Patents by Inventor Ingvar Apeland

Ingvar Apeland 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).

  • Phase-shifted resonant converter having reduced output ripple
    Patent number: 6970366
    Abstract: A power converter comprises a pair of resonant converter circuits coupled together in parallel and operated at respective switching frequencies that are out of phase. The power converter includes a first resonant converter circuit and a second resonant converter circuit operatively coupled together. The first resonant converter circuit includes at least one power switch adapted to convey power to a first resonant circuit and a first rectification stage adapted to rectify the conveyed power from the first resonant circuit. The second resonant converter circuit includes at least one power switch adapted to convey power to a second resonant circuit and a second rectification stage adapted to rectify the conveyed power from the second resonant circuit. A filter capacitor is coupled to the first and second rectification stages to provide DC output power therefrom.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: November 29, 2005
    Assignee: Power-One AS
    Inventors: Ingvar Apeland, Roar Myhre
  • Phase-shifted resonant converter having reduced output ripple
    Publication number: 20040196679
    Abstract: A power converter comprises a pair of resonant converter circuits coupled together in parallel and operated at respective switching frequencies that are out of phase. The power converter includes a first resonant converter circuit and a second resonant converter circuit operatively coupled together. The first resonant converter circuit includes at least one power switch adapted to convey power to a first resonant circuit and a first rectification stage adapted to rectify the conveyed power from the first resonant circuit. The second resonant converter circuit includes at least one power switch adapted to convey power to a second resonant circuit and a second rectification stage adapted to rectify the conveyed power from the second resonant circuit. A filter capacitor is coupled to the first and second rectification stages to provide DC output power therefrom.
    Type: Application
    Filed: April 3, 2003
    Publication date: October 7, 2004
    Inventors: Ingvar Apeland, Roar Myhre