Magnetic bearings for inertial energy storageAdvanced flywheels utilizing high strength fibers must operate at high rotational speeds and as such must operate in vacuum to reduce windage losses. The utilization of magnetic bearings in the flywheels overcome lubrication and seal problems, resulting in an energy storage system offering potential improvements over conventional electrochemical energy storage. Magnetic bearings evolved in the 1950s from the simple application of permanent magnets positioned to exert repulsive forces to the present where permanent magnets and electromagnets have been combined to provide axial and radial suspension. Further development of magnetic suspension has led to the design of a shaftless flywheel system for aerospace application. Despite the lack of proof of concept, integrated magnetic suspension in inertial storage systems can provide significant performance improvements to warrant development and tests.
Document ID
19880024784
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rodriguez, G. Ernest (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Eakin, Vickie (NASA Goddard Space Flight Center Greenbelt, MD, United States)