Alternative dynamic electromechanical models of magnetic actuators containing eddy currents

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 oft...

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Veröffentlicht in:	IEEE transactions on magnetics 2000-07, Vol.36 (4), p.1333-1336, Article 1333
Hauptverfasser:	Brauer, J.R., Chen, Q.M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Actuators Applied classical electromagnetism Coupled mode analysis Dynamic structural analysis Dynamical systems Dynamics Eddy currents Electromagnetic analysis Electromagnetic coupling Electromagnetic modeling Electromagnetism electron and ion optics Estimators Exact sciences and technology Finite element methods Fundamental areas of phenomenology (including applications) Magnetic analysis Magnetism Magnetostatics Magnetostatics magnetic shielding, magnetic induction, boundary-value problems Mathematical analysis Physics Solenoids
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Beschreibung
Zusammenfassung:	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.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/20.877685