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Alternating-Current Motor Drive for Electric VehiclesNew electric drive controls speed of a polyphase as motor by varying frequency of inverter output. Closed-loop current-sensing circuit automatically adjusts frequency of voltage-controlled oscillator that controls inverter frequency, to limit starting and accelerating surges. Efficient inverter and ac motor would give electric vehicles extra miles per battery charge.
Document ID
19810000124
Document Type
Other - NASA Tech Brief
Authors
Krauthamer, S. (CALTECH)
Rippel, W. E. (CALTECH)
Date Acquired
August 11, 2013
Publication Date
November 1, 1982
Publication Information
Publication: NASA Tech Briefs
Volume: 6
Issue: 2
ISSN: 0145-319X
Subject Category
ELECTRONIC COMPONENTS AND CIRCUITS
Report/Patent Number
NPO-14830
NPO-14768
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.