Tripolar VSC-HVDC transmission system and method

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United States of America Patent

PATENT NO 9948104
SERIAL NO

15111216

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Abstract

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A tripolar VSC-HVDC system and method include a rectifier and an inverter formed by a three-phase six-bridge arms modular multilevel converter (MMC) respectively, and two converter valves are arranged on the DC side of the rectifier and inverter respectively. The midpoint of upper and lower converter valves of the rectifier and inverter are connected with a pole 3 DC line by a smoothing reactor. Triggering of the upper and lower converter valves is controlled to change the DC voltage polarity of the pole 3 periodically, and tripolar DC transmission is realized by modulating current orders of the three poles.

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Patent Owner(s)

Patent OwnerAddress
NR ELECTRIC CO LTDNO 69 SUYUAN AVENUE JIANGNING NANJING JIANGSU 211102 211102
NR ELECTRIC ENGINEERING CO LTDNO 69 SUYUAN AVENUE JIANGNING DISTRICT NANJING JIANGSU 211102

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hu, Ming Jiangsu, CN 199 711
Jiao, Xinyan Jiangsu, CN 1 1
Lu, Yu Jiangsu, CN 262 4115
Shao, Zhenxia Jiangsu, CN 2 3
Shen, Gang Jiangsu, CN 85 561
Tian, Jie Jiangsu, CN 40 56

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