Design and Performance Analysis of an Outer-Rotor PMaSynRM

Year 2024, Volume: 12 Issue: 1, 148 - 156, 25.03.2024

Burak Yenipınar , Ali Saygın , Yusuf Sönmez , Cemal Yılmaz , Cemil Ocak

https://doi.org/10.29109/gujsc.1393844

Abstract

Permanent magnet synchronous motors (PMSMs) are consciously used as traction motors in electric vehicles (EVs) and hybrid electric vehicles (HEVs). The rotor position (inner-rotor, outer-rotor) and topology of PMSMs significantly impact their torque profile, efficiency, and demagnetization characteristics. This article focuses on designing an outer-rotor permanent-magnet-assisted synchronous reluctance motor (PMaSynRM) under traction motor requirements and investigating its electromagnetic performance using the finite element method (FEM). This study's primary challenge is achieving optimal machine performance, considering high maximum torque and the risk of demagnetization at low levels. The design, derived from analytical calculations, was subjected to Finite Element Method (FEM) analyses. These analyses investigated motor performance in terms of efficiency, the ability to generate torque at different drive currents, and the risk of demagnetization. As a result of the study, the proposed PMaSynRM design was obtained that provides an adequate demagnetization performance even under 300% loading, has a maximum torque exceeding 35 Nm, and achieves an efficiency of 90% at rated conditions.

Keywords

Electric Motor Design, Traction Motor, Outer-Rotor PM Motor, Demagnetization Analysis, Permanent-Magnet-Assisted Synchronous Reluctance Motor

Supporting Institution

Gazi University Scientific Research Projects Coordination Unit (BAP)

Project Number

FDK-2022-7686

Thanks

This work has been supported by Gazi University Scientific Research Projects Coordination Unit (BAP) under grant number FDK-2022-7686.

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