A high efficiency motor/generator for magnetically suspended flywheel energy storage systemThe authors discuss the theory and design of a brushless direct current motor for use in a flywheel energy storage system. The motor design is optimized for a nominal 4.5-in outside diameter operating within a speed range of 33,000-66,000 revolutions per minute with a 140-V maximum supply voltage. The equations which govern the motor's operation are used to compute a series of acceptable design parameter combinations for ideal operation. Engineering tradeoffs are then performed to minimize the irrecoverable energy loss while remaining within the design constraint boundaries. A final integrated structural design whose features allow it to be incorporated with the 500-Wh magnetically suspended flywheel is presented.
Document ID
19900051179
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Niemeyer, W. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Studer, P. (Technical Planning, Inc. Bethesda, MD, United States)
Kirk, J. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Anand, D. K. (Maryland, University College Park, United States)
Zmood, R. B. (Royal Melbourne Institute of Technology, Australia; Maryland, University College Park, United States)