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11. 发明授权

US4689733A Method for reducing dynamic overvoltages in an alternating-current system to which a direct-current system is connected 失效
标题翻译：用于减少直流系统连接到的交流系统中的动态过电压的方法
公开(公告)号：US4689733A
公开(公告)日：1987-08-25
申请号：US878322
申请日：1986-06-25
申请人： Gerhard Guth , Walter Kuhn , Gerhard Linhofer , Kadry Sadek
发明人： Gerhard Guth , Walter Kuhn , Gerhard Linhofer , Kadry Sadek
IPC分类号： H02H7/122 , H02H7/26 , H02J1/00 , H02J3/36 , H02H7/00
CPC分类号： H02J3/36 , H02H7/268 , Y02E60/60
摘要： Where different 3-phase systems are connected to each other via two static converters having an intermediate direct-current circuit, the exchange of power via the intermediate direct-current circuit can be interrupted by a severe disturbance, for example by failure of a static-converter or by line or busbar faults causing a short-circuiting of one of the static converters. This interruption means a change in the balance of effective power and, associated with this, a shedding of reactive load for the other undisturbed 3-phase system. To reduce high dynamic overvoltages which can lead to plant components being endangered or to operational disturbances, the firing angle of the static converter remaining in operation is regulated with dependence on the alternating voltage of the alternating-current system connected to this static converter, in such a manner that the overvoltage is reduced. This is carried out by regulating the current. The firing angle can be adjusted simultaneously with the short circuiting of the intermediate direct-current circuit by means of a short circuit device.
摘要翻译：在通过具有中间直流电路的两个静态转换器将不同的三相系统彼此连接的情况下，经由中间直流电路的电力交换可能被严重的干扰中断，例如静态 - 转换器或线路或母线故障导致其中一个静态转换器短路。这种中断意味着有效功率的平衡发生变化，与此相反，其他未受干扰的三相系统的无功负载脱落。为了减少高动态过电压，可导致工厂部件受到危及或受到操作干扰，剩余运行中的静态转换器的触发角度依赖于连接到该静态转换器的交流系统的交流电压进行调节过电压降低的方式。这是通过调节电流进行的。可以通过短路装置与中间直流电路的短路同时调节触发角。

12. 发明申请

US20070252574A1 Device for Adjusting the Impedance of a High Voltage Line Supplying an Alternating Current 有权
标题翻译：用于调节提供交流电流的高压线阻抗的装置
公开(公告)号：US20070252574A1
公开(公告)日：2007-11-01
申请号：US10595199
申请日：2004-09-01
申请人： Wilfried Breuer , Marcos Pereira , Kadry Sadek
发明人： Wilfried Breuer , Marcos Pereira , Kadry Sadek
IPC分类号： G05F1/445
CPC分类号： G05F1/455 , H02J3/1807 , Y02E40/30
摘要： A device (8), for adjusting the impedance of a high voltage line (9), supplying an alternating current, has at least one control coil (2), which may be inserted in series in the high voltage line (9) and at least one switching device (3,10), provided for each control coil (2). The device is compact and economical. A control unit (4) for controlling each switching device (3,10) is also provided, such that the reactance of the control coil (2), acting in the device may be adjusted by the switching of the switching device (3,10), whereby each switching device (3,10) is arranged parallel to the corresponding control coil (2) in a parallel branch (5).
摘要翻译：一种用于调节提供交流电流的高压线路（9）的阻抗的装置（8）具有至少一个控制线圈（2），其可以串联地插入高压线路（9）中并且在为每个控制线圈（2）提供的至少一个开关装置（3,10）。该设备结构紧凑，经济。还提供用于控制每个开关装置（3,10）的控制单元（4），使得可以通过开关装置（3,10）的切换来调节作用在装置中的控制线圈（2）的电抗），由此每个开关装置（3,10）在平行分支（5）中平行于相应的控制线圈（2）布置。

13. 发明授权

US06385063B1 Hybrid filter for an alternating current network 失效
标题翻译：用于交流网络的混合滤波器
公开(公告)号：US06385063B1
公开(公告)日：2002-05-07
申请号：US09720337
申请日：2000-12-22
申请人： Kadry Sadek , Marcos Pereira
发明人： Kadry Sadek , Marcos Pereira
IPC分类号： H02M112
CPC分类号： H02J3/01 , Y02E40/40
摘要： The invention relates to a hybrid for an AC mains system, with the hybrid filter having a passive and an active filter which are electrically connected in series, and with the active filter having a voltage source. According to the invention, a tuned filter, which is tuned to the rated frequency of the AC mains system, is electrically connected in parallel with the active filter. This results in a hybrid filter for an AC mains system, whose active filter is not loaded by the fundamental current component.
摘要翻译：本发明涉及用于交流电源系统的混合动力，其中混合式滤波器具有串联电连接的无源和有源滤波器，并且有源滤波器具有电压源。根据本发明，调谐到AC电源系统的额定频率的调谐滤波器与有源滤波器并联电连接。这导致用于AC电源系统的混合滤波器，其有源滤波器不由基波电流分量负载。

14. 发明授权

US5907234A Thyristor-switched capacitor bank 失效
标题翻译：晶闸管开关电容器组
公开(公告)号：US5907234A
公开(公告)日：1999-05-25
申请号：US18605
申请日：1998-02-04
申请人： Kadry Sadek , Marcos-Antonio Cavalcanti Pereira
发明人： Kadry Sadek , Marcos-Antonio Cavalcanti Pereira
IPC分类号： H02J3/18 , G05F1/70
CPC分类号： H02J3/1864 , Y02E40/12
摘要： A thyristor-controlled capacitor bank includes a thyristor switch and a capacitor bank. The capacitor bank is split into at least two series-connected capacitor groups. A series circuit including a thyristor switch and an inductor coil is connected in parallel with the capacitor group which is remote from a capacitor group at a mains power supply connection. A thyristor-switched capacitor bank is thus obtained which has a thyristor switch that therefore only needs to be constructed for a fraction of the mains power supply voltage itself, which is a major advantage for economic reasons.
摘要翻译：晶闸管控制的电容器组包括晶闸管开关和电容器组。电容器组分为至少两个串联的电容器组。包括晶闸管开关和电感线圈的串联电路与远离电源组电容器组的电容器组并联连接。因此，获得了一种晶闸管开关电容器组，其具有晶闸管开关，因此仅需要构成主电源电压本身的一部分，这是经济原因的主要优点。

15. 发明授权

US5780939A Method and apparatus for determining orders of non-characteristic harmonic currents, and for compensation of the noncharacteristic harmonic currents 失效
标题翻译：用于确定非特征谐波电流的次数以及非特性谐波电流补偿的方法和装置
公开(公告)号：US5780939A
公开(公告)日：1998-07-14
申请号：US446654
申请日：1995-05-26
申请人： Norbert Christl , Peter Lutzelberger , Kadry Sadek
发明人： Norbert Christl , Peter Lutzelberger , Kadry Sadek
IPC分类号： H02J3/01 , H02J3/36 , H02J1/02
CPC分类号： H02J3/01 , H02J3/36 , Y02E40/40 , Y02E60/60 , Y10T307/68
摘要： A method and an apparatus can determine the orders (z) of non-characteristic harmonic currents (Ih) of a second power supply grid, which is coupled to a first power supply grid using an HVDCT system. The apparatus and method also compensates for these non-characteristic harmonic currents (Ih), which are produced as a result of distortion (Uh) of the supply voltage (U1) which exists in the first grid because of a low-frequency harmonic and passes through the short coupling. The order (n) of the existing non-characteristic harmonics is determined by a voltage and/or current measurement of the voltage (U1) of the grid, from which order (n) the order (z) of the generated non-characteristic harmonics in the second grid is determined by a provided voltage-symmetry signal (SMG). This order (z) is supplied to filter logic of a compensation system. The energy quality is thus considerably improved, particularly in the case of grids which are not rigid.
摘要翻译： PCT No.PCT / DE92 / 01063 Sec。 371日期：1995年5月26日 102（e）日期1995年5月26日PCT提交1992年12月10日PCT公布。出版物WO94 / 14220 PCT 日期1994年6月23日一种方法和设备可以确定使用HVDCT系统耦合到第一电源网格的第二电源电网的非特征谐波电流（Ih）的阶数（z）。该装置和方法还补偿这些非特征谐波电流（Ih），其由于低频谐波并且通过而存在于第一电网中的电源电压（U1）的失真（Uh）的结果而产生通过短耦合。现有非特性谐波的阶数（n）由电网电压（U1）的电压和/或电流测量值决定，从其产生的非特征谐波的阶数（n）为阶数（z）在第二格栅中由提供的电压对称信号（SMG）确定。该顺序（z）被提供给补偿系统的过滤器逻辑。因此，能量质量得到显着改善，特别是在不刚性的网格的情况下。

16. 发明授权

US4685044A Method and apparatus for suppressing resonance phenomena in the A-C network on the inverter side of a high voltage D-C transmission system 失效
标题翻译：用于抑制高压D-C传输系统的逆变器侧的A-C网络中的共振现象的方法和装置
公开(公告)号：US4685044A
公开(公告)日：1987-08-04
申请号：US763466
申请日：1985-08-07
申请人： Manfred Weibelzahl , Georg Wild , Kadry Sadek
发明人： Manfred Weibelzahl , Georg Wild , Kadry Sadek
IPC分类号： H02M1/12 , H02M7/757 , H02H7/00
CPC分类号： H02M7/7575 , H02M1/12 , Y02E60/60
摘要： If in a high-voltage d-c transmission system (HVDCTS), a resonance frequency of an a-c voltage network (NB) connected to the inverter (1B) is located in the vicinity of a voltage component contained in the a-c voltage network, a resonance frequency which often cannot be compensated by a current regulator controlling the rectifier stage (1A) is coupled into the d-c circuit of the HVDCTS via the inverter. Therefore, resonance phenomena which requires an emergency shutdown of the HVDCTS are generated. Therefore, a pilot quantity (U'.sub.d) is formed with a defined phase shift relative to the resonance oscillation of the HVDCTS voltage and added to the output of the current regulator. Thereby, a constant HVDCTS current can be generated for a given operating point and the resonance in the a-c voltage network (NB) can be damped. If the resonance oscillation is determined by two quantities (U'.sub.d, i'.sub.d) of, respectively, the HVDCTS voltage as well as of the HVDCTS current, stable damping of the resonance phenomena can be achieved by the pilot control described with the two quantities even for deviating operating points.
摘要翻译：如果在高压直流输电系统（HVDCTS）中，连接到逆变器（1B）的交流电压网络（NB）的谐振频率位于交流电压网络中包含的电压分量附近，则共振频率其通常不能通过控制整流器级（1A）的电流调节器经由逆变器耦合到HVDCTS的直流电路来补偿。因此，产生需要紧急关闭HVDCTS的共振现象。因此，导频量（U'd）相对于HVDCTS电压的谐振振荡形成具有规定的相移并被加到电流调节器的输出端。因此，对于给定的工作点可以产生恒定的HVDCTS电流，并且a-c电压网络（NB）中的谐振可被衰减。如果共振振荡分别由HVDCTS电压和HVDCTS电流的两个量（U'd，i）确定，那么谐振现象的稳定阻尼可以通过两个描述的导频控制来实现数量甚至偏离工作点。

17. 发明授权

US4622474A Alternating-current filter circuit arrangement 失效
标题翻译：交流滤波电路装置
公开(公告)号：US4622474A
公开(公告)日：1986-11-11
申请号：US658991
申请日：1984-10-10
申请人： Norbert Christl , Kadry Sadek
发明人： Norbert Christl , Kadry Sadek
IPC分类号： H02J3/01 , H02J3/18 , H02M1/12 , H02J1/02
CPC分类号： H02M1/12 , H02J3/01 , H02J3/1821 , Y02E40/30 , Y02E40/40
摘要： In this three-phase filter circuit system for static converter systems and particularly high-voltage direct-current short ties, at least two high-pass filters are provided which are connected in parallel. Each high-pass filter consists of a choke connected in parallel with a resistance and, in series with both, a capacitor and can be individually connected to the three-phase busbar via a switch. The filter circuits are used not only for reducing harmonics but also as compensating devices, which can be switched in steps, for the reactive power requirement of the static converters so that in the lower partial load range of the system one of the filter circuits is disconnected for reasons of reactive power balance. In order to improve the filtering effect in this lower partial load range, a bus-coupler switch connecting in each case the common junctions of capacitor, resistance and choke of the high-pass filters is closed. When the switch is closed, this widens the band width of the filter circuit which is in operation and increases the resonance frequency, and individual distortions, the total distortion and telephone interference factors on the busbar are reduced.
摘要翻译：在用于静态转换器系统和特别是高压直流短接头的三相滤波器电路系统中，提供并联连接的至少两个高通滤波器。每个高通滤波器由与电阻并联连接的扼流圈组成，并与两个电容串联，并可通过开关单独连接到三相母线。滤波器电路不仅用于减少谐波，而且还用作可以逐步切换的补偿装置，用于静态转换器的无功功率需求，使得在系统的较低部分负载范围内，一个滤波器电路断开由于无功功率平衡的原因。为了提高这种较低部分负载范围内的滤波效果，在每种情况下，连接高压滤波器的电容器，电阻和扼流圈的公共接点的总线耦合器开关闭合。当开关闭合时，会加大正在运行的滤波电路的带宽，增加谐振频率，减少母线上的总失真和电话干扰因素。

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