Deploying SiC BJTs in an 800-V switched-mode power supply for hybrid & electric vehicles

Hopkins, Andrew and McNeill, Neville and Drury, William D. and Atkins, Andrew; (2017) Deploying SiC BJTs in an 800-V switched-mode power supply for hybrid & electric vehicles. In: 2017 IEEE 26th International Symposium on Industrial Electronics (ISIE). IEEE, Piscataway, NJ, pp. 1431-1438. ISBN 9781509014125 (https://doi.org/10.1109/ISIE.2017.8001456)

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Abstract

An SMPS for hybrid electric vehicle and electric vehicle applications is presented. The use of SiC BJTs in the primary-side switching circuitry is investigated. Practical deployment aspects are addressed. Particular attention is given to the design of the BJT base driver stage and a bespoke turn-on switching-aid circuit. Mathematical design calculations are not presented, but the proposed circuitry is demonstrated in a 1-kW isolated-output DC-DC converter operating from 800 V and supplying 48 V at a switching frequency of 60 kHz. Full-load efficiency was evaluated at 93.3% using a calorimeter.

ORCID iDs

Hopkins, Andrew, McNeill, Neville, Drury, William D. ORCID logoORCID: https://orcid.org/0009-0006-8944-1954 and Atkins, Andrew;
CORE (COnnecting REpositories)