基于SOC的精密软开关逆变点焊电源  

Precise Soft-switching Resistance Spot Welding Inverter Based on SOC

作　　者：李远波[1] 杨仕桐 郭钟宁[1] 

机构地区：[1]广东工业大学,广东广州510006 [2]广州微点焊设备有限公司,广东广州510385

出　　处：《电力电子技术》2010年第2期74-76,共3页Power Electronics

基　　金：国家自然科学基金资助项目(50775046)~~

摘　　要：研制了一种基于系统芯片(System on Chip,简称SOC)的精密软开关逆变点焊电源,可用于微型工件的点焊。给出了一种采用饱和电感拓宽零电压软开关范围的电路拓扑,并分析了其控制原理;设计了以SOC型C8051F020单片机为核心的双闭环控制电路,给出了系统控制程序流程图。实验结果证明,所研制的精密软开关逆变点焊电源焊接性能优良,响应速度快,控制精度高。A precise soft-switching inverter spot welding power based on SOC for miniature workpiece is introduced.The PS-FB-ZVS topology by adopting saturable inductor to widen soft-switching range is proposed and the control principle is analyzed.The control circuit based on SOC C8051F020 is designed and the system program flow char is presented.The ex-perimental results show that soft-switching inverter spot welding power has fast dynamic responsibility,high accuracy and full range soft-switching.

关 键 词：点焊 电源 软开关 双闭环控制 

分 类 号：TG434.4[金属学及工艺—焊接]