Switching Characteristics Optimization of Two-Phase Interleaved Bidirectional DC/DC for Electric Vehicles

Feng Wang; Yutao Luo; Hongluo Li; Xiaotong Xu

doi:10.3390/en12030378

Energies (Jan 2019)

Switching Characteristics Optimization of Two-Phase Interleaved Bidirectional DC/DC for Electric Vehicles

Feng Wang,
Yutao Luo,
Hongluo Li,
Xiaotong Xu

Affiliations

Feng Wang: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
Yutao Luo: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
Hongluo Li: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
Xiaotong Xu: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China

DOI: https://doi.org/10.3390/en12030378
Journal volume & issue: Vol. 12, no. 3
p. 378

Abstract

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In electric vehicles (EVs), bidirectional DC/DC(Bi-DC/DC) is installed between the battery pack and the DC bus to step up the voltage. In the process of mode switching under step signal, the Bi-DC/DC will be affected by a large current inrush which threatens the safety of the circuit. In this paper, a Bi-DC/DC mode switching method based on the optimized Bézier curve is proposed. The Boost and Buck modes can be switched based on the proposed method with fast and non-overshoot switching performance. The experimental results show that the mode switching can be finished in 4 ms without overshoot based on the optimal switching curve.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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