Longitudinal End Effects in a Linear Wave Power Generator

Boel Ekergård and Mats Leijon
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Boel Ekergård: Department of Industrial Economics, Electrical and Mechanical Engineering, University West, 461 86 Trollhättan, Sweden
Mats Leijon: Swedish Centre for Renewable Electric Energy Conversion, Department on Engineering Sciences, Uppsala University, 751 21 Uppsala, Sweden

Energies, 2020, vol. 13, issue 2, 1-11

Abstract: 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.

Keywords: linear permanent magnet generator; magnetic analysis; wave energy converter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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