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    • 3. 发明授权
    • Twelve-pulse HVDC transmission
    • 十二脉冲HVDC传输
    • US07881078B2
    • 2011-02-01
    • US11908191
    • 2006-03-06
    • Marcos PereiraKadry Sadek
    • Marcos PereiraKadry Sadek
    • H02M5/45
    • H02J3/36H02M5/45H02P2201/13Y02E60/60
    • A device for transmitting electric power between alternating voltage networks includes converters interconnected by direct current lines and provided each with several six-pulse conversion bridges. The six-pulse conversion bridges of one same converter are capable of being connected to an alternating voltage network associated with the converters via inductances differently phase-shifted. A control unit is provided to energize the valves of the six-pulse conversion bridges. The device is more economical and the converters are interconnected by a plurality of direct current circuits, each direct current circuit being galvanically separated from at least an alternating voltage network.
    • 用于在交流电压网络之间传输电力的装置包括通过直流线互连的转换器,并且每个转换器提供有几个六脉冲转换桥。 一个相同转换器的六脉冲转换桥能够通过不同相位的电感连接到与转换器相关联的交流电压网络。 提供一个控制单元来激励六脉冲转换桥的阀。 该装置更经济,并且转换器通过多个直流电路互连,每个直流电路与至少一个交流电压网电流隔离。
    • 4. 发明申请
    • Twelve-pulse HVDC Transmission
    • 十二脉冲HVDC传输
    • US20090225570A1
    • 2009-09-10
    • US11908191
    • 2006-03-06
    • Marcos PereiraKadry Sadek
    • Marcos PereiraKadry Sadek
    • H02M5/45
    • H02J3/36H02M5/45H02P2201/13Y02E60/60
    • A device for transmitting electric power between alternating voltage networks includes converters interconnected by direct current lines and provided each with several six-pulse conversion bridges. The six-pulse conversion bridges of one same converter are capable of being connected to an alternating voltage network associated with the converters via inductances differently phase-shifted. A control unit is provided to energize the valves of the six-pulse conversion bridges. The device is more economical and the converters are interconnected by a plurality of direct current circuits, each direct current circuit being galvanically separated from at least an alternating voltage network.
    • 用于在交流电压网络之间传输电力的装置包括通过直流线互连的转换器,并且每个转换器提供有几个六脉冲转换桥。 一个相同转换器的六脉冲转换桥能够通过不同相位的电感连接到与转换器相关联的交流电压网络。 提供一个控制单元来激励六脉冲转换桥的阀。 该装置更经济,并且转换器通过多个直流电路互连,每个直流电路与至少一个交流电压网电流隔离。
    • 7. 发明申请
    • DEVICE FOR FLEXIBLE POWER TRANSMISSION AND DEICING OF A HIGH-VOLTAGE POWER LINE BY MEANS OF DIRECT CURRENT
    • 柔性电力传输装置和直流电流检测高压电力线
    • US20100033028A1
    • 2010-02-11
    • US12515027
    • 2007-11-14
    • Kadry SadekFrank SchettlerKarl Ücker
    • Kadry SadekFrank SchettlerKarl Ücker
    • H05K7/20H02M7/00
    • H02J3/36H02G7/16Y02E60/60
    • In order to provide an apparatus (1) for flexible power transmission and for deicing of a high-voltage line, which has a plurality of phases, by means of direct current, with an AC voltage connection of the high-voltage line which has a number of phases corresponding to the phases of the high-voltage line, each phase having at least one inductance (6) and a valve circuit (10) connected in series with each inductance (6), with the valve circuit (10) being connected by means of a junction point (11) to the AC voltage connection, and having a first current path (14) with a first power semiconductor valve (12) and a second current path (15) with a second power semiconductor valve (13), with the power semiconductor valves (12, 13) being connected in opposite senses with respect to one another with reference to the junction point (11) and in which case the first and the second current path (15) can be connected to a TCR star point by means of at least one star point switch (16, 17), whose design is simple and at the same time costs little, it is proposed that the TCR star point (18) is connected via a connecting line to a star point of a zero phase-sequence system suppression means (2, 21).
    • 为了提供一种用于通过直流电的柔性功率传输和具有多相的高电压线路的除冰装置(1),该高压线路具有高压线路的AC电压连接,该高压线路具有 与高压线的相位对应的相位数,每相具有与每个电感(6)串联连接的至少一个电感(6)和阀电路(10),阀电路(10)被连接 通过与AC电压连接的连接点(11),并且具有带有第二功率半导体阀(13)的具有第一功率半导体阀(12)和第二电流通路(15)的第一电流通路(14) 功率半导体阀(12,13)相对于连接点(11)相对于彼此以相反的方式连接,并且在这种情况下,第一和第二电流通路(15)可以连接到TCR 通过至少一个星点开关(16,17)的星点, 符号简单,同时成本很低,建议TCR星点(18)经由连接线连接到零相序系统抑制装置(2,21)的星点。
    • 8. 发明授权
    • Method and compensating device for compensating current oscillations
    • 用于补偿电流振荡的方法和补偿装置
    • US4639846A
    • 1987-01-27
    • US830721
    • 1986-02-19
    • Peter DahlerPeter NeidhartKadry SadekHerbert Stemmler
    • Peter DahlerPeter NeidhartKadry SadekHerbert Stemmler
    • H02M1/14H02J3/36H02M7/757H02J1/02
    • H02J3/36H02M7/7575H02J2003/365Y02E60/60
    • To reduce unwanted current oscillations such as, for example, of the second harmonic of the system frequency (f.sub.o), the firing angles (.alpha.1, .alpha.2) of a link-circuit rectifier (1) and of a link-circuit inverter (2) are compensatingly acted on in push-pull mode. For this purpose, a direct-current link-circuit current signal (S5, S5'), which contains the instability or the current oscillation to be compensated, is fed by means of a current detector (5, 5') to a bandpass filter (16, 16', 16") which is tuned to the frequency (f.sub.o, f.sub.x) of the respective current oscillation. The phase of a bandpass filter output signal (S16) is shifted by 90.degree. trailing in a 90.degree. phase-shifting section (15, 15', 15"). A compensating signal (S15,S15', S15") obtained in this manner is fed to first and second function generators (13, 13', 13"; 14, 14', 14"). The first function generators allow the positive component (S13) to pass and the second function generators allow the negative component (S14) of the compensating signal to pass. The output signal of the first function generator passes via a switch (12') to a summing section (11') for forming the cosine of the firing angle (.alpha.2) of the link-circuit inverter (2). The output signal of the second function generator passes via a switch (12) to a summing section (11) for forming the cosine of the firing angle (.alpha.1) of the link-circuit rectifier (1). By these means, the firing angle (.alpha.2) of the link-circuit inverter (2) is reduced when the direct-current link-circuit current signal is dropping and the firing angle (.alpha.1) of the link-circuit rectifier (1) is increased when it is rising.
    • 为了减少不必要的电流振荡,例如系统频率(fo)的二次谐波,链路电路整流器(1)和链路电路逆变器(1)的触发角(α1,α2) 2)在推挽模式下被补偿地作用。 为此,包含不稳定性或待补偿的当前振荡的直流链路电路信号(S5,S5')通过电流检测器(5,5')馈送到带通滤波器 (16,16',16“),其被调谐到各个电流振荡的频率(fo,fx)。 带通滤波器输出信号(S16)的相位在90°相移部分(15,15',15“)内移动90°。 以这种方式获得的补偿信号(S15,S15',S15“)被馈送到第一和第二功能发生器(13,13',13”; 14,14',14“)。 第一函数发生器允许正分量(S13)通过,第二函数发生器允许补偿信号的负分量(S14)通过。 第一函数发生器的输出信号通过开关(12')通过求和部分(11'),用于形成链路电路逆变器(2)的触发角(α2)的余弦。 第二函数发生器的输出信号通过开关(12)通过求和部分(11),以形成连接电路整流器(1)的触发角(α1)的余弦。 通过这些方式,当直流链路电路电流信号下降时,链路电路逆变器(2)的触发角(α2)减小,并且链路电路整流器(1)的触发角(α1) )在上升时增加。
    • 9. 发明授权
    • Device for flexible power transmission and deicing of a high-voltage power line by means of direct current
    • 用于通过直流电灵活地传输和除冰高压电力线的装置
    • US08264102B2
    • 2012-09-11
    • US12515027
    • 2007-11-14
    • Kadry SadekFrank SchettlerKarl Ücker
    • Kadry SadekFrank SchettlerKarl Ücker
    • H05K7/14
    • H02J3/36H02G7/16Y02E60/60
    • In order to provide an apparatus (1) for flexible power transmission and for deicing of a high-voltage line, which has a plurality of phases, by means of direct current, with an AC voltage connection of the high-voltage line which has a number of phases corresponding to the phases of the high-voltage line, each phase having at least one inductance (6) and a valve circuit (10) connected in series with each inductance (6), with the valve circuit (10) being connected by means of a junction point (11) to the AC voltage connection, and having a first current path (14) with a first power semiconductor valve (12) and a second current path (15) with a second power semiconductor valve (13), with the power semiconductor valves (12, 13) being connected in opposite senses with respect to one another with reference to the junction point (11) and in which case the first and the second current path (15) can be connected to a TCR star point by means of at least one star point switch (16, 17), whose design is simple and at the same time costs little, it is proposed that the TCR star point (18) is connected via a connecting line to a star point of a zero phase-sequence system suppression means (2, 21).
    • 为了提供一种用于通过直流电的柔性功率传输和具有多相的高电压线路的除冰装置(1),该高压线路具有高压线路的AC电压连接,该高压线路具有 与高压线的相位对应的相位数,每相具有与每个电感(6)串联连接的至少一个电感(6)和阀电路(10),阀电路(10)被连接 通过与AC电压连接的连接点(11),并且具有带有第二功率半导体阀(13)的具有第一功率半导体阀(12)和第二电流通路(15)的第一电流通路(14) 功率半导体阀(12,13)相对于连接点(11)相对于彼此以相反的方式连接,并且在这种情况下,第一和第二电流通路(15)可以连接到TCR 通过至少一个星点开关(16,17)的星点, 符号简单,同时成本很低,建议TCR星点(18)经由连接线连接到零相序系统抑制装置(2,21)的星点。
    • 10. 发明授权
    • Method for reducing dynamic overvoltages in an alternating-current
system to which a direct-current system is connected
    • 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
    • US4689733A
    • 1987-08-25
    • US878322
    • 1986-06-25
    • Gerhard GuthWalter KuhnGerhard LinhoferKadry Sadek
    • Gerhard GuthWalter KuhnGerhard LinhoferKadry Sadek
    • H02H7/122H02H7/26H02J1/00H02J3/36H02H7/00
    • H02J3/36H02H7/268Y02E60/60
    • 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.
    • 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。