New Interleaved Current-Fed Resonant Converter With Significantly Reduced High Current Side Output Filter for EV and HEV Applications

• Published in: IEEE transactions on power electronics Vol. 30; no. 8; pp. 4264 - 4271
• Main Authors: Moon, Dongok, Park, Junsung, Choi, Sewan
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-08-2015; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Capacitors; Converters; Current-fed resonant converter; Diodes; Direct current; Electric potential; electric vehicle; Electrical equipment; Electronics; Filters; High current; Hybrid electric vehicles; interleaved; Low voltage; low voltage dc/dc converter; Ripples; RLC circuits; soft switched; Switches; Switching; Switching frequency; Validity; Voltage; Zero current switching; Zero voltage switching; soft switched; Current-fed resonant converter; electric vehicle (EV); interleaved; low-voltage dc/dc converter (LDC)
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2014.2360470

This paper proposes a new interleaved current-fed resonant converter with significantly reduced high current side output filter. The proposed interleaved converter has theoretically zero output filter capacitance, low-input current ripple, ZCS turn-on and turn-off for all switches and diodes, and zero di/dt at turn-off of diodes when operated at load independent points. A two-stage power conversion technique is applied to the interleaved converter for high efficiency under wide voltage range operation. A 2-kW prototype of the proposed low-voltage dc/dc converter for EV and HEV applications is built and tested to verify the validity of the proposed operation.