Analysis of Unbalanced Force for Flywheel Energy Storage System Based on Active Magnetic Bearing Considering Rotor Eccentricity Effects
Flywheel energy storage system(FESS) based on active magnetic bearing(AMB) can be used to generate impulse electric power. The unbalanced forces considering rotor eccentricity need to be calculateded, especially when the discharging current is high. This paper investigates the unbalanced forces in FESS considering rotor eccentricity. The analytic solution for the magnetic flux density distribution in the airgap region is used to calculate the unbalanced Lorentz forces and magnetic forces, which are compared with that of finite element method(FEM). The results show that the unbalanced forces should be calculated for FESS to guarantee the flywheel safe whirling and provide reference to the control system design of AMB.
Unbalanced Force Rotor Eccentricity Flux Density Flywheel Energy Storage System Active Magnetic Bearing
Chen Junfeng Liu Kun Xiao Kai Wang Haoze Ruan Yigao
Institute of Aerospace and Material Engineering, National University of Defense Technology ,Changsha, P.R.China,
国际会议
The Twelfth International Symposium on Magnetic Bearings(第十二届国际磁悬浮轴承学术会议)
武汉
英文
664-672
2010-08-22（万方平台首次上网日期，不代表论文的发表时间）