A Study on Energy-Saving High-Frequency Inverter Welding Machine with Noise Cut Transformer

노이즈 차폐 트랜스로 구성한 에너지 절감형 고주파 인버터 용접기 개발에 대한 연구

The electric arc welding machine with high-frequency inverter is studied in this paper which could make more saving in energy than conventional ones with inherent low efficiency. The inverter circuit has been already adopted to special welding machines such as MIG and TIG for improving operating performances so much. But this adoption has not be applied to conventional ac arc welding machine until now. The proposed technology for higher efficiency is to apply the high frequency inverter, together with noise-cut transformer. Overall output characteristics are investigated in aspect of cost and circuit performance. The proposed system is conducted practical experiments using PWM controller.