一种新型低成本飞轮储能用永磁偏置磁轴承

A Low Cost Permanent Magnet Biased Bearing Used in Flywheel Energy Storage System

设计了一种用于飞轮储能系统中的结构简单、功耗小的新型磁悬浮轴承。设计的轴承因为其偏置磁通与永磁磁通为同一平面,因此属于异极型永磁轴承。该磁轴承采用稀土永磁体产生固定的偏磁磁通,采用通电线圈产生控制磁通,使磁悬浮轴承的转子实现低能耗、稳定运行。在介绍样机的机械结构和功能外,本文还给出了通过对样机的仿真和实验测量而得到的特征曲线,验证了所设计轴承的可行性。

In this paper a novel design of an AMB used in flywheel energy storage system with low power consumption combined with an uncomplex mechanical construction is introduced. The flux of the permanent magnets and the flux of the coils lie in the same plane that is to say the introduced magnetic bearing is a heteropolar type. Rare earth permanent magnets are implemented to impress a constant bias flux whereas coils generate the control flux to stabilize the bearing. Besides the mechanical construction and the functionality, the characteristic curves of the AMB determined by simulation and by measurements on a prototype are presented, and the feasibility of the designed bearing can be verified.