叶系数，以实现不平衡的非正弦电流。通过字典序优化，在转矩、零电流和、峰值电流、峰值电压和转矩脉动约束下，使转矩脉动和铜损最小。考虑齿槽转矩进行补偿。仿真显示可行速度限制更高：低转矩时约高30%，沿示例负载曲线高23%。有限元分析表明，齿槽转矩补偿使转矩脉动峰峰值降低77%。
英文摘要
Current-reference generation based on lookup tables (LUTs) is here proposed for star-connected symmetrical six-phase nonsalient PMSMs with nonsinusoidal back-EMF under an open-phase fault. Fourier coefficients for all healthy phases are computed offline, enabling unbalanced nonsinusoidal currents. A lexicographic optimization minimizes torque ripple and then copper loss, subject to torque, zero-current-sum, peak-current, peak-voltage, and torque-ripple constraints. Cogging torque can be included for compensation. Simulations show a higher feasible speed limit: about 30% at low torque and 23% along an example load curve. Finite-element analysis shows a 77% reduction in peak-to-peak torque ripple with cogging-torque compensation.
Journal refProceedings of IEEE IECON 2026
