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公开(公告)号：EP3780040A1
公开(公告)日：2021-02-17
申请号：EP18920773.1
申请日：2018-10-19
发明人： DONG, Wei , GAO, Chong , ZHOU, Jianhui , PANG, Hui
摘要： Disclosed by an embodiment of the present application is a wideband voltage transformer, comprising: a hollow insulator, metal flanges, fixed flanges, a resistance capacitance voltage-equalizing assembly, a resistance capacitance series-parallel voltage divider, a base, and a signal collecting module; the metal flanges are mounted at two ends of the hollow insulator, the metal flange of a top end of the hollow insulator is connected to a first system, and the metal flange of a bottom end of the hollow insulator is connected to the base; the fixed flanges are mounted at inner walls of the metal flanges, and two ends of the resistance capacitance voltage-equalizing assembly are respectively connected to the fixed flanges; a top end of the resistance capacitance series-parallel voltage divider is connected to the first system, and a bottom end of the resistance capacitance series-parallel voltage divider is connected to the signal collecting module.
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公开(公告)号：EP3393030B1
公开(公告)日：2020-10-07
申请号：EP17842648.2
申请日：2017-05-22
发明人： TANG, Guangfu , HE, Zhiyuan , WANG, Xinying , WEI, Xiaoguang , PANG, Hui , ZHANG, Sheng , WANG, Chenghao , GAO, Yang , KE, Jinkun , YANG, Bingjian , ZHOU, Wandi , ZHANG, Ning , LIU, Yuan , DING, Xiao
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公开(公告)号：EP3393030A1
公开(公告)日：2018-10-24
申请号：EP17842648.2
申请日：2017-05-22
发明人： TANG, Guangfu , HE, Zhiyuan , WANG, Xinying , WEI, Xiaoguang , PANG, Hui , ZHANG, Sheng , WANG, Chenghao , GAO, Yang , KE, Jinkun , YANG, Bingjian , ZHOU, Wandi , ZHANG, Ning , LIU, Yuan , DING, Xiao
IPC分类号： H02M3/155
CPC分类号： H02M3/155 , H02M1/14 , H02M3/158 , H02M2007/4835
摘要： A Direct Current (DC)-DC conversion system and a control method thereof are provided. The system includes a phase element and a controller. The phase element includes multiple bridge arms. The multiple bridge arms are in star connection and form a common terminal and multiple output terminals. Each of the bridge arms includes a variable voltage source. The controller is connected to each of the variable voltage sources, and is configured to control a voltage of each of the variable voltage sources. Compared with the conventional art, the DC-DC conversion system and control method thereof provided by the invention have the advantages that each of the bridge arms in the phase element forms star connection, so that a circulation current for energy balance only circulates in the system, rather than flowing into a DC system. In addition, the system adopts relatively smaller numbers of power electronic devices and filters, so that the system may be applied to the field of high-voltage high-capacity DC power transmission and may reduce limits of inductive devices to DC power transmission of the DC-DC conversion system.
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公开(公告)号：EP3024109B1
公开(公告)日：2019-02-13
申请号：EP14826983.0
申请日：2014-07-11
申请人： State Grid Corporation of China (SGCC) , State Grid Smart Grid Research Institute , China-Epri Electric Power Engineering Co. Ltd.
发明人： TANG, Guangfu , XIE, Minhua , JIANG, Xirui , GAO, Yang , WANG, Renqiu , YANG, Yuefeng , PANG, Hui , LU, Jianliang , YANG, Bingjian
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5.发明公开
公开(公告)号：EP3024109A1
公开(公告)日：2016-05-25
申请号：EP14826983.0
申请日：2014-07-11
申请人： State Grid Corporation of China (SGCC) , State Grid Smart Grid Research Institute , China-Epri Electric Power Engineering Co. Ltd.
发明人： TANG, Guangfu , XIE, Minhua , JIANG, Xirui , GAO, Yang , WANG, Renqiu , YANG, Yuefeng , PANG, Hui , LU, Jianliang , YANG, Bingjian
CPC分类号： H02M7/483 , H02J3/36 , H02M2001/0003 , H02M2007/4835 , Y02E60/60
摘要： The present invention relates to a valve basic control device and method of a module multilevel converter. The module multilevel converter is provided with a bridge arm including a plurality of cascaded sub-modules, and the converter valve basic control device in a hierarchical control architecture, that includes: a current control unit, used for controlling a current of the converter, generating an input number of the sub-modules of the bridge arm in real time, obtaining a current direction of the bridge arm and sending number information and current direction information; a bridge arm summary control unit, used for determining sub-modules to be input or removed according to the received state of each sub-module and the number information and the current direction information received from the current control unit, and sending a determination result; and a bridge arm segmented control unit, used for inputting or removing the sub-modules according to the determination result received from the bridge arm summary control unit, obtaining the state of each sub-module and sending the state to the bridge arm summary control unit.
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