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1.发明授权Application of phasor measurement units (PMU) for controlled system separation 有权相控测量单元（PMU）在受控系统分离中的应用公开(公告)号：US08606422B2
公开(公告)日：2013-12-10
申请号：US12948188
申请日：2010-11-17
申请人： Kai Sun , Kyeon Hur , Pei Zhange
发明人： Kai Sun , Kyeon Hur , Pei Zhange
IPC分类号： G05B15/02
CPC分类号： H02J3/24 , H02J3/14 , H02J13/0006 , H02J2003/007 , H02J2003/388 , Y02B70/3225 , Y02E60/728 , Y02E60/74 , Y02E60/76 , Y04S10/265 , Y04S10/30 , Y04S20/222 , Y04S40/22
摘要： This invention relates to a PMU-based controlled system separation method to protect against a catastrophic blackout. The method includes the steps of performing an offline analysis of an electrical transmission network to partition generators into a number of coherent groups, performing online monitoring of the transmission network to determine a separation interface and frequencies and damping ratios of dominant inter-area modes, and estimating the risk of system separation to perform real-time control.
摘要翻译： 本发明涉及一种用于防止灾难性停电的基于PMU的受控系统分离方法。 该方法包括以下步骤：执行电传输网络的离线分析以将发电机划分成多个相干组，执行传输网络的在线监测以确定分离接口以及主要区域间模式的频率和阻尼比，以及 估计系统分离的风险进行实时控制。
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2.发明申请APPLICATION OF PHASOR MEASUREMENT UNITS (PMU) FOR CONTROLLED SYSTEM SEPARATION 有权相控测量单元（PMU）在控制系统分离中的应用公开(公告)号：US20120123602A1
公开(公告)日：2012-05-17
申请号：US12948188
申请日：2010-11-17
CPC分类号： H02J3/24 , H02J3/14 , H02J13/0006 , H02J2003/007 , H02J2003/388 , Y02B70/3225 , Y02E60/728 , Y02E60/74 , Y02E60/76 , Y04S10/265 , Y04S10/30 , Y04S20/222 , Y04S40/22
摘要： This invention relates to a PMU-based controlled system separation method to protect against a catastrophic blackout. The method includes the steps of performing an offline analysis of an electrical transmission network to partition generators into a number of coherent groups, performing online monitoring of the transmission network to determine a separation interface and frequencies and damping ratios of dominant inter-area modes, and estimating the risk of system separation to perform real-time control.
摘要翻译： 本发明涉及一种用于防止灾难性停电的基于PMU的受控系统分离方法。 该方法包括以下步骤：执行电传输网络的离线分析以将发电机划分成多个相干组，执行传输网络的在线监测以确定分离接口以及主要区域间模式的频率和阻尼比，以及 估计系统分离的风险进行实时控制。
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公开(公告)号：US10998813B2
公开(公告)日：2021-05-04
申请号：US16067543
申请日：2016-06-23
发明人： Hee Jin Kim , Dong Su Lee , Kyeon Hur , Jae Sik Kang , Sang Min Kim , Jong Seo Na
摘要： A modular multilevel converter (MMC) includes multiple converter arms, each converter arm having: N submodules connected to each other in series, N being an integer equal to or greater than 2; and a circuit opening unit connected to the N submodules in series to open a circuit of the converter arm, wherein the N submodules has n submodules including full-bridge circuits and N−n submodules including half-bridge circuits, n being less than N.
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公开(公告)号：US10673319B2
公开(公告)日：2020-06-02
申请号：US16473717
申请日：2017-12-05
发明人： Hee Jin Kim , Kyeon Hur , Dong Su Lee , Jae Sik Kang , Ju Yong Jung , Sang Min Kim , Jong Seo Na
摘要： The present invention relates to an MMC converter system which can quickly cut off fault current by installing a plurality of disconnecting switch units on a line connected between two MMC converter devices. The MMC converter system comprises: a first MMC converter device including a plurality of serially connected sub modules; a second MMC converter device including a plurality of serially connected sub modules; a first disconnecting switch unit installed on a line between the first and second MMC converter devices; and a second disconnecting switch unit connected in series to the first disconnecting switch unit on the line, wherein each of the first and second disconnecting switch units comprises a mechanical switch installed on the line so as to open and close the line and a diode connected in parallel to the mechanical switch, and the two diodes are installed in opposite directions to each other.
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5.发明授权Apparatus and method of suppressing low speed ripple current of a single-phase inverter 有权抑制单相逆变器低速纹波电流的装置和方法公开(公告)号：US06690587B2
公开(公告)日：2004-02-10
申请号：US10156179
申请日：2002-05-29
申请人： Kyeon Hur , Sang-Hoon Lee , Min-Hyun Park
发明人： Kyeon Hur , Sang-Hoon Lee , Min-Hyun Park
IPC分类号： H02M112
CPC分类号： H02M5/458 , H02M7/53871 , H02M2001/0022
摘要： An apparatus and method to suppress a low speed ripple current to a motor include a power supply unit to supply single-phase alternating current (AC) power. A rectifying and smoothing unit rectifies and smoothes the single-phase AC power and outputs a direct current (DC) voltage indicative thereof. An inverter receives and converts the DC voltage to a motor driving current to drive the motor. A controller compares an envelope detected from a ripple current in the motor driving current and a DC component extracted from the ripple current and generates a compared result therefrom, and controls an output voltage from the inverter according to the compared result.
摘要翻译： 抑制对电动机的低速纹波电流的装置和方法包括：供给单相交流（AC）电力的电源单元。 整流和平滑单元整流和平滑单相交流电源并输出指示其的直流（DC）电压。 逆变器接收并转换直流电压到电机驱动电流以驱动电动机。 控制器比较从电动机驱动电流中的纹波电流检测到的包络和从纹波电流提取的直流成分，并生成比较结果，并根据比较结果控制来自逆变器的输出电压。
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