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    • 1. 发明公开
    • POWER SUPPLY APPARATUS FOR SUB-MODULE OF MMC
    • 用于MMC的子模块的电源设备
    • EP3242388A1
    • 2017-11-08
    • EP15875665.0
    • 2015-12-29
    • Hyosung Corporation
    • BAEK, Yo Han
    • H02M7/19H02J1/00
    • H02M1/08H02M7/19H02M7/49H02M7/539H02M2001/0048H02M2007/4835
    • The present invention relates to a power supply apparatus for sub-modules of a Modular Multilevel Converter (MMC), which stably supplies power to the sub-modules of the MMC in connection with an HVDC system.
      The power supply apparatus for sub-modules of an MMC according to the present invention includes a charging unit in which an input voltage between P and N busses of the MMC is stored, a relay unit connected in parallel with the charging unit, a resistor connected in series with the relay unit, a TVS diode connected in series with the resistor, a Zener diode connected in series with the TVS diode, a transformer for delivering the input voltage (in a primary winding) to a secondary winding thereof, a switch for switching the flow of current supplied to the transformer, a controller for enabling current to flow to the transformer by turning on the switch upon receiving a clamping voltage of the Zener diode, and a relay operation unit for operating the relay unit when the voltage output from the secondary winding of the transformer is input.
    • 本发明涉及一种用于模块化多电平变换器(MMC)的子模块的电源装置,其为与HVDC系统相关的MMC的子模块稳定供电。 根据本发明的用于MMC的子模块的电源装置包括:充电单元,其中存储MMC的P和N总线之间的输入电压;与充电单元并联连接的继电器单元;连接的电阻器 与该继电器单元串联连接的TVS二极管,与该电阻器串联连接的TVS二极管,与TVS二极管串联连接的齐纳二极管,用于将输入电压(在初级绕组中)输送到次级绕组的变压器, 切换提供给变压器的电流;控制器,用于在接收到齐纳二极管的钳位电压时通过接通开关使得电流流向变压器;以及继电器操作单元,用于当从 变压器的次级绕组被输入。
    • 2. 发明公开
    • MODULAR MULTILEVEL CONVERTER
    • 模块化多级转换器
    • EP3242386A1
    • 2017-11-08
    • EP15875644.5
    • 2015-12-28
    • Hyosung Corporation
    • JUNG, Hong JuCHOI, Jong YunKIM, June SungPARK, Jung SooLEE, Doo Young
    • H02M7/19H02J1/00
    • The present invention provides a Modular Multilevel Converter (MMC) in which M redundant sub-modules are additionally arranged in addition to the N sub-modules that are needed for operation, and the N+M sub-modules are controlled so as to participate in switching in turn.
      The MMC according to an embodiment of the present invention includes multiple sub-modules connected in series with each other and a controller for controlling on/off switching of the sub-modules. Here, the multiple sub-modules include N sub-modules that participate in the operation of the MMC and M redundant sub-modules for replacing a failing sub-module when at least one of the N sub-modules fails, and the controller switches on the sub-module if the carrier signal assigned thereto is higher than a preset reference signal, and switches off the sub-module if the carrier signal assigned thereto is lower than the reference signal.
    • 本发明提供了一种模块化多电平变换器(MMC),其中除了操作所需的N个子模块之外还附加地布置M个冗余子模块,并且控制N + M个子模块以参与 依次切换。 根据本发明实施例的MMC包括彼此串联连接的多个子模块和用于控制子模块的开/关切换的控制器。 这里,多个子模块包括参与MMC操作的N个子模块和M个冗余子模块,用于当N个子模块中的至少一个失效时替换故障子模块,并且控制器接通 如果分配给它的载波信号高于预设的参考信号,则子模块关闭子模块,并且如果分配给它的载波信号低于参考信号则关闭子模块。
    • 3. 发明公开
    • METHOD FOR OPERATING DUAL CONTROLLER
    • 操作双控制器的方法
    • EP3242172A1
    • 2017-11-08
    • EP15875682.5
    • 2015-12-29
    • Hyosung Corporation
    • KANG, Hyo JinNO, Jae Keun
    • G05B19/02H02J1/00
    • G05B19/0428G05B19/058G05B23/0237G05B23/024G05B23/0251G05B2219/14014G05B2219/24182G05B2219/24183G05B2219/24187G05B2219/34427G05D1/0077G06F11/2028H02J1/00
    • The present invention provides a method for operating dual controller which monitors the state of a dual controller to determine whether the dual controller is faulty and enables operation thereof with a controller in a normal state. An operation method of a dual controller according to the present invention dq-converts control command output values of first and second controllers to calculate rates of change in dq conversion values and dq-converts feedback input values, fed back to the first and second controllers, to calculate average rates of change in dq conversion values. When the average rates of change in the dq conversion values for the control command output values and the average rates of change in the dq conversion values for the feedback input values for the respective first and second controllers are identical, the corresponding controller is determined to be in a normal state, and to be in a faulty state otherwise. According to the results of the determination, the controller in the faulty state is set to a standby state and the controller in the normal state is set to an active state.
    • 本发明提供了一种用于操作双控制器的方法,该双控制器监视双控制器的状态以确定双控制器是否有故障并且使其能够与处于正常状态的控制器一起操作。 根据本发明的双控制器的操作方法对第一和第二控制器的控制命令输出值进行dq转换,以计算dq转换值的变化率,并dq转换反馈到第一和第二控制器的反馈输入值, 计算dq转换值的平均变化率。 当相应的第一和第二控制器的控制命令输出值的dq转换值的平均变化率和反馈输入值的dq转换值的平均变化率相同时,相应的控制器被确定为 处于正常状态,否则处于故障状态。 根据判断结果,处于故障状态的控制器被设置为待机状态,并且处于正常状态的控制器被设置为激活状态。
    • 5. 发明公开
    • HIGH-VOLTAGE DC CIRCUIT BREAKER
    • 高压直流断路器
    • EP3091627A1
    • 2016-11-09
    • EP14877510.9
    • 2014-12-24
    • Hyosung Corporation
    • PARK, Jung SooHAN, Se HeeHWANG, Hui Dong
    • H02H3/087
    • H01H9/30H01H9/542H01H9/547H01H33/596H01H2009/543H01H2009/544H02H3/087
    • The present invention relates to a high-voltage direct current (DC) circuit breaker which interrupts a fault current flowing in a power transmission or power distribution DC line when a fault occurs in the DC line. The high-voltage DC circuit breaker according to the present invention comprises: a main switch, installed in the DC line, for interrupting a current in the DC line by being opened when a fault occurs in one side or the other side of the DC line; a nonlinear resistor, connected in parallel to the main switch, for consuming overvoltage; an LC circuit connected in parallel to the main switch and comprising a capacitor and an inductor that are connected to each other in series to generate LC resonance; a first switching element, connected in parallel to the LC circuit, for switching in such a manner that the polarity of a positive voltage (+VC) or a negative voltage (-VC) charged at the capacitor by the resonance of the LC circuit can be changed and charged; and a second switching element, connected between the LC circuit and the DC line so as to be connected in series to the LC circuit, for switching in such a manner that the current pulse, generated by -VC voltage or +VC voltage charged at the capacitor, can be supplied to the main switch.
    • 本发明涉及一种高压直流(DC)断路器,其在直流线路中发生故障时中断流过输电或配电直流线路的故障电流。 根据本发明的高压直流断路器包括:安装在直流线路中的主开关,用于当直流线路的一侧或另一侧发生故障时断开直流线路中的电流 ; 一个与主开关并联的非线性电阻,用于消耗过电压; LC电路,与所述主开关并联连接,并且包括彼此串联连接以产生LC谐振的电容器和电感器; 与LC电路并联连接的第一开关元件,用于以如下方式进行切换:通过LC电路的谐振在电容器处充电的正电压(+ VC)或负电压(-VC)的极性可以 被改变和收费; 以及第二开关元件,其连接在LC电路和DC线之间以便与LC电路串联连接,用于以这样的方式进行切换,使得由-VC电压或+ VC电压产生的电流脉冲在 电容器,可以提供给主开关。
    • 6. 发明公开
    • MODULAR APPARATUS FOR HIGH-VOLTAGE DIRECT-CURRENT TRANSMISSION SYSTEM
    • MODULARE VORRICHTUNGFÜRHOCHSPANNUNGSGLEICHSTROMÜBERTRAGUNGSSYSTEM
    • EP3089304A1
    • 2016-11-02
    • EP14873878.4
    • 2014-12-24
    • Hyosung Corporation
    • KIM, June SUNGJUNG, Hong Ju
    • H02J1/00G01R31/40
    • The present invention relates to a modular apparatus for a high-voltage direct-current transmission system. A sub-module (10), which is a modular apparatus, comprises according to the present invention a power unit (12) in the front and a capacitor unit (13) in the rear, and on the lower end of a front surface (14') of a power unit housing (14) forming the exterior of the power unit (12) is a sloped surface (15). The sloped surface (15) has a hexahederal shape created by removing the edge formed by the front surface (14') and the bottom surface of the power unit housing (14) and faces the ground at an angle. A display unit (16) is provided on the sloped surface (15) so that the status of the sub-module (10) can be easily checked by a worker from the ground on which a structure stands. A front panel (18) comprising the display unit (16) is provided on the sloped surface (15), wherein the front panel (18) is provided with a panel through-hole (18') to allow a configuration space (20) in the interior to be visible. A control board (22) is coupled to the front panel (18) by means of a connection block (23). The control board (22) is movably supported on either end thereof by support rails (26) provided on both inner side walls of the configuration space (20) so as to allow easy entry into the interior and exit to the outside of the power unit (12).
    • 本发明涉及一种用于高压直流传输系统的模块化装置。 作为模块化装置的子模块(10)包括根据本发明的前部的动力单元(12)和位于后部的电容器单元(13),并且在前表面的下端 形成动力单元(12)的外部的动力单元壳体(14)的一个倾斜表面(15)是倾斜表面(15)。 倾斜表面(15)具有通过去除由前表面(14')形成的边缘和动力单元壳体(14)的底表面并以一定角度面对地面而形成的六边形形状。 显示单元(16)设置在倾斜表面(15)上,使得子模块(10)的状态能够容易地由工作人员从结构所在的地面检查。 包括显示单元(16)的前面板(18)设置在倾斜表面(15)上,其中前面板(18)设置有面板通孔(18'),以允许配置空间(20) 在内部可见。 控制板(22)通过连接块(23)联接到前面板(18)。 控制板(22)通过设置在配置空间(20)的两个内侧壁上的支撑轨道(26)可动地支撑在其任一端,以便容易地进入内部并且离开到动力单元的外部 (12)。
    • 7. 发明公开
    • CONVERTER
    • EP2940852A1
    • 2015-11-04
    • EP13867398.3
    • 2013-12-27
    • Hyosung Corporation
    • JUNG, Hong JuKIM, Tae GyunYANG, Hang JunCHOI, Jong Yun
    • H02M7/483
    • H02M1/32H02M1/00H02M7/483H02M7/5387H02M2001/007H02M2007/4835
    • The present invention relates to a converter in which a plurality of sub-modules, each including an energy storage unit and power semiconductors, is connected in series to each other, wherein each of the sub-modules is configured by adding a simple and inexpensive auxiliary circuit unit between two half-bridge units, and thus fault current is allowed to flow into the energy storage unit of each half-bridge unit, thereby blocking or reducing the fault current.
      The present invention provides a converter including a plurality of sub-modules connected in series to each other, wherein each of the sub-modules includes a first half-bridge unit including a first energy storage unit, and a plurality of first power semiconductors connected in parallel to the first energy storage unit and connected in series to each other; a second half-bridge unit including a second energy storage unit, and a plurality of second power semiconductors connected in parallel to the second energy storage unit and connected in series to each other; and an auxiliary circuit unit connecting the first half-bridge unit and the second half-bridge unit; wherein the auxiliary circuit unit includes a single third power semiconductor and a single diode.
    • 本发明涉及一种转换器,其中每个包括能量存储单元和功率半导体的多个子模块彼此串联连接,其中每个子模块通过增加简单且便宜的辅助装置 从而允许故障电流流入每个半桥单元的能量存储单元,由此阻断或减少故障电流。 本发明提供了一种转换器,其包括彼此串联连接的多个子模块,其中,每个子模块包括:第一半桥单元,其包括第一能量存储单元;以及多个第一功率半导体,其被连接到 平行于第一能量存储单元并且彼此串联连接; 第二半桥单元,所述第二半桥单元包括第二储能单元以及与所述第二储能单元并联连接并彼此串联连接的多个第二功率半导体; 以及连接第一半桥单元和第二半桥单元的辅助电路单元; 其中所述辅助电路单元包括单个第三功率半导体和单个二极管。