谐振直流环节电流型软开关整流器  

Resonant DC link current source soft-switching rectifier

作　　者：王强[1] 牛博学 王天施[1] 刘晓琴[1] WANG Qiang;NIU Bo-xue;WANG Tian-shi;LIU Xiao-qin(College of Information and Control Engineering,Liaoning Shihua University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学信息与控制工程学院

出　　处：《电机与控制学报》2020年第1期156-164,共9页Electric Machines and Control

基　　金：国家自然科学基金(51207069);辽宁省自然科学基金指导计划项目(20170540586);辽宁石油化工大学国家级科研项目培育基金(2016PY-016)

摘　　要：为降低硬开关整流器开关损耗、提高效率,提出一种谐振直流环节电流型软开关整流器的拓扑结构,其辅助谐振电路与直流母线并联,无辅助器件串联在直流母线上。通过辅助电路的谐振使直流母线电流从整流器桥臂换流到辅助电路的支路上,当流过整流器桥臂上的电流为0时,整流器桥臂上的主开关可以实现零电流开关,同时辅助开关也实现了软开关。依据不同工作模式的电路图,分析电路各个工作模式的工作过程,完成一个工作周期的相平面分析,讨论电路设计规则以及辅助电路损耗与谐振参数之间的关系。实验证明整流器的开关器件完成了软切换。因此,该新型谐振直流环节电流型软开关整流器能处于高效率运行。A resonant DC link current source soft-switching rectifier was proposed to reduce switching loss in hard-switching rectifier and improve the rectifier efficiency.Auxiliary resonant circuit and DC bus was in parallel.DC bus current could move from bridge arm of the rectifier to branch of the auxiliary resonant circuit via resonant of the auxiliary circuit.When current in bridge arm of the rectifier decreased to zero,zero-current operation of main switching devices in rectifier was realized.Auxiliary switching devices could also be operated under soft-switching in the resonant process.According to the circuits under different modes,working process of the circuit were analyzed.The phase-plane in a work period was completed.Design rule and relation between resonant parameters and the loss of auxiliary resonant circuit were discussed.The experimental results verify that soft-switching operation of all switch devices can be realized.Therefore,the soft-switching rectifier presented can work with high-efficiency.

关 键 词：整流器 谐振 软开关 零电流开关 直流母线 桥臂 直流环节 开关损耗 

分 类 号：TM464[电气工程—电器]