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자기부상형 플라이휠 에너지 저장 장치의 자기베어링 시스템 설계
유승열(S. Yoo),모상수(S. Mo),최상규(S. Choi),이정필(J. Lee),한영희(Y. Han),노명규(M.D. Noh) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
Flywheel energy storage systems (FESS) have advantages over other types of energy storage methods due to their infinite charge/discharge cycles and environmental friendliness. The system has two radial bearings and one hybridthrust bearing. Thrust hybrid-type bearing use permanent magnet to relieve gravity load. The radial bearings were designed to provide sufficient force slew rate considering the unbalance disturbance at the operating speeds. In this paper, we will derive dynamic model of hybrid-type bearing using permanent magnet for thrust bearing and present simulation and stability of the model.