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A zero voltage and zero current soft-switching PWM DC-DC converter with synchronous phase shifting hybrid rectifier

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3 Author(s)
Akamatsu, K. ; Div. of Marine Eng., Kobe Univ., Higashinada, Japan ; Mishima, T. ; Nakaoka, M.

A new prototype of a secondary-side phase shifted (SPS) soft-switching PWM dc-dc converter is presented in this paper. In the proposed dc-dc converter, soft-switching operations are achievable from full to no loads by utilizing the parasitic inductances of the high frequency (HF) transformer. Beside that, no circulating current occurs in both of the primary and secondary side full-bridge circuits, consequently the related idling power can be minimized. The wide-range soft-switching principle is described in details by actual performances oriented the circuit description. The essential performances, steady-state and switching characteristics of the proposed dc-dc converter are originally demonstrated in experiments by a 1kW-50 kHz prototype, and its practical effectiveness is verified.

Published in:

Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth Annual IEEE

Date of Conference:

17-21 March 2013