Optimization and Model Validation of Operation Control Strategies for a Novel Dual-Motor Coupling-Propulsion Pure Electric Vehicle

Jianjun Hu, Lingling Zheng, Meixia Jia, Yi Zhang and Tao Pang
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Jianjun Hu: State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
Lingling Zheng: College of Automotive Engineering, Chongqing University, Chongqing 400044, China
Meixia Jia: College of Automotive Engineering, Chongqing University, Chongqing 400044, China
Yi Zhang: College of Engineering and Computer Science, University of Michigan-Dearborn, Dearborn, MI 48128, USA
Tao Pang: College of Automotive Engineering, Chongqing University, Chongqing 400044, China

Energies, 2018, vol. 11, issue 4, 1-14

Abstract: The strict operational condition of driving motors for vehicles propels the development of more complicated configurations in pure electric vehicles (PEVs). Multi-power-source powertrain configurations are one of the efficient technologies to reduce the manufacturing difficulty of driving motors. However, most of the existing studies are predominantly focused on optimal designs of powertrains and power distribution between the engine and motor of hybrid electric vehicles, which are not appropriate for PEVs. This paper proposes a novel dual-motor coupling-propulsion powertrain system that improves the dynamic and economic performance of the powertrain system in PEVs. The proposed powertrain system can realize both the single-motor driving mode and dual-motor coupling driving mode. The driving modes are divided and a power distribution strategy for the different driving modes based on an optimal system efficiency rule is employed, which enhances the performance of the proposed system. Further, a mode-switching strategy that ensures driving comfort by preventing jerk during mode switching is incorporated into the system. The results of comparative evaluations that were conducted using a dual-motor electric vehicle model implemented in MATLAB/Simulink, indicate that the mileage and dynamic performance of the proposed powertrain system are significantly better than those of the traditional single-motor powertrain system.

Keywords: dual-motor pure electric vehicle; coupling-propulsion powertrain; mode division; power distribution; mode switch (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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