Flywheel Challenge: HTS Magnetic Bearing
暂无分享,去创建一个
A 200 mm cylindrical engineering prototype high temperature superconducting (HTS) was designed and fabricated. Measurements show that the 17 kg PM rotor can suspend safely 1000 kg in axial direction and 470 kg radially. The rationale for the bearing performance is to stabilize a 400 kg rotor of a new compact 5 kWh/280 kW flywheel energy storage system (COM - FESS). Measurements of the magnetic bearing force, stiffness and drag-torque are presented indicated the successful targeting a milestone in the HTS bearing technology. The influence of the PM configuration and the YBCO temperature on the bearing performance was experimentally studied, providing high-force or high-stiffness behaviour. The axial stiffness 5 kN/mm at 0.5 mm displacement is the highest value of a HTS bearing we know.
[1] A. C. Day,et al. Temperature and frequency effects in a high-performance superconducting bearing. , 2002 .
[2] T. Riedel,et al. Encapsulated HTS bearings: technical and cost considerations , 2005, IEEE Transactions on Applied Superconductivity.
[3] Masato Murakami,et al. Application of superconducting magnetic bearings to a 10 kWh-class flywheel energy storage system , 2005 .
[4] W. Nick,et al. Progress toward 500 kg HTS bearings , 2003 .