Title :
Eddy current analysis in the stator end structures of large capacity turbine generators
Author :
Fujita, Masafumi ; Ueda, Takashi ; Tokumasu, Tadashi ; Nagakura, Ken ; Kakiuchi, Mikio ; Otaka, Toru
Author_Institution :
Toshiba Corp., Tokyo, Japan
Abstract :
In the stator core end region of the large capacity turbine generators, the leakage magnetic flux induces eddy current loss in the metal structures. In this paper, the results of three-dimensional electromagnetic field analyses of the stator end structures are described. It is demonstrated that the eddy current loss dependency on the power factor can be explained with the phasor diagrams on the magnetic flux. Then the relationship between the end structure and the current source is discussed.
Keywords :
eddy current losses; eddy currents; magnetic flux; magnetic leakage; power factor; turbogenerators; eddy current analysis; eddy current loss; large capacity turbine generators; magnetic flux leakage; metal structures; phasor diagrams; power factor; stator end structures; three-dimensional electromagnetic field analysis; Coils; Eddy currents; Flanges; Magnetic analysis; Magnetic cores; Magnetic flux; Performance analysis; Stator cores; Steel; Turbines; eddy current; end region; stator core; turbine generator;
Conference_Titel :
Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5177-7
Electronic_ISBN :
978-4-88686-067-5
DOI :
10.1109/ICEMS.2009.5382938
