Device for supplying energy to electric network by electric welder

A device for feeding electric energy from electric welder to electric power network is disclosed. When an electric welder is used to perform analog load experiment or welding experiment, a lot of electric energy is consumed. Said device can transform the output of DC electrid welder to proper voltage via inverter or the output of AC one to proper voltage via rectifier and inverter. Said proper voltage is then fed to electric power network via active inverter. 本发明属于电子技术领域，电焊机进行模拟负载试验和焊接试验需要消耗大量电能。本发明是把直流电焊机的输出经过逆变电路变成合适的电压，交流电焊机经整流后再逆变成合适的电压，经过有源逆变电路把电能馈送给电网，可以减少耗电量。