Title :
Design of protection circuit for arc welding power supply
Author :
Teng, Qing Fang ; Zhang, Wei Zhong ; Zhu, Jian Guo ; Guo, You Guang
Author_Institution :
Dept. of Autom. & Electr. Eng., Lanzhou Jiaotong Univ., Lanzhou, China
Abstract :
The paper discusses the design of protection circuits responsible for the reliability of arc welding power supply. The protection circuits include three parts, and they are soft-start circuit for anti-surge, circuit for eliminating transformer DC bias magnetic field and circuit for transient over-voltage suppression, respectively. The detail calculations about component parameters of these circuits are given. The transformer and the power devices in this paper are regarded as ideal devices. Meanwhile, their losses are neglected. The method can provide certain guide for improving reliability of protection circuit.
Keywords :
arc welding; overvoltage protection; power supply circuits; arc welding power supply; protection circuit; soft-start circuit; transient over-voltage suppression; Capacitors; Inverters; Power supplies; Reliability; Surges; Switches; Welding; DC bias; anti-surge; arc welding power supply; over-voltage suppression; protection circuit; soft-start;
Conference_Titel :
Applied Superconductivity and Electromagnetic Devices (ASEMD), 2011 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-7852-1
DOI :
10.1109/ASEMD.2011.6145108
