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

Volume

4

fYear

2002

fDate

13-18 Oct. 2002

Firstpage

2275

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the

Conference_Location

Pittsburgh, PA, USA

ISSN

0197-2618

Print_ISBN

0-7803-7420-7

Type

conf

DOI

10.1109/IAS.2002.1042763

Filename

1042763