Title :
Transient thermal analysis of induction motors
Author :
Rajagopal, M.S. ; Seetharamu, K.N. ; Ashwathnarayana, P.A.
Author_Institution :
Indian Inst. of Technol., Madras, India
fDate :
3/1/1998 12:00:00 AM
Abstract :
Induction machines transient thermal analysis has been a subject of interest for electric machine designers in their effort to improve machine reliability and in rotor design optimisation. The study of transient thermal behavior is useful to identify causes of failure in induction machines. This paper presents a 2-D transient analysis of induction machines using the available heat transfer coefficients in literature. A generalised finite element code developed with Galerkin´s weighted residual technique is used for analysis. The model is applied to one squirrel-cage totally-enclosed fan cooled machine of 3.7 kW and another surface cooled machine of 5.7 kW. The predicted temperatures compare well with test results. The advantages and limitations of this model are discussed
Keywords :
Galerkin method; finite element analysis; machine theory; optimisation; rotors; squirrel cage motors; thermal analysis; transient analysis; 3.7 kW; 5.7 kW; Galerkin´s weighted residual technique; electric machine design; failure cause identification; generalised finite element code; heat transfer coefficients; induction motors; rotor design optimisation; squirrel-cage rotor; transient thermal analysis; Design optimization; Electric machines; Finite element methods; Heat transfer; Induction machines; Induction motors; Rotors; Temperature; Testing; Transient analysis;
Journal_Title :
Energy Conversion, IEEE Transactions on
