Rotor Modification of Switched Reluctance Motor to Improve Multiphysics Performance on EV Grade

• Published in: ECS transactions Vol. 107; no. 1; pp. 1797 - 1809
• Main Authors: M, Deepak, G, Janaki, C, Bharatiraja
• Format: Journal Article
• Language: English
• Published: The Electrochemical Society, Inc 24.04.2022
• ISSN: 1938-5862; 1938-6737
• DOI: 10.1149/10701.1797ecst

The magnetless electrical machine Switched Reluctance Motor (SRM) for low-cost Electric Vehicles (EVs) drive. Compared to induction motor and permanent magnet synchronous motor, the SRM has simple steel rotor construction, high reliability, high fault tolerance capability, wide operating frequency range, high constant power speed range, high-temperature operation, and low-cost steel materials. This paper design was carried out for EV grade 1200kg drive optimal duty cycle characteristics, SRM topology optimized the 8/6 geometry rating for 20kW and 2750rpm. The SRM rotor modification comparison performance of torque, efficiency, line current, and power for EVs. The five rotor modifications are rotor round teeth, straight teeth, taper and round teeth, taper and straight teeth, and straight and round rotor teeth are analyzed using the finite element method. The optimized geometry model analyses using JMAG software and compared with all rotor modifications for the improving performance on torque density, operating efficiency, rated power, and speed for EVs.