3-D Steady-State Eddy-Current Damping and Stiffness Terms for a Finite Thickness Conductive Plate

Author

Paul, Sudipta ; Wright, John ; Bird, Jonathan Z.

Author_Institution

Lab. for Electromech. Energy Conversion & Control, Univ. of North Carolina, Charlotte, NC, USA

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

In this paper, the 3-D forces created by induced eddy currents in a conductive plate of finite thickness are derived using the concept of magnetic charge and energy. Using this approach the exact steady state based eddy-current damping and stiffness matrices for an arbitrary magnetic source moving above a conductive plate are derived. The damping and stiffness terms caused by both angular and spatial motion are accounted for. The presented equations can be utilized to create a linear state-space eddy-current force model.

Keywords

eddy currents; electric charge; matrix algebra; 3D steady-state eddy-current damping; arbitrary magnetic source; finite thickness conductive plate; linear state-space eddy-current force model; magnetic charge; magnetic energy; stiffness matrices; Damping; Force; Magnetomechanical effects; Magnetostatics; Manganese; Mathematical model; Steady-state; Damping; Halbach rotor; eddy currents; stiffness;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2327097

Filename

6971406