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Title: Hybrid superconducting magnetic bearing and its frictional energy loss and dynamics

Abstract

A hybrid superconducting magnetic bearing (SMB) has been designed and tested. A flywheel energy storage (FES) prototype has been constructed for testing bearing friction loss and characterizing the dynamics of the rotor. The hybrid SMB design uses magnetic forces from permanent magnets for levitation and high temperature superconductor YBCO in between the magnets for stabilization. A 42 lb. flywheel currently can rotate up to 6,000 RPM with kinetic energy of 8 Wh stored. The result from the recent rotor spin-down experiment indicates an average frictional energy loss <2% per hour in a vacuum of 10 {sup {minus}5} torr, with imperfect system alignment and balance of rotor. The system dynamics has been conducted to improve upon the energy loss and rotor-bearing modeling.

Authors:
; ; ;  [1]
  1. Univ. of Houston, TX (United States); and others
Publication Date:
OSTI Identifier:
390767
Report Number(s):
CONF-950852-
TRN: 96:005769-0025
Resource Type:
Conference
Resource Relation:
Conference: 4. industrial conference and exhibition on applications of magnetic bearings, magnetic drives, and dry gas seals, Alexandria, VA (United States), 10-11 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the MAG `95 magnetic bearings, magnetic drives and dry gas seals conference & exhibition; PB: 384 p.
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 66 PHYSICS; ROTORS; MAGNETIC BEARINGS; HYBRID SYSTEMS; DESIGN; ENERGY LOSSES; SUPERCONDUCTING MAGNETS; HIGH-TC SUPERCONDUCTORS; FRICTION

Citation Formats

Xia, Z, Ma, K B, Chen, Q Y, and Cooley, R R. Hybrid superconducting magnetic bearing and its frictional energy loss and dynamics. United States: N. p., 1995. Web.
Xia, Z, Ma, K B, Chen, Q Y, & Cooley, R R. Hybrid superconducting magnetic bearing and its frictional energy loss and dynamics. United States.
Xia, Z, Ma, K B, Chen, Q Y, and Cooley, R R. 1995. "Hybrid superconducting magnetic bearing and its frictional energy loss and dynamics". United States.
@article{osti_390767,
title = {Hybrid superconducting magnetic bearing and its frictional energy loss and dynamics},
author = {Xia, Z and Ma, K B and Chen, Q Y and Cooley, R R},
abstractNote = {A hybrid superconducting magnetic bearing (SMB) has been designed and tested. A flywheel energy storage (FES) prototype has been constructed for testing bearing friction loss and characterizing the dynamics of the rotor. The hybrid SMB design uses magnetic forces from permanent magnets for levitation and high temperature superconductor YBCO in between the magnets for stabilization. A 42 lb. flywheel currently can rotate up to 6,000 RPM with kinetic energy of 8 Wh stored. The result from the recent rotor spin-down experiment indicates an average frictional energy loss <2% per hour in a vacuum of 10 {sup {minus}5} torr, with imperfect system alignment and balance of rotor. The system dynamics has been conducted to improve upon the energy loss and rotor-bearing modeling.},
doi = {},
url = {https://www.osti.gov/biblio/390767}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

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