摘要
简要介绍逆变点焊机的原理，分析微型点焊机电源中功率开关元件IGBT的过电压、过电流、过热等保护措施，分析如何避免逆变器的直通现象和合闸浪涌电流的消除。试验证明保护电路提高了逆变点焊机的可靠性。
This article has given a brief account of the principle of spot welding inverter. It has mainly analyzed measures for over current protection,over voltage protection and over heat protection in the micro-spot welding inverter. It also has analyzed how to avoid the phenomenon of direct open in spot welding inverter and surge current in the rectifier. It has been proved in practice that protecting circuits can improve the stability of spot welding inverter.
出处
《上海工程技术大学学报》
CAS
1997年第4期43-47,共5页
Journal of Shanghai University of Engineering Science
基金
上海市高等学校青年科学基金
关键词
保护电路
微型
点焊机
IGBT逆变
Protection circuits Micro-type Spot welding machines IGBT inverter
