Computation of forces on devices carrying transport and eddy currents

Author

Sturgess, J.P. ; Preston, T.W.

Author_Institution

GEC Alsthom Eng. Res. Centre, Stafford, UK

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2391

Lastpage

2393

Abstract

A finite-element-based method for calculating the current, field, and force distribution in the conductors of power devices exhibiting skin effect is presented. A formulation in terms of magnetic-field strength is used to model the device in the plane of the current flow. The technique is demonstrated with an application to the computation of the forces acting upon the arm of a high-current circuit breaker. The electromagnetic forces and torques arising under fault conditions are found to be appreciable and must be taken into account when designing the circuit breaker and assessing its performance

Keywords

circuit breakers; conductors (electric); eddy currents; finite element analysis; skin effect; conductors; current distribution; current flow; device modelling; eddy currents; electromagnetic forces; electromagnetic torque; fault conditions; field distribution; finite-element-based method; force distribution; high-current circuit breaker; magnetic-field strength; power devices; skin effect; transport currents; Boundary conditions; Circuit breakers; Conducting materials; Conductors; Current distribution; Eddy currents; Equations; Finite element methods; Magnetic fields; Skin effect;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104741

Filename

104741