Adaptive Linear-Implicit Time Integration Using Subspace Projection Techniques for Electroquasistatic and Thermodynamic Field Simulations

Author

Steinmetz, Thorsten ; Wimmer, Georg ; Clemens, Markus

Author_Institution

Dept. of Electr. Eng., Helmut-Schmidt-Univ., Hamburg

Volume

43

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1273

Lastpage

1276

Abstract

An adaptive linear-implicit time integration scheme applied to the simulation of electroquasistatic (EQS) and thermodynamic fields in the time domain is presented. Nonlinear conductive effects are taken into account in the EQS model, where the linearization is incorporated into the numerical time integration algorithm. As a consequence, in each time step, only one linear system of equations with varying right-hand sides is to be solved. This solution process can be accelerated using subspace projection techniques. Numerical results of EQS and coupled EQS/thermodynamic simulations of 3-D high-voltage (HV) applications are presented

Keywords

electric fields; integration; thermodynamics; time-domain analysis; adaptive linear-implicit time integration; electroquasistatic field simulations; high-voltage applications; linear system; nonlinear conductive effects; subspace projection techniques; thermodynamic field simulations; time domain; Acceleration; Computational modeling; Differential equations; Finite element methods; Linear systems; Magnetic materials; Nonlinear equations; Performance analysis; Thermal stresses; Thermodynamics; Electroquasistatic (EQS) fields; linear-implicit time integration; subspace projection techniques; thermodynamics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.892394

Filename

4137817