Design of Low Power Consumption Hybrid Magnetic Bearing for Flywheel Eenergy Storage System
- Design of Low Power Consumption Hybrid Magnetic Bearing for Flywheel Eenergy Storage System
- 김우연; 이종민; 배용채; 김승종
- Hybrid Magnetic Bearing; 하이브리드 마그네틱 베어링; Flywheel Energy Storage System; 플라이휠 에너지 저장장치; Permanent Magnetic Bearing; 영구자석 베어링; Outer-rotor Type; 외전형
- Issue Date
- VOL 20, NO 8, 717-726
- 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.
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- KIST Publication > Article
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