A Multi-Functional Integrated Onboard Charger for Dual-Motor Driving EVs

Minghao Tong (), Xiaoqiang Liu, Yudong Chen, Le Sun and Zhiyuan Xu
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Minghao Tong: School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
Xiaoqiang Liu: School of Automation, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, China
Yudong Chen: School of Automation, Nanjing University of Science & Technology, Nanjing 210094, China
Le Sun: School of Automation, Nanjing University of Science & Technology, Nanjing 210094, China
Zhiyuan Xu: School of Electrical Engineering, Southeast University, Nanjing 210018, China

Energies, 2024, vol. 17, issue 21, 1-16

Abstract: In this paper, to achieve versatile, cost-effective charging for dual-motor EVs, a multi-functional integrated onboard charger is constructed using a dual-motor driving system. In the driving mode, a five-phase flux-switching permanent-magnet (FSPM) motor powers the front, while a three-phase FSPM motor drives the rear. While in the charging mode, different topologies are adopted for different application scenarios, such as the single-phase AC charging mode, the three-phase AC charging mode, and the DC charging mode. The five-phase FSPM motor and its inverters serve as a boost-based AC/DC converter in both single-phase and three-phase AC charging modes, transforming grid power to DC. In the DC charging mode, they are reconfigured to function as a buck converter. During the three-phase AC charging mode, the three-phase FSPM motor and its inverters take on the role of a rear-stage buck converter. They function to regulate the rectified DC voltage, ensuring it meets battery charging needs. The performance of the integrated charger is validated through simulation and experiment results.

Keywords: integrated charger; dual-motor system; multi-phase; FSPM (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: 2024
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