Alternative dynamic electromechanical models of magnetic actuators containing eddy currents

Author

Brauer, John R. ; Chen, Q.M.

Author_Institution

Ansoft Corp., Pittsburgh, PA, USA

Volume

36

Issue

4

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

1333

Lastpage

1336

Abstract

Two methods of modeling electromechanical performance of magnetic actuators are compared when eddy currents are present. While a coupled dynamic electromagnetic/structural model accurately analyzes eddy current effects, a systems model based on parametric magnetostatic finite element analysis is often needed and is derived for the first time to include eddy current effects. The two methods are applied to the Bessho solenoid actuator and compared with measured electromechanical performance. In addition, a simple estimator of the effects of eddy currents on actuator closing times is presented and verified

Keywords

eddy currents; electromagnetic actuators; finite element analysis; solenoids; Bessho solenoid actuator; actuator closing times; coupled dynamic electromagnetic/structural model; dynamic electromechanical models; eddy currents; magnetic actuator; parametric magnetostatic finite element analysis; systems model; Actuators; Coupled mode analysis; Eddy currents; Electromagnetic analysis; Electromagnetic coupling; Electromagnetic modeling; Finite element methods; Magnetic analysis; Magnetostatics; Solenoids;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.877685

Filename

877685