Title: Stability control for distributed drive electric vehicles confronting differences of phase angle between coaxial motors

Authors: Yueying Zhu; Weiyan Wei; Chao Xing; Chengcong Zhen; Huyi Song

Addresses: College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, 300222, China; Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry and Food Machinery and Equipment, Tianjin, 300222, China ' College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, 300222, China ' College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, 300222, China ' College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, 300222, China ' College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, 300222, China

Abstract: To enhance straight driving stability of distributed drive electric vehicle (DDEV) actuated by switched reluctance motors (SRMs), a stability control strategy for the vehicle confronting wheel torque discordance caused by differences of phase angle (DPA) coming from motors on two sides is proposed in this paper. The potential influence of the DPA between coaxial motors on vehicle stability is studied based on the established SRM and DDEV dynamics models. Then, the stability control strategy eliminating DPA is proposed by introducing feedback control for vehicle yaw rate, after DPA calculator and control selector are designed. Finally, the stability control system including DPA control system, vehicle dynamics model, driver model, and SRM drive system is founded and carried out under conditions of two-wheel and four-wheel driving modes. The co-simulation results prove the stability control strategy can effectively eliminate DPA such that the straight driving stability is greatly enhanced on both driving modes.

Keywords: electric vehicles; vehicle dynamics; torque coordination; stability control; differences of phase angle; wheel torque discordance.

DOI: 10.1504/IJVD.2023.134735

International Journal of Vehicle Design, 2023 Vol.92 No.2/3/4, pp.261 - 277

Received: 04 Apr 2022
Received in revised form: 12 Jul 2022
Accepted: 01 Sep 2022
Published online: 09 Nov 2023 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article