Magnetic Bearing Sets for a Flywheel System

Author

Sotelo, Guilherme Goncalves ; De Andrade, Rubens, Jr. ; Ferreira, Antonio Carlos

Author_Institution

Fed. Univ. of Rio de Janeiro, Rio de Janeiro

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2150

Lastpage

2153

Abstract

This paper presents a magnetic bearing set developed to work in a flywheel energy storage system. The bearing set is composed of a permanent magnetic bearing (PMB) and a superconducting magnetic bearing (SMB). A new configuration of a PMB having Nd-Fe-B magnet rings and a back yoke is proposed and compared with an existing one. Finite element method (FEM) simulations were used to design two different PMB configurations. Measurement results of axial and radial forces were carried out in zero field cooling (ZFC) and field cooling (FC) processes in two SMB topologies. These measured force results are presented and discussed in order to discover which configuration is more promising for the proposed application.

Keywords

finite element analysis; flywheels; magnetic bearings; permanent magnets; superconducting magnets; FEM; field cooling processes; finite element method; flywheel energy storage system; permanent magnetic bearing; superconducting magnetic bearing; zero field cooling; Cooling; Energy storage; Finite element methods; Flywheels; Force measurement; Magnetic field measurement; Magnetic levitation; Superconducting magnetic energy storage; Superconducting magnets; Topology; Flywheel; permanent magnetic bearing; superconducting magnetic bearing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.899268

Filename

4277729