Eddy current effects are the base of electrodynamic bearings principle. They arise when a conductor moves in a magnetic field. As they are passive by nature, no additional instrumentation such as sensor or power electronics are needed, and this implies several advantages such as the reduced complexity, improved reliability and smaller size and cost. Electrodynamic bearings have also drawbacks such as the difficulty in ensuring a stable levitation in a wide speed range, therefore the bearing design must be based on a dynamic analysis to investigate the stability issue. A prediction of the dynamic performance of rotating systems equipped with axial/radial electrodynamic bearings needs a model able to describe the dynamic behavior. The present paper is devoted to describe and validate experimentally the quasi static and the dynamic model of axial electrodynamic bearings.

Axial electrodynamic suspension for a vertical axis rotor: modeling and experimental validation / Impinna, Fabrizio; GIRARDELLO DETONI, Joaquim; Amati, Nicola; Tonoli, Andrea. - ELETTRONICO. - (2011). (Intervento presentato al convegno 40° Convegno Nazionale AIAS, 2011 tenutosi a Palermo, Italy nel 7-10 settembre).

Axial electrodynamic suspension for a vertical axis rotor: modeling and experimental validation

IMPINNA, FABRIZIO;GIRARDELLO DETONI, JOAQUIM;AMATI, NICOLA;TONOLI, Andrea
2011

Abstract

Eddy current effects are the base of electrodynamic bearings principle. They arise when a conductor moves in a magnetic field. As they are passive by nature, no additional instrumentation such as sensor or power electronics are needed, and this implies several advantages such as the reduced complexity, improved reliability and smaller size and cost. Electrodynamic bearings have also drawbacks such as the difficulty in ensuring a stable levitation in a wide speed range, therefore the bearing design must be based on a dynamic analysis to investigate the stability issue. A prediction of the dynamic performance of rotating systems equipped with axial/radial electrodynamic bearings needs a model able to describe the dynamic behavior. The present paper is devoted to describe and validate experimentally the quasi static and the dynamic model of axial electrodynamic bearings.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2499199
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