The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2013
Filed:
Aug. 30, 2006
Lars Gertmar, Västerås, SE;
Hans Christian Christensen, Copenhagen, DK;
Erik Kolby Nielsen, Odense, DK;
Jouko Niiranen, Helsinki, FI;
Stefan Thorburn-johansson, Västerås, SE;
Leif-erik Wraee, Tommerup, DK;
Lars Gertmar, Västerås, SE;
Hans Christian Christensen, Copenhagen, DK;
Erik Kolby Nielsen, Odense, DK;
Jouko Niiranen, Helsinki, FI;
Stefan Thorburn-Johansson, Västerås, SE;
Leif-Erik Wraee, Tommerup, DK;
ABB Research Ltd., Zürich, CH;
Abstract
A wind mill apparatus for generating electric power to a grid point of an electric network. The apparatus includes a wind rotor, an electric generator operatively connected to the wind rotor, and an electric multiphase ac link operatively connecting the generator to the grid point. The ac link includes a first current path including a switchgear, a second current path including a dc link including a first converter operatively connected to the generator, a second converter operatively connected to the grid point, and a capacitor operatively connected between the conductors of the dc link. The ac link further includes a connectable multiphase dump load for blocking during a fault condition on the network the reactive power flow in the ac link, yet providing a reduced transfer of active power.