Patents by Inventor Stephane BREHAUT

Stephane BREHAUT 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).

  • Patent number: 10361622
    Abstract: In the field of high voltage direct current power transmission and distribution there is provided a converter which includes first and second DC terminals for connection to a DC electrical network and between which extends converter limbs. Each converter limb includes first and second limb portions that are separated by an AC terminal for connection to a respective phase of a multi-phase AC electrical network. Each limb portion includes a current sensor to measure current flowing in the corresponding limb portion. The converter also includes further current sensors, located elsewhere in the converter, and a current sensor management unit. The current sensor management unit is programmed to: receive a measured current value from each current sensor; identify at least one faulty current sensor from the received measured current values; and replace the measured current value of the or each identified faulty current sensor with a calculated current value.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: July 23, 2019
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Guillaume Depreville, Stephane Brehaut
  • Publication number: 20180358888
    Abstract: In the field of high voltage direct current power transmission and distribution there is provided a converter which includes first and second DC terminals for connection to a DC electrical network and between which extends converter limbs. Each converter limb includes first and second limb portions that are separated by an AC terminal for connection to a respective phase of a multi-phase AC electrical network. Each limb portion includes a current sensor to measure current flowing in the corresponding limb portion. The converter also includes further current sensors, located elsewhere in the converter, and a current sensor management unit. The current sensor management unit is programmed to: receive a measured current value from each current sensor; identify at least one faulty current sensor from the received measured current values; and replace the measured current value of the or each identified faulty current sensor with a calculated current value.
    Type: Application
    Filed: November 22, 2016
    Publication date: December 13, 2018
    Inventors: Guillaume DEPREVILLE, Stephane BREHAUT
  • Publication number: 20180166877
    Abstract: A voltage source converter comprises a converter arm extending between two terminals each terminal being connectable to a or a respective electrical network, the converter arm including a valve that includes at least one module, the or each module being operable to selectively provide a voltage source; and a controller programmed to selectively operate the valve to clamp a voltage at either or both of the two terminals and thereby operate the valve as a current limiter to limit a selected current flowing in the converter arm at or below a fixed or variable current threshold.
    Type: Application
    Filed: February 25, 2016
    Publication date: June 14, 2018
    Inventors: Guillaume DEPREVILLE, Stephane BREHAUT