Patents by Inventor Krushna Mohapatra

Krushna Mohapatra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • OPEN-ENDED CONTROL CIRCUIT FOR ELECTRICAL APPARATUS
    Publication number: 20080049460
    Abstract: An AC machine control system for an AC machine (motor, generator, transformer, etc.) having open-ended windings, the control system comprising a drive circuit configured to transfer AC power between a first set of voltages and each end of the open-ended windings without the use of a substantial energy storage device, while eliminating common mode voltage and/or injecting zero sequence voltages.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 28, 2008
    Applicant: Regents of the University of Minnesota
    Inventors: Ned Mohan, Krushna Mohapatra
  • CARRIER-BASED PULSE-WIDTH MODULATION (PWM) CONTROL FOR MATRIX CONVERTERS
    Publication number: 20070268728
    Abstract: A matrix converter includes a plurality of switches that electrically connect a multi-phase input voltage source to a multi-phase load; and a controller to output pulse-width modulated (PWM) switching signals to control the switches to produce a multi-phase output voltage from the multi-phase input voltage source. The controller outputs the PWM switching signals by modulating a carrier signal with a time-varying signal having a frequency determined from a desired output frequency for the output voltage.
    Type: Application
    Filed: May 22, 2007
    Publication date: November 22, 2007
    Applicant: Regents of the University of Minnesota
    Inventors: Ned Mohan, Krushna Mohapatra, Satish Thuta, Gaurav Aggarwal, Philip Jose