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:
Oct. 08, 2013
Filed:
Jun. 30, 2010
Bertil Berggren, Vasteras, SE;
Rajat Majumder, Raleigh, NC (US);
Charles Sao, Västerås, SE;
Kerstin Linden, Ludvika, SE;
Bertil Berggren, Vasteras, SE;
Rajat Majumder, Raleigh, NC (US);
Charles Sao, Västerås, SE;
Kerstin Linden, Ludvika, SE;
ABB Research Ltd, Zurich, CH;
Abstract
A method for controlling power flow within a DC power flow within a DC power transmission network includes two or more interconnected converter stations. The method includes the steps of: establishing a common feedback signal (U, Ũ) to the converter stations, the common feedback signal (U, Ũ) being based on an overall voltage level in the DC transmission, power network; providing, in the converter stations, a control signal (S, S, S, S) based on the common feedback signal (U) and a drooped error signal (P, U); and controlling the power flow within the DC power transmission network towards set operating points (U,) by using the control signal (S, S, S, S). A control device and computer program product is also described.