非正弦反电动势六相永磁同步电机全转矩-速度范围内最小定子铜损和转矩脉动的电流查找表优化
Optimization of Current Lookup Tables for Minimum Stator Copper Loss and Torque Ripple in the Full Torque-Speed Range for a Six-Phase PMSM With Nonsinusoidal Back-EMF
AI总结：
针对非正弦反电动势六相永磁同步电机，通过分析简化和优化生成最小定子铜损及转矩脉动电流参考的方法中的查找表，评估断点选择、构建及插值方法，在减少内存和生成时间的同时保持性能，实现实际应用优化。
AI中文摘要：
最近提出的一种方法能够在具有非正弦反电动势的多相非凸极永磁同步电机的整个转矩-速度范围内生成具有最小定子铜损（SCL）和转矩脉动的电流参考。然而，它依赖于离线生成的大型查找表（LUT），生成需要数小时且存储需要大内存。由于工业数字信号处理器（DSP）的片上内存有限，这阻碍了实际应用。本文以对称六相永磁同步电机驱动为例，通过分析如何简化和优化该方法的LUT来解决此问题。评估了断点选择（BS）、LUT构建（LC）和插值方法，以优化LUT简化与性能之间的权衡。结果表明，所需内存和LUT生成时间可大幅减少，同时保持几乎相同的可行转矩-速度区域和性能。仿真结果证实性能下降可忽略不计。
英文摘要：
A recently proposed method was able to generate current references with minimum stator copper loss (SCL) and torque ripple over the full torque-speed range of multiphase nonsalient permanent-magnet synchronous machines (PMSMs) with nonsinusoidal back-electromotive force (back-EMF). However, it relied on large lookup tables (LUTs) generated offline, requiring several hours for generation and large memory for storage. Since on-chip memory in industrial digital signal processors (DSPs) is limited, this hinders practical implementation. This paper addresses this problem by analyzing how the LUTs of that method can be simplified and optimized, focusing on the example of a symmetrical six-phase PMSM drive. Breakpoint selection (BS), LUT construction (LC), and interpolation approaches are evaluated to optimize the tradeoff between LUT simplification and performance. It is shown that the required memory and LUT generation time can be greatly reduced while keeping nearly the same feasible torque-speed area and performance. Simulation results confirm negligible performance degradation.
