Patents Assigned to Allin-Bradley Company, LLC
  • Apparatus used with AC motors for compensating for turn on delay errors
    Patent number: 5850132
    Abstract: An apparatus for compensating for turn on delay distortions generated by a PWM controller. When turn on delay compensation is added to a PWM controller command signal and current zero crossings are inaccurately determined, compensation at the zero crossings causes further distortion which is reflected in a d and q-axis current vector frequency. Deviations from an ideal vector frequency are identified and used to modify command voltages to eliminate the zero crossing errors.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: December 15, 1998
    Assignee: Allin-Bradley Company, LLC
    Inventor: Luis J. Garces