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. 09, 2015
Filed:
Dec. 28, 2012
Lsis Co., Ltd., Anyang-si, Gyeonggi-do, KR;
Industry-academic Cooperation Foundation, Yonsei University, Seoul, KR;
Seung Taek Baek, Anyang-si, KR;
Gum Tae Son, Seoul, KR;
Kyeon Hur, Seoul, KR;
Jung Wook Park, Seoul, KR;
Hee Jin Lee, Seoul, KR;
Yong Ho Chung, Ansan-si, KR;
Wook Hwa Lee, Incheon, KR;
LSIS Co., Ltd., Anyang-Si, Gyeonggi-Do, KR;
Industry-Academic Cooperation Foundation, Yonsei University, Seoul, KR;
Abstract
A method of controlling a multilevel converter is provided. In the method of controlling a multilevel converter according to an embodiment, a sub-module having the maximum voltage and a sub-module having the minimum voltage respectively are extracted from among a plurality of sub-modules. An amount of state variation of each of the plurality of sub-modules is determined. When the amount of state variation is not determined to be 0, a direction of a current flowing through the plurality of sub-modules is detected. A subsequent state of at least one sub-module is determined according to at least one of the amount of the state variation and current direction. Subsequently an arrangement time for sub-module values can be efficiently reduced while the number of the sub-modules increases in the voltage balancing.