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Journal cover: COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

ISSN: 0332-1649

Online from: 1982

Subject Area: Electrical & Electronic Engineering

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Losses and efficiency in alternate switched-flux permanent magnet machines


Document Information:
Title:Losses and efficiency in alternate switched-flux permanent magnet machines
Author(s):J.T. Chen, (Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield, UK), Z.Q. Zhu, (Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield, UK)
Citation:J.T. Chen, Z.Q. Zhu, (2012) "Losses and efficiency in alternate switched-flux permanent magnet machines", COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol. 31 Iss: 1, pp.54 - 70
Keywords:Efficiency, Electromagnetism, Flux-switching, Iron loss, Magnet loss, Permanent magnet, Switched flux, Torque
Article type:Research paper
DOI:10.1108/03321641211184823 (Permanent URL)
Publisher:Emerald Group Publishing Limited
Abstract:

Purpose – The purpose of this paper is to compare the performance of conventional, novel E- and C-core switched-flux permanent magnet (SFPM) machines having different combinations of stator and rotor pole numbers, with particular reference to the conductor and magnet eddy current loss and iron loss.

Design/methodology/approach – The electromagnetic performance of the analysed machines is compared using the finite element (FE) analysis.

Findings – Both iron and conductor eddy current losses increase with the rotor pole number, while the 11- and 13-rotor pole machine always exhibit lower magnet eddy current loss than those of the 10- and 14-rotor pole machines, respectively. The E- and C-core machines use half the number and volume of magnets and also exhibit higher efficiency than those of the conventional SFPM machine.

Originality/value – Investigation of the influence of stator and rotor pole combinations on the performances of conventional, novel E- and C-core SFPM machines, include losses and efficiency.



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