NDLI: Electrical motor with bulk Y-Ba-Cu-O pellets

Content Provider	IEEE Xplore Digital Library
Author	Tixador, P. Tempe, A. Gautier-Picard, P. Chaud, X. Beaugnon, E.
Copyright Year	2002
Abstract	The interaction between a magnetic field and a superconducting (SC) bulk sample produces not only levitation forces but also transverse ones. They may be used in an electromagnetic coupling device to transmit a torque or in an electrical motor to produce a torque. The authors have designed and built a disk type motor (vertical axial gap) with a static three-phase armature resistive winding and a rotating part composed of eight YBaCuO pellets immersed in a liquid nitrogen vessel. The SC samples are melt textured using the top seed melt texturing method. The armature winding is fed by a power converter. Then the supplied frequency and the speed of rotation are variable. The motor was tested in different conditions and operated without magnetizing the SC samples. It works in a way as a variable reluctance motor even if the hysteresis behaviour of the SC pellets complicates the operation. Other experiments were carried out magnetizing the SC samples before their use as an inductor. The operation is close then to a permanent magnet motor. The experimental set up and the different tests are reported.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	896
Ending Page	899
Page Count	4
File Size	648608
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Yttrium barium copper oxide Reluctance motors Hysteresis motors Superconducting magnets Torque Testing Magnetic levitation Magnetic fields Electrostatic levitation Electromagnetic coupling
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Trapped field characteristics of Y-Ba-Cu-O bulk in time-varying external magnetic field

Requirements on melt-textured Y-Ba-Cu-O for the use in magnetic bearings or electric motors

Macroscopic magnetic flux motion in Y-Ba-Cu-O bulk superconductor during pulsed field magnetization

Synchronous rotation of a floating magnet and flux penetration in Y-Ba-Cu-O superconductor

Measurements of magnetic fields and levitation forces of bulk superconductors

Effect of Sol-Gel Derived Nano-Scale ${hbox{Y}}_{2}{hbox{Ba}}_{4}{hbox{CuAgO}}_{rm y}$ Addition in Bulk Y-Ba-Cu-O Superconductors

Geometrical Effects on the Levitation Capability of Multiseeded Y–Ba–Cu–O Blocks

Calculation of magnetic levitation/suspension force of single grained Y-Ba-Cu-O superconductors

Critical current of Y-Ba-Cu-O bulk current leads

Electrical motor with bulk Y-Ba-Cu-O pellets

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Trapped field characteristics of Y-Ba-Cu-O bulk in time-varying external magnetic field

Requirements on melt-textured Y-Ba-Cu-O for the use in magnetic bearings or electric motors

Macroscopic magnetic flux motion in Y-Ba-Cu-O bulk superconductor during pulsed field magnetization

Synchronous rotation of a floating magnet and flux penetration in Y-Ba-Cu-O superconductor

Measurements of magnetic fields and levitation forces of bulk superconductors

Effect of Sol-Gel Derived Nano-Scale ${hbox{Y}}_{2}{hbox{Ba}}_{4}{hbox{CuAgO}}_{rm y}$ Addition in Bulk Y-Ba-Cu-O Superconductors

Geometrical Effects on the Levitation Capability of Multiseeded Y–Ba–Cu–O Blocks

Calculation of magnetic levitation/suspension force of single grained Y-Ba-Cu-O superconductors

Critical current of Y-Ba-Cu-O bulk current leads

Electrical motor with bulk Y-Ba-Cu-O pellets