Patents by Inventor Antonios TZIMAS

Antonios TZIMAS 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).

  • Ripple control and optimisation in a power transmission network
    Patent number: 10790661
    Abstract: There is disclosed a controller (112) for a power electronic network element (110) of a power transmission network (100), wherein the controller (112) is configured to vary a control parameter of the network element (110) which at least partly determines a ripple profile in a transmission line of the network. The controller (112) is configured to vary the control parameter between at least a first value and second value to cause the ripple profile in the transmission line to change; and the controller is configured to vary the control parameter periodically or in response to a signal indicating a threshold temperature at a hotspot location along the transmission line. A method of optimising control parameters for a power transmission network (100) is also disclosed.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: September 29, 2020
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Andrzej Adamczyk, Rosemary King, Antonios Tzimas
  • Control of high-voltage, direct current systems
    Patent number: 10680441
    Abstract: The present invention provides methods and apparatus for controlling HVDC power transmission systems so as to increase the effective lifetime of cables carrying the DC power (and particularly the extruded polymer insulation of those cables). The method includes entering a maintenance mode in which the electrical properties applied to the cable are varied so as to facilitate diffusion of space charge accumulation in the extruded polymer insulation.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: June 9, 2020
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Antonios Tzimas, Guillaume Lucas, Kevin Dyke
  • RIPPLE CONTROL AND OPTIMISATION IN A POWER TRANSMISSION NETWORK
    Publication number: 20200059095
    Abstract: There is disclosed a controller (112) for a power electronic network element (110) of a power transmission network (100), wherein the controller (112) is configured to vary a control parameter of the network element (110) which at least partly determines a ripple profile in a transmission line of the network. The controller (112) is configured to vary the control parameter between at least a first value and second value to cause the ripple profile in the transmission line to change; and the controller is configured to vary the control parameter periodically or in response to a signal indicating a threshold temperature at a hotspot location along the transmission line. A method of optimising control parameters for a power transmission network (100) is also disclosed.
    Type: Application
    Filed: January 31, 2018
    Publication date: February 20, 2020
    Inventors: Andrzej Adamczyk, Rosemary King, Antonios Tzimas
  • CONTROL OF HIGH-VOLTAGE, DIRECT CURRENT SYSTEMS
    Publication number: 20190296553
    Abstract: The present invention provides methods and apparatus for controlling HVDC power transmission systems so as to increase the effective lifetime of cables carrying the DC power (and particularly the extruded polymer insulation of those cables). The method includes entering a maintenance mode in which the electrical properties applied to the cable are varied so as to facilitate diffusion of space charge accumulation in the extruded polymer insulation.
    Type: Application
    Filed: May 9, 2017
    Publication date: September 26, 2019
    Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Antonios TZIMAS, Guillaume LUCAS, Kevin Dyke