Feasibility Study of Passive Electromagnetic Damping Systems
Publication: Journal of Structural Engineering
Volume 134, Issue 1
Abstract
A linear displacement electromagnetic machine is proposed to be used as a passive structural damper. The electromagnetic damper extracts the kinetic energy imparted into the structure by wind or seismic disturbances by transforming it into electricity and induces a force that opposes the movement produced by the disturbance. It is shown that the force-velocity relationship of the electromagnetic damper approximates that of an ideal dashpot with a time delay caused by the circuit reactance. A feasibility analysis is presented to demonstrate the physical and economical viability of the electromagnetic damper as a structural device. The proposed device presents several advantages over current passive structural dampers, among which are: energy dissipation external to the device; possible operation as a semiactive damper by modifying the circuit impedance; and possible operation as an actuator by reversing the energy flow direction.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 134 • Issue 1 • January 2008
Pages: 164 - 170
Copyright
© 2008 ASCE.
History
Received: Dec 30, 2004
Accepted: Jun 26, 2007
Published online: Jan 1, 2008
Published in print: Jan 2008
Notes
Note. Associate Editor: Michael D. Symans
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