Title: Performance enhancement analysis of brushless permanent magnet synchronous machine for electric vehicle

Authors: Bharathi Thangaraj; Ramesh Subramanian

Addresses: Department of Electrical and Electronics Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, 600062, India ' Department of Electrical and Electronics Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, 600062, India

Abstract: This paper considers brushless machine which is already existing in electric vehicle application. The main objective is to reduce the cogging torque and enhance the electromagnetic and thermal performance of brushless permanent magnet synchronous machine (BLPMSM). This can be achieved through optimised stator and rotor design by introducing notches in stator teeth as well as optimising the magnet dimensions in rotor. The electromagnetic analysis of machine is performed using transient 2D with motion solver in MagNet simulation software and the thermal analysis of machine is simulated using ThermNet software. Based on the optimisation results, proposed machine is modelled and simulated for electromagnetic and thermal analysis. Finally the proposed machine is tested with electric vehicle powertrain simulation block sets. The simulation results show that the proposed concept of notching technique along with optimised parameters can be suitable for enhancing the performance of electric vehicles.

Keywords: brushless permanent magnet synchronous machine; cogging torque; drive cycle; electric vehicle simulation; electromagnetic analysis; finite element analysis; notching technique; optimisation; thermal analysis; powertrain simulation.

DOI: 10.1504/IJEHV.2020.110089

International Journal of Electric and Hybrid Vehicles, 2020 Vol.12 No.3, pp.253 - 278

Received: 02 Apr 2020
Accepted: 22 Apr 2020

Published online: 25 Sep 2020 *

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