A new PSFB converter-based inverter arc welding machine with high power density and high efficiency

Authors : İsmail AKSOY

Pages : 1501-1516

Doi:10.3906/elk-1212-143

View : 13 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, a high-performance single-phase inverter arc welding machine is presented. Power control of the developed welding machine is realized with a high-frequency, phase-shifted full bridge insert ignore into journalissuearticles values(PSFB); pulse-width modulation insert ignore into journalissuearticles values(PWM); converter. The PSFB PWM converter operates with soft switching at no load and full load. There is no need to use a passive snubber in the converter. Welding machine control is implemented with a digital signal processor insert ignore into journalissuearticles values(DSP); and phase-shift PWM IC. By means of the DSP, advanced arc welding functions and protection features such as short-circuit, over-current, and temperature protection are achieved. The current and voltage waveforms given are from an IGBT-based PSFB PWM arc welding machine operating at 75 kHz switching frequency and 160 A output current. The experimental results show that the proposed system has promising feasibility in industrial applications.
Keywords : Arc welding machine, PSFB PWM converter, DC DC converter, soft switching, zero voltage transition, zero voltage switching, IGBT