Patents by Inventor Steven John Fredette

Steven John Fredette 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).

  • System and method of dynamic regulation of real power to a load
    Patent number: 9148083
    Abstract: A system and method for controlling an AC motor drive includes a control system programmed with an algorithm configured to optimize operation of the motor drive. Specifically, the control system is programmed to input an initial voltage-frequency command to the drive. The initial voltage-frequency command includes a voltage reference and a frequency reference corresponding to an operating point of an initial voltage/frequency (V/Hz) curve. The control system monitors a real-time output of the drive, modifies the voltage reference based on the real-time output of the drive, and transmits a modified voltage-frequency command to the drive. The modified voltage-frequency command corresponds to an operating point of a modified V/Hz curve defined by the modified voltage reference and the initial V/Hz curve.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: September 29, 2015
    Assignee: Eaton Corporation
    Inventors: Eric Jon Olsson, Bin Lu, Ting Yan, Steven John Fredette, Charles John Luebke
  • SYSTEM AND METHOD OF DYNAMIC REGULATION OF REAL POWER TO A LOAD
    Publication number: 20120280645
    Abstract: A system and method for controlling an AC motor drive includes a control system programmed with an algorithm configured to optimize operation of the motor drive. Specifically, the control system is programmed to input an initial voltage-frequency command to the drive. The initial voltage-frequency command includes a voltage reference and a frequency reference corresponding to an operating point of an initial voltage/frequency (V/Hz) curve. The control system monitors a real-time output of the drive, modifies the voltage reference based on the real-time output of the drive, and transmits a modified voltage-frequency command to the drive. The modified voltage-frequency command corresponds to an operating point of a modified V/Hz curve defined by the modified voltage reference and the initial V/Hz curve.
    Type: Application
    Filed: July 18, 2012
    Publication date: November 8, 2012
    Inventors: Eric Jon Olsson, Bin Lu, Ting Yan, Steven John Fredette, Charles John Luebke
  • System and method of dynamic regulation of real power to a load
    Patent number: 8232760
    Abstract: A system and method for controlling an AC motor drive includes a control system programmed with an energy algorithm configured to optimize operation of the motor drive. Specifically, the control system input an initial voltage-frequency command to the AC motor drive based on an initial voltage/frequency (V/Hz) curve, receives a real-time output of the AC motor drive generated according to the initial voltage-frequency command, and feedback a plurality of modified voltage-frequency commands to the AC motor drive, each of the plurality of modified voltage-frequency commands comprising a deviation from the initial V/Hz curve. The control system also determines a real-time value of the motor parameter corresponding to each of the plurality of modified voltage-frequency commands, and feeds back a modified voltage-frequency command to the AC motor drive so that the real-time value of the motor parameter is within a motor parameter tolerance range.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: July 31, 2012
    Assignee: Easton Corporation
    Inventors: Bin Lu, Ting Yan, Steven John Fredette, Charles John Luebke
  • SYSTEM AND METHOD OF DYNAMIC REGULATION OF REAL POWER TO A LOAD
    Publication number: 20100315034
    Abstract: A system and method for controlling an AC motor drive includes a control system programmed with an energy algorithm configured to optimize operation of the motor drive. Specifically, the control system input an initial voltage-frequency command to the AC motor drive based on an initial voltage/frequency (V/Hz) curve, receives a real-time output of the AC motor drive generated according to the initial voltage-frequency command, and feedback a plurality of modified voltage-frequency commands to the AC motor drive, each of the plurality of modified voltage-frequency commands comprising a deviation from the initial V/Hz curve. The control system also determines a real-time value of the motor parameter corresponding to each of the plurality of modified voltage-frequency commands, and feeds back a modified voltage-frequency command to the AC motor drive so that the real-time value of the motor parameter is within a motor parameter tolerance range.
    Type: Application
    Filed: August 14, 2009
    Publication date: December 16, 2010
    Inventors: Bin Lu, Ting Yan, Steven John Fredette, Charles John Luebke