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

Dae-Young Hong; So-Jeong Kong; Jun-Young Lee

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

Dae-Young Hong

So-Jeong Kong

Jun-Young Lee

Vol. 22, No. 3, pp. 395-405, Mar. 2022

10.1007/s43236-021-00364-z

Battery charger

Full-bridge converter

DC/DC converter

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.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

D. Hong, S. Kong, J. Lee, "Design of a 5.6 kW EV low‑voltage DC/DC converter based on full‑bridge converter with input series output parallel structure," Journal of Power Electronics, vol. 22, no. 3, pp. 395-405, 2022. DOI: 10.1007/s43236-021-00364-z.

[ACM Style]

Dae-Young Hong, So-Jeong Kong, and Jun-Young Lee. 2022. Design of a 5.6 kW EV low‑voltage DC/DC converter based on full‑bridge converter with input series output parallel structure. Journal of Power Electronics, 22, 3, (2022), 395-405. DOI: 10.1007/s43236-021-00364-z.