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dc.contributor.authorWang, Wei
dc.contributor.authorNysveen, Arne
dc.contributor.authorMagnusson, Niklas
dc.date.accessioned2020-11-26T12:52:01Z
dc.date.available2020-11-26T12:52:01Z
dc.date.created2020-09-15T10:15:32Z
dc.date.issued2020
dc.identifier.issn0034-6748
dc.identifier.urihttps://hdl.handle.net/11250/2689801
dc.description.abstractConventional standardized power loss measurements for electric steels are performed at flux densities with a single sinusoidal and unidirectional excitation. However, the flux inside electrical steel laminations can deviate significantly from the standard condition, and the loss is sensitive to such deviations of the flux in time and space. In this article, we describe the design and construction of an apparatus for loss measurements under two scenarios: (1) The main flux in the rolling direction is superimposed with flux in either the transverse or normal direction, while varying magnitude and phase angle between two fluxes and (2) the main flux having a dc-bias. The main flux in the rolling direction is generated in a square lamination frame by the current in excitation coils. The transverse and normal direction fluxes are generated by the current in auxiliary excitation coils wound around powder cores. The dc-bias flux is created either by an ac current with a small dc offset in the excitation coils or by a separate coil excited by a dc current. We implement and compare the two dc-bias methods and discuss the commons and differences. Finally, we present experimental results showing the possibilities for loss measurements under the combined action of magnetic flux in different directions and under dc-bias.en_US
dc.language.isoengen_US
dc.publisherAIPen_US
dc.titleApparatus for loss measurements under multidirectional and dc-bias flux in electrical steel laminationsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.source.volume91en_US
dc.source.journalReview of Scientific Instrumentsen_US
dc.identifier.doi10.1063/5.0011076
dc.identifier.cristin1829987
dc.relation.projectNorges forskningsråd: 255178en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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