逆变式弧焊电源的研究与开发  

Research and development of inversion type welding power source

作　　者：李天喆[1] 

机构地区：[1]广州有色金属研究院电器中心,广东广州510651

出　　处：《广东有色金属学报》2005年第4期55-58,共4页Journal of Guangdong Non-Ferrous Metals

摘　　要：所研发的逆变式弧焊电源采用由IGBT构成的半桥式逆变主电路,以实现逆变降压和输出电压调整.控制电路以脉宽调制电路为核心,通过电压给定信号和反馈信号的比较,获得宽度可调的脉冲信号,调节焊接电源的输出,并实现对弧焊逆变器的闭环控制.The researched and developed inversion type arc-welding power source adopt the half bridge-type inversion main circuit that is formed by IGBT, in order to realize inversion step-down and output voltage adjustment. Control circuit is taking pulse wide modulation circuit as core. By comparison of given signal and feedback signal of overvoltage, get the width-adjustable pulse signal for regulating output of welding power source so as to realize the colsed-loop control to arc-welding inverter.

关 键 词：弧焊逆变器 中频交流电 脉宽调制 

分 类 号：TG434[金属学及工艺—焊接]