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101. 发明授权

US5084812A Arrangement for converting two single-phase alternating currents into a symmetric three-phase current 失效
标题翻译：将两相单相电流转换为相对三相电流的布置
公开(公告)号：US5084812A
公开(公告)日：1992-01-28
申请号：US598213
申请日：1990-10-16
申请人： Michael Hausler , Josef Kauferle
发明人： Michael Hausler , Josef Kauferle
IPC分类号： H02J3/26 , H02J3/38 , H02M5/443 , H02M5/45
CPC分类号： H02M5/45 , Y10T307/658
摘要： In order with a low degree of equipment complexity to convert two alternating-currents of 16 2/3 Hz of two separate single-phase generators (G1, G2) of approximately the same power into a three-phase current with 50 Hz, the single-phase generators are connected via a SCOTT transformer (Tr1) to a rectifier (SR1) of a converter with a direct-voltage intermediate circuit (3-6). The direct current transmitted through the direct-voltage intermediate circuit is transformed into three-phase current by two inverters (SR2, SR3) connected in series, and supplied to a national power system (10) via power transformers (Tr2, Tr3). The two single-phase generators (G1, G2) are controlled by one generator voltage controller (42) in each case, which affects the excitation of the single-phase generators (G1, G2) via a field rectifier (43), at the same amplitude of their generator voltages (u1, u2). Moreover, the single-phase generators (G1, G2) are controlled at a phase shift of their generator voltages (u1, u2 ) of 90.degree..sub.el by a load angle controller as a function of the load angles (.delta.1, .delta.2). For this purpose, desired-value signals (P1.sub.s, P2.sub.s) are formed by a turbine balance controller in order to control the fuel supply of turbines (Tu1, Tu2), which drive the single-phase generators (G1, G2).
摘要翻译：为了将两个具有大致相同功率的两个单独的单相发生器（G1，G2）的16 2/3 Hz的两个交流电转换成具有50Hz的三相电流，低的设备复杂度，单个相位发生器通过SCOTT变压器（Tr1）连接到具有直流电压中间电路（3-6）的转换器的整流器（SR1）。通过直流电压中间电路传输的直流电流通过串联连接的两台逆变器（SR2，SR3）转换为三相电流，并通过电力变压器（Tr2，Tr3）提供给国家电力系统（10）。在这种情况下，两个单相发生器（G1，G2）由一个发电机电压控制器（42）控制，这通过场整流器（43）影响单相发生器（G1，G2）的激励，它们的发电机电压（u1，u2）的幅度相同。此外，单相发生器（G1，G2）通过负载角控制器作为负载角（δ1，δ2）的函数被控制在90°的发电机电压（u1，u2）的相移，。为此，为了控制驱动单相发电机（G1，G2）的涡轮机（Tu1，Tu2）的燃料供给，由涡轮平衡控制器形成期望值信号（P1s，P2s）。

102. 发明授权

US5057989A PWM controlled DC/AC power converter 失效
标题翻译： PWM控制的直流/交流电源转换器
公开(公告)号：US5057989A
公开(公告)日：1991-10-15
申请号：US575613
申请日：1990-08-31
申请人： Syun-ichi Hirose , Toshiaki Kudor , Takeichi Kawakami
发明人： Syun-ichi Hirose , Toshiaki Kudor , Takeichi Kawakami
IPC分类号： H02M7/757 , H02J3/26 , H02J3/36 , H02J5/00 , H02M7/527
CPC分类号： H02M7/527
摘要： In an apparatus for controlling a power converter, which is adapted to control, in accordance with a PWM system, a voltage-type inverter for system interconnection interposed between a d.c. power source and an a.c. system to interchange power therebetween, a scheme is employed to switch voltage amplitude adjustment signals of respective phases depending upon an output voltage phase signal provide a phase voltage amplitude. Energization periods of respective controllable rectifier elements of the power converter are determined on the basis of the phase voltage amplitude and the output voltage phase signal. Employment of such a scheme makes it possible to independently control the output voltage of the inverter every phase or with respect to both positive and negative sides of the phases, respectively.

103. 发明授权

US4893069A Ferroresonant three-phase constant AC voltage transformer arrangement with compensation for unbalanced loads 失效
标题翻译：铁电谐振三相恒定交流电压互感器布置，补偿不平衡负载
公开(公告)号：US4893069A
公开(公告)日：1990-01-09
申请号：US358476
申请日：1989-05-30
申请人： Kosuke Harada , Akihiko Katsuki , Fukutoshi Tominaga
发明人： Kosuke Harada , Akihiko Katsuki , Fukutoshi Tominaga
IPC分类号： H01F38/02 , G05F1/13 , G05F3/06 , H01F30/12 , H01F37/00 , H02J3/26
CPC分类号： G05F3/06 , G05F1/13 , Y10T307/273
摘要： A ferroresonant three-phase constant AC voltage transformer comprising three transformer iron cores with one for each corresponding input supply phase, primary windings and secondary windings formed on each of the transformer iron cores, series reactance components or reactors connected in series, with the primary windings, automatic voltage regulating means for controlling secondary output voltages generated at the secondary windings to a predetermined target value, compensating windings formed so as to be inductively coupled to each of the series reactance components or reactors, and means for connecting the compensating windings in series with each other to form a closed loop circuit. The secondary output voltages are theoretically kept in balanced condition even when the loads or the primary input voltages or both are unbalanced.
摘要翻译：一个铁电谐振三相恒压交流电压互感器，包括三个变压器铁芯，每个相应的输入电源相一个，初级绕组和次级绕组形成在每个变压器铁芯上，串联电抗分量或串联的电抗器与初级绕组用于将在次级绕组产生的次级输出电压控制到预定目标值的自动电压调节装置，形成为感应耦合到每个串联电抗部件或电抗器的补偿绕组，以及用于将补偿绕组与彼此形成闭环电路。即使当负载或主要输入电压或二者都不平衡时，二次输出电压在理论上也保持在平衡状态。

104. 发明授权

US4665322A Uninterruptible polyphase AC power supply 失效
标题翻译：不间断多相交流电源
公开(公告)号：US4665322A
公开(公告)日：1987-05-12
申请号：US792498
申请日：1985-10-29
申请人： Yoshinori Eishima , Yasuhiro Kawata
发明人： Yoshinori Eishima , Yasuhiro Kawata
IPC分类号： H02M7/48 , G05F1/00 , H02J3/26 , H02J9/06 , H02M1/084 , H02M7/493 , H02M7/42 , H02J9/00
CPC分类号： H02M1/084 , H02J9/062 , Y10T307/625
摘要： An uninterruptible polyphase AC power supply equalizes an electric power taken out from a polyphase AC power source, even if unbalanced load is connected to output. The uninterruptible AC power supply comprizes a polyphase balanced phase shifter generating one control signal in synchronous with one phase of the AC power source and other control signals each having a prescribed phase difference with respect to said former control signal, a phase comparator comparing phases of said respective control signals with those of output voltage of the uninterruptible AC power supply to output correction signals whch minimize the phase difference between them, a plurality of phase shifters for signal phase to which are respectively supplied said control signals as well as said correction signal in the corresponding phases to generate invertor control signals in the corresponding phases, and a means for supplying the invertor control signals being the outputs of said respective phase shifters for single phase to the invertors in the corresponding phases.
摘要翻译：即使不平衡负载连接到输出端，不间断多相交流电源也能够均衡从多相交流电源取出的电力。不间断交流电源组合多相平衡移相器，产生与AC电源的一相同步的一个控制信号，以及相对于所述前一个控制信号具有规定相位差的其它控制信号，相位比较器比较所述各个控制信号与不间断AC电源的输出电压的控制信号输出校正信号，使它们之间的相位差最小化，用于信号相位的多个移相器分别被提供给所述控制信号以及所述校正信号在相应的相位产生反相器控制信号的相应相位，以及用于将用于单相的所述各个移相器的输出的反相器控制信号提供给相应相位中的反相器的装置。

105. 发明授权

US4352026A Multi-phase current balancing compensator 失效
标题翻译：多相电流平衡补偿器
公开(公告)号：US4352026A
公开(公告)日：1982-09-28
申请号：US919225
申请日：1978-06-26
申请人： Donald W. Owen
发明人： Donald W. Owen
IPC分类号： H02J3/26
CPC分类号： H02J3/26 , Y02E40/50 , Y10T307/273
摘要： An apparatus which automatically balances the magnitudes of each phase current in a multi-phase power system includes electrical conductors, or phase lines, variable reactance evices, and control elements. Each phase line connects to a variable reactance device which can change the reactance of the line to thereby control the magnitude of the phase current. The variation of the reactance in one line is controlled by a control element which supplies the reactance device with a direct current converted from the alternating current of another phase line. This direct current generates a magnetic field which saturates the reactance device and thereby balances the controlled phase's current by interacting with the magnetic fields generated in the reactance device by that phase's alternating current. Total balancing is obtained by concatenating the control elements to reactance devices of all phases, i.e., one phase controls a second phase, the second controls a third, . . ., the n.sup.th -1 controls the n.sup.th, and the n.sup.th phase controls the first phase.
摘要翻译：在多相电力系统中自动平衡各相电流的大小的装置包括电导体或相线，可变电抗设备和控制元件。每相线路连接到可变电抗装置，其可以改变线路的电抗，从而控制相电流的大小。一行中电抗的变化由一个控制元件控制，该控制元件为电抗装置提供从另一相线的交流电转换的直流电流。该直流产生使电抗装置饱和的磁场，从而通过与电抗装置中产生的磁场相互作用来平衡受控相的电流。通过将控制元件连接到所有相的电抗装置，即一相控制第二相，第二控制第三相获得总平衡。。，第n-1控制第n，第n阶段控制第一阶段。

106. 发明授权

US4199798A Phase balance monitoring system incorporating voltage and phase sequence monitoring 失效
标题翻译：相位平衡监控系统，包括电压和相序监控
公开(公告)号：US4199798A
公开(公告)日：1980-04-22
申请号：US886299
申请日：1978-03-13
申请人： Elton D. Leppke , Russell P. Schuchmann
发明人： Elton D. Leppke , Russell P. Schuchmann
IPC分类号： H02H3/34 , H02H1/06 , H02H3/253 , H02H3/353 , H02H3/52 , H02H11/00 , H02J3/26 , H02H3/26
CPC分类号： H02H11/004 , H02H3/253 , H02H3/353 , H02H3/52 , H02H1/06
摘要： A phase unbalance detecting system that includes also low-voltage detection and wrong-phase-sequence detection. The system can be packaged in a small volume because it is a solid state type that uses a minimum of electronics and does not require transformers for obtaining signals from the several phases of the plural-phase power line but only one transformer for the D.C. power supply circuit for the detection system. The system incorporates means for allowing it to be used at 50 or 60 Hz without separate adjustment, for making it insensitive to noise and harmonics of the power line, and for providing a good estimate of the negative sequence voltage caused by a phase unbalance. It provides external terminals whereby it can be adapted for use at different power line voltages.
摘要翻译：相位不平衡检测系统还包括低电压检测和错相序检测。该系统可以被封装成小体积，因为它是使用最少电子装置的固态，并且不需要变压器来获得来自多相电力线的多个相的信号，而只有一个用于直流电源的变压器检测系统电路。该系统包括允许其在50或60Hz下使用而不进行单独调整的装置，以使其对电力线的噪声和谐波不敏感，并且用于提供由相位不平衡引起的负序电压的良好估计。它提供外部端子，由此可以适应于在不同的电源线电压下使用。

107. 发明授权

US4174497A Circuit and method for controlling reactive load currents of a three-phase system 失效
标题翻译：用于控制三相系统的无功负载电流的电路和方法
公开(公告)号：US4174497A
公开(公告)日：1979-11-13
申请号：US839038
申请日：1977-10-03
申请人： Manfred Depenbrock
发明人： Manfred Depenbrock
IPC分类号： G05F1/70 , H02J3/18 , H02J3/26 , H02M7/00
CPC分类号： H02J3/1842 , H02M7/00 , Y02E40/22
摘要： Circuit for controlling reactive currents of a three-phase network, having three converters with forced commutation connected in parallel with the loads of the three-phase network, at least one energy accumulator connected to the d-c side of the converter, and a closed control loop having measuring transformers for input currents of the converter, for the load currents and for the conductor voltages of the network, means for evaluating required compensation currents and means for controlling firing pulse formers for the converters to adjust the waveform of the currents on the three-phase side, including capacitors shunted across the loads in three phases, the compensation control element being a three-phase four-quadrant control element, the energy accumulator being an additional capacitor and a resonant circuit tuned to twice the network frequency, the resonant circuit being connected in parallel to the additional capacitor, the control loop including means for controlling the mean voltage on the d-c side of the four-quadrant control device, a conductance measuring converter connected to the measuring transformers for the load currents and an active-current reference-value generator connected to the conductance measuring converter.
摘要翻译：用于控制三相网络的无功电流的电路，具有三个转换器，其中强制换向器与三相网络的负载并联连接，连接到转换器的直流侧的至少一个能量蓄能器以及闭合的控制回路具有用于转换器的输入电流的测量变压器，用于负载电流和网络的导体电压，用于评估所需补偿电流的装置和用于控制转换器的点火脉冲形成器的装置，以调节三相电流上的电流波形，包括在三相中分流在负载上的电容器，补偿控制元件是三相四象限控制元件，该蓄能器是额外的电容器，并且谐振电路被调谐到网络频率的两倍，谐振电路是与附加电容器并联连接，控制回路包括用于控制平均值vo的装置在四象限控制装置的d-c侧的电压测量转换器，连接到用于负载电流的测量变压器的电导测量转换器和连接到电导测量转换器的有功电流基准值发生器。

108. 发明授权

US3566245A Three phase regulated d.c. power supply with control for balancing input phase current 失效
标题翻译：具有控制平衡输入相电流的三相调节直流电源
公开(公告)号：US3566245A
公开(公告)日：1971-02-23
申请号：US3566245D
申请日：1969-01-21
申请人： HEWLETT PACKARD CO
发明人： BLOKKER JOHAN F , BLAND ROBERT J
IPC分类号： G05F1/10 , G05F1/445 , G05F1/455 , H02J3/26 , H02M1/08 , H02M7/12
CPC分类号： H02M1/081 , G05F1/445 , G05F1/455 , H02J3/26 , Y02E40/50
摘要： A POWER SUPPLY SYSTEM HAS A REGULATED D.C. OUTPUT AND A THREE PHASE A.C. INPUT. INPUT CURRENT IN EACH PHASE IS CONTROLLED BY A SILICON CONTROLLED RECTIFIER (SCR). THREE BLOCKING OSCILLATORS PRODUCE OUTPUT PULSES FOR FIRING THE SCAR''S AT PHASE ANGLES DETERMINED IN RESPONSE TO THE D.C. OUTPUT VOLTAGE AND CURRENT. ADDITIONALLY THE FIRING ANGLES FOR TWO OF THE THREE SCR''S ARE AUTOMATICALLY ADJUSTED TO BALANCE CURRENT AMONG THE THREE PHASES AT THE INPUT. THIS IS ACHIEVED BY CIRCUITRY WHICH SENSES AND COMPARES THE POSITIVE AND NEGATIVE INPUT CURRENT IN TWO OF THE PHASES AND PRODUCES DIFFERENCE SIGNALS WHICH DRIVE TWO FO THE BLOCKING OSCILLATORS TO ADJUST THE FIRING ANGLES OF TWO OF THE SCR''S UNTIL PHASE CURRENT IS EQUALIZED.

109. 发明授权

US3344311A Compensating control circuit 失效
标题翻译：补偿控制电路
公开(公告)号：US3344311A
公开(公告)日：1967-09-26
申请号：US45835365
申请日：1965-05-24
申请人： GEN ELECTRIC
发明人： NUCKOLLS JOE A
IPC分类号： G05F1/44 , G05F1/445 , G05F1/455 , H02J3/26 , H05B41/392
CPC分类号： H05B41/3924 , G05F1/445 , G05F1/455 , Y10S315/04 , Y10S315/05

110. 发明授权

US3265958A Balancing a polyphase circuit with a single phase load 失效
标题翻译：平衡具有单相负载的多相电路
公开(公告)号：US3265958A
公开(公告)日：1966-08-09
申请号：US29704363
申请日：1963-07-23
申请人： ALLG ELEK CITATES GES , DEUTSCHE EDELSTAHLWERKE AG
发明人： WALTER SEULEN GERHARD
IPC分类号： H01F30/14 , H02J3/18 , H02J3/26
CPC分类号： H02J3/1828 , H01F30/14 , H02J3/26 , Y02E40/30 , Y02E40/50 , Y10T307/273

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