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Alternative dynamic electromechanical models of magnetic actuators containing eddy currents

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2 Author(s)
J. R. Brauer ; Ansoft Corp., Pittsburgh, PA, USA ; Q. M. Chen

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

Published in:

IEEE Transactions on Magnetics  (Volume:36 ,  Issue: 4 )