3-D eddy current analysis of bevel edge core reactor using modeling technique of laminated steel

Norio Takahashi, Takaaki Nakau, Daisuke Miyagi, Shuichi Nogawa, Minoru Kuwata

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The eddy current is induced in silicon steel sheets of core block of power reactor due to the fringing flux, and this causes a local overheating. If a bevel edge core is used in the reactor composed of laminated core, the eddy current loss may be reduced. In order to investigate the behavior of flux and eddy current in the reactor, a modeling technique of laminated core for exact and quick practical nonlinear analysis is investigated. It is shown that the practical analysis under distorted flux waveform is possible by subdividing only the region near the surface of lamination, and the inner part is subdivided as a bulk core having anisotropic conductivity. The flux and eddy current distribution of the bevel edge core reactor is investigated using the modeling technique of laminated core. It is illustrated that the maximum eddy current loss is reduced to about 20%, and the total eddy current loss is decreased to about 50% by introducing the bevel edge core.

Original languageEnglish
JournalIEEJ Transactions on Power and Energy
Volume128
Issue number1
DOIs
Publication statusPublished - 2008 Dec 1
Externally publishedYes

Keywords

  • Bevel edge core
  • Eddy current loss
  • Fringing flux
  • Local heating
  • Reactor

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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