Design and Semi-Analytical Optimization of a Brushless Wound Rotor Synchronous Motor for a Battery Electric Vehicle

Demir M. E., Tap A., Ergene L.

2023 International Aegean Conference on Electrical Machines and Power Electronics and 2023 International Conference on Optimization of Electrical and Electronic Equipment, ACEMP-OPTIM 2023, İstanbul, Turkey, 1 - 02 September 2023 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/acemp-optim57845.2023.10287019
  • City: İstanbul
  • Country: Turkey
  • Keywords: battery electric vehicle (BEV), brushless wound rotor synchronous motor (BLWRSM), finite element method (FEM), motor optimization, total harmonic distortion (THD)
  • Istanbul Technical University Affiliated: Yes


This paper details the design and optimization of a brushless wound rotor synchronous motor (BL-WRSM) for a Battery Electric Vehicle (BEV). A cost-effective motor design that minimizes reliance on rare-earth materials is proposed. The project encompasses two stages of optimization: initially, an iterative method is employed to determine the geometric design of the stator and rotor. This design is refined for full-load conditions using Finite Element Method (FEM) simulations. The main focus is to optimize total harmonic distortion (THD) and magnetic flux density distribution through pole shape modification. The paper provides an overview of the design methodology, initial and final motor design, the optimization strategies employed, and the resultant performance enhancements.