三相方波无刷直流电动机PWM的电路设计与实现

A PWM circuit design for three-phase square-wave voltage BDCM and its application

分析了永磁无刷直流电动机驱动装置的基本结构和主要特征,详细介绍了一种模拟控制的集成电路,实现了高效三相方波电机脉宽调制(PWM)控制,可灵活调整PWM死区时间,安全可靠。采用智能功率模块(IPM)放大PWM波驱动伺服电机,进一步提供了系统的集成度。实验结果表明,该控制系统性能良好。

In this paper, the basic structure and main character of Permanent Magnet Brashless DC Motor（BDCM） is analyzed, and an analog integrate circuit to control the motor is introduced in detail. A high efficiency three - phase square - wave voltage Pulse Width Modulation （PWM） /s gained, and the dead time of PWM can be set conveniently, which makes the system safely and reliable. Intelligent Power Module （ IPM） amplifies the PWM wave to drive the motor, which improves the integrated level of the system further. The experiment result confirms the high performance of the control system.