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Powerline Coupler for Windmill Motor/GeneratorsEfficiency at low windspeed increased by firing-angle control. Power coupled from wind-driven induction motor/generator to ac powerline with help from circuit. Circuit reduces power consumed by field windings thereby improving efficiency at low windspeeds. Circuit includes zerocrossing detector, ramp generator and comparator similar to those used to set firing angles for thyristors in power factor motor controllers.
Document ID
19840000010
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Nola, F.
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: NASA Tech Briefs
Volume: 8
Issue: 3
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
MFS-25944
Accession Number
84B10010
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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