1987•NASA Tech BriefsRequires access
Computerized Torque Control for Large dc Motors
Richard Marinus Willett, Michael J. Carroll, Ronald V. Geiger
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Abstract
Speed and torque ranges in generator mode extended. System of shunt resistors, electronic switches, and pulse-width modulation controls torque exerted by large, three-phase, electronically commutated dc motor. Particularly useful for motor operating in generator mode because it extends operating range to low torque and high speed.