半周工作单极性双降压式半桥逆变器  

A Novel Half Load Circle Operated Uni-Polarity Dual Buck Inverter

作　　者：孙刚[1] 洪峰[2] 

机构地区：[1]南京信息职业技术学院,江苏南京210046 [2]南京航空航天大学信息科学与技术学院,江苏南京210016

出　　处：《低压电器》2010年第11期53-56,63,共5页Low Voltage Apparatus

基　　金：国家自然科学基金项目资助(50907033);教育部博士点基金项目资助(20093218120023)

摘　　要：提出了一种新颖的单极性双降压式半桥逆变器。该逆变器是在双Buck逆变器基础上增加2个续流桥臂得到,桥臂输出不再是传统半桥型逆变器的两电平双极性调制波,而是直流电压利用率高、谐波含量小的三电平单极性调制波,仅在电感电流较小如过零换向时保留少量双极性调制以维持输出电压波形,因而滤波器体积重量得以减小。由于器件开关损耗和滤波器损耗的降低,单极性双降压半桥逆变器相对双降压式半桥逆变器而言整机效率并没有降低。A novel half-period controlled uni-polarity dual buck inverter was presented.This inverter derived from the traditional dual buck inverter by the add of two fly-wheel branch.Because the bridge output wave become to uni-polarity wave from dual-polarity wave of traditional half bridge inverter,the harmonic contents of output voltage was smaller,so the output filter could be reduced.Half load cycle operating mode of this inverter was presented.Although additional switches and diodes appended to this inverter,the efficiency was high due to the reduce of switching loss and filter loss.

关 键 词：逆变器 多电平 级联控制 

分 类 号：TM464[电气工程—电器]