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A new conceptional PWM DC-DC converter with zero-voltage switching incorporating non-controlled saturable reactors

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4 Author(s)
S. Hamada ; Sansha Electr. Manuf. Co., Ltd., Osaka, Japan ; T. Kanazawa ; Y. Ogino ; M. Nakaoka

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

Published in:

Power Electronics Specialists Conference, 1989. PESC '89 Record., 20th Annual IEEE

Date of Conference:

26-29 Jun 1989