Magnetic Bearing Sets for a Flywheel System

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 c...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2007-06, Vol.17 (2), p.2150-2153
Main Authors: Sotelo, G.G., de Andrade, R., Ferreira, A.C.
Format: Article
Language:English
Subjects:
Applied sciences
Computer simulation
Cooling
Design. Technologies. Operation analysis. Testing
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electromagnets
Electronics
Energy accumulation
Energy storage
Exact sciences and technology
Ferrous alloys
Finite element method
Finite element methods
Flywheel
Flywheels
Force measurement
Integrated circuits
Magnetic bearings
Magnetic field measurement
Magnetic levitation
Mathematical models
Miscellaneous
permanent magnetic bearing
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
superconducting magnetic bearing
Superconducting magnetic energy storage
Superconducting magnets
Superconductivity
Topology
Various equipment and components
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Description
Summary: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.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2007.899268