Adaptive relaxation algorithms for thermo-electromagnetic FEM problems

Author

Driesen, Johan ; Belmans, Ronnie ; Hameyer, Kay

Author_Institution

Dept. of Electr. Eng., Katholieke Univ., Leuven, Belgium

Volume

35

Issue

3

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

1622

Lastpage

1625

Abstract

Coupled thermo-electromagnetic problems are nonlinear. Therefore, the solution process involves an iteration algorithm, often in a block iteration scheme. To prevent divergence and accelerate convergence a relaxation scheme has to he applied. An adaptive scheme is proposed and implemented in a coupled solver. The performance of the methods used is demonstrated at an induction motor simulation and an electroheat application

Keywords

convergence; electric heating; finite element analysis; induction motors; iterative methods; nonlinear differential equations; relaxation; EM heat sources; adaptive relaxation algorithms; block iteration scheme; convergence acceleration; coupled solver; coupled thermo-electromagnetic problems; divergence prevention; eddy currents; electric fields; electroheat application; induction motor simulation; iteration algorithm; magnetic fields; nonlinear coupled problems; nonlinear differential equations; thermo-electromagnetic FEM problems; Acceleration; Differential equations; Eddy currents; Electromagnetic coupling; Jacobian matrices; Magnetic flux; Magnetic materials; Magnetic separation; Nonlinear equations; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.767306

Filename

767306