适用于带开关电源电焊机的现代IGBT封装概念

Modern IGBT Packaging Concepts for Welding Machines with Switchmode Power Supply

在电焊中,需要可以为小输出电压提供大断续直流电流的电流源。过去,在初级回路中使用带抽头的变压器,在次级回路中使用抽头变换器和功率整流器就足够了。如今,通过采用最先进的快速功率半导体器件,如MOSFET和IGBT,焊接电流精确受控。

In electric welding, current sources are needed that can provide high intermittent DC currents for a small output voltage. While in the past it was enough to use a transformer with taps in the primary circuit,a tap changer and a power rectifier in the secondary circuit,nowadays the welding current is precisely controlled using state-of-the-art, fast-switching power semiconductors such as MOSFETs and IGBTs.