Title :
Surface impedance method applied to the prediction of eddy currents in hydrogenerator stator end regions
Author :
Silva, Viviane Cristine ; Marechal, Yves ; Foggia, Albert
Author_Institution :
Lab. d´´Electrotech. de Grenoble, CNRS, St. Martin d´´Heres, France
fDate :
5/1/1995 12:00:00 AM
Abstract :
A three-dimensional finite-element analysis is employed to investigate, the losses of hydrogenerator stator end regions by using surface-impedance boundary conditions. The three-dimensional complexity of the end-winding geometry is fully taken into account by the model. The purpose of this work is also to evaluate the eddy-current paths allowing for slits in the stator teeth and their effectiveness in reducing stator core-end losses
Keywords :
boundary-value problems; eddy current losses; eddy currents; electric impedance; finite element analysis; hydroelectric generators; machine theory; stators; 3D FEM; boundary conditions; eddy currents; end-winding geometry; finite-element analysis; hydrogenerator stator end regions; model; stator core-end losses; stator teeth slits; surface impedance method; three-dimensional FEA; Boundary conditions; Eddy currents; Finite element methods; Geometry; Impedance measurement; Lamination; Packaging; Solid modeling; Stator cores; Teeth;
Journal_Title :
Magnetics, IEEE Transactions on
