基于EPWM控制的交流稳压电源设计研究

Design Research of AC Stabilized Voltage Supply Based on EPWM Control

本文以交流稳压电源为研究对象。使用单片机控制EPWM（等脉宽调制）高频斩波式电路对市电电压的波动进行补偿，可达到较高的稳压精度，且其电路简单，利用高频斩波和单片机技术还可净化稳压电源的输出，以减少对电网的谐波污染。

The AC regulated power supply is taken as the research object in this paper. A higher stabilized voltage accuracy can be attained by using the single chip microcomputer （SCM） to control the EPWM high-frequency chop-wave circuit for compensating the voltage fluctuation of mains supply, and it has simple circuits, moreover the output of the regulated power supply also can be pu- rified by making use of the technologies of high-frequency chopping and SCM, so that would be able to reduce the harmonic pollution of power grid.