Design of a Robust Five-Phase Ferrite-Assisted Synchronous Reluctance Motor With Low Demagnetization and Mechanical Deformation
| Autor: | Sai Sudheer Reddy Bonthu, Akm Arafat, Seungdeog Choi, Md. Zakirul Islam |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
020208 electrical & electronic engineering Demagnetizing field Torque density Energy Engineering and Power Technology Mechanical engineering Fault tolerance 02 engineering and technology Finite element method Traction motor Magnet 0202 electrical engineering electronic engineering information engineering Ferrite (magnet) Torque ripple Electrical and Electronic Engineering |
| Zdroj: | IEEE Transactions on Energy Conversion. 34:722-730 |
| ISSN: | 1558-0059 0885-8969 |
| DOI: | 10.1109/tec.2018.2882780 |
| Popis: | This study presents the design of a robust five-phase ferrite (Fe) permanent-magnet-assisted synchronous reluctance motor (PMaSynRM) to mitigate two major design challenges: irreversible demagnetization and mechanical deformation. Recently, rare-earth magnet-based five-phase PMaSynRMs have been proposed for vehicular applications due to their better fault tolerance, higher torque density, and low torque ripple compared to their three-phase counterparts. However, rare-earth magnets are expensive and, their supplies were disrupted multiple times in past few years. Therefore, to avoid rare-earth magnets in traction motors, this study proposes a five-phase PMaSynRM with Fe magnet. Special attention is paid to avoid irreversible demagnetization and deformation as these are two major concerns in any Fe-based machine. The rotor structure is uniquely optimized with additional geometrical parameters to reduce the risk of irreversible demagnetization. To increase the structural stability of the rotor, optimal center post and weight reduction notches are adopted. The proposed Fe-based five-phase PMaSynRM has been comparatively studied over a rare-earth magnet-based PMaSynRM. The lumped parameter model and finite element model have been utilized for design optimization and performance analysis. Finally, A 3 kW prototype of the proposed five-phase Fe PMaSynRM has been fabricated, experimentally tested, and compared with the benchmark rare-earth PMaSynRM to validate the proposed design and simulations results. |
| Databáze: | OpenAIRE |
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