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

Feng Wang, Yutao Luo, Hongluo Li and Xiaotong Xu
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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

Energies, 2019, vol. 12, issue 3, 1-14

Abstract: 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.

Keywords: Bi-DC/DC; switching characteristics; MOPSO (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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