Title :
3D nonlinear steady-state temperature field after stator winding insulation laminating for large hydro-generator
Author :
Feng, Zhou ; Weili, Li ; Yunpeng, Hou ; Shukang, Cheng
Author_Institution :
Harbin Inst. of Technol., China
Abstract :
In this paper, 3D steady-state equations of heat conduction as well as its equivalent functional equation are presented under a rectangular coordinate system. The 3D isoparametic finite element method of hexahedron and eight nodes and Newton-Raphson method are applied to solve the 3D stator nonlinear temperature field, in which the surface coefficient of heat transfer couples with the surface temperature of different parts. Subsequently, the numerical method is used to analyze the influence of coefficient of heat conductivity on stator temperature field, especially when the coefficient of beat conductivity varies after the insulation lamination
Keywords :
Newton-Raphson method; finite element analysis; heat conduction; hydroelectric generators; laminations; machine insulation; machine theory; stators; thermal analysis; thermal conductivity; turbogenerators; 3D isoparametic finite element method; 3D nonlinear steady-state temperature field; Newton-Raphson method; coefficient of heat conductivity; equivalent functional equation; heat conduction; heat transfer; hexahedron; hydro-generator; numerical method; rectangular coordinate system; stator temperature field; stator winding insulation lamination; surface coefficient; surface temperature; turbogenerator; Conductivity; Couplings; Finite element methods; Heat transfer; Insulation; Newton method; Nonlinear equations; Stator windings; Steady-state; Temperature;
Conference_Titel :
Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on
Conference_Location :
Shenyang
Print_ISBN :
7-5062-5115-9
DOI :
10.1109/ICEMS.2001.971882
