弧焊逆变器中IGBT管的保护分析

Analysis of Protecting IGBT'S in Arc Welding Inverter

本文全面分析了功率开关管在全桥式弧焊逆变器电路中的工作情况，对于工作周期中可能出现的电压、电流峰值等区段的情况作了讨论；结合逆变主电路和IGBT管参数特性，对IGBT管在弧焊逆变器中的使用和保护作了分析，强调了使用时驱动电路的重要作用。最后，以实际使用的IGBT模块的参数表、参数曲线为例，进行参数的具体说明和分析。

This paper overall analyzes the working situation of power switch on complete bridge arcinverter circuit, discusses the situation of voltage and current's peak valve which probale happened inaction cycle. Relating inverter main circuit and IGBT's parameter, it analyzes IGBT's operation andprotection in arc welding inverter, and stresses important affect of driving circuit. Finally, it concreteillustrates and analyzes the parameter such as IGBT's parameter table and curve in using.