Title:
REDUNDANCY CONTROL METHOD OF MMC FOR STATCOM
Document Type and Number:
WIPO Patent Application WO/2017/115954
Kind Code:
A1
Abstract:
The present invention relates to a multilevel modular converter (MMC) applied to a static synchronous compensator (STATCOM) and, more particularly, to a redundancy control method of an MMC for a STATCOM, for continuously operating the MMC when an operating submodule breaks down in a state in which there is no more redundancy submodule to be applied, during an operation of the MMC. According to the present invention, a redundancy control method of an MMC, for a STATCOM, linked to the STATCOM and having a plurality of phases, wherein each phase includes a plurality of operating submodules and redundancy submodules, comprises the steps of: checking whether a breakdown has occurred in operating submodules of a first phase when all the redundancy submodules of the first phase, among the plurality of phases, are applied to the operation; and controlling such that an output voltage of each submodule of the first phase is raised so as to make the output voltage of the first phase the same as output voltages of other phases, when a breakdown of the submodules of the first phase occurs.
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Inventors:
HONG JUNG WON (KR)
KIM JUNE SUNG (KR)
JEONG JONG KYOU (KR)
KIM JUNE SUNG (KR)
JEONG JONG KYOU (KR)
Application Number:
PCT/KR2016/006639
Publication Date:
July 06, 2017
Filing Date:
June 22, 2016
Export Citation:
Assignee:
HYOSUNG CORP (KR)
International Classes:
H02M1/32; H02M7/49
Domestic Patent References:
| WO2015155112A1 | 2015-10-15 |
Foreign References:
| US5986909A | 1999-11-16 | |||
| KR20140051810A | 2014-05-02 | |||
| JP2012044839A | 2012-03-01 | |||
| JP2011182517A | 2011-09-15 |
Attorney, Agent or Firm:
NAMCHON PATENT AND LAW FIRM (KR)
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