Practical development of half-bridge high frequency PWM inverter-linked DC-DC converter with diode-clamped active edge resonant cells and extended topologies

Three-level phase shift ZVS-PWM DC-DC converter with neutral point clamping diodes and flying capacitor for gas metal arc welding

“…Hisayuki Sugimura (1) , Srawouth Chandhaket (2) , Sang-Pil Mun (1) , Soon-Kurl Kwon (1) , Toshimitsu Doi (3) , Mutsuo Nakaoka (1) (4) (1) Kyungnam University, Masan, Republic of Korea (2) Dept. of Electrical Eng., Walailak University, Thailand (3) Welding & Mechatronics Company, Daihen Corporation, Kobe, Japan (3) Yamaguchi University, Yamaguchi, Japan INTRODUCTION In, recent years, the authors have demonstrated the halfbridge and full-bridge prototype of the high frequency transformer-linked soft-switching PWM DC-DC converters with simple active edge resonant cells (AERCs) in the input buslines of high side and low side rails for gas metal arc welding.…”

“…of Electrical Eng., Walailak University, Thailand (3) Welding & Mechatronics Company, Daihen Corporation, Kobe, Japan (3) Yamaguchi University, Yamaguchi, Japan INTRODUCTION In, recent years, the authors have demonstrated the halfbridge and full-bridge prototype of the high frequency transformer-linked soft-switching PWM DC-DC converters with simple active edge resonant cells (AERCs) in the input buslines of high side and low side rails for gas metal arc welding. These DC-DC converter topologies could basically achieve their high efficiency, high performance and high power density [1]- [4]. These prototypes of soft-switching symmetrical PWM DC-DC high power converter using the latest IGBT power modules has been partially put into practical use for low voltage large current application in industry.…”