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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.:

US 9444322 B1

PDFFull Text
Date of Patent:
Sep. 13, 2016

Filed:

Oct. 25, 2013

Method for suppressing circulating current in modular multilevel converter for high voltage direct-current transmission

Applicant:

Korea Electrotechnology Research Institute, Gyeongsangnam-do, KR;

Inventors:

Jung Woo Park, Gyeongsangnam-do, KR;

Dae Wook Kang, Gyeongsangnam-do, KR;

Jong Hyun Kim, Gyeongsangnam-do, KR;

Dong Wook Yoo, Gyeongsangnam-do, KR;

Ji Woo Moon, Busan, KR;

Jin Soo Kwon, Gyeongsangnam-do, KR;

Chun Sung Kim, Gyeongsangnam-do, KR;

Deuk Woo Bae, Gyeongsangnam-do, KR;

Assignee:

Korea Electrotechnology Research Institute, Gyeongsangnam-Do, KR;

Attorney:

Frommer Lawrence & Haug LLP

Primary Examiner:

Adolf Berhane

Assistant Examiner:

Jye-June Lee

Int. Cl.
CPC ...
H02M 1/12 (2006.01); H02M 1/15 (2006.01); H02M 7/483 (2007.01); H02M 5/458 (2006.01); H02J 3/36 (2006.01);
U.S. Cl.
CPC ...
H02M 1/12 (2013.01); H02M 1/15 (2013.01); H02M 7/483 (2013.01); H02J 3/36 (2013.01); H02M 5/4585 (2013.01); H02M 2007/4835 (2013.01); Y02E 60/60 (2013.01);
Abstract

Provided is a method for suppressing a circulating current in a modular multi-level converter for a high voltage direction-current (HVDC) transmission system. The HVDC transmission system converts an alternating current (AC) into a direct current (DC) and vice versa, transmits energy using a DC cable, and including a modular multilevel converter generating a high voltage source by stacking a plurality of sub-modules in series. In the circulating current suppression method, a circulating current (i; j=a,b,c) of a,b,c phase in an abc 3-phase stationary reference frame, a DC current (i) flowing in a DC cable, a current reference value (i*) of a DC component that needs to flow in the DC cable are inputted. The circulating current (i) of the a,b,c phase is controlled to become zero. A compensation value (V*) for suppressing a harmonic component of the circulating current is outputted.

Find Patent Forward Citations

Park, Jung. (2016). Method for suppressing circulating current in modular multilevel converter for high voltage direct-current transmission (U.S. Patent No. 9444322). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9444322

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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