ac bidirectional motor controllerTest 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.
Document ID
19890028018
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Schreiner, K. (General Dynamics Corp. Space Systems Div., San Diego, CA, United States)