Patents by Inventor Jeffrey Alan Fieldhouse

Jeffrey Alan Fieldhouse 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).

  • Perturb voltage as a decreasing non-linear function of converter power
    Patent number: 8461820
    Abstract: Methods, apparatus and media for controlling a switching circuit controlling an amount of power drawn from an energy converter, to optimize the amount of power drawn from the energy converter. An output voltage and an output current of the energy converter are measured to produce signals representing converter output voltage and current. Converter power is calculated from the product of the converter output voltage and current. A perturb voltage is calculated as a decreasing nonlinear function of the converter power. A new reference voltage signal representing a desired converter output voltage is produced in response to a previous reference voltage signal and the perturb voltage. The reference voltage signal is used by the switching circuit to adjust the power drawn from the converter to achieve the desired converter output voltage.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: June 11, 2013
    Assignee: Schneider Electric USA, Inc.
    Inventors: Jeffrey Alan Fieldhouse, Zoran Miletic
  • Perturb voltage as a decreasing non-linear function of converter power
    Publication number: 20100176771
    Abstract: Methods, apparatus and media for controlling a switching circuit controlling an amount of power drawn from an energy converter, to optimize the amount of power drawn from the energy converter. An output voltage and an output current of the energy converter are measured to produce signals representing converter output voltage and current. Converter power is calculated from the product of the converter output voltage and current. A perturb voltage is calculated as a decreasing nonlinear function of the converter power. A new reference voltage signal representing a desired converter output voltage is produced in response to a previous reference voltage signal and the perturb voltage. The reference voltage signal is used by the switching circuit to adjust the power drawn from the converter to achieve the desired converter output voltage.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 15, 2010
    Applicant: XANTREX TECHNOLOGY INC.
    Inventors: Jeffrey Alan Fieldhouse, Zoran Miletic