降低 PWM 整流器开关损耗的控制新方法  

STUDY ON REDUCING SWITCHING LOSSES OF PWM RECTIFIER

作　　者：董晓鹏[1] 王兆安[1] 

机构地区：[1]西安交通大学

出　　处：《电工电能新技术》1998年第4期1-4,共4页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金重点资助项目;国家教委博士点基金

摘　　要：为降低ＰＷＭ整流器的开关频率，本文在整流器的改进周期平均模型基础上，在相电压控制信号中叠加三次方波信号，使得整流器中的开关管有１／３时间不动作。仿真和实验结果证明了本控制策略大大减小了开关损耗，提高了整流器的效率，也减小了散热器的体积。To reduce the switching losses of IGBTs in PWM rectifier,a third order square wave is added to the phase voltage control signal on the basis of the Improved Period Average Model.This new control algorithm leads to no switching in about 1/3 cycle.Simulating and experimental results show that when the algorithm is applied in experiments not only switching loss is decreased,but also the sink size of the is reduced.

关 键 词：PWM整流器 开关频率 整流器 控制策略 

分 类 号：TM461[电气工程—电器]