一种基于SPWM的无刷直流电动机驱动新方法  

A New Method of Driving BLDCM Based on SPWM

作　　者：李颖[1] 马瑞卿[1] 刘冠志[1] 谭博[1] 

机构地区：[1]西北工业大学自动化学院,西安710072

出　　处：《微电机》2010年第1期42-45,共4页Micromotors

基　　金：西北工业大学研究生创业种子基金项目

摘　　要：方波驱动的无刷直流电动机转矩脉动较大,而传统正弦波驱动的无刷直流电动机虽然转矩脉动小,但系统控制电路复杂,且需要高分辨率的转子位置传感器。针对具有Hall位置传感器的正弦无刷直流电动机,提出了一种利用三相Hall位置信号,通过软件算法生成六路正弦脉宽调制波来实现正弦波驱动无刷直流电动机的新方法。建模与仿真证明了该方法的在抑制转矩脉动方面的有效性。The torque ripple is large when brushless DC motor （BLDCM） drove by square-wave, and it is weaken when BLDCM drove by sine-wave. While the traditional sine-wave drove BLDCM system not only possesses complex control circuit, but also requires high-resolution rotor position sensor. Directed towards the problems illustrated above, provided a new idea which makes use of three-way Hall position signals and a kind of proper software program to generate six-way sine pulse width modulation （SPWM） waves for sine-wave BLDCM which possesses Hall position sensor, in order to achieve the sine-wave drove brushless DC motor system. Through modeling and simulation, the effectiveness on torque ripple inhibiting of the method is proved.

关 键 词：正弦波驱动 无刷直流电动机 Hall位置信号 正弦脉宽调制 

分 类 号：TM361[电气工程—电机] TP271.4[自动化与计算机技术—检测技术与自动化装置]