用于电弧超声激励的Buck变换器电压电流尖峰抑制  

Restrain of voltage and current peak in buck converter used for stimulating arc-excited ultrasonic

作　　者：纪圣儒[1] 朱志明[1] 周雪珍[1] 王琳化[1] 

机构地区：[1]清华大学机械工程系,北京100084

出　　处：《电焊机》2007年第2期7-11,共5页Electric Welding Machine

基　　金：国家自然科学基金资助项目(50375080)

摘　　要：分析了应用于电弧超声激励的Buck变换器电压、电流尖峰产生机理,讨论了几种常见的电压电流尖峰抑制措施;提出并设计了一种能够有效抑制电压电流尖峰的Buck变换电路拓扑,PSPICE仿真和实验结果均证明了该电路拓扑的可行性。所介绍的电压电流尖峰抑制措施对于其他电路拓扑也有一定的参考和借鉴。The generating mechanism of voltage and current peak in Buck converter used for stimulating arc-excited ultrasonic is explained briefly,and then several common used measures to restrain the voltage and current peak are discussed in detail.After that, a new topology,which could effectively restrain the voltage and current peak,is proposed and designed.Both of the PSPICE simulation and experimental results prove the feasibility of the proposed new topology.The restrain measures of voltage and current peak introduced in this paper have also referential values for other converter topologies.

关 键 词：寄生电感 二极管反向恢复 电压 电流失峰 电磁干扰 

分 类 号：TP403[自动化与计算机技术]