A1 Journal article (refereed), original research

Fault-Tolerant Modular Stator Concentrated Winding Permanent Magnet Machine

Open Access publication

Publication Details
Authors: Petrov Ilya, Di Chong, Lindh Pia, Niemelä Markku, Repo Anna-Kaisa, Pyrhönen Juha
Publisher: Institute of Electrical and Electronics Engineers (IEEE): OAJ / IEEE
Publication year: 2020
Language: English
Related Journal or Series Information: IEEE Access
Volume number: 8
Start page: 7806
End page: 7816
Number of pages: 11
eISSN: 2169-3536
JUFO-Level of this publication: 2
Open Access: Open Access publication


This paper studies a modular permanent magnet synchronous machine (MPMSM) converted from a traditional single-core 24-slot 20-pole tooth-coil winding permanent magnet synchronous machine (TCW PMSM). The performance of the TCW PMSM is compared with the performance of the MPMSM (rearranged from this TCW PMSM) by the finite element method (FEM). It is found that if an electrical machine with a modular structure is designed, the efficiency of the MPMSM may be degraded compared with the conventional structure, especially, if a solid rotor yoke is used. However, the advantages of the proposed MPMSM are related to an option to scale up the machine by applying a certain number of modules, or removing faulty modules (while keeping the healthy modules working). This makes this type of a motor design applicable in certain life-critical applications, or in applications where scaling of the motor power might be needed. As a prototype, a low-power, low-speed generator added to a hook block of a hoist to supply power to measurement electronics is studied.

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Last updated on 2020-23-03 at 12:06