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Power factor control system for ac induction motorsA power control circuit for an induction motor is disclosed in which a servo loop is used to control power input by controlling the power factor of motor operation. The power factor is measured by summing the voltage and current derived square wave signals.
Document ID
19810018857
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Nola, F. J. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 4, 2013
Publication Date
May 5, 1981
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-044431
Patent Number: US-PATENT-4,266,177
Patent Number: NASA-CASE-MFS-23988-1
Accession Number
81N27395
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,266,177|NASA-CASE-MFS-23988-1
Patent Application
US-PATENT-APPL-SN-044431

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