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1. 发明公开

EP3232555A1 SUB-MODULE DISTRIBUTED CONTROL METHOD, DEVICE AND SYSTEM 有权
标题翻译：子模块分布式控制方法，装置和系统
公开(公告)号：EP3232555A1
公开(公告)日：2017-10-18
申请号：EP15866788.1
申请日：2015-10-28
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd
发明人： DING, Jiudong , TIAN, Jie , DONG, Yunlong , LI, Haiying , CAO, Dongming , LIU, Haibin , LU, Yu
IPC分类号： H02M7/00
摘要： A submodule distributed control method, device and system are provided. Submodules of each bridge arm are grouped. Each group corresponds to one valve based controller. An upper-level control device calculates a weight of each group according to a bridge arm current, an average voltage of normal submodules in each group, and the number of the normal submodules in each group; calculates, according to the number of submodules to be input in a corresponding bridge arm, the number of submodules being input in each group and delivers the number to the valve based controller. The valve based controller operates according to a voltage balancing policy and a gating method that are provided in the prior art.
摘要翻译：提供了一种子模块分布式控制方法，装置和系统。每个桥臂的子模块被分组。每个组对应一个阀门控制器。上层控制装置根据桥臂电流，各组正常子模块的平均电压以及各组正常子模块的数量计算各组的权重; 根据要在相应的桥臂中输入的子模块的数量来计算在每个组中输入的子模块的数量，并将该数量传递给基于阀门的控制器。基于阀的控制器根据现有技术中提供的电压平衡策略和门控方法进行操作。

2. 发明公开

EP3965245A1 MULTI-PORT ENERGY ROUTER, AND CONTROL SYSTEM AND CONTROL METHOD THEREOF 审中-公开
公开(公告)号：EP3965245A1
公开(公告)日：2022-03-09
申请号：EP20851730.0
申请日：2020-07-07
申请人： NR ELECTRIC CO., LTD. , NR Engineering Co., Ltd.
发明人： YANG, Chen , ZHANG, Zhongfeng , WANG, Yu , XIE, Yeyuan , TIAN, Jie , LI, Haiying , QI, Qi , GE, Jian , CAO, Dongming
IPC分类号： H02J1/14 , H02J1/10
摘要： Disclosed in the present invention is a multi-port energy router, comprising no less than 2 multi-port modules; each multi-port module comprises a first common port and a second common port and at least one remaining port. The first common port is a direct-current port and is connected to a direct-current bus or is suspended, the second common port is connected to an alternating-current bus or a direct-current bus, and all the remaining ports is able to be customized according to actual usage requirements. Such structure can provide a multi-port power supply solution having distributed characteristics, satisfying applications of various forms of electric energy of different voltage levels, and being able to well solve a voltage balance problem existing in the prior art. Also disclosed in the present invention are a control system and a control method for a multi-port energy router.

3. 发明公开

EP3958454A1 SOLID-STATE TRANSFORMER 无效
公开(公告)号：EP3958454A1
公开(公告)日：2022-02-23
申请号：EP20854635.8
申请日：2020-07-15
申请人： NR ELECTRIC CO., LTD. , NR Engineering Co., Ltd.
发明人： ZHANG, Zhongfeng , XIE, Yeyuan , CAO, Dongming , FANG, Taixun , SHENG, Xiaodong , YANG, Chen , LIAN, Jianyang
IPC分类号： H02M5/458
摘要： A solid-state transformer comprises a plurality of power units (100). Each of the plurality of power units (100) comprises a high-voltage side module (110), a low-voltage side module (120), and an isolation transformer (130). The isolation transformer (130) comprises a high-voltage winding (131), a low-voltage winding (132), and an iron core (133). The high-voltage winding (131) is wound on the iron core (133) and connected to the high-voltage side module (110). The low-voltage winding (132) is wound on the iron core (133) and connected to the low-voltage side module (120). The iron core (133) is in near equipotential connection to the high-voltage side module (110) or the low-voltage side module (120) by means of a conductive medium to fix the floating potential of the iron core (133).

4. 发明授权

EP3051653B1 METHOD AND APPARATUS FOR CONTROLLING DIRECT-CURRENT VOLTAGE 有权转让
公开(公告)号：EP3051653B1
公开(公告)日：2020-11-18
申请号：EP14846869.7
申请日：2014-09-25
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd
发明人： DONG, Yunlong , TIAN, Jie , LI, Haiying , CAO, Dongming
IPC分类号： H02J3/36 , H02J13/00

5. 发明公开

EP3672008A1 SERIES COMPENSATOR, AND CONTROL METHOD 有权
公开(公告)号：EP3672008A1
公开(公告)日：2020-06-24
申请号：EP18891849.4
申请日：2018-09-11
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd.
发明人： PAN, Lei , TIAN, Jie , CAO, Dongming , DONG, Yunlong , ZHOU, Qiwen , HUANG, Ruhai , DING, Fengfeng
IPC分类号： H02H9/02
摘要： The present invention provides a series compensator and a control method. The series compensator includes a series transformer, a series transformer bypass device, a voltage source converter, a high-speed converter bypass device, a high-speed switch, and a reactor. The reactor and the high-speed switch are connected in parallel to form a current limiting module; one winding of the series transformer has two ends connected in series to a line, and the other winding thereof is sequentially connected to the current limiting module and the high-speed converter bypass device; the voltage source converter and the high-speed converter bypass device are connected in parallel; and at least one winding of the series transformer are connected in parallel to at least one series transformer bypass device. The series compensator of the present invention indirectly provides the current limiting module, so as to effectively limit the short-circuit current of a system, reduce the fault current to which the compensator is subjected, and improve the reliability of an alternating current system and the series compensator. Moreover, the current limiting module has a low voltage level, and the high-speed switch has a small breaking current, thereby providing good industrial applicability.

6. 发明公开

EP3051653A1 METHOD AND APPARATUS FOR CONTROLLING DIRECT-CURRENT VOLTAGE 有权转让
标题翻译： VERFAHREN UND VORRICHTUNG ZUR STEUERUNG VON GLEICHSPANNUNG
公开(公告)号：EP3051653A1
公开(公告)日：2016-08-03
申请号：EP14846869.7
申请日：2014-09-25
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd
发明人： DONG, Yunlong , TIAN, Jie , LI, Haiying , CAO, Dongming
IPC分类号： H02J3/36
摘要： The present invention discloses a direct current (DC) voltage control method, including: determining, when it is determined that a DC voltage primary control station loses a DC voltage control function, whether the DC voltage primary control station can communicate with the DC voltage secondary control station, and if yes, sending, by the DC voltage primary control station, information about the DC voltage primary control station losing the DC voltage control function to the at least one DC voltage secondary control station and enabling a DC voltage control function of one DC voltage secondary control station, so as to adjust a DC voltage; before the DC voltage control function of the DC voltage secondary control station is enabled, if the DC voltage exceeds an operation range, enabling, by the at least one DC voltage secondary control station, a DC voltage auxiliary control function, so as to adjust emitted or absorbed active power; and when the DC voltage primary control station cannot communicate with all of or some of the at least one DC voltage secondary control station, and if the DC voltage exceeds the operation range, enabling, by at least one DC voltage secondary control station, a DC voltage auxiliary control function, so as to adjust current emitted or absorbed active power, and determining, according to a policy, one DC voltage secondary control station to enable a DC voltage control function, so as to adjust the DC voltage. The present invention further discloses an apparatus for implementing the method. With the present invention, DC voltage oscillation of a system, which is caused when a DC voltage primary control station stops running, may be reduced:
摘要翻译：本发明公开了一种直流（DC）电压控制方法，包括：当确定直流电压主控制站失去直流电压控制功能时，确定直流电压主控制站是否可以与直流电压次级控制站，如果是，则通过所述直流电压主控站向所述至少一个直流电压次级控制站发送关于直流电压主控制站失去直流电压控制功能的信息，并且实现一个直流电压控制功能直流电压二级控制站，以调整直流电压; 在使用直流电压二次控制站的直流电压控制功能之前，如果直流电压超过工作范围，则由至少一个直流电压次级控制站使能直流电压辅助控制功能，或吸收有功功率; 并且当所述直流电压主控制站不能与所述至少一个直流电压次级控制站的全部或者一部分通信时，并且如果所述直流电压超过所述运行范围，则通过至少一个直流电压次级控制站使能DC 电压辅助控制功能，以调节电流发射或吸收的有功功率，并根据策略确定一个直流电压二级控制站，以实现直流电压控制功能，从而调节直流电压。本发明还公开了一种用于实现该方法的装置。通过本发明，可以减少在直流电压一次控制站停止运行时引起的系统的直流电压振荡，

7. 发明公开

EP3823148A1 UNIDIRECTIONAL DC VOLTAGE CONVERSION DEVICE AND SYSTEM AND METHOD FOR CONTROLLING SAME 审中-实审
公开(公告)号：EP3823148A1
公开(公告)日：2021-05-19
申请号：EP19856842.0
申请日：2019-08-28
申请人： NR ELECTRIC CO., LTD. , NR Engineering Co., Ltd.
发明人： XIE, Yeyuan , TIAN, Jie , ZHANG, Zhongfeng , YANG, Chen , LI, Haiying , CAO, Dongming , WANG, Yu
IPC分类号： H02M3/28 , H02J1/10
摘要： A unidirectional DC voltage conversion device and system and a method for controlling the same. The unidirectional DC voltage conversion device comprises a front end circuit (2), a main power circuit (1), a preceding-stage auxiliary isolation switch (5), and a subsequent-stage auxiliary isolation switch (6). A preceding-stage port of the main power circuit (1) and a subsequent-stage port of the front end circuit (2) form a cascade connection. The preceding-stage auxiliary isolation switch (5) is connected to a negative terminal (8) of a preceding-stage port of the front end circuit (2), and forms, together with a positive terminal (7) of the preceding-stage port of the front end circuit (2), a first input port of the unidirectional DC voltage conversion device. The subsequent-stage auxiliary isolation switch (6) is connected to a negative terminal (10) of a subsequent-stage port of the main power circuit (1), and forms, together with a positive terminal (9) of the subsequent-stage port of the main power circuit (1), a first output port of the unidirectional DC voltage conversion device.

8. 发明公开

EP3796499A1 MULTI-VOLTAGE LEVEL DIRECT CURRENT GRID SYSTEM AND CONTROL PROTECTION METHOD 审中-公开
公开(公告)号：EP3796499A1
公开(公告)日：2021-03-24
申请号：EP19819414.4
申请日：2019-04-01
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd.
发明人： XIE, Yeyuan , LI, Haiying , WANG, Yu , ZHANG, Zhongfeng , CAO, Dongming
IPC分类号： H02H7/26
摘要： A multi-voltage level direct current grid system and a control protection method, the direct current grid system comprising: at least two direct current buses; at least one direct current transformer, one end of which is connected to a first direct current bus while another end is connected to a second direct current bus or a lead-out wire, which may achieve direct current voltage conversion; and at least one lead-out wire current limiter, one end of the lead-out wire current limiter being connected to the second direct current bus while another end is connected to the lead-out wire; the lead-out wire current limiter comprises a first current-limiting unit, and the first current limiting unit comprises a group of direct current switches, as well as a first bypass switch and a first current-limiting resistor unit that are connected in parallel. By means of increasing the input of the current-limiting resistor unit and lowering fault current change rate, the protection of devices in a direct current grid is facilitated; during a fault, the direct current transformer may not be locked up, which facilitates rapid recovery of the system once the fault is eliminated.

9. 发明授权

EP3211741B1 METHOD FOR INHIBITING MULTIPLE CONVERTER STATIONS INTO PASSIVE CONTROL MODE IN ISLAND STATE 有权
公开(公告)号：EP3211741B1
公开(公告)日：2019-04-10
申请号：EP15868517.2
申请日：2015-11-24
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd
发明人： DONG, Yunlong , TIAN, Jie , CAO, Dongming , LI, Haiying , DING, Jiudong , HU, Zhaoqing , LI, Gang , LIU, Haibin , LU, Yu
IPC分类号： H02J3/00 , H02J3/38 , H02J1/10

10. 发明公开

EP3316293A1 THYRISTOR ASSEMBLY RADIATOR FOR DC CONVERTER VALVE 有权
标题翻译：直流转换阀用THYRISTOR组装散热器
公开(公告)号：EP3316293A1
公开(公告)日：2018-05-02
申请号：EP16829756.2
申请日：2016-07-13
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd , NR Electric Power Electronics Co., Ltd.
发明人： ZHANG, Xiang , FANG, Taixun , CAO, Dongming , CHEN, Chihan , ZHANG, Guangtai , LIU, Haibin
IPC分类号： H01L23/473 , H01L23/367 , H03K17/72
CPC分类号： H01L23/473 , H01C1/08 , H01L23/367 , H01L25/117 , H03K17/72
摘要： A thyristor assembly radiator for a DC converter valve. A water discharging port of an N th radiator is communicated with a water discharging port of an (N-2) th radiator. A water feeding port of the N th radiator is communicated with a water feeding port of an (N+2) th radiator. Or, a water feeding port of the N th radiator is communicated with a water feeding port of the (N-2) th radiator, and a water discharging port of the N th radiator is communicated with a water discharging port of the (N+2) th radiator. A water discharging port of an M th radiator is communicated with a water discharging port of an (M-2) th radiator, and a water feeding port of the M th radiator is communicated with a water feeding port of an (M+2) th radiator, or a water feeding port of an M th radiator is communicated with a water feeding port of the (M-2) th radiator, and a water discharging port of the M th radiator is communicated with a water discharging port of an (M+2) th radiator. Water feeding ports of the last two radiators are communicated. According to the radiator, the number of joints of a cooling system is reduced, the risk of leakage is lowered, the operation reliability of a converter valve is improved, the maintenance difficulty is lowered, and the maintenance time is shortened.
摘要翻译：用于直流转换器阀门的晶闸管组件散热器。第N散热器的排水口与第（N-2）散热器的排水口连通。第N散热器的给水口与第（N + 2）散热器的给水口连通。或者，第N个散热器的进水口与第（N-2）个散热器的进水口连通，第N个散热器的出水口与第（N + 2）个散热器的出水口连通， th散热器。第M散热器的出水口与第（M-2）散热器的出水口连通，第M散热器的给水口与第（M + 2）散热器的给水口连通或者第M散热器的给水口与第（M-2）散热器的给水口连通，第M散热器的出水口与（M + 2）散热器的出水口连通， th散热器。最后两个散热器的供水口相互通信。根据散热器，减少了冷却系统的接头数量，降低了泄漏的风险，改善了换流阀的操作可靠性，维修难度降低，维修时间缩短。

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