Proposal of new structure of MgB2 wires with low AC loss for stator windings of fully superconducting motors located in iron core slots

Kazuhiro Kajikawa, R. Osaka, H. Kuga, T. Nakamura, T. Wakuda

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The new structure of MgB2 monofilamentary wires for stator windings of fully superconducting motors is proposed to reduce their AC losses in iron core slots for the application of an alternating transport current. In order to validate the proposed structure of wire for loss reduction, numerical calculations are carried out by means of a finite element method using edge elements formulated with a self-field due to currents induced in an analysis region. It is assumed that the voltage-current characteristics of the MgB 2 superconductor are given by Bean's critical state model, in which the critical current density is independent of the local magnetic field. The influences of wire structures on the AC losses are discussed quantitatively toward the optimum design of stator windings in fully superconducting motors with the MgB2 wires.

Original languageEnglish
Pages (from-to)1470-1473
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume471
Issue number21-22
DOIs
Publication statusPublished - Nov 1 2011

Fingerprint

Cable cores
stators
slots
Stators
proposals
alternating current
Iron
wire
Wire
iron
Induced currents
Current voltage characteristics
Superconducting materials
critical current
finite element method
Magnetic fields
current density
Finite element method
electric potential
magnetic fields

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

Cite this

Proposal of new structure of MgB2 wires with low AC loss for stator windings of fully superconducting motors located in iron core slots. / Kajikawa, Kazuhiro; Osaka, R.; Kuga, H.; Nakamura, T.; Wakuda, T.

In: Physica C: Superconductivity and its applications, Vol. 471, No. 21-22, 01.11.2011, p. 1470-1473.

Research output: Contribution to journalArticle

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