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. 01, 2019
Filed:
Sep. 01, 2015
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventor:
Lennart Harnefors, Eskilstuna, SE;
Assignee:
ABB SCHWEIZ AG, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/12 (2006.01); H02J 3/01 (2006.01); H02J 3/24 (2006.01); H02M 5/257 (2006.01); G05B 19/02 (2006.01); H03L 7/08 (2006.01);
U.S. Cl.
CPC ...
H02J 3/24 (2013.01); H02M 5/257 (2013.01); G05B 19/02 (2013.01); H03L 7/08 (2013.01);
Abstract
A Voltage Source Converter control system for active damping of a resonance oscillation in the VSC includes a regular Phase-Locked Loop, and a slow PLL. The control system is arranged such that an imaginary part of the AD is obtainable from the slow PLL. The slow PLL is configured for having a closed-loop bandwidth which is less than a frequency, in a synchronous dq frame, of the resonance oscillation to be dampened.