永磁式无刷直流电动机调速性能分析与优化

Characteristic Analysis and Optimization for Permanent Magnet Brushless DC Motors

介绍了ＰＷＭ电压型逆变器供电的无刷直流电动机方案，永磁式同步电动机的基本方程；ＰＷＭ电压型逆变器输出电压公式；无刷直流电动机的电流和转矩；电动机的机械特性和效率特性；用单片机实现的无刷直流电动机特性的优化控制。

This paper introduces a brushless DC motor system,wihich is composed of a PWM voltage fed invertor and a synchronous device.It presents the basic equations for permanent magnet synchronous device,the output voltage equations for PWM voltage invertor,the circuit current and torque equations of a brushless DC motor and its mechanical characteristics and efficiency features.Finally,the optimum control for the brushless DC motor has been achieved by using microprocessors.