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Title: Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.
 [1];  [1]
  1. (Roanoke, VA)
Issue Date:
OSTI Identifier:
General Electric Company (Schenectady, NY) IDO
Patent Number(s):
US 5486748
Contract Number:
Research Org:
Ford Motor Co
Country of Publication:
United States
method; apparatus; improved; efficiency; pulse-width-modulated; alternating; current; motor; drive; scheme; optimizing; operated; mode; provides; modulation; frequency; power; furnished; function; commanded; torque; requirements; modulation frequency; improved efficiency; motor drive; alternating current; motor torque; current motor; pulse-width-modulated alternating; pulse-width-modulated mode; mode provides; drive operated; /318/