Title :
Calculation of 3D nonlinear stator temperature field after insulation aging and shelling for large synchronous generator based on FEM
Author :
Feng, Zhou ; Weili, Li ; Yunpeng, Hou ; Luo Yingh
Author_Institution :
Sch. of Electr. Eng., Harbin Inst. of Technol., China
Abstract :
A salient pole synchronous generator is taken for an example to be calculated in this paper. The 3D isoparametric finite element method and Newton-Raphson method are applied to compute the 3D thermal field while the flow field in stator ventilating grooves is a nonlinear field. At the same time, numerical simulation method is used to analyze the stator thermal field after insulation aging, by which the trend of temperature variation in each stator part is determined. Finally, the calculated results are compared with measured results and the accuracy meet the need of engineering application, which lay a theoretical foundation for online temperature monitoring and heat fault diagnosis.
Keywords :
Newton-Raphson method; ageing; finite element analysis; machine insulation; machine theory; stators; synchronous generators; temperature distribution; thermal analysis; ventilation; 3D isoparametic finite element method; 3D nonlinear stator temperature field calculation; FEM; Newton-Raphson method; heat fault diagnosis; insulation aging; insulation shelling; online temperature monitoring; salient pole synchronous generator; stator ventilating grooves flow field; Aging; Finite element methods; Heat engines; Insulation; Newton method; Numerical simulation; Stators; Synchronous generators; Temperature measurement; Temperature sensors;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1042763
