Abstract
This paper presents a new soft switchingPWMnon-isolated high step-up boost DC-DC converter embedding an edgeresonant 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 due to ZCS in the freewheeling diode under DCM including CRM operation of input inductor DC current. First of all, detailed operation characteristics and voltage step-up ratio of the proposed soft switching boost DC-DC converter are presented by means of theoretical analysis. For demonstrating the effectiveness of the converter and analysis, a 1[kW]-40[kHz] laboratory prototype is evaluated in experiments, then performances of the converter are discussed from a practical point of view.
