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公开(公告)号：KR1020050003732A
公开(公告)日：2005-01-12
申请号：KR1020030045215
申请日：2003-07-04
Applicant: 현대자동차주식회사 , 학교법인 포항공과대학교
CPC classification number: H02M7/5387 , B60L11/14 , B60L15/025 , B60L2220/12 , H02M2001/007 , H02M2007/53876 , Y02T10/643 , Y02T10/70 , Y02T10/7077
Abstract: PURPOSE: A vector-controller dual inverter system is provided to prevent decrease in output of an induction motor by performing a back electromotive force compensation and a reactive power compensation by using separate inverters. CONSTITUTION: A vector-controller dual inverter system comprises a first inverter(120) and a second inverter(140). The first inverter is connected to one side of a stator coil of an induction motor(130), and performs a back electromotive force compensation of the induction motor. The second inverter is connected to the other side of the stator coil, and performs a reactive power compensation for the induction motor. The side of the first inverter, opposite to the induction motor is connected to a battery(110), and the side of the second inverter, opposite to the induction motor is connected to a capacitor(150).
Abstract translation: 目的：提供矢量控制器双变频器系统，通过使用单独的逆变器执行反电动势补偿和无功补偿来防止感应电动机的输出降低。 构成：矢量控制器双逆变器系统包括第一反相器（120）和第二反相器（140）。 第一逆变器与感应电动机（130）的定子线圈的一侧连接，对感应电动机进行反电动势补偿。 第二逆变器与定子线圈的另一侧连接，对感应电动机进行无功补偿。 第一逆变器与感应电动机相对的一侧连接到电池（110），并且与感应电动机相对的第二逆变器的一侧连接到电容器（150）。
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公开(公告)号：KR100555654B1
公开(公告)日：2006-03-03
申请号：KR1020020068869
申请日：2002-11-07
Applicant: 주식회사 스카이카 , 학교법인 포항공과대학교
IPC: B61L5/00
Abstract: 본 발명은 궤도차량의 차량장착형 분기장치로서 특히 차량의 분기를 위하여 궤도를 움직이는 것이 아니라 차량에 장착된 장치가 스스로 원하는 방향을 선택하여 차량을 유도하는 장치에 관한 것이다. 따라서, 본 발명은 많은 수효의 차량이 짧은 시간간격을 유지하면서 운행되는 경우에 효과적으로 사용될 수 있다. 본 발명이 적용되는 대표적인 예가 2-6인승의 소형차량을 수십 또는 수백 대씩 한꺼번에 고가궤도 위에서 운행하는 PRT(Personal Rapid Transit) 시스템이다. PRT시스템에 적용된 종래의 분기장치가 횡방향 안내레일과 별도의 분기용 안내레일을 구비하는 것이 일반적이며 여기에 덧붙여 비상제동용 레일도 별도로 구비하여야 하는 단점이 있는 반면, 본 발명의 특징은 분기용 안내륜과 횡방향 안내륜을 일체로 구성하여 하나의 레일로 분기 및 횡방향 가이드를 동시에 할 수 있다는 점과 이 레일을 비상제동 및 주차용 제동레일로도 활용한다는 데 있다.
궤도차량, 분기장치, 안내로, 분기용 레일, 분기륜, 제동레일, 회전축, 회전팔, 수평막대, 비상제동장치, 캘리퍼.-
公开(公告)号：KR100429914B1
公开(公告)日：2004-05-03
申请号：KR1020020001187
申请日：2002-01-09
Applicant: 학교법인 포항공과대학교
IPC: H02J9/08
Abstract: PURPOSE: An emergency electricity generation system is provided to be capable of efficiently coping with an unstable state of a system power by using a flywheel. CONSTITUTION: An engine(10) is used as a mechanical energy source of a motor/generator part(30). An interconnection part(20) is configured to interconnect the engine and the motor/generator part. A field winding current supplying device supplies a field winding current to the motor/generator part. A control device(60) is configured to control the motor/generator part, the engine, and the interconnection part. A circuit breaker(50) is controlled by the control part and breaks a system power(80) and the motor/generator part at the first starting of an emergency electricity system. A flywheel(40) is connected to the motor/generator part to maintain a voltage of the system power during a predetermined time when the system power is abnormal.
Abstract translation: 目的：提供一种应急发电系统，能够通过使用飞轮来有效地应对系统电源的不稳定状态。 构成：发动机（10）用作电动机/发电机部件（30）的机械能源。 互连部件（20）构造成互连发动机和电动机/发电机部件。 励磁绕组电流供给装置向电动机/发电机部分供给励磁绕组电流。 控制装置（60）构造成控制电动机/发电机部件，发动机和互连部件。 断路器（50）由控制部分控制并且在应急电力系统第一次启动时断开系统电源（80）和电动机/发电机部分。 飞轮（40）连接到电动机/发电机部分，以在系统电源异常的预定时间期间维持系统电力的电压。
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公开(公告)号：KR1020040000161A
公开(公告)日：2004-01-03
申请号：KR1020020035329
申请日：2002-06-24
Applicant: 학교법인 포항공과대학교
IPC: H02P21/00
Abstract: PURPOSE: An apparatus and a method for estimating stator flux of an inductive motor are provided to enhance the reliability of the estimation of the stator flux by correcting a flux estimation error due to a variation of parameters and a variation of stator resistors, and a voltage error. CONSTITUTION: An apparatus for estimating flux of a state of an inductive motor includes an auxiliary current production portion(101), a calculator, a corrective term production portion(103), a flux compensation portion(104), and a flux production portion(109). The auxiliary current production portion(101) produces the auxiliary current from the d-axis current, the q-axis current, and the estimated flux of the inductive motor. The calculator is used for calculating a current error from the auxiliary current and the d-axis current. The corrective term production portion(103) produces an intensity correction term and an angle correction term of the stator flux on the basis of the d-axis current, each frequency of the stator flux, and the current error. The flux compensation portion(104) corrects the stator flux on the basis of the intensity correction term and the angle correction term. The flux production portion(109) estimates the stator flux on the basis of the voltage and the current applied to the inductive motor and the corrected stator flux.
Abstract translation: 目的：提供一种用于估计感应电动机的定子磁通量的装置和方法，以通过校正由于参数变化和定子电阻器的变化引起的磁通估计误差来提高定子磁通估计的可靠性，并且电压 错误。 构成：用于估计感应电动机的状态的通量的装置包括辅助电流产生部分（101），计算器，校正项产生部分（103），磁通补偿部分（104）和磁通产生部分 109）。 辅助电流产生部分（101）从d轴电流，q轴电流和感应电动机的估计磁通产生辅助电流。 计算器用于从辅助电流和d轴电流计算电流误差。 校正项产生部（103）根据d轴电流，定子磁通的每个频率和电流误差，产生定子磁通的强度校正项和角度校正项。 磁通补偿部分（104）根据强度校正项和角度校正项校正定子通量。 通量产生部（109）基于施加到感应电动机的电压和电流以及校正后的定子磁通来估计定子磁通。
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Patent Agency Ranking
公开(公告)号：KR1020010009089A
公开(公告)日：2001-02-05
申请号：KR1019990027256
申请日：1999-07-07
Applicant: 주식회사 포스코 , 학교법인 포항공과대학교
Abstract: PURPOSE: A method for controlling compensation for the inequality power and the instant low voltage is provided to prevent stopping of a continuous progress line by the low voltage by compensating the inequality power and the instant low voltage and to gain dependence on the compensation by making the error to the minimum. CONSTITUTION: A method for controlling compensation for the inequality power and the instant low voltage includes a few stages. In the first stage the power voltage, the voltage of a filter and the output current of an inverter are measured and the current is calculated. In the second stage converting coordinates of 3 phases to those of 2 phases. In the third stage the power voltage is separated into the positive phase sequence component of voltage and negative phase sequence component of voltage. In the fourth stage the positive phase sequence component of voltage is compensated. In the fifth stage the negative phase sequence component of voltage is compensated. In the sixth stage the inverter output current is compensated in the basis of the compensated voltage. In the seventh stage the pulse width of a space vector is converted. In the eighth stage the inverter is controlled through the gate driving portion.
Abstract translation: 目的：提供一种用于控制不等式功率和瞬时低电压补偿的方法，以通过补偿不等式功率和瞬时低电压来防止连续进行线路由低电压停止，并通过使 误差到最小。 构成：用于控制不等式功率和瞬时低电压补偿的方法包括几个阶段。 在第一阶段，测量电源电压，滤波器的电压和逆变器的输出电流，并计算电流。 在第二阶段将3个阶段的坐标转换为2个阶段的坐标。 在第三阶段，电源电压分为电压和负相序分量的正相序分量。 在第四阶段，补偿电压的正相序分量。 在第五阶段，电压的负相序分量被补偿。 在第六级，基于补偿电压对变频器输出电流进行补偿。 在第七阶段，空间矢量的脉冲宽度被转换。 在第八级中，通过栅极驱动部分控制逆变器。
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公开(公告)号：KR1020040040675A
公开(公告)日：2004-05-13
申请号：KR1020020068869
申请日：2002-11-07
Applicant: 주식회사 스카이카 , 학교법인 포항공과대학교
IPC: B61L5/00
Abstract: PURPOSE: A detachable branch unit of a railcar is provided to perform simultaneously a branching operation, a horizontal guide operation, and a braking operation by forming branch guide wheels, horizontal guide wheels, and a braking unit with one body. CONSTITUTION: A detachable branch unit of a railcar includes a couple of branch rails, a plurality of guide and branch wheels(30a-30d), a plurality of four-bar linkage rotary shafts(32a,32b), a plurality of rotary arms(31a,31c,31d), a plurality of horizontal four-bar linkage bars(34a,34b), and a plurality of housings(33a,33b). The branch rails are installed at a top opening part of a guide wall. The guide and branch wheels(30a-30d) correspond to the branch rails. The rotary arms(31a,31c,31d) are arranged at both ends of the four-bar linkage rotary shafts(32a,32b). The horizontal four-bar linkage bars(34a,34b) are used for connecting the guide and branch wheels(30a,30d) of the right side to the guide and branch wheels(30b,30c) of the left side. The housings(33a,33b) are used for fixing a link assembly to a main frame(20).
Abstract translation: 目的：提供轨道车辆的可拆卸分支单元，通过形成分支导轮，水平导轮和具有一体的制动单元同时进行分支操作，水平引导操作和制动操作。 构成：轨道车辆的可拆卸分支单元包括一对分支轨道，多个引导和分支轮（30a-30d），多个四杆联动旋转轴（32a，32b），多个旋转臂（ 31a，31c，31d），多个水平四杆连杆（34a，34b）和多个壳体（33a，33b）。 分支轨道安装在导向壁的顶部开口部分。 引导和分支轮（30a-30d）对应于分支轨道。 旋转臂（31a，31c，31d）设置在四杆连杆旋转轴（32a，32b）的两端。 水平四杆联动杆（34a，34b）用于将右侧的导向轮和分支轮（30a，30d）连接到左侧的引导件和分支轮（30b，30c）。 壳体（33a，33b）用于将连杆组件固定到主框架（20）。
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公开(公告)号：KR1020030060469A
公开(公告)日：2003-07-16
申请号：KR1020020001188
申请日：2002-01-09
Applicant: 학교법인 포항공과대학교
IPC: F02B75/40
CPC classification number: F02B63/041 , F02B75/12 , F02B75/40
Abstract: PURPOSE: A linear type generating system is provided to achieve improved energy efficiency by preventing losses of energy, while simplifying configuration of the system. CONSTITUTION: A linear type generating system comprises a rectilinear reciprocating motion engine(2); a linear generator(3) for converting the mechanical rectilinear reciprocating motion energy applied by the rectilinear reciprocating motion engine into an electrical energy; and a connection unit for directly connecting a driving unit which performs a rectilinear reciprocating motion in the rectilinear reciprocating motion engine, to a mover(20) of the linear generator having an armature coil.
Abstract translation: 目的：提供一种线性发生系统，通过防止能量损失，同时简化系统的配置，从而提高能源效率。 构成：线性发电系统包括直线往复运动发动机（2）; 用于将由直线往复运动引擎施加的机械直线往复运动能量转换为电能的线性发电机（3） 以及用于将在直线往复运动发动机中进行直线往复运动的驱动单元直接连接到具有电枢线圈的线性发电机的动子（20）的连接单元。
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公开(公告)号：KR1020030060468A
公开(公告)日：2003-07-16
申请号：KR1020020001187
申请日：2002-01-09
Applicant: 학교법인 포항공과대학교
IPC: H02J9/08
Abstract: PURPOSE: An emergency electricity generation system is provided to be capable of efficiently coping with an unstable state of a system power by using a flywheel. CONSTITUTION: An engine(10) is used as a mechanical energy source of a motor/generator part(30). An interconnection part(20) is configured to interconnect the engine and the motor/generator part. A field winding current supplying device supplies a field winding current to the motor/generator part. A control device(60) is configured to control the motor/generator part, the engine, and the interconnection part. A circuit breaker(50) is controlled by the control part and breaks a system power(80) and the motor/generator part at the first starting of an emergency electricity system. A flywheel(40) is connected to the motor/generator part to maintain a voltage of the system power during a predetermined time when the system power is abnormal.
Abstract translation: 目的：提供一种应急发电系统，能够通过使用飞轮有效应对系统电源的不稳定状态。 构成：发动机（10）用作电动机/发电机部件（30）的机械能源。 互连部件（20）构造成使发动机和电动机/发电机部件相互连接。 励磁绕组电流供给装置将励磁绕组电流提供给电动机/发电机部分。 控制装置（60）被配置为控制电动机/发电机部件，发动机和互连部件。 断路器（50）由控制部分控制，并在应急电力系统的第一次起动时断开系统电源（80）和电动机/发电机部件。 飞轮（40）连接到马达/发电机部件，以在系统电源异常的预定时间内保持系统电源的电压。
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公开(公告)号：KR100330662B1
公开(公告)日：2002-03-29
申请号：KR1019990062737
申请日：1999-12-27
Applicant: 학교법인 포항공과대학교
IPC: H02M7/00
Abstract: 본발명은 PWM 컨버터-인버터시스템의수명에가장큰 영향을주는직류링크단대형전해커패시터를소용량필름커패시터로대체할수 있는 PWM 컨버터제어장치에관한것이다. 인버터와컨버터시스템의파우어동력학을유도하고인버터에대한파우어동력학을마스터시스템으로, 컨버터파우어동력학을슬레이브시스템으로정한다. 이경우, 마스터시스템동력학을슬레이브시스템이추종할수 있도록하기위한직류링크단전력평형화제어기와직류링크커패시터에너지를이용한전압제어기로구성되어있다. 특히, 에너지를이용한전압제어는전체시스템을선형화하는장점이있다. 또한, 제안된제어방식은속응성이우수하기때문에직류링크단전압맥동을최소화시킨다. 따라서, 가격, 크기, 신뢰성에있어문제점이많은기존전해커패시터를반영구적인소형, 소용량의필름커패시터로교체할수 있다. 결과적으로제안된방식을사용할경우, PWM 컨버터-인버터시스템의가격이내리고, 크기가감소해설치면적이줄고, 신뢰성이크게향상된다.
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