新型并联谐振直流环节零电压开关逆变器  

Novel Parallel Resonant DC Link Zero Voltage Switching Inverter

作　　者：王强[1] 

机构地区：[1]辽宁石油化工大学,信息与控制工程学院,辽宁抚顺113001

出　　处：《电力电子技术》2015年第4期39-41,共3页Power Electronics

基　　金：中国博士后科学基金(2013M531349);江苏省博士后科研资助计划项目(1301105C)~~

摘　　要：此处提出了一种新型的谐振直流环节软开关逆交器。通过在传统硬开关逆变器的直流环节添加辅助谐振单元,实现了逆交桥开关器件的脉宽调制(PWM)软开关动作,同时,辅助谐振单元的开关也为软开关操作,逆变器中的续流二极管和辅助谐振单元中的二极管的反向恢复损耗也减小了。而且开关器件承受的电压都没超过直流电源电压。该软开关逆变器控制简单且不依赖于负载条件,过渡过程所需时间可自由选择。对逆变器工作原理进行了分析,制作了一个10 kw的实验样机,实验结果验证了该软开关逆变器的有效性。A novel resonant DC link soft-switching inverter is proposed, and auxiliary resonant unit is added to DC link of conventional inverter to realize pulse width modulation （PWM） soft-switching operation of all switching devices in inverter.Reverse recovery losses of main diodes and auxiliary diodes are minimized.The voltage across switching de- vices is no higher than DC-souree voltage.In addition, the control is simple and less dependant on load condition, and the time of transition is freely selected.The working principle of the inverter is analyzed.A 10 kW experimental proto- type is built and the experimental results are proposed to confirm validity of the presented soft-switching inverter.

关 键 词：逆变器 谐振直流环节 脉宽调制 

分 类 号：TM464[电气工程—电器]