Patents by Inventor Martin Butcher

Martin Butcher 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).

  • Power systems
    Patent number: 10790772
    Abstract: A method of controlling a power system that includes an electrical machine, e.g., wind turbine generator, a power converter, a DC circuit and a dynamic braking system (DBS) having a braking circuit having a braking resistor and being connected in series to the DC circuit, is provided. The method includes operating the DBS and controlling operation of the electrical machine based on a prevailing temperature of the braking circuit, stopping the electrical machine and controlling the electrical machine to be restarted at its rated output power once the prevailing temperature of the braking resistor reaches or falls below a lower temperature threshold. The electrical machine may be restarted at a lower output power and after restarting, its output power can be increased based on a power starting profile as the braking resistor cools.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: September 29, 2020
    Assignee: GE ENERGY POWER CONVERSION TECHNOLOGY LTD
    Inventors: Aravazhi Anabarasu, Ramasamy Anabarasu, Martin Butcher, Allan Crane
  • POWER SYSTEMS
    Publication number: 20190245465
    Abstract: A method of controlling a power system that includes an electrical machine, e.g., wind turbine generator, a power converter, a DC circuit and a dynamic braking system (DBS) having a braking circuit having a braking resistor and being connected in series to the DC circuit, is provided. The method includes operating the DBS and controlling operation of the electrical machine based on a prevailing temperature of the braking circuit, stopping the electrical machine and controlling the electrical machine to be restarted at its rated output power once the prevailing temperature of the braking resistor reaches or falls below a lower temperature threshold. The electrical machine may be restarted at a lower output power and after restarting, its output power can be increased based on a power starting profile as the braking resistor cools.
    Type: Application
    Filed: February 5, 2019
    Publication date: August 8, 2019
    Inventors: Aravazhi ANABARASU, Ramasamy ANABARASU, Martin BUTCHER, Allan CRANE
  • VARIABLE SPEED DUAL FUELED ENGINE AND ELECTRICAL POWER MANAGEMENT APPARATUS AND METHODS
    Publication number: 20140182560
    Abstract: A fuel system is provided for use with a variable speed dual fuel engine. The fuel system comprises a first fuel injector configured for supplying diesel fuel to the engine, a second fuel injector configured for supplying natural gas to the engine, and a fuel controller configured to implement a diesel injection schedule and a natural gas injection schedule based on at least a fuel map, an optimal engine speed and a current engine speed.
    Type: Application
    Filed: December 10, 2013
    Publication date: July 3, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Frank Veit, Brandon Larson, Paul Gemin, Ramesh Krishnan, Martin Butcher, Roy Primus, Rekha Prasad
  • Silica particulates
    Patent number: 6197875
    Abstract: A particulate silica which has been treated with a polymer oil jelly.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: March 6, 2001
    Assignee: Rhodia Limited
    Inventors: Ian Malcolm Mackinnon, Douglas Martin Butcher