DocumentCode :
1762502
Title :
MEC-Based Modeling and Sizing of a Tubular Linear PM Synchronous Machine
Author :
Souissi, Amal ; Zouaghi, Mohamed Wael ; Abdennadher, Imen ; Masmoudi, Ahmed
Author_Institution :
Res. Lab. on Renewable Energies & Electr. Vehicles (RELEV), Univ. of Sfax, Sfax, Tunisia
Volume :
51
Issue :
3
fYear :
2015
fDate :
May-June 2015
Firstpage :
2181
Lastpage :
2194
Abstract :
Linear machines are currently considered as viable candidates for direct-drive wave and free-piston energy converters. This paper is devoted to an approach based on a magnetic equivalent circuit (MEC), which is also called lumped circuit, dedicated to the modeling and sizing of a tubular linear permanent-magnet synchronous machine (T-LPMSM). The proposed approach considers, in a first step, the cancelation of the end-effect phenomenon. To do so, a dedicated design procedure, consisting in achieving a $2pi/3$-shift between the armature phase flux linkages by selecting a fractional ratio of the stator pole pitch to the mover one and balancing the amplitudes of the phase flux linkages by extending the stator magnetic circuit with teeth of appropriate dimensions, is firmly applied on two basic T-LPMSM topologies using a dedicated MEC. Then, an investigation of the influent sizing parameters on the force production capability of the initial concept is carried out. The MEC-based prediction of the force requires the incorporation of the mover displacement, yielding the so-called “position varying MEC” on one hand and the armature magnetic reaction on the other hand. The finite-element analysis of the armature phase flux linkages and the developed force enable the validation of the results yielded by the established MECs.
Keywords :
equivalent circuits; finite element analysis; linear machines; machine theory; magnetic circuits; magnetic flux; permanent magnet machines; stators; synchronous machines; T-LPMSM; armature magnetic reaction; armature phase flux linkage; armature phase flux linkage amplitude; direct-drive wave energy converter; end-effect phenomenon; finite-element analysis; force production capability; free-piston energy converter; lumped circuit; position varying MEC; stator magnetic equivalent circuit; stator pole pitch; tubular linear permanent-magnet synchronous machine; Coils; Couplings; Force; Magnetic circuits; Radio frequency; Saturation magnetization; Stators; Armature magnetic reaction; Direct drive wave energy conversion systems,; armature magnetic reaction; developed force; direct-drive wave energy conversion systems; end effect cancelation; end-effect cancelation; finite element analysis; finite-element analysis (FEA); magnetic equivalent circuit; magnetic equivalent circuit (MEC); phase flux linkages; saturation; tubular linear permanent magnet synchronous machines; tubular linear permanent-magnet synchronous machines (T-LPMSMs);
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.2014.2382765
Filename :
6990581
Link To Document :
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