NASA NTRS · 19890028018
ac bidirectional motor controller
Abstract
Test data are presented and the design of a high-efficiency motor/generator controller at NASA-Lewis for use with the Space Station power system testbed is described. The bidirectional motor driver is a 20 kHz to variable frequency three-phase ac converter that operates from the high-frequency ac bus being designed for the Space Station. A zero-voltage-switching pulse-density-modulation technique is used in the converter to shape the low-frequency output waveform.
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Schreiner, K.. 1988-01-01. ac bidirectional motor controller. https://ntrs.nasa.gov/citations/19890028018
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