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公开(公告)号：KR100856715B1
公开(公告)日：2008-09-04
申请号：KR1020060100559
申请日：2006-10-17
Applicant: 한국전기연구원
IPC: H02J3/38
Abstract: 분산발전 시스템이 배전계통의 일정 지역의 부하를 감당할 만큼 충분히 보급된 상태를 전제로 이들을 통합적으로 제어하고 운영하는 새로운 배전망의 형태인 마이크로 그리드에 있어서 마이크로 그리드의 단독 운전 상황을 검출하기 위한 마이크로 그리드용 단독 운전 검출 방법 및 그 장치가 개시되어 있다. 장치는 전력 망에 차단기를 통해 연결되는 마이크로 그리드 및 상기 마이크로 그리드를 전력 망과 연계하여 통합 관리하는 마이크로 그리드 에너지 관리 시스템에 있어서, 상기 차단기를 흐르는 전류 검출하기 위한 전류 검출기; 상기 차단기의 양단 전압을 검출하기 위한 전압 검출기; 상기 전류 및 전압 검출기로부터의 전류 검출 신호 및 전압 검출 신호를 디지털 신호로 변환하기 위한 AD 변환 회로; 상기 마이크로 그리드 에너지 관리 시스템과 통신 가능하게 연결되고, 상기 마이크로 그리드 에너지 관리 시스템으로부터의 단독 운전 검출 개시 신호를 수신하는 경우, 상기 AD 변환 회로로부터의 전압 및 전류 검출 디지털 신호들을 기초로 상기 마이크로 그리드의 단독 운전을 검출하기 위한 신호 처리 프로세서를 포함한다.
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公开(公告)号：KR1020080041310A
公开(公告)日：2008-05-13
申请号：KR1020060109203
申请日：2006-11-07
Applicant: 한국전기연구원
CPC classification number: Y02E10/563 , Y02E10/566
Abstract: A DC/AC converter control system for a grid-connected transformerless type photovoltaic generation system is provided to secure the stability of an operation of an entire system by using an auxiliary control algorithm for maintaining a proper DC link voltage. A first DQ conversion module is connected to a DC/AC converter and generates synchronous voltage vectors(512,513) required for control by using three-phase distribution voltage(511) and phase angle estimation information(521). A phase synchronous module(520) generates the phase angle estimation information by using the synchronous voltage vectors. A second DQ conversion module generates synchronous current vectors(532,533) by applying the phase angle estimation information to a three-phase current of the DC/AC converter. A current control module(550) generates output voltage vectors(561,562) outputted by the DC/AC converter by comparing an output current reference value(554) with present synchronous current vector information and using generated error information. A DQ inversion module calculates a proper switching time of switching elements constituting the DC/AC converter by using the phase angel estimation information and information of the output voltage vectors. A PWM(Pulse Width Modulation) controls the DC/AC converter by supplying an on and off signal to each of the switching elements according to the switching time calculated by the DQ inversion module. A power control module(540) generates the output current reference value based on output electric energy of a photovoltaic cell array, a voltage(546) of a DC link capacitor, and DC link operation range(547) information.
Abstract translation: 提供了一种用于并网无变压器型光伏发电系统的DC / AC转换器控制系统，以通过使用用于维持适当DC链路电压的辅助控制算法来确保整个系统的操作的稳定性。 第一DQ转换模块连接到DC / AC转换器，并且通过使用三相分配电压（511）和相位角估计信息（521）产生用于控制所需的同步电压矢量（512,513）。 相位同步模块（520）通过使用同步电压矢量产生相位角估计信息。 第二DQ转换模块通过将相位角估计信息应用于DC / AC转换器的三相电流来产生同步电流矢量（532,533）。 电流控制模块（550）通过将输出电流参考值（554）与当前同步电流矢量信息进行比较并使用产生的误差信息来生成由DC / AC转换器输出的输出电压矢量（561,562）。 DQ反相模块通过使用相位角估计信息和输出电压矢量的信息来计算构成DC / AC转换器的开关元件的适当切换时间。 PWM（Pulse Width Modulation，脉宽调制）通过根据由DQ反相模块计算出的切换时间向每个开关元件提供通/断信号来控制DC / AC转换器。 功率控制模块（540）基于光伏电池阵列的输出电能，直流链路电容器的电压（546）和直流链路工作范围（547）来生成输出电流参考值。
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公开(公告)号：KR1020060124825A
公开(公告)日：2006-12-06
申请号：KR1020050044362
申请日：2005-05-26
Applicant: 한국전기연구원
IPC: H02J3/38
Abstract: A control module for distributed power and a method thereof are provided to reduce manufacturing cost and time by commonly using a control module of the distributed power using a power converting unit. In a control module for distributed power, a control unit(500) generates a power command by selectively realizing algorithm according to the kind of output voltage of an energy source(100), and outputs a switching signal to a rectifier(202) and an inverter(203) of a power converting unit(200) through PWM output by using voltage and current information of the power converting unit(200) according to the power command. The power converting unit(200) is switched by the switching signal, and converts AC or DC power(201) output from the energy source(100) into AC power of desired voltage and frequency.
Abstract translation: 提供了用于分布式电力的控制模块及其方法，以通过使用功率转换单元共同使用分布式电力的控制模块来降低制造成本和时间。 在用于分布式电力的控制模块中，控制单元（500）通过根据能量源（100）的输出电压的种类选择性地实现算法来产生功率指令，并将切换信号输出到整流器（202）和 根据功率指令通过使用电力转换单元（200）的电压和电流信息通过PWM输出的电力转换单元（200）的逆变器（203）。 电力转换单元（200）通过开关信号切换，将从能量源（100）输出的AC或DC电力（201）变换成所需电压和频率的AC电力。
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公开(公告)号：KR1020050121486A
公开(公告)日：2005-12-27
申请号：KR1020040046630
申请日：2004-06-22
Applicant: 한국전기연구원
IPC: G01D5/36
CPC classification number: G01D5/2497 , G01D5/36 , H02P25/066
Abstract: 본 발명은 물류장치나 반도체 제조설비의 스토커 시스템처럼 선형으로 긴 거리를 이동하는 선형 이송시스템에 사용되는 이송장치의 절대위치를 검출하기 위한 선형엔코더에 관한 것으로, 더욱 상세하게는 이송장치의 절대위치를 찾기 위해 원점으로 이동하는 등의 시간이 걸리는 절차에 의하지 않고 빠르게 절대위치를 검출할 수 있는 선형 엔코더에 관한 것이다.
또한, 선형 전동기를 구동원으로 하는 시스템의 경우 선형 전동기의 속도 및 위치제어를 위해서 전동기의 고정자와 이동자의 상대위치 검출이 필요하게 되는데 상대위치 검출의 정밀도가 떨어질 경우 전체적인 제어 특성의 악화를 초래한다. 이에 따라, 본 발명은 절대위치검출과 함께 상대위치를 검출하며, 그 정밀도도 종전보다 우수한 선형 엔코더에 관한 것이다.-
公开(公告)号：KR1020050029106A
公开(公告)日：2005-03-24
申请号：KR1020040042443
申请日：2004-06-10
Applicant: 한국전기연구원
IPC: H02K41/03
Abstract: An integrated system of a linear motion guide and a reluctance-type linear motor is provided to commonly use stator units of a linear motion guide in a reluctance-type linear motor having stators, and to commonly use rotor iron cores of the motor with rotor units of the guide in a mobile unit, thereby realizing a simple linear transfer system. Reluctance-type linear motor rotors(1) and reluctance-type linear motor rotors(2) are supported by a combination structure of linear motion guide rotors(9) and reluctance-type linear motor rotor supports. Stators(5) of a reluctance-type linear motor are configured by inserting magnetic substances(6) among each stator iron core(7), when a current flows into reluctance-type linear motor rotor coils(3). A linear motion guide consists of linear motor guide supports(8) and the linear motion guide rotors(9), and disposes the reluctance-type linear motor stators(5) on top of the linear motion guide supports(8).
Abstract translation: 提供了一种直线运动导向装置和磁阻型直线电动机的集成系统，以便在具有定子的磁阻型线性电动机中通常使用线性运动导轨的定子单元，并且通常使用具有转子单元的电动机的转子铁心 的移动单元，从而实现简单的线性传输系统。 磁阻型线性电动机转子（1）和磁阻式直线电动机转子（2）由直线运动导向转子（9）和磁阻式线性电动机转子支架的组合结构支撑。 当电流流入磁阻型线性电动机转子线圈（3）时，通过在每个定子铁芯（7）中插入磁性物质（6）来构成磁阻型线性电动机的定子（5）。 线性运动引导件由线性电动机引导支架（8）和直线运动导向转子（9）组成，并将磁阻型直线电动机定子（5）配置在直线运动导向支架（8）的顶部。
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Patent Agency Ranking
公开(公告)号：KR100412301B1
公开(公告)日：2003-12-31
申请号：KR1020020013521
申请日：2002-03-13
Applicant: 한국전기연구원
IPC: H04Q1/18
Abstract: PURPOSE: A duplex control method in a hierarchical control system and an apparatus therefor are provided to drive a large scale power converting apparatus at a rated capacity without reducing the capacity of the large scale power converting apparatus although failure is generated in a random controller of a lower layer under the hierarchical control system of the large scale power converting apparatus. CONSTITUTION: A plurality of optical receiving circuit units(301,302) receive HB(Heart Beat) signals and firing pulse signals from unit controllers(101,102), respectively. An EPLD(Erasable Programmable Logic Device)(303) receives the HB signals and the firing pulse signals, which are received through the optical receiving circuit units(301,302), and judges whether the unit controller(101,102) are normal by the period measurement of the HB signals. If the unit controller(101,102) are normal, the EPLD(303) transmits the firing pulse signals inputted from the unit controllers(101,102), to corresponding unit controllers(101,102) again. If the random unit controller fails, the EPLD simultaneously transmits the firing pulse signal inputted from the normal unit controller, to the abnormal unit controller and the normal unit controller.
Abstract translation: 目的：提供一种分级控制系统中的双工控制方法及其设备，以在不降低大规模功率转换设备的容量的情况下以额定容量驱动大规模功率转换设备，尽管在随机控制器中产生故障 在大型电力转换设备的分级控制系统下的下层。 构成：多个光接收电路单元（301,302）分别接收来自单元控制器（101,102）的HB（心跳）信号和触发脉冲信号。 EPLD（可擦写可编程逻辑器件）（303）接收通过光接收电路单元（301,302）接收的HB信号和触发脉冲信号，并且通过周期测量来判断单元控制器（101,102）是否正常 HB信号。 如果单元控制器（101,102）正常，则EPLD（303）将从单元控制器（101,102）输入的点火脉冲信号再次发送到相应的单元控制器（101,102）。 如果随机单元控制器发生故障，则EPLD将从正常单元控制器输入的触发脉冲信号同时发送到异常单元控制器和正常单元控制器。
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公开(公告)号：KR100374904B1
公开(公告)日：2003-03-06
申请号：KR1020000049352
申请日：2000-08-24
Applicant: 한국전기연구원
IPC: G01R31/34
Abstract: PURPOSE: A fault diagnosis apparatus and method of a phase controlled rectifier are provided, which can diagnose the phase controlled rectifier rapidly without dissembling a device or an additional wire. CONSTITUTION: An excitation control system(30) supplying a DC voltage to a field winding(3) of a synchronous generator(1) further comprises a fault diagnosis apparatus(40) diagnosing a normal operation of a phase controlled rectifier(8) in the excitation control system. The fault diagnosis apparatus comprises a signal processor part(10) performing a noise removal and scaling by receiving a DC output voltage of the phase controlled rectifier, and an analog-digital converter(11) converting an analog signal from the signal processor part into a digital signal, and a CPU(12) performing a DFT(Discrete Fourier Transform) by receiving data from the analog-digital converter and performing a fault diagnosis as to the phase controlled rectifier according to the result of the DFT.
Abstract translation: 本发明提供了一种相控整流器的故障诊断装置和方法，能够快速诊断相控整流器，无需拆卸设备或附加线缆。 本发明提供了一种用于向同步发电机（1）的励磁绕组（3）供应直流电压的励磁控制系统（30），还包括故障诊断装置（40），其诊断相控整流器 励磁控制系统。 该故障诊断设备包括：信号处理器部分（10），通过接收相位控制整流器的DC输出电压来执行噪声去除和缩放;以及模数转换器（11），将来自信号处理器部分的模拟信号转换为 数字信号，以及通过接收来自模数转换器的数据并根据DFT的结果对相控整流器进行故障诊断的DFT（离散傅里叶变换）的CPU（12）。
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公开(公告)号：KR1020020035328A
公开(公告)日：2002-05-11
申请号：KR1020000065572
申请日：2000-11-06
Applicant: 한국전기연구원
IPC: G01R31/00
Abstract: PURPOSE: A diagnostic system for an AVR control equipment is provided to perform an on-line diagnosis which stabilizes, maintains, and repairs power generating equipment at low costs. CONSTITUTION: An auto-voltage regulator(3) regulates an alternating voltage generated by a power generator(1) to a constant voltage. An exciter(4) outputs an exciting current and voltage according to a voltage from the auto-voltage regulator(3). A signal processor(5) converts terminal and field voltages from the power generator(1) and real values with respect to effective and reactive powers into voltage/current data of a diagnostic range suitable for a predetermined signal system. A data acquisition section acquires diagnostic data processed by the signal processor(5). A PC assembly(6) stores a virtual mathematical model corresponding to various forms of the exciter(4) and the auto-voltage regulator(3). The PC assembly(6) compares and analyzes the diagnostic data from the acquisition section with a really measured model response by a predetermined diagnostic algorithm and displays it a user.
Abstract translation: 目的：提供AVR控制设备的诊断系统，进行在线诊断，以低成本稳定，维护和维修发电设备。 构成：自动调压器（3）将发电机（1）产生的交流电压调节到恒定电压。 激励器（4）根据来自自动调压器（3）的电压输出励磁电流和电压。 信号处理器（5）将来自功率发生器（1）的端子和场电压以及有效和无功功率的实际值转换成适用于预定信号系统的诊断范围的电压/电流数据。 数据采集部分获取由信号处理器（5）处理的诊断数据。 PC组件（6）存储对应于各种形式的激励器（4）和自动调压器（3）的虚拟数学模型。 PC组件（6）通过预定的诊断算法将来自采集部分的诊断数据与真实测量的模型响应进行比较和分析，并将其显示给用户。
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公开(公告)号：KR1020020035327A
公开(公告)日：2002-05-11
申请号：KR1020000065571
申请日：2000-11-06
Applicant: 한국전기연구원
IPC: G01R19/00
Abstract: PURPOSE: A diagnostic system for an AVR control equipment is provided to improve reliance of a power supply and an electric equality by easily diagnosing, maintaining, and repairing the AVR control equipment. CONSTITUTION: An auto-voltage regulator(3) regulates an alternating voltage generated by a power generator(1) to a constant voltage. An exciter(4) outputs an exciting current and voltage according to a voltage from the auto-voltage regulator(3). A signal processor(5) converts terminal and field voltages from the power generator(1) and real values with respect to effective and reactive powers into voltage/current data of a diagnostic range suitable in a predetermined signal system. A data acquisition section acquires the voltage/current data from the signal processor(5). A PC assembly(6) analyzes diagnostic data of the data acquisition section by a predetermined diagnostic algorithm and displays it a user.
Abstract translation: 目的：提供AVR控制设备的诊断系统，通过轻松诊断，维护和维修AVR控制设备，提高电源的依赖性和电气性。 构成：自动调压器（3）将发电机（1）产生的交流电压调节到恒定电压。 激励器（4）根据来自自动调压器（3）的电压输出励磁电流和电压。 信号处理器（5）将来自发电机（1）的端子和场电压以及有效和无功功率的实际值转换成适用于预定信号系统的诊断范围的电压/电流数据。 数据采集部分从信号处理器（5）获取电压/电流数据。 PC组件（6）通过预定的诊断算法分析数据采集部分的诊断数据并将其显示给用户。
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公开(公告)号：KR1020020016182A
公开(公告)日：2002-03-04
申请号：KR1020000049352
申请日：2000-08-24
Applicant: 한국전기연구원
IPC: G01R31/34
Abstract: PURPOSE: A fault diagnosis apparatus and method of a phase controlled rectifier are provided, which can diagnose the phase controlled rectifier rapidly without dissembling a device or an additional wire. CONSTITUTION: An excitation control system(30) supplying a DC voltage to a field winding(3) of a synchronous generator(1) further comprises a fault diagnosis apparatus(40) diagnosing a normal operation of a phase controlled rectifier(8) in the excitation control system. The fault diagnosis apparatus comprises a signal processor part(10) performing a noise removal and scaling by receiving a DC output voltage of the phase controlled rectifier, and an analog-digital converter(11) converting an analog signal from the signal processor part into a digital signal, and a CPU(12) performing a DFT(Discrete Fourier Transform) by receiving data from the analog-digital converter and performing a fault diagnosis as to the phase controlled rectifier according to the result of the DFT.
Abstract translation: 目的：提供可控整流器的故障诊断装置和方法，可以快速诊断相控整流器，而不会拆卸设备或附加线。 构成：向同步发电机（1）的励磁绕组（3）提供直流电压的励磁控制系统（30）还包括故障诊断装置（40），用于诊断相控可控整流器（8）的正常工作 励磁控制系统。 该故障诊断装置包括通过接收相控整流器的DC输出电压来执行噪声消除和缩放的信号处理器部分（10）和将来自信号处理器部分的模拟信号转换为 数字信号，以及通过从模拟数字转换器接收数据执行DFT（离散傅立叶变换）的CPU（12），并根据DFT的结果对相控整流器执行故障诊断。
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