Modeling of a Permanent Magnet Linear Generator for Wave-Energy Conversion

Handle URI:
http://hdl.handle.net/10754/598857
Title:
Modeling of a Permanent Magnet Linear Generator for Wave-Energy Conversion
Authors:
Tom, Nathan; Son, Daewoong; Belissen, Valentin; Yeung, Ronald W.
Abstract:
© 2015 by ASME. This paper begins with a brief review of the equation of motion for a generic floating body with modification to incorporate the influence of a power-take-off (PTO) unit. Since the damping coefficient is considered the dominant contribution to the PTO reaction force, the optimum non time-varying values are presented for all frequencies, recovering the well-known impedance-matching principle at the resonance condition of the coupled system. The construction of a laboratory-scale permanent magnet linear generator (PMLG), developed at the University of California at Berkeley, is discussed along with the basic electromagnetic equations used to model its performance. Modeling of the PMLG begins with a lumped magnetic circuit analysis, which provides an analytical solution to predict the magnetic flux available for power conversion. The voltage generated across each phase of the stator, induced by the motion of the armature, provides an estimate for the electromagnetic damping as a function of the applied resistive load. The performance of the PMLG and the validation of the proposed analytical model is completed by a set of dry-bench tests. Results from the bench test showed good agreement with the described electromechanical model, thus providing an analytical solution that can assist in further optimization of the PMLG.
Citation:
Tom N, Son D, Belissen V, Yeung RW (2015) Modeling of a Permanent Magnet Linear Generator for Wave-Energy Conversion. Volume 9: Ocean Renewable Energy. Available: http://dx.doi.org/10.1115/omae2015-42370.
Publisher:
ASME International
Journal:
Volume 9: Ocean Renewable Energy
Issue Date:
31-May-2015
DOI:
10.1115/omae2015-42370
Type:
Conference Paper
Sponsors:
Acknowledgement for partial support is made toKAUST/UC-Berkeley Grant #25478 and to the Office ofNaval Research, under Grant No. N00014-09-1-1086, awardedto the correspondence author, who is also grateful to the supportof the American Bureau of Shipping for an Endowed Chair inOcean Engineering at UC-Berkeley.
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Full metadata record

DC FieldValue Language
dc.contributor.authorTom, Nathanen
dc.contributor.authorSon, Daewoongen
dc.contributor.authorBelissen, Valentinen
dc.contributor.authorYeung, Ronald W.en
dc.date.accessioned2016-02-25T13:42:33Zen
dc.date.available2016-02-25T13:42:33Zen
dc.date.issued2015-05-31en
dc.identifier.citationTom N, Son D, Belissen V, Yeung RW (2015) Modeling of a Permanent Magnet Linear Generator for Wave-Energy Conversion. Volume 9: Ocean Renewable Energy. Available: http://dx.doi.org/10.1115/omae2015-42370.en
dc.identifier.doi10.1115/omae2015-42370en
dc.identifier.urihttp://hdl.handle.net/10754/598857en
dc.description.abstract© 2015 by ASME. This paper begins with a brief review of the equation of motion for a generic floating body with modification to incorporate the influence of a power-take-off (PTO) unit. Since the damping coefficient is considered the dominant contribution to the PTO reaction force, the optimum non time-varying values are presented for all frequencies, recovering the well-known impedance-matching principle at the resonance condition of the coupled system. The construction of a laboratory-scale permanent magnet linear generator (PMLG), developed at the University of California at Berkeley, is discussed along with the basic electromagnetic equations used to model its performance. Modeling of the PMLG begins with a lumped magnetic circuit analysis, which provides an analytical solution to predict the magnetic flux available for power conversion. The voltage generated across each phase of the stator, induced by the motion of the armature, provides an estimate for the electromagnetic damping as a function of the applied resistive load. The performance of the PMLG and the validation of the proposed analytical model is completed by a set of dry-bench tests. Results from the bench test showed good agreement with the described electromechanical model, thus providing an analytical solution that can assist in further optimization of the PMLG.en
dc.description.sponsorshipAcknowledgement for partial support is made toKAUST/UC-Berkeley Grant #25478 and to the Office ofNaval Research, under Grant No. N00014-09-1-1086, awardedto the correspondence author, who is also grateful to the supportof the American Bureau of Shipping for an Endowed Chair inOcean Engineering at UC-Berkeley.en
dc.publisherASME Internationalen
dc.titleModeling of a Permanent Magnet Linear Generator for Wave-Energy Conversionen
dc.typeConference Paperen
dc.identifier.journalVolume 9: Ocean Renewable Energyen
dc.contributor.institutionUC Berkeley, Berkeley, United Statesen
dc.contributor.institutionNational Renewable Energy Laboratory, Golden, United Statesen
dc.contributor.institutionNenuphar Wind, Lille, Franceen
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