Patents by Inventor Robert John Breitzmann

Robert John Breitzmann 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).

  • Method and apparatus for rejecting the second harmonic current in an active converter with an unbalanced AC line voltage source
    Patent number: 7355865
    Abstract: A method and apparatus for altering converter control as a function of the degree of unbalance in supply line voltages to substantially eliminate second harmonics on the supply lines caused by active control of the converter including identifying supply line peak amplitude values and using the peak values to identify potential second harmonics and then altering command values as a function of the potential second harmonic components.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: April 8, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Semyon Royak, Robert John Breitzmann
  • Modified field oriented control
    Patent number: 7135834
    Abstract: In accordance with certain embodiments, the present technique provides a reduced current field-oriented-control scheme. For example, the present technique provides a method of controlling an induction device in which a predetermined reduction factor is employed to reduce the flux-current vector of a field-oriented-control scheme. By reducing this vector, less current and less power are drawn by the induction device, in turn reducing resistive heating and stator core losses, for instance.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: November 14, 2006
    Assignee: Reliance Electric Technologies, LLC
    Inventors: Michael J. Melfi, Robert John Breitzmann