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:
Jul. 17, 2007
Filed:
Sep. 13, 2002
Lennart Ängquist, Enköping, SE;
Per Halvarsson, Västerås, SE;
Lars Liljestrand, Västerås, SE;
Stefan Valdemarsson, Lidköping, SE;
Claes Bengtsson, Ludvika, SE;
Willie Wong, Cary, NC (US);
Lennart Ängquist, Enköping, SE;
Per Halvarsson, Västerås, SE;
Lars Liljestrand, Västerås, SE;
Stefan Valdemarsson, Lidköping, SE;
Claes Bengtsson, Ludvika, SE;
Willie Wong, Cary, NC (US);
ABB AB, Västerås, SE;
Abstract
An electric network for generation and transmission of electric power, including a power generating part, a point of common connection for the power generating part, a transmission link, a load network, and a reactive power compensator. The transmission link is coupled between the point of common connection and a grid connection point at the load network. The reactive power compensator is coupled to transmission link. The power generating part includes at least one wind turbine with an electric generator of induction type, coupled to the point of common connection. The reactive power compensator includes a capacitor bank and in parallel coupling to the capacitor bank a controllable inductor having a magnetic core, a main winding for alternating current, and a DC-control winding for direct current. The DC-control winding for control of the magnetic flux is set up by the main winding via orthogonal magnetization of the core.