NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Investigation of Combined Motor/Magnetic Bearings for Flywheel Energy Storage SystemsDr. Hofmann's work in the summer of 2003 consisted of two separate projects. In the first part of the summer, Dr. Hofmann prepared and collected information regarding rotor losses in synchronous machines; in particular, machines with low rotor losses operating in vacuum and supported by magnetic bearings, such as the motor/generator for flywheel energy storage systems. This work culminated in a presentation at NASA Glenn Research Center on this topic. In the second part, Dr. Hofmann investigated an approach to flywheel energy storage where the phases of the flywheel motor/generator are connected in parallel with the phases of an induction machine driving a mechanical actuator. With this approach, additional power electronics for driving the flywheel unit are not required. Simulations of the connection of a flywheel energy storage system to a model of an electromechanical actuator testbed at NASA Glenn were performed that validated the proposed approach. A proof-of-concept experiment using the D1 flywheel unit at NASA Glenn and a Sundstrand induction machine connected to a dynamometer was successfully conducted.
Document ID
20040152138
Acquisition Source
Glenn Research Center
Document Type
Other
Authors
Hofmann, Heath
(Pennsylvania State Univ. PA, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2003
Publication Information
Publication: 2003 NASA Faculty Fellowship Program at Glenn Research Center
Subject Category
Electronics And Electrical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Document Inquiry

Available Downloads

There are no available downloads for this record.
No Preview Available