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CORE LOSS IN TURBINE GENERATORS: ANALYSIS OF NO-LOAD CORE LOSS BY 3D MAGNETIC FIELD CALCULATION

  • A. Nakahara
  • K. Takahashi
  • K. Ide
  • J. Kaneda
  • K. Hattori
  • T. Watanabe
  • H. Mogi
  • C. Kaido
  • E. Minematsu
  • K. Hanzawa

Abstract

Magnetic field analysis of no-load core loss in turbine generators is described. The losses in laminated steel sheets are calculated from the results of finite element magnetic field analysis. The additional losses in metal portions other than the steel sheets are also calculated. The sums of these losses were compared with the measured values for two generators and found to be 88% and 96% of the measured values. The results revealed that the additional losses made up a considerable part of the core losses.

Keywords

Steel Sheet Stator Core Additional Loss Core Loss Hysteresis Loss 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 2006

Authors and Affiliations

  • A. Nakahara
    • 1
  • K. Takahashi
    • 1
  • K. Ide
    • 1
  • J. Kaneda
    • 1
  • K. Hattori
    • 2
  • T. Watanabe
    • 2
  • H. Mogi
    • 3
  • C. Kaido
    • 3
  • E. Minematsu
    • 4
  • K. Hanzawa
    • 5
  1. 1.Hitachi Research LaboratoryHitachi, Ltd.HitachiJapan
  2. 2.Hitachi Works, Power SystemsHitachi Ltd.HitachiJapan
  3. 3.Steel Research LaboratoriesNippon Steel Corp.FuttsuJapan
  4. 4.Flat Products DivisionNippon Steel Corp.Chiyoda-kuJapan
  5. 5.Yawata WorksNippon Steel Corp.KitakyusyuJapan

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