Title :
A new conceptional PWM DC-DC converter with zero-voltage switching incorporating non-controlled saturable reactors
Author :
Hamada, S. ; Kanazawa, T. ; Ogino, Y. ; Nakaoka, M.
Author_Institution :
Sansha Electr. Manuf. Co., Ltd., Osaka, Japan
Abstract :
A constant-frequency, phase-shifted-mode, PWM (pulse-width-modulated) DC-DC power converter is described which incorporates two-stage inverters with high-frequency transformer links and saturable reactors as nonlinear elements. The proposed converter performs efficient zero-voltage switching over a large load range (no limitation for load range) and a wide voltage regulation range. Its steady-state characteristics are evaluated and discussed on the basis of computer simulation and experimental results. The experiments were carried out with a 0.5 kW 500 kHz breadboard, and power conversion efficiency of more than 88% was obtained
Keywords :
digital simulation; invertors; power convertors; power engineering computing; pulse width modulation; reactors (electric); switching; transformers; 0.5 kW; 500 kHz; 88 percent; HF transformer links; computer simulation; phase-shifted-mode PWM DC-DC convertors; saturable reactors; steady-state characteristics; two-stage inverters; voltage regulation; zero-voltage switching; DC-DC power converters; Inductors; Pulse inverters; Pulse transformers; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Switching converters; Voltage control; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1989. PESC '89 Record., 20th Annual IEEE
Conference_Location :
Milwaukee, WI
DOI :
10.1109/PESC.1989.48573
