摘要
Abstract
The power device in three-level rectifier has small voltage stress , less input current harmonic , and better sine degree .The various work condition of combined switch and the working principle of the rectifier are ana -lyzed .The transient direct current control is selected as the current inner control method for the simulation of the sys -tem.In addition, the causes of the three times current harmonic on the net side of the single-phase PWM rectifier is analyzed.And a new type of harmonic suppression method is adopted to restrain the current harmonic .Simulation shows the effectiveness of the new control algorithm in restraining the three times current harmonic , and the total har-monic distortion rate is reduced as well .关键词
单相三电平PWM整流器/特定谐波改善/功率因数Key words
single-phase three-level PWM rectifier/specific harmonic improvement/power factor分类
信息技术与安全科学
