Patents by Inventor Philipp Buttgenbach

Philipp Buttgenbach 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).

  • Patent number: 9953760
    Abstract: A transformer arrangement and transformer for mitigating transient voltage oscillations. The transformer included a transformer core enclosing at least one core leg. A winding is wound around one of the at least one core leg. The winding extends from a first winding terminal to a second winding terminal and includes a first winding section along a first conductor extending from the first winding terminal to a first intermediate end point, and a second winding section along a second conductor extending from a second intermediate end point to the second winding terminal. The transformer arrangement further includes an external passive electric component connected between the first intermediate end point and either the second intermediate end point or the second winding terminal arranged to decrease an effective difference between capacitive and inductive voltage distributions between the intermediate end points such that transient voltage oscillations in the winding are mitigated.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: April 24, 2018
    Assignee: ABB Research Ltd.
    Inventors: Dierk Bormann, Lars Liljestrand, Martin Carlen, Thorsten Steinmetz, Philipp Buttgenbach, Jens Tepper