Partial Stray Inductance Modeling and Measuring of Asymmetrical Parallel Branches on the Bus-Bar of Electric Vehicles

Chengfei Geng, Fengyou He, Jingwei Zhang and Hongsheng Hu
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Chengfei Geng: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Fengyou He: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Jingwei Zhang: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Hongsheng Hu: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China

Energies, 2017, vol. 10, issue 10, 1-16

Abstract: In order to increase the power rating of electric vehicles, insulated gate bipolar translator (IGBT) modules with multiple power terminals are usually adopted. The transient current sharing of the same polarity power terminals is related to the stray inductance in the branches of the bus-bar. Based on the laminated bus-bar of a three-phase inverter in the electric vehicles that consists of asymmetrical parallel branches, this paper investigates the transient current imbalance sharing caused by the asymmetrical stray inductance in the parallel branches of the bus-bar from the view of energy storing and releasing of stray inductance for the first time. Besides, the partial self-inductance and mutual-inductance model of the parallel branches is set up. Finally, a high-precision partial stray inductance measurement method is proposed, and the accuracy of the partial stray inductance model for asymmetrical parallel branches is verified by experimental tests.

Keywords: laminated bus-bar; electric vehicles; partial self-inductance; partial mutual inductance; asymmetrical branches (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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