低成本逆变器正弦脉宽调制方法研究

Research of Sinusoidal Pulse Width Modulation on Low Cost Inverter

本文采用一种低成本逆变器实现三相交流异步电机正弦脉宽调制,通过简化传统逆变电路结构,控制产品的生产成本,并在分析三相交流电机和两相电机结构和工作原理的基础上,阐述采用此逆变器实现正弦脉宽调制的原理。实验结果表明该方法是可行的。

In this paper a kind of low cost inverter is adopted to realize three-phase asynchronous motor＇s SPWM. By simplifying the circuit structure of traditional frequency inverter, the cost of product is controlled. And with analyzing three-phase motor and two-phase motor＇ s working principle, explain the method of adopting this inverter circuit realizing SPWM. Results of experiments show that this method is reliable.