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Title:
FULL-BRIDGE MMC ACTIVATION CONTROL METHOD, SYSTEM, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2018/188350
Kind Code:
A1
Abstract:
A full-bridge modular multilevel converter (MMC) activation control method and system: each phase bridge arm among a three-phase bridge arm comprises at least two sub-bridge arms, and each sub-bridge arm comprises thereon a full-bridge MMC sub-module; the direction of a current which flows through each sub-bridge arm is detected (S301); a working state of an auxiliary circuit breaker on a corresponding sub-bridge arm, which is connected in parallel to a full-bridge MMC sub-module, is determined according to the detected current direction (S302); whether the full-bridge MMC sub-module on the corresponding sub-bridge arm continues to carry out charging is determined by means of the working state of the auxiliary circuit breaker (S303). As such, direct current bus voltage will not experience significant sudden changes during unlocking, greatly reducing impact current during unlocking, and improving the security and reliability of a system.

Inventors:
LI, Tai (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
ZHANG, Ailing (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
JING, Xueji (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
PENG, Zhong (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
HU, Yongchang (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
CHEN, Peng (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
ZHANG, Yanhao (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
SU, Jinguo (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
LI, Yanmei (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
XIAO, Long (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
WU, Zhanfeng (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
SHEN, Shuaihua (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
DU, Shaolin (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
LU, Qinghua (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
SUN, Panlei (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
HUO, Chenghui (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
ZHENG, Kuncheng (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
ZHAO, Jing (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
ZHOU, Jinping (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
Application Number:
CN2017/113666
Publication Date:
October 18, 2018
Filing Date:
November 29, 2017
Export Citation:
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Assignee:
XJ GROUP CORPORATION (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
XJ ELECTRIC CO.,LTD (No. 1298, Xuji AvenueXuchang, Henan 0, 461000, CN)
STATE GRID CORPORATION OF CHINA (No. 86, Chang' an Avenue West Xicheng District, Beijing 1, 100031, CN)
International Classes:
H02M1/36
Foreign References:
CN102739030A2012-10-17
CN106981980A2017-07-25
CN101795057A2010-08-04
CN103280952A2013-09-04
US20140146586A12014-05-29
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (2nd Floor, Zhongguancun Intellectual Property Building Block B, No.21 Haidian South Road, Haidian District, Beijing 0, 100080, CN)
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