循环叠加斩波式电火花加工脉冲电源节能效果分析

Energy Saving Effect Analyzing of EDM Pulsed Power Supply with Cyclically Superimposed Chopper Circuit

循环叠加斩波式节能电火花加工脉冲电源的主要特点是不含有传统脉冲电源的限流电阻和多数节能脉冲电源使用的储能电感,采用功率开关管不完全导通的方法,通过对每只功率开关管的斩波电流进行循环叠加来产生电火花加工脉冲。分析了该脉冲电源加工主回路的能量损耗计算方法以及试验数据的采集和处理方法,进行了加工对比实验,结果表明该脉冲电源的加工主回路的能量损耗明显低于传统脉冲电源的能量损耗。

The energy saving electrical discharge machining （EDM） pulsed power supply possesses no current-limiting resistors and no energy storage inductors. Many branches of paralleling spike pulse currents chopped by power transistor are combined into the desired pulse current for EDM machining through cyclic superimposition. The method of energy loss calculating and data processing are analyzed. The contrastive machining experiments prove that the new pulsed power supply is capable of performing stable machining with less main-machining-circuit energy loss than those of conventional EDM pulsed power supplies.