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Optimisation of a tubular linear machine with permanent magnets machine with permanent magnets

Optimisation of a tubular linear machine with permanent magnets machine with permanent magnets
Optimisation of a tubular linear machine with permanent magnets machine with permanent magnets
Purpose – The purpose of this paper is to optimise the cost-based performance of a tubular linear generator and to minimise cogging forces. Design/methodology/approach – Optimisation of a tubular linear generator with longitudinal flux topology has been undertaken using a finite element method. The computational models used have been verified experimentally. Findings – The use of an oversized stator linear generator design as opposed to an oversized translator design has the potential to increase the output electromotive force per unit material cost by 25 per cent for slotless iron core topologies and approximately 14 per cent for air core topologies. For cogging force minimisation, optimisation of the length of the stator core is an effective technique for both oversized stator and oversized translator constructions. Comparisons of magnet materials also indicate that the higher cost of rare earth magnets to ferrites is compensated by their superior specific performances. Originality/value – In this paper, a broader range of design parameters than in previous investigations has been optimised for the slotless iron core and air core topologies. The result relating to cogging force reduction and cost savings (in particular) has the potential to make direct drive wave energy extraction a more competitive technology in terms of reliability and cost.
0332-1649
1056-1068
Parel, Thomas
efb564c5-c382-466b-9c65-4d098b217fa7
Rotaru, Mihai D.
c53c5038-2fed-4ace-8fad-9f95d4c95b7e
Sykulski, Jan K.
d6885caf-aaed-4d12-9ef3-46c4c3bbd7fb
Hearn, Grant
78b26887-68c8-4b17-938d-02d10fa66e48
Parel, Thomas
efb564c5-c382-466b-9c65-4d098b217fa7
Rotaru, Mihai D.
c53c5038-2fed-4ace-8fad-9f95d4c95b7e
Sykulski, Jan K.
d6885caf-aaed-4d12-9ef3-46c4c3bbd7fb
Hearn, Grant
78b26887-68c8-4b17-938d-02d10fa66e48

Parel, Thomas, Rotaru, Mihai D., Sykulski, Jan K. and Hearn, Grant (2011) Optimisation of a tubular linear machine with permanent magnets machine with permanent magnets. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 30 (3), 1056-1068.

Record type: Article

Abstract

Purpose – The purpose of this paper is to optimise the cost-based performance of a tubular linear generator and to minimise cogging forces. Design/methodology/approach – Optimisation of a tubular linear generator with longitudinal flux topology has been undertaken using a finite element method. The computational models used have been verified experimentally. Findings – The use of an oversized stator linear generator design as opposed to an oversized translator design has the potential to increase the output electromotive force per unit material cost by 25 per cent for slotless iron core topologies and approximately 14 per cent for air core topologies. For cogging force minimisation, optimisation of the length of the stator core is an effective technique for both oversized stator and oversized translator constructions. Comparisons of magnet materials also indicate that the higher cost of rare earth magnets to ferrites is compensated by their superior specific performances. Originality/value – In this paper, a broader range of design parameters than in previous investigations has been optimised for the slotless iron core and air core topologies. The result relating to cogging force reduction and cost savings (in particular) has the potential to make direct drive wave energy extraction a more competitive technology in terms of reliability and cost.

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Published date: May 2011
Organisations: EEE

Identifiers

Local EPrints ID: 272329
URI: http://eprints.soton.ac.uk/id/eprint/272329
ISSN: 0332-1649
PURE UUID: dbf88052-58ba-410c-b08d-eab0a53feb60
ORCID for Jan K. Sykulski: ORCID iD orcid.org/0000-0001-6392-126X

Catalogue record

Date deposited: 24 May 2011 18:11
Last modified: 07 Oct 2020 02:31

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Contributors

Author: Thomas Parel
Author: Mihai D. Rotaru
Author: Jan K. Sykulski ORCID iD
Author: Grant Hearn

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