发明名称 |
SUB-MODULE, PROTECTION UNIT, CONVERTER, AND CONTROL METHOD THEREOF |
摘要 |
Disclosed are a sub-module 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 sub-modules. 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 sub-module so that a charging resistor disposed at an AC side of the converter can be reduced and even may not be dispose. |
申请公布号 |
EP2999103(A1) |
申请公布日期 |
2016.03.23 |
申请号 |
EP20140797222 |
申请日期 |
2014.05.05 |
申请人 |
NR ELECTRIC CO., LTD.;NR ENGINEERING CO., LTD |
发明人 |
DONG, YUNLONG;CAO, DONGMING;TIAN, JIE;LI, HAIYING;WANG, NANNAN |
分类号 |
H02M1/32;H02M7/483 |
主分类号 |
H02M1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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