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:
Feb. 24, 2026
Filed:
Feb. 05, 2024
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventors:
Lennart Harnefors, Västerås, SE;
Ioannis Tsoumas, Zürich, CH;
Assignee:
ABB Schweiz AG, Baden, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 3/24 (2006.01); F03D 7/04 (2006.01); H02J 3/36 (2006.01); H02J 3/38 (2006.01);
U.S. Cl.
CPC ...
F03D 7/048 (2013.01); H02J 3/381 (2013.01); F05B 2270/337 (2013.01); H02J 2300/28 (2020.01);
Abstract
A method of controlling a wind farm including a plurality of wind turbines installed in an AC subgrid, which is connected via a high-voltage rectifier and a DC line to an energy conversion device, the method including: controlling a power infeed of each wind turbine to maintain a setpoint grid frequency of the subgrid; sensing a grid frequency in the subgrid; determining a reference quantity based on a difference of the sensed grid frequency and the setpoint grid frequency; and controlling the energy conversion device in accordance with the determined reference quantity.