SUB-MODULE, PROTECTION UNIT, CONVERTER, AND CONTROL METHOD THEREOF

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United States of America Patent

APP PUB NO 20160126827A1
SERIAL NO

14891363

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Disclosed are a submodule structure formed of an energy storage element, a first turn-off device, a second turn-off device, a third turn-off device, a freewheeling diode, a series resistor, and diodes respectively in antiparallel connection with the turn-off devices, and a converter completely or partially formed of the submodules. Also disclosed are a relevant protection unit and a control method for the converter. The converter can be locked when a direct current (DC) fault occurs to prevent an alternating current (AC) system from injecting a fault current into a DC network, so that a transient fault of the DC network can be removed without tripping an AC line switch, thereby rapidly restarting the system. A charging resistor is comprised in the submodule so that a charging resistor disposed at an AC side of the converter can be reduced and even may not be disposed.

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Patent Owner(s)

Patent OwnerAddress
NR ELECTRIC CO LTD211102 NO 69 SU YUAN AVENUE JIANGNING DISTRICT JIANGSU NANJING NANJING CITY JIANGSU PROVINCE 211102
NR ENGINEERING CO LTD211102 NO 69 SU YUAN AVENUE JIANGNING DISTRICT JIANGSU NANJING NANJING CITY JIANGSU PROVINCE 211102

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
CAO, Dongming Nanjing, CN 23 75
DONG, Yunlong Nanjing, CN 31 62
LI, Haiying Nanjing, CN 49 142
TIAN, Jie Nanjing, CN 85 177
WANG, Nannan Nanjing, CN 44 99

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