方波电动机宽调速比控制技术研究

Research on Wide Speed Regulation Method Based on Square Wave BLDCM

本文就方波无刷直流电动机(BLDCM)的低速脉动性能进行了分析,介绍了一种方波无刷直流电动机宽调速控制方法及主功率电路拓扑工作原理,并给出了转速闭环控制电路,并讨论了影响无刷直流电动机宽调速控制的几个原因。

This paper analyzes the low speed ripple performance of square-wave brushless DC motor(BLDCM),and introduces the method of a novel wide speed regulation and the principle of main power-converter topology about BLDCM. The speed close-loop control circuits are given, and few problems of influencing wide speed regulation of BLDCM are also discussed.