Patents by Inventor Per-Olov Hedblad

Per-Olov Hedblad 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).

  • Circuit breaking arrangement
    Patent number: 9705312
    Abstract: A circuit breaking arrangement is adapted to be connected to a current path in at least one transmission line arranged to carry an electrical current for controllably effecting discontinuation of flow of electrical current in the at least one transmission line. The circuit breaking arrangement includes a plurality of series connections of a plurality of power semiconductor switching elements. The plurality of series connections of power semiconductor switching elements are connected in parallel relatively to each other.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: July 11, 2017
    Assignee: ABB SCHWEIZ AG
    Inventors: Per-Olov Hedblad, Reza Derakhshanfar
  • CIRCUIT BREAKING ARRANGEMENT
    Publication number: 20160336737
    Abstract: A circuit breaking arrangement is adapted to be connected to a current path in at least one transmission line arranged to carry an electrical current for controllably effecting discontinuation of flow of electrical current in the at least one transmission line. The circuit breaking arrangement includes a plurality of series connections of a plurality of power semiconductor switching elements. The plurality of series connections of power semiconductor switching elements are connected in parallel relatively to each other.
    Type: Application
    Filed: December 20, 2013
    Publication date: November 17, 2016
    Applicant: ABB TECHNOLOGY LTD
    Inventors: Per-Olov HEDBLAD, Reza DERAKHSHANFAR
  • Converter for converting alternating voltage into direct voltage and conversely
    Patent number: 8107266
    Abstract: A converter for converting alternating voltage into direct voltage and vice versa in a converter station of a high voltage transmission system including a series connection of a plurality of converter valves. The converter has connections to transformers on both of two opposite sides of the converter valves.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: January 31, 2012
    Assignee: ABB Technology Ltd.
    Inventors: Patrik Karlsson, Stellan Dahlgren, Fabienne Chataignere, Per-Olov Hedblad
  • CONVERTER
    Publication number: 20090303758
    Abstract: A converter for converting alternating voltage into direct voltage and vice versa in a converter station of a high voltage transmission system including a series connection of a plurality of converter valves. The converter has connections to transformers on both of two opposite sides of the converter valves.
    Type: Application
    Filed: June 15, 2006
    Publication date: December 10, 2009
    Applicant: ABB Technology Ltd.
    Inventors: Per-Olov Hedblad, Patrik Karlsson, Stellan Dahlgren, Fabienne Chataignere