NDLI: Research on Flow Rule and Thermal Dissipation Between the Rotor Poles of a Fully Air-Cooled Hydrogenerator

Content Provider	IEEE Xplore Digital Library
Author	Shukuan Zhang Weili Li Jinyang Li Likun Wang Xiaochen Zhang
Copyright Year	1982
Abstract	Aiming at providing a theoretical basis for the 1000-MW giant fully air-cooled hydrogenerator, which is being studied and developed currently, this paper established a coupling calculation model of 3-D fluid and temperature field based on the actual structure and size of a 250-MW fully air-cooled fanless hydrogenerator. Fluid dynamics control equations, and corresponding boundary conditions in the solved region were given. The additional losses from electromagnetic field calculation were applied to the coupling model as heat sources. Using a computational fluid dynamics approach, the flow distribution of cooling air and the temperature distribution of rotor structures were obtained. It focused on the axial and radial variation rules of the flow condition of cooling air between adjacent poles. Meanwhile, it conducted a detailed research study on the variation rule of the heat-transfer coefficients of pole shoes and damping bars. Temperature calculated value of exciting windings was coincident well with the measured value. The calculated error between the two values meets the engineering requirement, thus verifying both applicability and accuracy of the solution method this paper presents.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	3430
Ending Page	3437
Page Count	8
File Size	1733997
File Format	PDF
ISSN	02780046
Volume Number	62
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rotors Fluids Ventilation Atmospheric modeling Ducts Windings heat transfer coefficient Hydro-generator computational fluid dynamics fluid field temperature field Computational fluid dynamics (CFD) heat-transfer coefficient hydrogenerator
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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