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Research on a tubular longitudinal flux PM linear generator used for free-piston energy converter
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2007 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 43, no 1, 447-449 p.Article in journal (Refereed) Published
Abstract [en]

The free-piston energy converter (FPEC) is used for a series hybrid electric vehicle scheme, which may have the advantages of high efficiency, compact structure, and reliable operation. The linear generator is an important part in the FPEC, and a tubular longitudinal flux permanent-magnet (PM) linear generator scheme is investigated in this paper. The electromagnetic and thermal properties of the generator are analyzed with commercial software Flux 2D. The generator is optimized from the aspects of material selection and structure optimization. Rare-earth PM material VACODYM 655HR is selected for the permanent magnets, and low-performance low-loss material M235-35A is chosen for the stator lamination. The pole number and machine size are optimized, and the optimum scheme with efficiency of 0.935 and specific power of 1.49 kW/kg is obtained, which meets the requirements of FPEC application.

Place, publisher, year, edition, pages
2007. Vol. 43, no 1, 447-449 p.
Keyword [en]
finite-element method (FEM), free-piston energy converter (FPEC), hybrid electric vehicle (HEV), linear generator
Identifiers
URN: urn:nbn:se:kth:diva-16311ISI: 000243288500078Scopus ID: 2-s2.0-33846187614OAI: oai:DiVA.org:kth-16311DiVA: diva2:334353
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Sadarangani, Chandur
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Electrical Machines and Power Electronics
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