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1.发明授权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
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。
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2.发明授权State signal formation for indicating the transition into the bypass mode of operation in an apparatus for high-voltage D-C transmission 失效用于指示在用于高电压D-C传输的装置中转换到旁路操作模式的状态信号形成
公开(公告)号：US4837671A
公开(公告)日：1989-06-06
申请号：US193511
申请日：1988-05-12
CPC分类号： H02J3/36 , H02H7/268 , H02M7/7575 , Y02E60/60
摘要： A state signal is formed to indicate a transition to a bypass mode of operation. In forming the signal of each winding system of a corresponding converter transformer on a side of the converter transformer are determined, weighted with weighting factors and summed up. The summation current formed in this manner does not have any null zones in the normal operation of the converter. All weighting factors are different if the phase currents between the converter and the converter transformer are used to produce the summation current. In the case of a converter transformer which is connected to the converter via a delta-connected winding system and in which the winding currents are used, certain differences formed by the weighting factors are not to be the same. A DC Hall converter with an insertion hole is particularly well suited for weighting and combining the currents of each individual winding system.
摘要翻译： 形成状态信号以指示向旁路操作模式的转换。 在转换变压器一侧形成相应变流器变压器的每个绕组系统的信号被确定，用加权因子加权并加总。 以这种方式形成的求和电流在转换器的正常工作中没有任何空区。 如果转换器和转换器变压器之间的相电流用于产生求和电流，所有加权因子都是不同的。 在通过三角形连接的绕组系统连接到转换器并且使用绕组电流的转换器变压器的情况下，由加权因子形成的某些差异将不相同。 具有插入孔的DC霍尔转换器特别适用于加权和组合每个单独绕组系统的电流。
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3.发明授权Method and apparatus for decoupling the active and reactive power control for a high voltage DC transmission line coupling two networks 失效用于耦合两个网络的高压直流输电线路的有功和无功功率控制的方法和装置
公开(公告)号：US4888674A
公开(公告)日：1989-12-19
申请号：US288282
申请日：1988-12-21
申请人： Manfred Weibelzahl , Georg Wild
发明人： Manfred Weibelzahl , Georg Wild
摘要： A high-voltage d-c transmission system in which one of the converters is operated as a rectifier and the other as an inverter. A first cascade control which sets the rectifier control angle includes a superimposed active power controller and a subordinated d-c controller. A second cascade control which sets the inverter control angle includes a superimposed voltage/active power controller, a superimposed quenching angle control and a subordinated quenching angle controller. The setting signal of each of the two superimposed controllers are controlled in dependence on the control deviation of the other one of the superimposed controllers via a first or second pilot control for decoupling the cascade controls. The gain factors of the pilot control quantities depend on the operating point in such a manner that a small engagement of the pilot control variable exists for small control angles and a large engagement exists for large control angles.
摘要翻译： 一种高压d-c传输系统，其中一个转换器作为整流器工作，另一个作为逆变器。 设置整流器控制角的第一级联控制包括叠加的有功功率控制器和从属d-c控制器。 设置逆变器控制角的第二级联控制包括叠加的电压/有功功率控制器，叠加的淬火角控制和从属淬火角控制器。 通过用于解耦级联控制的第一或第二导频控制，依赖于另一个叠加的控制器的控制偏差来控制两个叠加的控制器中的每一个的设置信号。 导频控制量的增益因子取决于操作点，使得对于小的控制角存在导频控制变量的小的接合，并且对于大的控制角度存在大的接合。
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4.发明授权Circuit arrangement with a number of cycloconverters, particularly direct cycloconverters in Y-connection 失效具有多个循环切换器的电路安装，Y连接中的特殊循环切换器
公开(公告)号：US4074348A
公开(公告)日：1978-02-14
申请号：US663131
申请日：1976-03-02
IPC分类号： H02M5/27
CPC分类号： H02M5/271
摘要： A circuit arrangement is disclosed comprising a converter for converting a three-phase system of sinusoidal voltages into three trapezoidal control voltages for controlling control units serving three direct cycloconverters. More particularly, in accord with the invention, the converter acts on the sinusoidal control voltages such that during each region from .pi./3 to 2.pi./3 of a half-wave of each particular voltage that voltage is reduced to .sqroot.3/2 times its peak value, while the other two voltages are amplified or increased by an amount equal to the difference between the aforesaid peak value and .sqroot.3/2 times such peak value.
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5.发明授权Method for the transmission of DC current between at least one rectifier station and several inverter stations 失效在至少一个整流站和多个逆变器站之间传输直流电流的方法
公开(公告)号：US4205368A
公开(公告)日：1980-05-27
申请号：US853883
申请日：1977-11-22
CPC分类号： H02M7/7575 , H02J3/36 , Y02E60/60
摘要： A method for the transmission of DC current via a DC network between at least one rectifier station and several inverter stations wherein reference inputs are formed on the basis of a fixed predetermined current-voltage characteristic and a fixed predetermined voltage-current characteristic matched to the aforesaid current-voltage characteristic for the voltage controller of the rectifier of the rectifier station and for the current controller of each inverter station, respectively. The formed reference input for each current controller is released to that current controller when the maximum value of the formed reference input exceeds a value determined for the reference input corresponding to the power demand associated with the inverter station which includes that current controller. When the maximum value of the formed reference input is less than the latter determined value, such value is released as the reference input to the current controller.
摘要翻译： 一种用于在至少一个整流站和多个逆变器站之间经由DC网络传输DC电流的方法，其中基于与上述匹配的固定的预定电流 - 电压特性和固定的预定电压 - 电流特性形成基准输入 整流站整流器电压控制器和各变频站电流控制器的电流 - 电压特性分别为 当所形成的参考输入的最大值超过对应于与包括该电流控制器的逆变器站相关联的功率需求的参考输入确定的值时，将每个电流控制器的形成的参考输入释放到该电流控制器。 当所形成的参考输入的最大值小于后一个确定值时，该值被释放作为当前控制器的参考输入。
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公开(公告)号：US4326230A
公开(公告)日：1982-04-20
申请号：US165809
申请日：1980-07-03
申请人： Michael Becker , Klaus Renz , Manfred Weibelzahl , Alfons Fendt , Dusan Povh , Gerhard Schuch , Hermann Waldmann
发明人： Michael Becker , Klaus Renz , Manfred Weibelzahl , Alfons Fendt , Dusan Povh , Gerhard Schuch , Hermann Waldmann
摘要： A circuit for monitoring the voltage stress of a capacitor which produces an over-stress indicator signal responsive to the over-voltage history of the capacitor. If the measured voltage stress of the capacitor exceeds a predetermined over-voltage value, a characteristic-curve generator, having a predetermined transfer function, produces an output signal which is responsive to the measured voltage stress of the capacitor and the transfer function of the characteristic-curve generator. This signal is combined with a further signal which is responsive to a predetermined permissible continuous operation voltage value. The combined signals are conducted to an integrator having a predetermined integration time constant for producing an overload signal. The overload signal at the output of the integrator is a measure of the state of stress of the capacitor. Circuitry may be provided for disconnecting the capacitor from a transmission line in response to the output signal of the integrator. Also, plural capacitor voltage stress monitoring stages may be combined to monitor the capacitor voltage stress in a plurality of over-voltage ranges.
摘要翻译： 用于监测电容器的电压应力的电路，其产生响应于电容器的过电压历史的过应力指示器信号。 如果电容器的测量电压应力超过预定的过电压值，则具有预定传递函数的特性曲线发生器产生响应于测量的电容器的电压和特性的传递函数的输出信号 曲线发生器。 该信号与响应于预定允许的连续工作电压值的另一信号组合。 组合的信号被传导到具有预定积分时间常数的积分器，以产生过载信号。 积分器输出端的过载信号是电容器应力状态的测量。 可以提供电路，用于响应于积分器的输出信号将电容器与传输线路断开。 此外，可以组合多个电容器电压应力监测级以监测多个过电压范围内的电容器电压应力。
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公开(公告)号：US4322766A
公开(公告)日：1982-03-30
申请号：US165754
申请日：1980-07-03
申请人： Michael Becker , Klaus Renz , Manfred Weibelzahl
发明人： Michael Becker , Klaus Renz , Manfred Weibelzahl
CPC分类号： G01R31/028 , H02H7/16
摘要： A circuit for monitoring the capacitor battery of a filter circuit connected to a transmission line, the capacitor battery consisting of at least two parallel legs, each with a number of series-connected capacitors. A first signal is produced which corresponds to the total alternating current flowing through the capacitor battery. A second signal is produced which corresponds to the difference between the currents flowing through the respective parallel legs of the capacitor battery. The current difference signal is compared with a respective fraction of the total current signal. A fault indicator signal is produced if the difference between the difference current signal and the fractional total current signal exceeds a predetermined threshold value. Further circuitry is provided for correcting drift in the difference current signal, which may be caused by temperature variations or acceptable capacitor failures. Automatic ranging circuitry may be provided in embodiments of the invention in which the total capacitor battery current varies in amplitude over a large range.
摘要翻译： 一种用于监测连接到传输线的滤波器电路的电容器电池的电路，所述电容器电池由至少两个并联支路组成，每个具有多个串联电容器。 产生对应于流过电容器电池的总交流电流的第一信号。 产生对应于流过电容器电池的各个平行支路的电流之间的差异的第二信号。 将电流差信号与总电流信号的相应部分进行比较。 如果差分电流信号和分数总电流信号之间的差超过预定阈值，则产生故障指示符信号。 提供了进一步的电路用于校正差分电流信号中的漂移，这可能由温度变化或可接受的电容器故障引起。 在本发明的实施例中，可以提供自动测距电路，其中总电容器电池电流的幅度在大范围内变化。
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8.发明授权Circuit having improved firing angle symmetry for ignition pulses in the control of a multipulse rectifier 失效电路对多脉冲整流器的控制中的点火脉冲具有改进的触发角对称性
公开(公告)号：US4309749A
公开(公告)日：1982-01-05
申请号：US145491
申请日：1980-05-01
CPC分类号： H02M1/084
摘要： Ignition control signals for a multipulse controlled rectifier are combined in a sequence which is fed through a first time delay stage to a phase control circuit having a voltage-controlled oscillator which generates a phase-locked, gated, highly accurate square-wave oscillation as a trigger pulse series. The ignition control signals and the trigger pulse series of the voltage-controlled oscillator are conjunctively coupled in and gates are then amplified to form firing (ignition) pulses. A second time delay stage is provided for safety, in the event of dynamic control processes, and follows the first time delay stage. The output signals of the second time delay stage are linked to the ignition control signals in additional and gates and are subsequently amplified. Should the phase control circuit be unable to follow the changes of the ignition control signals in the event of dynamic changes in the control processes, the ignition pulse formed after the response delay of the second time delay stage is utilized.
摘要翻译： 用于多脉冲可控整流器的点火控制信号以通过第一时间延迟级馈送到具有压控振荡器的相位控制电路的顺序组合，所述压控振荡器产生锁相，门控，高精度方波振荡，作为 触发脉冲串。 点火控制信号和压控振荡器的触发脉冲串联在一起，然后将门放大，形成点火（点火）脉冲。 为了安全起见，在动态控制过程的情况下提供第二时间延迟阶段，并且遵循第一时间延迟阶段。 第二时间延迟级的输出信号与额外的和门的点火控制信号相连，随后被放大。 在控制过程动态变化的情况下，如果相位控制电路不能跟随点火控制信号的变化，则利用在第二时间延迟阶段的响应延迟之后形成的点火脉冲。
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9.发明授权
公开(公告)号：US4008428A
公开(公告)日：1977-02-15
申请号：US647110
申请日：1976-01-07
CPC分类号： H02M5/271
摘要： A circuit arrangement is disclosed having an odd number of Y-connected frequency converters. The control units of the frequency converters are associated with current regulators, all of which are addressed by an additional common reference value. In accord with the invention, the aforesaid reference value is derived by generating a difference voltage corresponding to the difference of the voltages at the neutral point of the frequency converter circuit and the neutral point of the load. This difference voltage is then passed through a delay member whose time constant corresponds to the time constant of the load to develop the reference value.
摘要翻译： 公开了具有奇数个Y连接变频器的电路装置。 变频器的控制单元与电流调节器相关联，所有这些都通过额外的公共参考值来解决。 根据本发明，通过产生与变频器电路的中性点的电压差和负载的中性点相对应的差分电压来导出上述参考值。 然后，该差值电压通过延迟部件，时间常数对应于负载的时间常数以产生参考值。
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10.发明授权
公开(公告)号：US3942091A
公开(公告)日：1976-03-02
申请号：US501762
申请日：1974-08-29
申请人： Manfred Weibelzahl
发明人： Manfred Weibelzahl
CPC分类号： H02P27/02
摘要： An improved method and apparatus for operating a converter fed rotating field machine to obtain better utilization of the converter rectifiers in which the stator windings of the machine are fed with non-sinusoidal phase currents with one phase current always limited to a maximum value and the other phase currents increased by the difference between that maximum value and a typical sinusoidal wave current. This is accomplished in such a manner that the power and torque of the rotating field machine are not affected.
摘要翻译： 一种改进的用于操作转换器的旋转场机的方法和装置，以获得更好地利用转换器整流器，其中机器的定子绕组馈送有非正弦相电流，其中一个相电流总是被限制在最大值，另一个 相电流增加了该最大值和典型正弦波电流之间的差。 这是以不影响旋转磁场机的功率和扭矩的方式来实现的。
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