Longitudinal end effects in a linear wave power generator
Artikel i vetenskaplig tidskrift, 2020

Even though the magnetic circuit of a linear electric machine is very similar to a rotating electric machine, they diverge in one fundamental property. The linear generator is open in both ends, i.e., the magnetic circuit is non-symmetric. This paper investigates and discusses the drawbacks of this non-symmetric design in a linear permanent magnet generator, installed in a wave energy conversion system. A two-dimensional geometry has been utilized for the numerical calculations in a finite element method simulation tool. The results present an increased cogging force and significant core losses in the translator as consequences of the longitudinal ends in the machine.

Linear permanent magnet generator

Wave energy converter

Magnetic analysis


Boel Ekergård

Högskolan Väst

Mats Leijon

Uppsala universitet

Chalmers, Elektroteknik, Elkraftteknik


1996-1073 (ISSN) 19961073 (eISSN)

Vol. 13 2 327


Teknisk mekanik

Annan fysik

Annan elektroteknik och elektronik



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