输出铁磁电感对逆变CO_2焊机工艺性能的影响  

Functions of Output Filter Inductor in CO_2 Gas Shielded Arc Welding Inverteer

作　　者：黄鹏飞[1] 卢振洋[1] 陈树君[1] 殷树言[1] 

机构地区：[1]北京工业大学,北京100022

出　　处：《焊接学报》2000年第2期81-84,共4页Transactions of The China Welding Institution

摘　　要：研究了逆变式CO2 弧焊电源中输出铁磁电感的作用 ,从理论上分析了用电子电抗器取代传统铁磁电抗器的方式 ,并对减小铁磁电感至最小值的约束条件进行了理论分析和试验研究。结果表明 ,铁磁电感在逆变式CO2 焊机中的作用不同于其在传统晶闸管整流焊机中的作用。焊机理想的动特性可以通过选择合适的电子电抗器获得 ,电感对短路峰值电流和燃弧能量影响不大。但是 ,铁磁电感对抑制瞬时短路产生飞溅有重要意义。采用短路初期分频方式可以抑制电流过冲 ,但电感过小 ,回路的时间常数很小 ,在发生瞬时短路分频或燃弧初期有可能导致断弧。The functions of the output filter inductor in inverter CO 2 gas shielded arc welding machine is studied.Based on theory analysis,the method that electronic inductor takes the place of the traditional inductor inductor is given out.Demonstrated by calculation and related experiments,the paper puts out conditions that limit the minimization of filter inductor.the results indicate that the functions of the filter inductor in inverter are different form those in traditional welding machine.Excellent dynamic characteristics can be achieved by using electronic inductor.the filter inductor has little effect on short circuit current or arc energy,but it is important for inhibiting the over current at the beginning of the short circuit which will lead to big spatter.Small inductor will also result in arc going out at the beginning of the short circuit or arc burning.

关 键 词：电子电抗器 铁磁电感 逆变CO2焊机 工艺性能 

分 类 号：TG434.5[金属学及工艺—焊接]