Development of Lorentz force type magnetic bearing for energy storage flywheel

本课题的研究对象是一种蓄电式飞轮。为了使旋转损耗小，研制了洛伦兹力型电磁轴承，并将其应用于小型储能飞轮。所制作的实验装置实现了转子悬浮稳定控制，最高转速可达3000r/min。此外，为了比较磁轴承和球轴承的减速特性，还进行了自由运行实验。所提出的洛伦兹力型磁轴承清楚地表明，与球轴承相比，旋转损耗可以减少三分之一。

This research focused on an electric power storage flywheel. In order to make rotational loss small, the Lorentz force type magnetism bearing was developed, and it applied to the small electric power storage flywheel. The fabricated experimental setup achieved stable rotor levitation control in the range up to 3000r/min. Moreover, the free-run experiment was carried out in order to compare the deceleration characteristics of a magnetic bearing and a ball bearing. The proposed Lorentz force type magnetism bearing showed clearly that a rotation loss can be reduced in one-third compared with the ball bearing.