多功能逆变电焊机的研制  

Study of Manufacture of a Multifunctional Inverter Welding Machine

作　　者：杨春[1] 龙伟[1] 

机构地区：[1]南昌大学,江西南昌330029

出　　处：《电力电子技术》2005年第3期83-85,共3页Power Electronics

摘　　要：介绍了一种集直流钨极氩弧焊、脉冲钨极氩弧焊、手弧焊、空气等离子弧切割4种功能于一体的多功能逆变电焊机,该电焊机以半桥串联谐振逆变理论为基础,以快速晶闸管为逆变器件设计而成。当处于焊接工况时,变压器次级采用全波整流方式,工作电压输出为36V;处于切割工况时,变压器次级采用桥式整流,工作电压输出为100～125V。研制过程中,通过大量实验和测试,验证了快速晶闸管逆变电源数学模型的正确性,得出了逆变电路参数设计的新方法,为逆变电焊机的研制提供了理论依据。A kind of multifunctional welding machine is introduced in this paper.The machine has four functions such as DC TIG welding,pulse TIG welding,Manual Metal Arc (MMA) welding and plasma cutting. The welding machine is based on the theory of hemi-bridge series resonance and taken fast-thyristor as inverter devices. The secondary side of the transformer uses the way of full-wave rectification and the output voltage is 36V,when it is in jointing. And it use bridge type rectifiying and the output voltage is 100～125V,when it is in incision. Plentiful experiments and tests validated the mathematical model of the fast-thyristor inverter power source,and gained the new design methods of inverter circuit parameters,which will provide the theoretic foundation for manufacturing the welding machine.

关 键 词：逆变器 谐振 脉宽调制/快速晶闸管 

分 类 号：TH43[机械工程—机械制造及自动化] TM464[电气工程—电器]