作　　者： ; ; ; ;

机构地区： 北京航空航天大学机械工程及自动化学院

出　　处： 《北京航空航天大学学报》 2014年第11期1531-1536,共6页

摘　　要： 针对150 k V/30 k W电子束焊接高压电源高电压、大功率输出的要求,低压电路采用IGBT(Insulated Gate Bipolar Transistor)逆变隔离直流电源与逆变全桥串联的主电路拓扑,高压电路由3组升压变压器与10倍压整流电路的串联结构并联组成;设计了高压采样电路、束流采样电路,以及双闭环控制电路.基于上述技术,实现了150 k V/30 k W高电压大功率输出.实验结果表明高压加速电源的输出线性度和束流输出线性度较好,同时高压稳定度和束流稳定度均在0.5%左右,能够满足电子束焊接的要求. With the consideration of characteristics of high voltage and high power output of 150 k V /30 k W power supply of electron beam welding( EBW),low-voltage circuit was designed to be composed of insulated gate bipolar transistor( IGBT) isolated DC power supply and full bridge inverter in series,and highvoltage circuit was paralleled by three groups of high-voltage transformer with 10 times voltage doubling rectifier circuit in series. At the same time,high voltage sampling circuit,electron beam current sampling circuit,and dual closed-loop control circuit were proposed. Based on the above technologies,the 150 k V /30 k W electron beam welding power supply was successfully developed. Experimental results show that the linearity of output voltage and output beam current of high-voltage accelerating power supply is excellent,the stability of output voltage and output beam current of high-voltage accelerating power supply is about 0. 5%,which could satisfy the EBW requirements.

关 键 词： 电子束焊接 高压电源 逆变 高频变压器 倍压整流

领　　域： [金属学及工艺]