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.
出处
《电力电子技术》
CSCD
北大核心
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)~~
关键词
变频器
能量回馈
双闭环控制
整流
converter
regenerative
dual-loop control
rectify
