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0前言民用逆变焊机因其体较小,操作方便,市场接受度逐步提高。因市电220V输入的特点,一般采用600V/650V规格的IGBT作为逆变主功率器件。IGBT(Insulated Gate Bipolar Transistor)全称为绝缘栅双极晶体管,作为逆变焊机中高频逆变的主要开关器件,其性能的优劣将直接影响焊机整体表现。随着国内工艺水平和设
0 Introduction Civil inverter welding machine because of its smaller, easy to operate, gradually increasing market acceptance. 220V input due to the characteristics of the city, the general use of 600V / 650V IGBT inverter specifications as the main power devices. Insulated Gate Bipolar Transistor (IGBT) is a full name of Insulated Gate Bipolar Transistor (IGBT). As the main switching device of high-frequency inverter in inverter welding machine, its performance will directly affect the overall performance of the welding machine. With the domestic technological level and design