Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43597
Title: A novel magnetic-geared tubular linear machine with halbach permanent-magnet arrays for tidal energy conversion
Authors: Ho, SL 
Wang, Q
Niu, S 
Fu, WN 
Keywords: Energy conversion
Finite-element method (FEM)
Halbach permanent magnet (PM)
Tubular linear machine
Issue Date: 2015
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2015, v. 51, no. 11, 7138627 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: This paper proposes a novel magnetic-geared tubular linear machine for tidal and wave energy conversion. The key of the proposed machine is to embed the armature windings into slots adjacent to the modulating segments of a linear magnetic gear (LMG). The compact component designed can serve simultaneously as the modulating poles in the LMG and the armature stator in the generator. When compared with its existing counterparts, the proposed machine has an improved force density and a simpler mechanical structure by virtue of its gearing effect. Moreover, Halbach permanent-magnet (PM) array is used to build up the PM arrays in both the inner mover and outer mover of the LMG, resulting in increase in thrust force density, reduction in cogging force, and high machine efficiency. The working principle of the proposed machine is introduced, and the electromagnetic performance is investigated quantitatively using the time-stepping finite-element method.
URI: http://hdl.handle.net/10397/43597
ISSN: 0018-9464 (print)
1941-0069 (online)
DOI: 10.1109/TMAG.2015.2450720
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