Hybrid superconducting magnetic bearing for kinetic energy storage applications and its frictional energy loss
Conference
·
OSTI ID:416740
- Univ. of Houston, TX (United States); and others
A hybrid superconducting magnetic bearing (HSMB) has been designed, constructed and implemented in a flywheel energy storage (FES) prototype. The HSMB design uses magnetic forces from permanent magnets for levitation and high temperature superconductor YBCO in between the magnets for stabilization. A 19 kg (42 lb.) flywheel currently can rotate up to 6,000 RPM with kinetic energy of 8 Wh stored. To identify the factors of frictional energy loss in the bearings, the authors have conducted a series of spin-down experiments in different operational conditions. The result from the recent test under the air pressure of 10{sup {minus}5} torr indicates an average frictional energy loss <2% per hour, with the imperfect system alignment and an unbalanced rotor.
- OSTI ID:
- 416740
- Report Number(s):
- CONF-950722--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hybrid superconducting magnetic bearing and its frictional energy loss and dynamics
Fields and forces in flywheel energy storage with high-temperature superconducting bearings
Fields and forces in flywheel energy storage with high-temperature superconducting bearings
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:390767
Fields and forces in flywheel energy storage with high-temperature superconducting bearings
Conference
·
Wed May 01 00:00:00 EDT 1996
·
OSTI ID:226025
Fields and forces in flywheel energy storage with high-temperature superconducting bearings
Journal Article
·
Fri Feb 28 23:00:00 EST 1997
· IEEE Transactions on Magnetics
·
OSTI ID:462670