能馈型高压变频器整流部分的研究  

Study on Rectifier of Regenerative Cascaded Medium-voltage Converter

作　　者：袁超[1] 欧阳红林[1] 

机构地区：[1]湖南大学,湖南长沙410082

出　　处：《电力电子技术》2011年第4期16-18,共3页Power Electronics

基　　金：湖南省科学技术厅科技计划(06CK3005)~~

摘　　要：传统的级联型高压变频器只能电动运行,是电网污染的主要来源之一,为克服此不足,这里提出了一种应用三相PWM整流技术的级联型高压变频器。该变频器采用双闭环控制策略,具有输出电压恒定、单位功率因数运行等特点,可实现电能回馈电网,解决了电网的污染问题。通过实际应用显示,该变频器在降低谐波,抑制直流侧电容两端电压波动等方面有很大的进步,使级联型高压变频器成为真正的绿色变频器。Traditional cascade inverter can only operate in electrical statement.It is the major source of harmonic problem in power system.A regenerative cascaded medium-voltage converter based on the technology of three PWM rectifier is proposed.Dual-loop control is explored.It solves electric network pollution,with unity power factor,steady DC voltage output,bi-directional energy flow.The experimental results show that regenerative cascaded medium-voltage converter could have advantages in making harmonics lower,and can inhibites DC voltage fluctuations,which makes cascaded medium-voltage converter be the green converter really.

关 键 词：变频器 能量回馈 双闭环控制 整流 

分 类 号：TN77[电子电信—电路与系统]