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:
Jun. 18, 2024
Filed:
Aug. 12, 2020
Applicant:
Vestas Wind Systems A/s, Aarhus N, DK;
Inventors:
Assignee:
VESTAS WIND SYSTEMS A/S, Aarhus N, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/00 (2007.01); H02J 3/38 (2006.01); H02M 1/32 (2007.01); H02M 7/483 (2007.01); H02M 7/5395 (2006.01);
U.S. Cl.
CPC ...
H02M 1/0095 (2021.05); H02J 3/381 (2013.01); H02M 1/322 (2021.05); H02M 7/483 (2013.01); H02M 7/4835 (2021.05); H02M 7/5395 (2013.01); H02J 2300/28 (2020.01);
Abstract
This disclosure proposes procedures and systems for discharging system capacitors and de-energizing power transmission systems having Modular Multilevel Converter (MMC) topologies by intelligent control of MMC cell components including configuration of bypass and insert switches using integrated DC choppers to effectively de-energize MMC cell capacitors and/or DC-link capacitors under operating conditions such as after a normal stop, for protection against over-voltages, dumping turbine energy, and under certain hardware fault conditions.