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公开(公告)号：US5561579A
公开(公告)日：1996-10-01
申请号：US334741
申请日：1994-11-04
申请人： Laszlo Gyugyi , Miklos Sarkozi
发明人： Laszlo Gyugyi , Miklos Sarkozi
摘要： A solid-state circuit breaker with fault current conduction is described. The circuit includes a power sensor connected to a power line having an up-stream side and a down-stream side. The output of the power sensor is conveyed to a switch selection circuit that identifies a line disturbance on the power line. In response to a line disturbance, the switch selection circuit generates a set of output signals. The output signals force the opening of a fault current interruption circuit including a set of turn-off thyristors. The turn-off thyristors respond to the line disturbance within a fraction of a power signal cycle to provide isolation between the up-stream side and downstream side of the power line. An alternate power source may then be applied to the down-stream side of the power line. If the line disturbance exists on the down-stream side of the power line, the output signals force the closing of a fault current conduction circuit including a set of thyristors connected in series with a reactor. The closing of the fault current conduction circuit forces the conduction of a fault current from the reactor that allows the activation of circuit breakers positioned on the down-stream side of the power line. As a result, a conventional hierarchical circuit breaker control strategy is maintained.
摘要翻译： 描述了具有故障电流传导的固态断路器。 该电路包括连接到具有上游侧和下游侧的电力线的功率传感器。 功率传感器的输出被传送到识别电力线上的线路干扰的开关选择电路。 响应于线路干扰，开关选择电路产生一组输出信号。 输出信号迫使包括一组关断晶闸管的故障电流中断电路打开。 关断晶闸管在功率信号周期的一小部分内响应于线路干扰，以提供电力线的上游侧和下游侧之间的隔离。 然后可以将替代电源施加到电力线的下游侧。 如果在电力线的下游侧存在线路干扰，则输出信号迫使包括与反应器串联连接的一组晶闸管的故障电流传导电路闭合。 故障电流传导电路的闭合迫使来自电抗器的故障电流的传导允许激活位于电源线下游侧的断路器。 结果，维持传统的分级断路器控制策略。
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2.发明授权Apparatus and method for dynamic voltage restoration of utility distribution networks 失效公用事业配电网动态电压恢复装置及方法
公开(公告)号：US5329222A
公开(公告)日：1994-07-12
申请号：US983492
申请日：1992-11-30
CPC分类号： H02J3/1842 , H02J3/1814 , Y02E40/18 , Y02E40/22
摘要： A system and method is provided compensating utility distribution line transients such as voltage sags in a dynamic manner, by inserting a voltage signal in series with the distribution signal having a magnitude and phase to effectively cancel out the voltage deviation caused by a network disturbance. An energy storage device such as a storage capacitor is used to provide energy to an inverter circuit which is controlled to generate the series-inserted signal. Preferably a converter such as a chopper is utilized between the storage element and the inverter, to provide a constant dc input to the inverter. A controller generates a corrective error signal based upon the deviation between the utility supply voltage as affected by the disturbance, and the nominal ideal voltage signal, and adjusts the insertion voltage so as to optimize real power delivery to the utility distribution line.
摘要翻译： 通过与具有幅度和相位的分配信号串联插入电压信号来有效地消除由网络干扰引起的电压偏差，提供了一种系统和方法，以动态方式补偿诸如电压骤降的公用设施分布线瞬变。 诸如存储电容器的能量存储装置用于向被控制以产生串联插入信号的逆变器电路提供能量。 优选地，在存储元件和逆变器之间使用诸如斩波器的转换器，以向逆变器提供恒定的直流输入。 控制器根据受干扰影响的公用电源电压与标称理想电压信号之间的偏差产生校正误差信号，并调整插入电压，以便优化到公用设施配电线路的实际功率输送。
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3.发明授权Unrestricted frequency changer system and adjustable frequency AC motor drive using such a system 失效无限制的变频器系统和可调频率交流电机驱动使用这种系统
公开(公告)号：US4488216A
公开(公告)日：1984-12-11
申请号：US490079
申请日：1983-04-29
申请人： Laszlo Gyugyi , Miklos Sarkozi
发明人： Laszlo Gyugyi , Miklos Sarkozi
摘要： In a static frequency changer controlled by adjusting the time of conduction of the bilateral switching units forming static converters, the time of conduction is split into n time intervals of conduction of respective subdurations adding-up to be equivalent to the effective time of conduction of the controlled switching unit, and such subdurations are spread and distributed throughout the time period of control of the switching unit within the original switching pattern of the converters, thereby to improve the quality of the output and input currents.
摘要翻译： 在通过调整形成静态转换器的双向开关单元的导通时间来控制的静态变频器中，传导时间被分成相关的各个小区的n个时间间隔的传导，相当于传导的有效时间 控制开关单元，并且在转换器的原始开关模式中的开关单元的控制的整个时间段期间扩展和分布这样的子电路，从而提高输出和输入电流的质量。
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公开(公告)号：US4219277A
公开(公告)日：1980-08-26
申请号：US932234
申请日：1978-08-09
IPC分类号： G01N21/93 , G01N21/89 , G01N21/94 , G01N21/952 , G01N21/22
CPC分类号： G01N21/89
摘要： This invention is an improved method for scanning for flaws on a surface utilizing dynamic correction. Each individual scan signal is divided into a large number of increments, each increment representing a predetermined position in the scan. A dynamic average is computed for each of the scan positions and flaws are detected by comparing the increment signals to the dynamic average signal for the same position. This technique is especially useful to detect flaws on high quality tubing, such as used for nuclear reactor fuel rods or for nuclear reactor steam generator tubing.
摘要翻译： 本发明是利用动态校正扫描表面上的瑕疵的改进方法。 每个单独的扫描信号被分成大量的增量，每个增量表示扫描中的预定位置。 对于每个扫描位置计算动态平均值，并且通过将增量信号与相同位置的动态平均信号进行比较来检测缺陷。 这种技术特别适用于检测高质量管道上的缺陷，例如用于核反应堆燃料棒或核反应堆蒸汽发生器管道的缺陷。
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公开(公告)号：US4599553A
公开(公告)日：1986-07-08
申请号：US707000
申请日：1985-02-28
申请人： Michael B. Brennen , Miklos Sarkozi
发明人： Michael B. Brennen , Miklos Sarkozi
CPC分类号： H02J3/1842 , Y02E40/12 , Y02E40/22
摘要： A static VAR generator for providing reactive compensation incorporating a malfunction detector. The static VAR generator comprises a reactance which is linearly responsive to a first linearized control signal and produces an output signal proportional to the reactive compensation which provides a feedback signal. A director control uses the feedback signal and an adjustable reference signal to provide the first linearized control signal based on the difference between the reference and feedback signals. A tracker controller provides a second linearized control signal based on the reference and feedback signals. The second control signal is compensated by an equalizer that determines the difference between the first and second control signals. The compensation counters the difference between the first and second control signals caused by the offset and component tolerances in the two controllers and makes the second control signal substantially equal to and track the first control signal. A first comparator conpares the compensated second control signal with the first control signal. Whenever these two control signals are not substantially equal, a fault has occurred in one of the two controllers. A second comparator compares the first control signal with the output signal. Whenever these two signals are not substantially equal, a fault has occurred in the generator.In an alternate embodiment an additional tracker control, comparators and default decoder provide a 2 out of 3 polling system for indicating when one of the three controllers is malfunctioning.
摘要翻译： 静态VAR发生器，用于提供包含故障检测器的无功补偿。 静态VAR发生器包括对第一线性化控制信号线性响应并产生与无功补偿成比例的输出信号的电抗，其提供反馈信号。 导向器控制使用反馈信号和可调参考信号，以基于参考和反馈信号之间的差来提供第一线性化控制信号。 跟踪器控制器基于参考和反馈信号提供第二线性化控制信号。 第二控制信号由确定第一和第二控制信号之间的差的均衡器补偿。 补偿针对由两个控制器中的偏移和分量公差引起的第一和第二控制信号之间的差异，并使第二控制信号基本上等于并跟踪第一控制信号。 第一比较器将补偿的第二控制信号与第一控制信号进行比较。 无论何时这两个控制信号基本上不相等，两个控制器之一发生故障。 第二比较器将第一控制信号与输出信号进行比较。 无论何时这两个信号基本上不相等，发生器发生故障。 在替代实施例中，附加跟踪器控制，比较器和默认解码器提供3个轮询系统中的2个，用于指示三个控制器之一何时发生故障。
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6.发明授权
公开(公告)号：US4253768A
公开(公告)日：1981-03-03
申请号：US932235
申请日：1978-08-09
IPC分类号： G01N21/88 , G01N21/89 , G01N21/892 , G01N21/952 , G01N21/32
CPC分类号： G01N21/89
摘要： This invention is a system of automatically classifying defects both for sorting defective products (metallic surfaces, especially tube surfaces) as to the reworking operation required for correcting the defect, and for classifying the defect as to the preceding manufacturing operation which is the most probable cause of that defect and sending a signal to that operation to provide for adjustments to minimize future defects. The system uses a source of electromagnetic radiation (typically a laser beam which is scanned across the surface) and at least two sensors (adjusted such that the radiation is reflected from a defect-free surface principally received by one of the sensors but that there is a measured amount of radiation in the other sensor). An average signal of the principal sensor is developed as a function of scan position. Threshold circuitry detects when the ratio of sensor signal to average signal varies by a predetermined amount. Special circuitry is used to detect the essentially simultaneous occurrence of at least two different preselected combinations of signal variations to identify the type of defect.
摘要翻译： 本发明是一种自动分类缺陷产品（金属表面，特别是管表面）的缺陷，用于校正缺陷所需的返工操作，以及用于对作为最可能原因的先前制造操作的缺陷进行分类的系统 并向该操作发送信号以提供调整以最小化未来的缺陷。 该系统使用电磁辐射源（通常是穿过表面扫描的激光束）和至少两个传感器（调整为使得辐射从主要由传感器之一接收的无缺陷表面反射，但是存在 在另一个传感器中测量的辐射量）。 主传感器的平均信号作为扫描位置的函数展开。 阈值电路检测传感器信号与平均信号的比率何时变化预定量。 特殊电路用于检测信号变化的至少两种不同预选组合的基本同时出现以识别缺陷的类型。
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