恒频电流跟踪PWM AC/DC变流器基准正弦电路的设计

Design of a reference sinusoidal circuit of the PWM AC/DC converter with fixed switching frequency

基准正弦电路对恒频电流跟踪PWM AC/DC变流器的可靠工作起着极其重要的作用。本文研究了一种采用数字化技术,实现与电网电压同步的基准正弦电路的原理,给出了电路关键参数的设计原则。电路简单实用,在实际应用中取得了良好的使用效果。

It is important that the reference sinusoidal circuit in ensuring reliable operation of PWM AC/DC converter with fixed switching frequency.A reference sinusoidal circuit based on digital technique and synchronous with the line voltage is investigated.The design principle of the key circuit parameters is given.The circuit is simple and practical,a good effect is obtained in practice.