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Computerized Torque Control for Large dc MotorsSpeed and torque ranges in generator mode extended. System of shunt resistors, electronic switches, and pulse-width modulation controls torque exerted by large, three-phase, electronically commutated dc motor. Particularly useful for motor operating in generator mode because it extends operating range to low torque and high speed.
Document ID
19870000312
Document Type
Other - NASA Tech Brief
Authors
Willett, Richard M. (Martin Marietta Corp.)
Carroll, Michael J. (Martin Marietta Corp.)
Geiger, Ronald V. (Martin Marietta Corp.)
Date Acquired
August 13, 2013
Publication Date
July 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 7
ISSN: 0145-319X
Subject Category
ELECTRONIC COMPONENTS AND CIRCUITS
Report/Patent Number
MFS-28169
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.