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    • 1. 发明授权
    • Wireless communication based safer street lamp control system
    • 无线通信更安全的路灯控制系统
    • US07791492B2
    • 2010-09-07
    • US11896113
    • 2007-08-29
    • Kee-Young NamJae-Duck LeeSeong-Hwan Jeong
    • Kee-Young NamJae-Duck LeeSeong-Hwan Jeong
    • G08B21/00H05B37/00H05B39/00H05B41/00
    • H05B37/0272H05B37/038
    • Disclosed is a street lamp control system, which cuts off power sources only around an abnormal street lamp where an electric leakage or dangerous situation occurs and allows the rest street lamps to be kept being turned on. The street lamp control system is positioned in a region divided by a plurality of areas where a predetermined number of street lamps are installed. A distribution panel is installed in each center of the areas, and includes two power source control switching circuits for controlling right and left power sources of the corresponding areas. The power source control switching circuit of the corresponding distribution panel turns off the right and left street lamps including the corresponding street lamp when an abnormal state is sensed on a specific street lamp of a specific area, and a power is supplied to the right and left street lamps to be turned on excluding the abnormal street lamp.
    • 公开了一种路灯控制系统,其仅在出现漏电或危险情况的异常路灯周围切断电源,并允许其余路灯被保持打开。 路灯控制系统位于被安装有预定数量的路灯的多个区域分割的区域中。 配电盘安装在各个区域的中心,并包括两个电源控制开关电路,用于控制相应区域的左右电源。 当在特定区域的特定路灯上感测到异常状态时,相应配电盘的电源控制切换电路关闭包括相应路灯在内的左右路灯,并且向右侧和向左侧供电 路灯要打开,不包括异常路灯。
    • 2. 发明授权
    • Controller of doubly-fed induction generator
    • 双馈感应发电机控制器
    • US07638983B2
    • 2009-12-29
    • US11987540
    • 2007-11-30
    • Jung-Woo ParkKi-Wook LeeDong-Wook Kim
    • Jung-Woo ParkKi-Wook LeeDong-Wook Kim
    • H02H7/06H02P9/00H02P9/04F03D9/00H02M7/48
    • H02P9/007H02M5/4585H02M7/49H02M2007/4835H02P2207/073
    • Disclosed is a controller of a grid coupled type doubly-fed induction generator having a multi-level converter topology, which can control the doubly-fed induction generator having a high voltage specification and can perform a fault ride-through function, an anti-islanding function and a grid voltage synchronization function required for a dispersed power generation facility. The controller makes a H-bridge multi-level converter generate a three-phase voltage waveform resulted from the structure that single-phase converters each being composed of a 2-leg IGBT are stacked in a serial manner, and controls a rotor current so as to make the rotor coil of the doubly-fed induction generator in charge of a slip power only. The boost converter is composed of a 3-leg IGBT and a boost inductor generating a direct current voltage of its source required for the H-bridge multi-level converter.
    • 公开了具有多电平转换器拓扑的电网耦合型双馈感应发电机的控制器,其可以控制具有高电压规格的双馈感应发电机,并且可以执行故障穿越功能,防孤岛 功能和分散式发电设备所需的电网电压同步功能。 控制器使得H桥多电平转换器产生由串联方式堆叠的由双腿IGBT组成的单相转换器的结构所产生的三相电压波形,并且控制转子电流,以便 以使双馈感应发电机的转子线圈仅承担滑动功率。 升压转换器由3脚IGBT和升压电感组成,产生H桥多电平转换器所需的直流电源电压。
    • 3. 发明授权
    • X-ray tube system with disassembled carbon nanotube substrate for generating micro focusing level electron-beam
    • 用于产生微聚焦电子束的分解碳纳米管衬底的X射线管系统
    • US07403595B2
    • 2008-07-22
    • US11783046
    • 2007-04-05
    • Jong Uk KimHae Young Choi
    • Jong Uk KimHae Young Choi
    • H01J35/00H01J35/06H01J35/14
    • H01J35/065H01J35/14H01J2235/062
    • Disclosed is an X-ray tube system with a disassembled carbon nanotube substrate for generating micro focusing level electron beams. A housing provides a vacuum space. An anode forms an electric field by a voltage applied from the outside and accelerates the electrons emitted from the cathode to reach the anode itself. A carbon nanotube substrate used as a cathode corresponding to the anode. A cathode plate supports and fixes the carbon nanotube substrate and applies a voltage to the carbon nanotube substrate. A sample probe is installed assemblably/disassemblably in the housing. A grid electrode is installed in front of the carbon nanotube substrate and extracting electrons from the carbon nanotube substrate in an easy manner. An electron focusing lens focuses the electrons passed through the grid electrode to form a micro level focus in the anode. A feed through applies a voltage to the cathode, the grid electrode and the electron focusing lens. A vacuum pump sustains a vacuum state inside the housing in exchanging the carbon nanotube substrate. A vacuum valve isolates the inside from the outside of the housing when the sample probe is inserted into the housing and disassembled from the housing.
    • 公开了一种具有用于产生微聚焦电子束的分解碳纳米管基底的X射线管系统。 外壳提供真空空间。 阳极通过从外部施加的电压形成电场,并加速从阴极发射的电子到达阳极本身。 用作对应于阳极的阴极的碳纳米管衬底。 阴极板支撑并固定碳纳米管衬底并向碳纳米管衬底施加电压。 样品探针可以安装/拆卸地安装在外壳中。 栅格电极安装在碳纳米管衬底的前面,并以容易的方式从碳纳米管衬底提取电子。 电子聚焦透镜将通过栅格电极的电子聚焦以在阳极中形成微观焦点。 馈电通过对阴极,栅极和电子聚焦透镜施加电压。 在更换碳纳米管基板的过程中,真空泵维持壳体内的真空状态。 当样品探头插入外壳并从外壳拆卸时,真空阀将内部与外壳隔离。