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A new high step-up soft switching PWM boost DC-DC converter with edge-resonant switched capacitor modular

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3 Author(s)
Mishima, T. ; Grad. Sch. of Maritime Sci., Kobe Univ., Kobe, Japan ; Takeuchi, Y. ; Nakaoka, M.

This paper presents a new soft switching PWM non-isolated boost DC-DC converter embedding an edge resonant switched capacitor (ER-SWC) modular. The DC DC converter treated here can achieve a high frequency ZCS turn-on and ZVS turn-off operations in active switches and minimization of a reverse recovering current in the freewheeling diode under DCM including CRM in the input current. Those advantageous properties enable a wide range of soft switching operations achievable together with a high step-up voltage conversion ratio. For demonstrating the effectiveness of the new soft switching PWM boost DC-DC converter, a 1 kW-40 kHz laboratory prototype is evaluated in experiments, then performances of the proposed soft switching PWM boost DC-DC converter are discussed from a practical point of view.

Published in:

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Date of Conference:

May 30 2011-June 3 2011