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:
Jan. 12, 2021
Filed:
Dec. 15, 2016
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventors:
Alessandro Guerriero, Paglieta, IT;
Filippo Lalli, Loro Ciuffenna, IT;
Silvio Scaletti, Civitella in Val di Chiana, IT;
Tiberio Bucci, Lastra a Signa, IT;
Assignee:
ABB Schweiz AG, Baden, CH;
Primary Examiner:
Int. Cl.
CPC ...
H02J 1/00 (2006.01); H02J 3/00 (2006.01); H02J 3/38 (2006.01); G01R 19/25 (2006.01); G01R 31/42 (2006.01);
U.S. Cl.
CPC ...
H02J 3/388 (2020.01); G01R 19/2513 (2013.01); G01R 31/42 (2013.01); H02J 3/381 (2013.01); H02J 2300/24 (2020.01); H02J 2300/28 (2020.01);
Abstract
A method for detecting an islanding condition of a grid connected energy conversion system and related DC/AC converter apparatus to optimize performance in terms of preservation of the power quality, provide synchronized frequency perturbation for all the inverters of a plant, provide shut down capability within the time requested by utilities and safety standards and provide immunity to grid frequency fluctuations.