Development of a double-sided consequent pole linear vernier hybrid permanent-magnet machine for wave energy converters

Almoraya, Ahmed A.; Baker, Nick; Smith, K. J.; Raihan, M. A. H.

doi:10.1109/iemdc.2017.8002157

Cited by 22 publications

(24 citation statements)

References 17 publications

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“…This results in a thicker yoke and bulky end windings for LPPMVMs, and thus, LVHMs exhibit a higher thrust density [154]. In addition, LVHMs adopt a modular structure most of the times [147], [148], [154], [161], so their performance is less affected by the end effect [154]. A detailed comparison between these two machines is done in [154].…”

Section: Vernier Machinesmentioning

confidence: 99%

“…Not only does the proposed machine reduce 25 % of the PM volume, but also the thrust capability of the consequent pole machine is 34 % higher than the one from the original machine. Thrust capabilities of a conventional LVHM and a consequent-pole LVHM are also compared in [161]. In this case, an improvement of 14.3 % is obtained in the thrust density, and the PM volume is 50 % lower.…”

Section: Vernier Machinesmentioning

confidence: 99%

“…Consequent-pole machines (Fig. 14 (b)) are capable of improving the thrust density of LPMSMs [129], [142], [157], [161], [162]. This is achieved because, due to their structure the flux leakage is reduced [157], [161], [162], [174].…”

Section: A Thrust Force Densitymentioning

confidence: 99%

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Linear Machines for Long Stroke Applications—A Review

et al. 2020

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This document reviews the current state of the art in the linear machine technology. First, the recent advancements in linear induction, switched reluctance and permanent magnet machines are presented. The ladder slit secondary configuration is identified as an interesting configuration for linear induction machines. In the case of switched reluctance machines, the mutually-coupled configuration has been found to equate the thrust capability of conventional permanent magnet machines. The capabilities of the so called linear primary permanent magnet, viz. switched-flux, flux-reversal, doubly-salient and vernier machines are presented afterwards. A guide of different options to enhance several characteristics of linear machines is also listed. A qualitative comparison of the capabilities of linear primary permanent magnet machines is given later, where linear vernier and switched-flux machines are identified as the most interesting configurations for long stroke applications. In order to demonstrate the validity of the presented comparison, three machines are selected from the literature, and their capabilities are compared under the same conditions to a conventional linear permanent magnet machine. It is found that the flux-reversal machines suffer from a very poor power factor, whereas the thrust capability of both vernier and switched-flux machines is confirmed. However, the overload capability of these machines is found to be substantially lower than the one from the conventional machine. Finally, some different research topics are identified and suggested for each type of machine.

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Section: Vernier Machinesmentioning

confidence: 99%

Section: Vernier Machinesmentioning

confidence: 99%

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Linear Machines for Long Stroke Applications—A Review

et al. 2020

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“…As reported in [22], a thorough design study has been carried out for the IMCP topology to maximise force for a fixed MMF and magnet mass. For example, Fig.…”

Section: B Imcp Machinementioning

confidence: 99%

Design and Analysis of a Flux-Concentrated Linear Vernier Hybrid Machine With Consequent Poles

Almoraya

Baker

Smith

et al. 2019

IEEE Trans. on Ind. Applicat.

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 Abstract --In low speed applications, variable reluctance permanent magnet machines are often proposed due to their efficient use of magnet material and high torque density. This becomes even more important in large linear applications, where the translator is longer than the stator. Often, however, very low power factors are experienced by this class of machine. This paper proposes a V-shape flux concentrated version of a consequent pole linear Vernier hybrid permanent magnet machine and compares it to a surface mounted magnet variant. Using finite element analysis validated by two laboratory prototypes, it is shown that the flux concentrated version increases the airgap flux density, which potentially leads to an improvement in the force density and efficiency, or can be used to increase the operating power factor.Index Terms--consequent pole, V-shape, Vernier machine, power factor, linear machine, leakage flux.

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“…This paper proposes an alternative solution that combines two recent developments in drive train technology, the magnetic gear (MG) [6] and the consequent pole linear vernier hybrid permanent magnet (CPLVHPM) machine [7]. Both technologies will be discussed in relation to their topologies and potential benefits in wave energy applications.…”

Section: Introductionmentioning

confidence: 99%

Investigation into linear generators with integrated magnetic gear for wave energy power take off

McGilton

Almoraya

Raihan

et al. 2019

J. eng.

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Development of a double-sided consequent pole linear vernier hybrid permanent-magnet machine for wave energy converters

Abstract: Newcastle University ePrints -eprint.ncl.ac.uk Almoraya AA, Baker NJ, Smith KJ, Raihan MAH. Development of a double-sided consequent pole linear vernier hybrid permanent-magnet machine for wave energy converters.

Cited by 22 publications

References 17 publications

Linear Machines for Long Stroke Applications—A Review

Linear Machines for Long Stroke Applications—A Review

Design and Analysis of a Flux-Concentrated Linear Vernier Hybrid Machine With Consequent Poles

Investigation into linear generators with integrated magnetic gear for wave energy power take off

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