Simulations and Tests of Superconducting Linear Bearings for a MAGLEV Prototype

The complex microstructure of melt grown YBCO bulk material and the non-linear electromagnetic behavior makes it difficult to determine their thermal, electrical and magnetic properties. The knowledge of these parameters is essential to design superconducting magnetic bearings (SMB) for various appl...

Full description

Saved in:

Bibliographic Details
Published in:	IEEE transactions on applied superconductivity Vol. 19; no. 3; pp. 2120 - 2123
Main Authors:	Dias, D.H.N., Motta, E.S., Sotelo, G.G., de Andrade, R., Stephan, R.M., Kuehn, L., de Haas, O., Schultz, L.
Format:	Journal Article Conference Proceeding
Language:	English
Published:	New York, NY IEEE 01-06-2009 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	Algorithms Applied sciences BEARINGS COMPUTER SIMULATION COPPER OXIDE Critical state model CURRENT DENSITY ELECTRIC RAILWAYS Electrical engineering. Electrical power engineering Electromagnets Exact sciences and technology Finite element method Ground, air and sea transportation, marine construction high-temperature superconductors MAGLEV Magnetic flux Magnetic levitation Magnetic materials MAGNETIC PROPERTIES MATHEMATICAL ANALYSIS Mathematical models Microstructure Miscellaneous Product development Prototypes Rails Railway transportation and traffic Superconducting magnets Superconducting materials SUPERCONDUCTIVITY SUPERCONDUCTORS Testing Various equipment and components Virtual prototyping Yttrium barium copper oxide YTTRIUM OXIDE Flux line Electromagnetism Critical state model Prototype Flywheel Magnet Levitation high-temperature superconductors Density distribution Algorithm Optimal design Finite element method MAGLEV Magnetically levitated vehicle Magnetic bearing Cryostat System simulation Rail transportation Microstructure Current density Geometrical factor High temperature superconductor Electrical characteristic Magnetic properties
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The complex microstructure of melt grown YBCO bulk material and the non-linear electromagnetic behavior makes it difficult to determine their thermal, electrical and magnetic properties. The knowledge of these parameters is essential to design superconducting magnetic bearings (SMB) for various applications. The main characteristic of a SMB is the levitation force that arises between the superconductor and the magnetic source. The availability of simulation tools can greatly simplify the design of new prototypes. An algorithm based on the critical state model and the Finite Element Method (FEM) was developed. This method is based on the determination of the current density profile within the superconductor due to the penetration of the flux lines. This algorithm showed satisfactory to simulate the levitation force for a rotational magnetic bearing used in a flywheel prototype. In the present paper, this method is used to simulate a linear bearing and to design the optimal geometries for a magnetic rail that is being developed for a MAGLEV vehicle prototype. The linear bearing consists of two parts: a rail assembled with Nd-Fe-B magnets and YBCO bulks mounted inside a cryostat. Some simulated bearings were mounted and tested. The simulation results agree with the measurements.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	1051-8223 1558-2515
DOI:	10.1109/TASC.2009.2019203