3-D eddy current analysis in the end region of a turbogenerator by using reduced magnetic vector potential

Author

Yao, Yingying ; Xia, Haixia ; Ni, Guangzheng ; Liang, Xubiao ; Yang, Shiyou ; Ni, Peihong

Author_Institution

Coll. of Electr. Eng., Zhejiang Univ., Hangzhou

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

1323

Lastpage

1326

Abstract

This paper presents a novel strategy to model the full three-dimensional structures of end region of huge turbine-generators with power level up to 1000MW. The 3-D nonlinear anisotropic magnetic field including the eddy current losses is calculated by utilizing the reduced magnetic vector potential formulation. With the help of Biot-Savart´s law, the magnetic field caused by currents in the stator and rotor windings, which are very complex in geometric shapes, can be calculated in a far easy way. The flux density distribution in the end region and the eddy current distribution in the structural parts under different operating conditions are presented

Keywords

current distribution; eddy current losses; magnetic anisotropy; magnetic fields; rotors; stators; turbogenerators; 3D eddy current analysis; 3D structures; Biot-Savart law; eddy current distribution; flux density distribution; magnetic vector potential; nonlinear anisotropic magnetic field; rotor windings; stator windings; turbogenerators; Anisotropic magnetoresistance; Eddy currents; Magnetic analysis; Magnetic anisotropy; Magnetic fields; Magnetic flux; Perpendicular magnetic anisotropy; Shape; Stator windings; Turbogenerators; Eddy current; end region; modeling; three dimensions; turbogenerator;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871941

Filename

1608458