Patents by Inventor Hallvard Breistein

Hallvard Breistein 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).

  • Frequency converter
    Patent number: 8587141
    Abstract: The inventions relates to a system for conditioning of power from a turbine, the turbine comprising at least one turbine blade (1) connected to a rotating hub (2), the rotating hub (2) is arranged to drive a generator (5). The generator is a multi pole synchronous generator (5) connected via a plurality of galvanic isolated three-phase cables (11) to a multi level frequency converter (25), the generator (5) also being arranged to feed current to the frequency converter (25) through the three-phase cables (11). The multi level frequency converter (25) is constituted by a plurality of elements arranged in columns and coupled in cascading order to add inverted voltage.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: November 19, 2013
    Assignee: Aker Engineering & Technology AS
    Inventors: Ole Johan Bjerknes, Hallvard Breistein