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公开(公告)号：KR100977462B1
公开(公告)日：2010-08-23
申请号：KR1020080091834
申请日：2008-09-18
Applicant: 한국전기연구원
IPC: B60L13/06
Abstract: 본 발명은 자기부상 시스템의 부상 제어를 위한 수직방향속도 및 공극의 결정 방법에 관한 것으로서, 레일 이음매에서 수직방향속도의 불연속 값이 발생하는 문제를 해결하기 위해, 두 개의 공극센서 값이 각각의 미분필터를 거치도록 하고, 각 미분필터에서 생성된 각각의 수직방향속도를 입력으로 하여 속도 및 공극 선택기가 미리 정의된 선택 알고리즘에 따라 수직방향속도를 선택하도록 하며, 선택 알고리즘에 따라 수직방향속도가 전환되는 시점에서 공극센서 값도 동시에 전환시키는 것에 주된 특징이 있는 것이다. 이러한 본 발명에 따르면, 수직방향속도에서 큰 진폭의 불연속점이 발생하는 문제점이 해소되고, 공극센서의 전환시점도 종래에 비해 빨라져서 제어기가 안정화되는데 좀더 시간을 확보할 수 있게 된다. 특히, 레일 이음매를 통과할 때 제어 전압 산출에 사용되는 수직방향속도 및 공극신호의 상하 진폭이 종래의 방법에 비해 월등하게 줄기 때문에 부상 제어의 안정성을 확보할 수 있다.
자기부상, 레일, 공극센서, 공극, 수직방향속도, 부상제어, 미분필터-
公开(公告)号：KR1020100060592A
公开(公告)日：2010-06-07
申请号：KR1020080119242
申请日：2008-11-28
Applicant: 한국전기연구원
IPC: B60L13/06
Abstract: PURPOSE: A levitation control method of a magnetic levitation vehicle is provided to improve safety of levitation control with regard to the variation of an electromagnet property by constantly controlling a magnetic flux between the electromagnet and a rail. CONSTITUTION: Magnetic flux measurement data is obtained by repeatedly measuring magnetic flux between an electromagnet and a rail while changing a gap between the electromagnet and the rail. A magnetic flux function is produced using the magnetic flux measurement data. Magnetic flux function validity is identified to determine whether a magnetic flux function is constant. A final control voltage(506) is determined by adding a magnetic control voltage(505-2) to a supply control voltage(505-1).
Abstract translation: 目的：提供磁悬浮车辆的悬浮控制方法，通过不断控制电磁铁和轨道之间的磁通量，提高电磁铁特性变化对悬浮控制的安全性。 构成：通过在改变电磁铁和轨道之间的间隙的同时重复测量电磁铁和轨道之间的磁通量来获得磁通量测量数据。 使用磁通测量数据产生磁通量函数。 识别磁通量函数有效性以确定磁通函数是否恒定。 通过将磁控制电压（505-2）与电源控制电压（505-1）相加来确定最终控制电压（506）。
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公开(公告)号：KR1020090012544A
公开(公告)日：2009-02-04
申请号：KR1020070076459
申请日：2007-07-30
Applicant: 한국전기연구원
Abstract: A dual fault-tolerant chopper circuit for driving magnetic levitation electromagnet is provided to improve reliability of a magnetic levitation system by steadily maintaining levitation state of a magnetic levitated train in malfunction of a discrete chopper. In a first chopper(500), a pair of first power switching elements(S1,S2) control current supplied to an inductor load(700) according to an input PWM(Pulse Width Modulation) signal. A pair of first resistance units(R1,R2) sense malfunction of a pair of the first power switching elements. A pair of first contactless electronic switches(SSR1,SSR2) are turned on/off according to the malfunction of a pair of the first power switching elements. In a second chopper(600), a pair of second power switching elements(S3,S4) complementarily operate with a pair of the first power switching element of the first chopper according to the input PWM signal. A pair of second resistance units(R3,R4) sense the malfunction of a pair of the second power switching elements. A pair of second contactless electronic switches(SSR3,SSR4) are turned on/off according to the malfunction of a pair of the second power switching elements.
Abstract translation: 提供一种用于驱动磁悬浮电磁铁的双容错斩波电路，通过在离散斩波器故障中稳定地保持磁悬浮列车的悬浮状态，提高磁悬浮系统的可靠性。 在第一斩波器（500）中，根据输入PWM（脉宽调制）信号，一对第一功率开关元件（S1，S2）控制提供给电感器负载（700）的电流。 一对第一电阻单元（R1，R2）检测一对第一电力开关元件的故障。 一对第一非接触电子开关（SSR1，SSR2）根据一对第一电力开关元件的故障而导通/断开。 在第二斩波器（600）中，根据输入的PWM信号，一对第二功率开关元件（S3，S4）与第一斩波器的一对第一功率开关元件互补地操作。 一对第二电阻单元（R3，R4）感测一对第二电力开关元件的故障。 一对第二非接触式电子开关（SSR3，SSR4）根据一对第二电力开关元件的故障而被接通/断开。
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公开(公告)号：KR101456094B1
公开(公告)日：2014-10-31
申请号：KR1020130147308
申请日：2013-11-29
Applicant: 한국전기연구원
IPC: H02P9/10
Abstract: The present invention controls organic reactive power of a power generation system and controls a DC stage voltage of a power converter by classifying voltage and current of an induction generator stator and an induction generator rotor having nonlinear characteristics respectively. The present invention can be stably mounted by designing a controller by integrating a stator and rotor side converter, and can be included in a nonlinear control input to remove all of differential terms which can cause instability of the system. Even if a time-variable disturbance factor occurs by uncertainties of a wound-rotor induction generator model or external noise or the model has unknown parameters, an apparatus for controlling the wound-rotor type induction generator using a backstepping robust adaptive control scheme can maintain a stable control operation.
Abstract translation: 本发明控制发电系统的有机无功功率，分别对具有非线性特性的感应发电机定子和感应发电机转子的电压和电流进行分类，来控制功率转换器的直流电压。 通过集成定子和转子侧转换器来设计控制器，可以稳定地安装本发明，并且可以包括在非线性控制输入中以去除可能导致系统不稳定的所有差分项。 即使由于绕线转子感应发电机模型或外部噪声的不确定性而引起时变扰动因素，或者模型具有未知参数，则使用后退鲁棒自适应控制方案来控制绕线转子型感应发电机的装置可以维持 稳定控制操作。
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Patent Agency Ranking
公开(公告)号：KR101444732B1
公开(公告)日：2014-09-30
申请号：KR1020130045362
申请日：2013-04-24
Applicant: 한국전기연구원
Abstract: The present invention relates to a control apparatus for reducing direct current link ripples when three-phase imbalance occurs at a grid-connected converter and a control method thereof, wherein the grid-connected converter comprises a power component extracting device for extracting an alternating current and a direct current component from a three phase alternating current power source; a reference voltage generating device for receiving the alternating current and the direct current component from the power component extracting device and generating alternating current and a direct current reference voltage; a space vector pulse modulation part for receiving the alternating current and the direct current reference voltage from the reference voltage generating device and adjusting voltage to be applied to a gate of an insulated gate bipolar transistor bridge; and the insulated gate bipolar transistor bridge for receiving gate voltage from a space vector pulse modulation control part and transforming the three phase alternating power source into direct current voltage. The present invention controls a ripple of direct current (DC) link voltage to be minimized even if three phase grid voltage is unbalanced, thereby controlling current, flowing in the insulated gate bipolar transistor (IGBT) bridge, under a set level.
Abstract translation: 本发明涉及一种用于在并网转换器发生三相不平衡时减少直流链路波纹的控制装置及其控制方法，其中并网转换器包括用于提取交流电的功率分量提取装置， 来自三相交流电源的直流分量; 参考电压产生装置，用于从功率部件提取装置接收交流电流和直流分量，并产生交流电流和直流参考电压; 空间矢量脉冲调制部分，用于从参考电压产生装置接收交流电流和直流参考电压，并调整施加到绝缘栅双极晶体管桥的栅极的电压; 以及用于从空间矢量脉冲调制控制部分接收栅极电压并将三相交流电源变换为直流电压的绝缘栅双极晶体管桥。 本发明控制直流（DC）链路电压的纹波即使三相电网电压不平衡也能最小化，从而控制在绝缘栅双极晶体管（IGBT）桥中流动的电流在设定电平。
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公开(公告)号：KR101413565B1
公开(公告)日：2014-07-04
申请号：KR1020120139009
申请日：2012-12-03
Applicant: 한국전기연구원
CPC classification number: Y02E10/723
Abstract: 본 발명은 풍력터빈 실시간 모의장치를 고안하는데 있어서 검증된 풍력터빈 모델링 소프트웨어 툴을 사용하여 풍력터빈 동역학 모델식을 세우되, 풍력터빈의 회전기 회전 속도뿐만 아니라 풍력터빈 회전기의 회전날개들에 가해지는 기계적 피로 하중 정도를 판단할 수 있는 회전날개의 루트(root) 부분의 회전기 회전 평면 외(out of plane) 굽힘 모멘트(bending moment)를 계산하여 그 값을 피치제어기에 전달하여, 풍력터빈의 기계적 피로 하중을 줄일 수 있도록 성능 시험이 가능한, 풍력터빈 피치제어기의 성능 평가장치 및 그 방법에 관한 것이다.
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公开(公告)号：KR101214442B1
公开(公告)日：2012-12-21
申请号：KR1020110013210
申请日：2011-02-15
Applicant: 한국전기연구원
Abstract: 본발명은전자식능동부하장치에관한것으로서, 더욱상세하게는풍력, 태양광, 연료전지등 신재생에너지의전력계통연계운전및 이를이용한마이크로그리드시스템의구축에있어이들의전기적인출력특성을다양하게모의할수 있는전자식능동부하장치에관한것으로서, 실제부하혹은발전특성을실시간으로모의할수 있는것을특징으로한다. 이를위해본 발명은, 피시험기기또는마이크로그리드시스템의출력측에연결되는 AC/DC 컨버터와, 전력계통측에연결되는 DC/AC 인버터와, 상기 AC/DC 컨버터및 DC/AC 인버터를연결하는직류단캐패시터로이루어지는전력변환장치; 상기 AC/DC 컨버터의스위칭동작을제어하는컨버터제어기; 상기 DC/AC 인버터의스위칭동작을제어하는인버터제어기; 및상기컨버터제어기및 인버터제어기의제어신호생성을위한명령을제공하는운전제어부; 를포함하며, 상기운전제어부는시간에따라변화하는부하를모의하기위한유효전력및 무효전력의크기와파형기준치를포함하는파형데이터를생성하여이를상기컨버터제어기에전송하는파형데이터생성부를구비하는것을특징으로하는전자식능동부하장치를제공한다.
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公开(公告)号：KR1020120093565A
公开(公告)日：2012-08-23
申请号：KR1020110013210
申请日：2011-02-15
Applicant: 한국전기연구원
Abstract: PURPOSE: An electronic active load device is provided to minimize construction costs and simulation costs by using simulated load instead of real load. CONSTITUTION: A power conversion device comprised of an AC/DC converter(113), a DC/AC inverter(115), and a DC terminal capacitor(114). The DC terminal capacitor interlinks the AC/DC converter and the DC/AC inverter. Controllers(121, 122) control the AC/DC converter and the DC/AC inverter. An operation controller(130) creates waveform and load. An electronic active load device(100) receives an output of a device under test(20) or a micro grid system. The electronic active load device transfers the output to a power system.
Abstract translation: 目的：提供电子有源负载装置，通过使用模拟负载而不是实际负载来最小化建筑成本和模拟成本。 构成：由AC / DC转换器（113），DC / AC逆变器（115）和DC端子电容器（114）构成的电力变换装置。 直流端子电容器将AC / DC转换器和DC / AC逆变器相互连接。 控制器（121,122）控制AC / DC转换器和DC / AC逆变器。 操作控制器（130）产生波形和负载。 电子有源负载装置（100）接收被测器件（20）或微电网系统的输出。 电子有源负载装置将输出传送到电力系统。
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公开(公告)号：KR1020100134865A
公开(公告)日：2010-12-24
申请号：KR1020090053209
申请日：2009-06-16
Applicant: 한국전기연구원
IPC: B60L13/06
Abstract: PURPOSE: The magnetic levitation system and flotation control method prevent to include the levitation controller applying the in advance calculated control gain and sink the trouble occurrence time instance air gap. CONSTITUTION: A pair of electromagnets is included of the first electromagnet and the second electromagnet. The control gain value is computed when both the flotation controller(50) is the first electromagnet and second electromagnet normality. Current sensors(20a, 20b) are connected between IGBT(Insulated Gate Bipolar Transistor)(70, 75) and electromagnet.
Abstract translation: 目的：磁悬浮系统和浮选控制方法防止包括悬浮控制器应用事先计算的控制增益并吸收故障发生时间实例气隙。 构成：第一电磁体和第二电磁体包括一对电磁体。 当浮选控制器（50）都是第一电磁体和第二电磁体正常时，计算控制增益值。 电流传感器（20a，20b）连接在IGBT（绝缘栅双极晶体管）（70,75）和电磁体之间。
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