[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.1007/s43236-021-00364-z

Design of a 5.6 kW EV low-voltage DC/DC converter based on full-bridge converter with input series output parallel structure

Hong, Dae‑Young (Department of Electrical Engineering, Myong-Ji University)
Kong, So‑Jeong (Department of Electrical Engineering, Myong-Ji University)
Lee, Jun‑Young (Department of Electrical Engineering, Myong-Ji University)

Publication Information

Journal of Power Electronics / v.22, no.3, 2022 , pp. 395-405 More about this Journal

Abstract

This paper presents a design methodology for electric vehicle low-voltage DC/DC converter circuits with high power capacities and high input voltages. The proposed circuit is based on full-bridge converter with the input series output parallel structure adopting a coupled inductor in the primary side to eliminate the output current deviation even with a large deviation between transformer leakage inductances. It allows the distributed design of magnetic components and rectifiers and provides a good advantage in terms of cost and size of current monitoring devices using cheap and low-rating current sensors despite high output currents. In addition, to improve the efficiencies at medium load ranges, a method to expand ZVS range is suggested through the analysis of ZVS condition. The feasibility is verified through a 5.6 kW prototype implemented with design equations derived from theoretical analysis.

Keywords

Battery charger; Full-bridge converter; DC/DC converter;

Citations & Related Records

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