Cristin-resultat-ID: 1829987
Sist endret: 19. januar 2021, 12:44
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

Apparatus for loss measurements under multidirectional and dc-bias flux in electrical steel laminations

Bidragsytere:
  • Wei Wang
  • Arne Nysveen og
  • Niklas Magnusson

Tidsskrift

Review of Scientific Instruments
ISSN 0034-6748
e-ISSN 1089-7623
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2020
Trykket: 2020
Volum: 91
Artikkelnummer: 084705
Open Access

Importkilder

Scopus-ID: 2-s2.0-85090179953

Beskrivelse Beskrivelse

Tittel

Apparatus for loss measurements under multidirectional and dc-bias flux in electrical steel laminations

Sammendrag

Conventional 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.

Bidragsytere

Wei Wang

  • Tilknyttet:
    Forfatter
    ved Institutt for elektrisk energi ved Norges teknisk-naturvitenskapelige universitet
Aktiv cristin-person

Arne Nysveen

  • Tilknyttet:
    Forfatter
    ved Institutt for elektrisk energi ved Norges teknisk-naturvitenskapelige universitet

Niklas Magnusson

  • Tilknyttet:
    Forfatter
    ved Elkraftteknologi ved SINTEF Energi AS
1 - 3 av 3