High Temperature Superconducting Stable Levitation Electro-energy Storage Flywheel without Control and Its Nonlinear Dynamic Analysis

本文提出了一种简单稳定的高温超导悬浮储能飞轮系统。该系统在传动系统和电磁阻尼器方面有了新的方法。为了获得稳定的悬浮，使用了超导和永磁体，并有3个永磁体支撑在竖井的顶部。在驱动部分，采用8极永磁体和8个线圈来抵消径向的电磁力。介绍了一种由用于悬浮的永磁体和位于轴两端的4个线圈组成的磁阻尼器。当轴在垂直于轴的方向上振动时，电流流入阻尼器线圈。它会产生电磁力。力与轴的振动频率成正比，因此力的行为类似于阻尼力。使用该系统，我们有稳定的悬浮，并能显著抑制共振频率的振动。

In this paper, a simple and stable energy-storage flywheel system with high temperature superconducting levitation is presented. This system has new methods in drive system and electromagnetic damper. In order to have stable levitation, a superconductor and a permanent magnet are used, and 3 permanent magnets support the top of the shaft. In the part of drive system, 8-poles permanent magnet and 8 coils are used to cancel electromagnetic force in the radial direction. A magnetic damper consisting of permanent magnet for levitation and 4 coils is presented, which lies at each end of the shaft. When the shaft vibrates in the direction perpendicular to the shaft, the current flows in the damper coil. It generates the electromagnetic force. The force is in proportion with vibration frequency of the shaft, so that the force behaves like damping forces. Using this system, we have stable levitation, and vibrations at resonance frequencies can be suppressed significantly.