Design of Low Power Consumption Hybrid Magnetic Bearing for Flywheel Eenergy Storage System

Title
Design of Low Power Consumption Hybrid Magnetic Bearing for Flywheel Eenergy Storage System
Authors
김우연이종민배용채김승종
Keywords
Hybrid Magnetic Bearing; 하이브리드 마그네틱 베어링; Flywheel Energy Storage System; 플라이휠 에너지 저장장치; Permanent Magnetic Bearing; 영구자석 베어링; Outer-rotor Type; 외전형
Issue Date
2010-08
Publisher
한국소음진동공학회논문집
Citation
VOL 20, NO 8, 717-726
Abstract
For the application into a 1 kWh flywheel energy storage system(FESS), this paper presents the design scheme of radial and axial hybrid magnetic bearings which use bias fluxes generated by permanent magnets. In particular, the axial hybrid magnetic bearing is newly proposed in this paper, in which a permanent magnet is arranged in axial direction so that it can support the rotor weight as well as provide a bias flux for axial magnetic bearing. Such hybrid magnetic bearings consume very low power, compared with conventional electromagnetic bearings. In this paper, to stably support a 140 kg flywheel rotor without contact, design process is explained in detail, and magnetic circuit analysis and three-dimensional finite element analysis are carried out to determine the design parameters and predict the performance of the magnetic bearings.
URI
http://pubs.kist.re.kr/handle/201004/38966
ISSN
1598-2785
Appears in Collections:
KIST Publication > Article
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