Examination of Motor Model Considering Magnetic Interaction of Axial-Flux SR Motor for Compact EV

• Published in: Transaction of the Magnetics Society of Japan Special Issues Vol. 9; no. 1; pp. 55 - 59
• Main Authors: Nagasawa, S., Nakamura, K.
• Format: Journal Article
• Language: Japanese
• Published: The Magnetics Society of Japan 01.05.2025; 公益社団法人 日本磁気学会
• Subjects: Axial-flux switched reluctance motor (AFSRM); Electric vehicle (EV); In-wheel motor; Magnetic interaction; Torque control
• ISSN: 2432-0471
• DOI: 10.20819/msjtmsj.25TR911

  Switched reluctance (SR) motors are robust and inexpensive since they consist only of iron cores and windings. Therefore, SR motors can be a potential candidate for in-wheel motors of electric vehicles (EVs). In previous papers, axial-flux switched reluctance motors (AFSRMs) for a compact EV were prototyped, and novel control methods, called variable commutation period control and average torque control, were also proposed. Both control methods can expand the torque-speed range, especially in high-speed regions. However, a previous motor model of the AFSRM cannot replicate both control methods and contains errors compared to measured values due to magnetic interaction. This paper presents an improved motor model that takes magnetic interaction into account.