NASA NTRS · 19810000124
Alternating-Current Motor Drive for Electric Vehicles
Abstract
New 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.
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Krauthamer, S., Rippel, W. E.. 1982-11-01. Alternating-Current Motor Drive for Electric Vehicles. https://ntrs.nasa.gov/citations/19810000124
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