Large-Scale 3D Electromagnetic Field Analysis for Estimation of Stator End Region Loss in Turbine Generators

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2017/11/01

タイトル(英語): Large-Scale 3D Electromagnetic Field Analysis for Estimation of Stator End Region Loss in Turbine Generators

著者名: Kenta Motoyoshi (Mitsubishi Electric Corporation), Haruyuki Kometani (Mitsubishi Electric Corporation), Nobuyuki Sora (Mitsubishi Electric Corporation), Susumu Maeda (Mitsubishi Electric Corporation)

著者名(英語): Kenta Motoyoshi (Mitsubishi Electric Corporation), Haruyuki Kometani (Mitsubishi Electric Corporation), Nobuyuki Sora (Mitsubishi Electric Corporation), Susumu Maeda (Mitsubishi Electric Corporation)

キーワード: turbine generator，eddy current loss，electromagnetic field analysis，stator end region

要約(英語): Improving the energy efficiency and increasing the power density of indirectly hydrogen-cooled turbine generators used in high efficiency combined-cycle power plants is important due to global warming and increasing power demands. When the output current is increased for achieving high power density, the stray load loss at the stator end region increases due to leakage flux from the armature and field coils. Therefore, it is necessary to evaluate the temperature of the stator end region under the condition of leading power factor load. In this paper, we analyzed the loss density distributions at the end region structures using large-scale 3D electromagnetic field analysis to establish the temperature reliability of an 870 MVA indirectly hydrogen cooled machine, which is the largest class capacity in the world. Thermal analysis was then performed using the loss density distribution obtained from the 3D analysis. The analysis results show good agreement with the measured values.

本誌: IEEJ Journal of Industry Applications Vol.6 No.6 （2017） Special Issue on "ICEMS 2016-Chiba"

本誌掲載ページ: 340-345 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/6/6/6_340/_article/-char/ja/