DocumentCode :
230478
Title :
Full 3D eddy current and temperature field analysis of large hydro-generators in different operating conditions
Author :
Haijun Wang ; Risheng Zong ; Lei Liu ; Shiyou Yang
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
fYear :
2014
fDate :
22-25 Oct. 2014
Firstpage :
3599
Lastpage :
3603
Abstract :
Accurate and precise determination of 3D eddy current and temperature fields of a large hydro-generator has always been a formidable challenge to engineers and academicians. In this regard, the full three dimensional (3D) finite element models and methods are developed for numerical solutions of the coupled eddy current and temperature fields in the end region of a large hydro-generator. The equivalent medium parameters used in the computations are then comprehensively discussed. The methodology to determine the field and phase currents under different operating states is also presented. Moreover, an approach to effectively deal with the thin skin-depth is introduced. Numerical results on the coupled eddy current and temperature fields in the end region of a 100 MW hydro-generator in three different operating conditions confirm positively the feasibility of the present work.
Keywords :
eddy currents; finite element analysis; hydroelectric generators; 3D FEM; 3D eddy current; equivalent medium parameters; large hydrogenerator; numerical solutions; operating conditions; phase currents; power 100 MW; temperature field analysis; thin skin-depth; three dimensional finite element models; Approximation methods; Coils; Conductors; Eddy currents; Magnetic fields; Numerical models; Three-dimensional displays;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
Type :
conf
DOI :
10.1109/ICEMS.2014.7014115
Filename :
7014115
Link To Document :
بازگشت