基于80C196KC的软开关型脉冲MIG焊机的研究  

Research on Soft-switching Pulse MIG Welder Based on the 80C196KC

作　　者：陈涛[1] 陈克选[1] 李述辉[1] 

机构地区：[1]兰州理工大学,材料科学与工程学院,甘肃兰州730050

出　　处：《电力电子技术》2012年第3期15-17,共3页Power Electronics

摘　　要：根据脉冲MIG(Metal Inert Gas)焊工艺特点,设计了基于80C196KC控制的软开关型脉冲MIG焊机。采用单片机80C196KC作为控制系统的核心,主电路采用软开关式全桥逆变结构,功率开关器件为绝缘栅双极晶体管(IGBT),逆变频率为20 kHz。采用PI算法实现恒流外特性,脉冲MIG焊接电源获得了电流频率、电流幅值、峰值基值导通比均可以独立调节的波形。试验表明脉冲MIG焊接电源控制系统运行稳定、可靠。According to the technological trait of pulse MIG welding,the soft-switching pulse MIG welder based on the 80C196KC is designed.The single chip microcomputer-80C196KC is chosen as the core of the control system.Main cir-cuit adopts a soft-switching and full-bridge inverter configuration.The switching components are IGBTs.Adopting PI algo-rithm to obtain constant current output characteristics,pulse MIG power source gains wave whose current frequency,amplitude,peak/base ratio can be adjusted separately.Tests show that pulse MIG power source runs stably and reliably.

关 键 词：焊机 软开关 逆变 比例积分控制 

分 类 号：TG434[金属学及工艺—焊接]