Stabilized Magnetic Bearings axially positioned by Axial Gap Motor for a High Specific Energy, Flywheel Energy Storage System

Lightweight components are needed for Flywheel Energy Storage Systems with a system goal of 70 wh/kg to be used in Space Applications. Current satellite energy storage options are limited to a few electrochemical battery technologies that must be oversized to handle the high charge and discharge rates without greatly effecting life. Permanent magnetic bearing system is proposed that utilizes multiple, concentric magnetic rings that has been uniquely stabilized by shaping the magnetic interface surface. Additional weight savings and structural simplicity is proposed via utilizing dual Axial Gap Motors as the Axial Positioning System to the Magnetic Bearing System. We plan on conducting 3-D FEA modeling and empirical testing of an existing multi-pole magbearing and then repeat the modeling and testing for 3 separate rings added to the periphery of the original disk. We will develop a method of accurately designing magnetic bearings with variable width poles and magnet thicknesses that are uniquely stabilized. The proposing company and project is led by a 3 time veteran SBIR principal investigator who has secured the talents of a premier flywheel designer and a well renown electric motor controller designer as consultants. This project is the basis to affordable, commercially available magnetic bearings.