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Title: First operation of a Hoop Energy Storage System

Abstract

Energy storage systems are needed in industrialized countries to achieve diurnal load leveling of the electric power utility. A study of the design, fabrication and operational characteristics of a Hoop Energy Storage System (HESS) has been done. For the magnetic levitation of Nd-Fe-B permanent magnet, the magnetic force calculation and dynamic analysis of the rotational stability were included in the design and operation of HESS. 2564 Nd-Fe-B magnets which has the dimension of 2in. x 2in. x lin. were assembled for the levitation of a 3.7 ton-carbon fiber composite hoop. A computer simulation of rotation under magnetic force and torque due to both the vertical stabilization magnetic set and the radial stabilization magnet set showed that the rotation of the hoop's spin axis induced by the torque of the levitated rotor magnets reduces the additional active control. The fabrication of a 6m-diameter carbon fiber composite hoop was completed and the ANSYS code was used to study its stress analysis. The study showed that the strength of the hoop material is high enough for the 600MJ-energy storage. A performance test of the HESS at a low speed rotation is reported.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Seoul National Univ. (KR)
OSTI Identifier:
20000838
Alternate Identifier(s):
OSTI ID: 20000838
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING AND POLICY; 20 FOSSIL-FUELED POWER PLANTS; 25 ENERGY STORAGE; OFF-PEAK ENERGY STORAGE; LOAD MANAGEMENT; ELECTRIC UTILITIES; LEVITATION; PERMANENT MAGNETS; MECHANICAL ENERGY STORAGE EQUIPMENT

Citation Formats

Lee, K.C., Han, S.H., Kim, K.S., Chung, K.H., Moon, T.S., and Cho, C.H. First operation of a Hoop Energy Storage System. United States: N. p., 1999. Web.
Lee, K.C., Han, S.H., Kim, K.S., Chung, K.H., Moon, T.S., & Cho, C.H. First operation of a Hoop Energy Storage System. United States.
Lee, K.C., Han, S.H., Kim, K.S., Chung, K.H., Moon, T.S., and Cho, C.H. Wed . "First operation of a Hoop Energy Storage System". United States.
@article{osti_20000838,
title = {First operation of a Hoop Energy Storage System},
author = {Lee, K.C. and Han, S.H. and Kim, K.S. and Chung, K.H. and Moon, T.S. and Cho, C.H.},
abstractNote = {Energy storage systems are needed in industrialized countries to achieve diurnal load leveling of the electric power utility. A study of the design, fabrication and operational characteristics of a Hoop Energy Storage System (HESS) has been done. For the magnetic levitation of Nd-Fe-B permanent magnet, the magnetic force calculation and dynamic analysis of the rotational stability were included in the design and operation of HESS. 2564 Nd-Fe-B magnets which has the dimension of 2in. x 2in. x lin. were assembled for the levitation of a 3.7 ton-carbon fiber composite hoop. A computer simulation of rotation under magnetic force and torque due to both the vertical stabilization magnetic set and the radial stabilization magnet set showed that the rotation of the hoop's spin axis induced by the torque of the levitated rotor magnets reduces the additional active control. The fabrication of a 6m-diameter carbon fiber composite hoop was completed and the ANSYS code was used to study its stress analysis. The study showed that the strength of the hoop material is high enough for the 600MJ-energy storage. A performance test of the HESS at a low speed rotation is reported.},
doi = {},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}