Welding power supply device with low impact load

The invention relates to a welding power supply device with low impact load. The welding power supply device comprises a three-phase rectification circuit module and a welding output unit; the welding output unit includes a welding power supply output module, a welding tool, an arc striking auxiliary device, a welding auxiliary device and a thyristor I; and the three-phase rectification circuit module is connected with a three-phase alternating-current power supply. The welding power supply device with low impact load enables the welding tool to obtain arc striking voltage higher than the voltage, of a direct-current power supply, output by the three-phase rectification circuit module through the arc striking auxiliary device, and enables a welding capacitor to output welding current with the welding power supply output module through the welding auxiliary device when the welding tool normally welds, and greatly reduces the impact load of a power grid. 本发明涉及种低冲击负荷的焊接电源装置，包括三相整流电路模块和焊接输出单元，所述的焊接输出单元包括焊接电源输出模块、