| Title |
Development of Arc Welding Machines DC-DC Converter using A Novel Full-Bridge Soft Switching PWM Inverter |
| Authors |
Soon-Kurl Kwon ; Sang-Pil Mun |
| Keywords |
High Frquency Inverter ; DC-DC Converter ; Soft Swiching PWM |
| Abstract |
This paper presents a new full-bridge soft switching PWM DC-DC converter circuit topology that adding one switcher, one lossless snubber quasi-resonance capacity to power source for general welding machine. This full-bridge soft switching DC-DC converter topology can applicable 600[V] switching device (IGBT)incase of AC 400[V] common power source because the voltage of active switcher is 1/2 of DC bus line voltage. And low voltage hight current output that first coil current is smaller than second coil current in high frequency transformer can be obtained with decreasing path loss in conventional DC bus line switcher. As it operate ZCS/ZVS in full range, high frequency, high efficiency and high output are implemented at low voltage and high DC current switching power supplies. All of this items are got from simulation and the result of experiment. If make up for the weak points of this proposed circuit, it will be used more easily for next generation TIG, MIG and MAG type of arc-welding machine. |