Patents by Inventor Bo Akesson

Bo Akesson 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).

  • HVDC converter system with transformer functions or arrangements integrated into a single transformer unit
    Patent number: 9948199
    Abstract: An AC-AC converter system includes transformer arrangements and HVDC converter units on primary and secondary sides of the system, respectively. The system exhibits first and second three-phase AC networks, and the converter units are interconnected via a DC connection. By integrating at least part of two transformer arrangements in one transformer unit, a cost efficient transformer configuration can be achieved.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: April 17, 2018
    Assignee: ABB Schweiz AG
    Inventors: Mats Berglund, Bo Akesson
  • HVDC Converter
    Publication number: 20140362619
    Abstract: An AC-AC converter system includes transformer arrangements and HVDC converter units on primary and secondary sides of the system, respectively. The system exhibits first and second three-phase AC networks, and the converter units are interconnected via a DC connection. By integrating at least part of two transformer arrangements in one transformer unit, a cost efficient transformer configuration can be achieved.
    Type: Application
    Filed: August 22, 2014
    Publication date: December 11, 2014
    Inventors: Mats Berglund, Bo Akesson
  • Device for energizing a voltage-source converter
    Patent number: 6337802
    Abstract: A voltage-source converter is connected on its ac-voltage side to a three-phase electric power network via a transformer and on its dc-voltage side to capacitor equipment. The transformer has on its secondary side a first, a second, and a third phase winding, each one with a first and a second winding terminal. Resistor equipment is arranged at the transformer for limiting the current through the converter when connecting the transformer to the power network.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: January 8, 2002
    Assignee: ABB AB
    Inventors: Tomas Larsson, Bjorn Thorvaldsson, Bo Akesson