Magnetic field analysis of stator core end region of large turbogenerators

• Published in: IEEE transactions on magnetics Vol. 36; no. 4; pp. 1850 - 1853
• Main Authors: Fujita, M., Tokumasu, T., Yoda, H., Tsuda, H., Ito, K., Nagano, S.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.07.2000; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Core loss; Electric motors; Electrical engineering. Electrical power engineering; Electrical machines; Exact sciences and technology; Flanges; Flux; Leakage; Magnetic analysis; Magnetic cores; Magnetic fields; Magnetic flux; Magnetism; Performance analysis; Phasors; Saturation magnetization; Stator cores; Stators; Temperature; Three dimensional; Turbogenerators; Stator; Phasor; Theoretical study; Magnetic core; Leakage flux; Electric motor; Turbine generator; Magnetic field
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/20.877805

In order to estimate the losses and temperature rise at the end of electrical machines, it is important to clarify electromagnetic behavior in the core end region. In this paper, the method of evaluating the leakage flux of the stator end region of large turbogenerators, combining three-dimensional magnetic field analysis and phasor diagram analysis of the end leakage flux is described. Moreover, the result of applying this method to a 60 Hz-1000 MW turbogenerator is also described.