公开(公告)号：KR1020100054219A

公开(公告)日：2010-05-25

申请号：KR1020080113032

申请日：2008-11-14

Applicant: 한국전기연구원

Inventor： 강대욱 ,  이기창 ,  정연호 ,  김종무 ,  문지우 ,  구대현

IPC: B60L13/06

Abstract: PURPOSE: An error processing method of a bar code positioning system is provided to precisely control the speed and the location of a magnetic levitation vehicle by easily processing the error at junction between bar code tapes. CONSTITUTION: A bar code positioning system comprises a bar code reader(28) and a bar code tape(26). A bar code reader is installed in a chassis structure of a vehicle. A bar code tape is attached along a guide rail(10). When the bar code reader deciphers the bar code tape, an error is generated in junction between the bar code tapes. When an error is generated when a vehicle is driven at a constant speed, a current location value is not used. When an error is generated when a vehicle is accelerated or decelerated, the current location value is calculated by adding moving distance and the final location value.

Abstract translation: 目的：提供条形码定位系统的错误处理方法，通过轻松处理条形码带之间的连接处的错误来精确控制磁悬浮车辆的速度和位置。 构成：条形码定位系统包括条形码阅读器（28）和条形码带（26）。 条形码阅读器安装在车辆的底盘结构中。 条形码带沿导轨（10）安装。 当条形码读取器解密条形码磁带时，在条形码磁带之间的连接处产生错误。 当以恒定速度驱动车辆产生错误时，不使用当前的位置值。 当车辆加速或减速时产生错误时，通过添加移动距离和最终位置值来计算当前位置值。

公开(公告)号：KR101410731B1

公开(公告)日：2014-06-24

申请号：KR1020130015280

申请日：2013-02-13

Applicant: 한국전기연구원

Inventor： 박정우 ,  강대욱 ,  김종현 ,  유동욱 ,  문지우 ,  권진수 ,  김춘성 ,  배득우

IPC: H02M7/483

CPC classification number: H02M1/12 ,  H02J3/36 ,  H02M1/15 ,  H02M5/4585 ,  H02M7/483 ,  H02M2007/4835 ,  Y02E60/60

Abstract: The present invention relates to a method for suppressing a circulating current of a modular multi-level converter for high-voltage direct current transmission, capable of completely removing the AC component of the circulating current which is displayed in an HVDC modular multi-level converter in order to reduce costs by selecting a relatively small current of a capacitor and an IGBT which is applied to the modular multi-level converter; of stabilizing sub-module voltage of the converter for the high voltage DC transmission having the modular multi-level converter; of improving the efficiency of multi-level converter; and greatly improving the waveform of the current flowing through a high voltage DC line.

Abstract translation: 本发明涉及一种用于抑制用于高压直流传输的模块化多电平转换器的循环电流的方法，其能够完全去除在HVDC模块化多电平转换器中显示的循环电流的AC分量 通过选择施加到模块化多电平转换器的电容器和IGBT的相对小的电流来降低成本; 稳定用于具有模块化多电平转换器的高压DC传输的转换器的子模块电压; 提高多级转换器的效率; 并大大改善流经高压直流线路的电流的波形。

公开(公告)号：KR1020140057760A

公开(公告)日：2014-05-14

申请号：KR1020120123903

申请日：2012-11-05

Applicant: 한국전기연구원

Inventor： 박정우 ,  강대욱 ,  문지우 ,  권진수 ,  김춘성 ,  배득우

IPC: H02J3/36 ,  H02M1/14

CPC classification number: Y02E60/60

Abstract: The present invention relates to a method for restricting a current reference value and a generation reference value of a grid-connected power conversion device and, more specifically, to a method for restricting a current reference value and a generation reference value of a grid-connected power conversion device capable of, even in case of an unbalanced three-phase voltage or a momentary power failure, supplying reactive power while not stopping a renewable energy system. The present invention divides current and voltage data of a grid into a positive-phase and a negative-phase component, uses the positive phase component for controlling active power and reactive power as in the existing technology, and uses the negative-phase component for additional control using a negative-phase component current controller. By performing control in a link with a renewable energy source (a generator) in consideration of the maximum current and active power of the power conversion device, the present invention is able to stably control DC-link voltage and active power and, even in case of an unbalanced three-phase voltage or a momentary power failure, supply reactive power while not stopping the renewable energy system.

Abstract translation: 本发明涉及一种用于限制并网电力转换装置的电流参考值和发电参考值的方法，更具体地说，涉及一种用于限制电网连接的电流参考值和发电参考值的方法 功率转换装置，即使在三相不平衡电压或瞬时停电的情况下也能够提供无功功率而不停止可再生能源系统。 本发明将电网的电流和电压数据划分为正相和负相分量，如现有技术中那样使用正相分量来控制有功功率和无功功率，并使用负相分量作为额外的 使用负相元件电流控制器进行控制。 考虑到功率转换装置的最大电流和有功功率，通过与可再生能源（发电机）的连接进行控制，本发明能够稳定地控制直流母线电压和有功功率， 不平衡的三相电压或瞬时电源故障，在不停止可再生能源系统的同时提供无功功率。

公开(公告)号：KR101214446B1

公开(公告)日：2012-12-21

申请号：KR1020110118328

申请日：2011-11-14

Applicant: 한국전기연구원

Inventor： 강대욱 ,  박정우 ,  권진수 ,  문지우 ,  배득우 ,  오창훈

IPC: H02M7/483

Abstract: PURPOSE: A mirror type multilevel converter is provided to stably supply power for a power converting system with high voltage and capacity. CONSTITUTION: A top circuit unit(100) includes a top capacitor(110), a first switching device(121), and a second switching device(122). The first switching device and the second switching device are connected in parallel to the top capacitor. The first switching device and the second switching device form one set(120) and are serially connected in the same direction. A bottom circuit unit(200) includes a bottom capacitor(210), a third switching device(221), and a fourth switching device(222). The third switching device and the fourth switching device form one set(220) and are serially connected in the same direction.

Abstract translation: 目的：提供一种镜式多电平转换器，用于为具有高电压和容量的电力转换系统稳定供电。 构成：顶部电路单元（100）包括顶部电容器（110），第一开关装置（121）和第二开关装置（122）。 第一开关器件和第二开关器件并联连接到顶部电容器。 第一开关装置和第二开关装置形成一组（120）并沿同一方向串联连接。 底部电路单元（200）包括底部电容器（210），第三开关装置（221）和第四开关装置（222）。 第三开关装置和第四开关装置形成一组（220）并沿同一方向串联连接。

公开(公告)号：KR1020110068283A

公开(公告)日：2011-06-22

申请号：KR1020090125163

申请日：2009-12-16

Applicant: 한국전기연구원

Inventor： 박정우 ,  강대욱 ,  오창훈 ,  문지우 ,  배득우 ,  권진수

IPC: H02P9/44

CPC classification number: H02P9/44 ,  H02K19/16 ,  H02P21/0003 ,  H02P2103/20

Abstract: PURPOSE: A synchronizing method for a generation system including a winding type induction generator is provided to prevent an individual synchronization angle reset process by automatically synchronizing a stator voltage vector with a system voltage vector regardless of the size of a system voltage. CONSTITUTION: A Harr wavelet function with 2 level and a voltage signal with a noise are successively convoluted. The voltage signal is divided into three frequency components. A signal is rectified by applying a threshold and is restored. A new voltage signal without the noise is varied at a small slope range.

Abstract translation: 目的：提供一种用于包括绕组型感应发电机的发电系统的同步方法，以通过使定子电压矢量与系统电压矢量自动同步而不考虑系统电压的大小来防止单独的同步角度复位过程。 构成：具有2级的Harr小波函数和具有噪声的电压信号被连续地卷积。 电压信号被分为三个频率分量。 通过应用阈值来纠正信号并被恢复。 没有噪声的新电压信号在较小的斜率范围内变化。

公开(公告)号：KR1020110060262A

公开(公告)日：2011-06-08

申请号：KR1020090116796

申请日：2009-11-30

Applicant: 한국전기연구원

Inventor： 강대욱 ,  박정우 ,  오창훈 ,  문지우 ,  배득우 ,  권진수

IPC: H02M7/48 ,  H02J3/01

Abstract: PURPOSE: A power converting apparatus of a synchronous generator is provided to ensure a harmonic current property by constituting a 2-level converter and a 3-level NPC converter concurrently. CONSTITUTION: A generator side converter(10) is made of a 2-level converter. One converter(20a) among system side converters is made of a multi-level NPC converter. Th multi-level NPC converter is a 3-level NPC converter whose output is controlled according to a voltage command value of a controller. A rest system side converter(20) is composed of a 2-level converter. A controller controls compensation of the harmonic current induced from each system side converter into the system side.

Abstract translation: 目的：提供同步发电机的电力转换装置，通过同时构成2级转换器和3级NPC转换器来确保谐波电流特性。 构成：发电机侧转换器（10）由2电平转换器构成。 系统侧转换器中的一个转换器（20a）由多级NPC转换器构成。 多级NPC转换器是一个3级NPC转换器，其输出根据控制器的电压指令值进行控制。 休息系统侧转换器（20）由2级转换器构成。 控制器控制从每个系统侧转换器引入系统侧的谐波电流的补偿。