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dc.contributor.authorRøkke, Astrid
dc.contributor.authorNilssen, Robert
dc.date.accessioned2018-02-02T08:08:49Z
dc.date.available2018-02-02T08:08:49Z
dc.date.created2017-10-12T14:15:02Z
dc.date.issued2017
dc.identifier.citationIEEE transactions on magnetics. 2017, 53 (4), .nb_NO
dc.identifier.issn0018-9464
dc.identifier.urihttp://hdl.handle.net/11250/2482298
dc.description.abstractMachine design problems are often solved under the assumption of no-load when calculating iron flux densities. However, it is particularly important to account for the fluxes from the stator currents, the armature reaction, in fractional-slot machines. The fluxes from the permanent magnets and the armature reaction both vary in time with the electrical frequency. By studying the flux that flows along the stator yoke behind every slot in such a machine, it is revealed that the armature reaction flux does not have the same amplitude behind all slots. In addition, it is revealed that the time-varying no-load and armature reaction fluxes are shifted in time, with different phase shifts behind different slots. The sum of the no-load and armature reaction fluxes, namely, the load flux, depends on both the amplitudes of the fluxes and the phase shift between them. The resulting load flux behind each slot varies significantly. In four investigated machines, the ratio of the highest to the lowest load flux amplitude ranges between 1.6 and 6. The load flux can be significantly higher than the no-load flux. The flux calculations are verified through finite-element analysis in all four machines, and the error in the maximum load flux ranges between 2% and 6%.nb_NO
dc.language.isoengnb_NO
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)nb_NO
dc.titleAnalytical Calculation of Yoke Flux Patterns in Fractional-Slot Permanent Magnet Machinesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber9nb_NO
dc.source.volume53nb_NO
dc.source.journalIEEE transactions on magneticsnb_NO
dc.source.issue4nb_NO
dc.identifier.doi10.1109/TMAG.2016.2623583
dc.identifier.cristin1504205
dc.description.localcode© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.nb_NO
cristin.unitcode194,63,20,0
cristin.unitnameInstitutt for elkraftteknikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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