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51. 发明授权

US5345360A Switched receptacle circuit 失效
标题翻译：开关插座电路
公开(公告)号：US5345360A
公开(公告)日：1994-09-06
申请号：US914964
申请日：1992-07-16
申请人： Burke J. Crane
发明人： Burke J. Crane
IPC分类号： H02J13/00 , H01H47/22 , H02J3/06 , H02J3/26 , H01H47/04
CPC分类号： H02J3/26 , H01H47/226 , Y02E40/50
摘要： A switched receptacle includes a latching relay selectively providing power to an outlet receptacle. The latching relay is controlled to insure that a flux density in the set mode is no greater than that which is needed to actuate the latching relay while allowing the latch to remain in the actuated position even if this power is terminated. Current limiting is provided for resetting so that zero flux density results when unlatching.
摘要翻译：开关插座包括选择性地向出口插座提供电力的闭锁继电器。锁定继电器被控制以确保在设定模式下的通量密度不大于致动闭锁继电器所需的磁通密度，同时允许闩锁保持在致动位置，即使该功率被终止。提供电流限制用于复位，以便在解锁时产生零通量密度。

52. 发明授权

US5281859A Automatically switched power receptacle 失效
标题翻译：自动切换电源插座
公开(公告)号：US5281859A
公开(公告)日：1994-01-25
申请号：US837845
申请日：1992-02-18
申请人： Burke J. Crane
发明人： Burke J. Crane
IPC分类号： H02J13/00 , H01H47/22 , H02J3/06 , H02J3/26 , H01H33/54
CPC分类号： H02J3/26 , H01H47/226 , Y02E40/50 , Y10T307/461 , Y10T307/826 , Y10T307/937
摘要： A switched power circuit selectively connects an electrical load to any one of a plurality of branch power circuits. The switched power circuit includes a sensing circuit for sensing electrical loading on each of the branch circuits. A logic circuit is coupled to the sensing circuit for selecting one of the branch circuits to be connected to the load according to the sensed loading to provide balanced loading on each branch circuit.
摘要翻译：开关电源电路选择性地将电负载连接到多个分支电力电路中的任何一个。开关电源电路包括用于检测每个分支电路上的电负载的感测电路。逻辑电路耦合到感测电路，用于根据感测的负载选择要连接到负载的分支电路中的一个，以在每个分支电路上提供平衡负载。

53. 发明授权

US5148362A Method and device for balancing a three-phase system 失效
标题翻译：用于平衡三相系统的方法和装置
公开(公告)号：US5148362A
公开(公告)日：1992-09-15
申请号：US742293
申请日：1991-08-08
申请人： Rudiger Braun , Wilhelm Forstbauer
发明人： Rudiger Braun , Wilhelm Forstbauer
IPC分类号： H02J3/26 , H02M7/525
CPC分类号： H02J3/26 , H02M7/525 , Y02E40/50
摘要： A method and a device balance a three-phase system (18) formed by means of an invertor (12) from a dc voltage source (10), the output (R', S', T') of said invertor (12) being provided with a filter (14) followed by a neutral grounding transformer (16). Positive and negative phase-sequence system components (u.sub.1s, u .sub.1c, u.sub.2c, u.sub.2s) are formed from the measured voltages (u.sub.R, u.sub.S, u.sub.T). These measured voltages (u.sub.R, u.sub.S, u.sub.T) form positive and negative phase-sequence system manipulated variables (U.sub.St.phi., U.sub.St1c, U.sub.St2c, U.sub.St2s). The positive and negative phase-sequence system manipulated variables (U.sub.St1c, U.sub.St2s, U.sub.St2c) are transformed by means of a transformation device (50) into phase-to-neutral voltage manipulated variable (U.sub.Str, U.sub.Sts, U.sub.Stt) and routed to angularly symmetrical drive units 76, 78, 80). A three-phase system (18) formed can thus be kept balanced, with means of the multivariable control systems, even with an unbalanced load.
摘要翻译：一种方法和装置平衡通过来自直流电压源（10）的反相器（12）形成的三相系统（18），所述逆变器（12）的输出（R'，S'，T'），设置有过滤器（14），随后是中性接地变压器（16）。根据测量电压（uR，uS，uT）形成正和负相序系统组件（＆upbar＆u1s，＆upbar＆u 1c，＆upbar＆u2c，＆upbar＆u2s）。这些测量电压（uR，uS，uT）形成正和负相序系统操纵变量（USt phi，USt1c，USt2c，USt2s）。通过变换装置（50）将正和负相序系统操纵变量（USt1c，USt2s，USt2c）变换为相到中性电压操纵变量（UStr，USts，UStt），并被路由到角对称驱动单位76,78,80）。因此，形成的三相系统（18）可以通过多变量控制系统的方式保持平衡，即使是负载不平衡。

54. 发明授权

US5107410A Multi-phase and shifted phase power distribution systems 失效
标题翻译：多相和相移配电系统
公开(公告)号：US5107410A
公开(公告)日：1992-04-21
申请号：US722935
申请日：1991-06-28
申请人： John K. Marsh , Russell E. Zemen, Jr.
发明人： John K. Marsh , Russell E. Zemen, Jr.
IPC分类号： H02J3/26 , H02M5/14
CPC分类号： H02J3/26 , H02M5/14 , Y02E40/50
摘要： A method and apparatus for providing a source of alternating current electrical power to a plurality of loads in an office environment, including a plurality of non-linear loads which draw power for only a portion of the alternating current cycle, includes an input source of three-phase electrical power to a primary side of a power transforming device which provides an output at its secondary side which comprises at least six phases and a shared neutral. The plurality of loads are evenly distributed between each phase of the output power source and the shared neutral so as to reduce by current cancellation the current which would otherwise flow in the shared neutral conductor due to the presence of the non-linear loads. Each of the six phases is separated from the other by 120 electrical degrees, and the fourth, fifth and sixth phases are separated from the first, second and third phases, respectively, by 180 electrical degrees. In a preferred embodiment, two sets of six phases are provided, with each of the phases in the first set shifted, relative to respective phases of the second set, so as to reduce variations in the level of instantaneous power drawn from the input source which would otherwise occur due to the presence of the non-linear loads. Benefits of the invention include lower ground to neutral noise, reduced transmission losses, more accurate power measurement by induction watt-hour meters, and fewer instances of neutral current overload.
摘要翻译：一种用于向办公室环境中的多个负载提供交流电功率源的方法和装置，包括仅为交流循环的一部分提取功率的多个非线性负载，包括三个输入源电力转换装置的初级侧的相电力，其在其次级侧提供输出，其包括至少六个相位和共享中立点。多个负载均匀地分布在输出电源和共享中性点的每个相位之间，以便通过由于存在非线性负载而在共享中性导体中流动的电流的电流消除来减小。六相中的每一个与另一相分离120度，第四相，第五相和第六相分别与第一相，第二相和第三相分开180度电度。在优选实施例中，提供两组六相，其中第一组中的每个相位相对于第二组的各个相位移位，以便减小从输入源抽取的瞬时功率电平的变化，否则将由于存在非线性负载而发生。本发明的优点包括降低地面到中性噪声，降低传输损耗，通过感应功率表进行更精确的功率测量，以及更少的中性线电流过载实例。

55. 发明授权

US4398232A Protective relaying methods and apparatus 失效
标题翻译：保护继电方式及装置
公开(公告)号：US4398232A
公开(公告)日：1983-08-09
申请号：US321158
申请日：1981-11-13
申请人： Walter A. Elmore
发明人： Walter A. Elmore
IPC分类号： H02H3/34 , G01R27/18 , G01R29/16 , G01R31/02 , H02H3/38 , H02H3/40 , H02J3/26 , H02H3/16
CPC分类号： G01R31/025 , G01R27/18 , G01R29/16 , H02H3/385 , H02H3/40 , H02J3/26 , Y02E40/50
摘要： Methods and apparatus for detecting a single-phase-to-ground fault on a three-phase electrical power system, and for identifying a faulted phase. A single-phase-to-ground fault is correctly distinguished from other faults, including phase-to-phase-to-ground faults, even with transmission lines which utilize series capacitors, by taking into consideration the phase-to-phase voltage which is in quadrature with the voltage to ground of the monitored phase.
摘要翻译：用于检测三相电力系统上的单相对地故障并用于识别故障相位的方法和装置。即使使用串联电容器的传输线，考虑到相间电压是相间电压，因此单相接地故障与其他故障正确区分，包括相间接地故障与被监测相位的电压正交。

56. 发明授权

US4004191A Method of reducing current unbalance in a three-phase power transmission line operating with one faulty phase 失效
标题翻译：在一个故障相位下运行的三相输电线路中减少电流不平衡的方法
公开(公告)号：US4004191A
公开(公告)日：1977-01-18
申请号：US573996
申请日：1975-05-02
申请人： Jury Fedorovich Koroljuk , Lidia Petrovna Scherbakova , Jury Andreevich Vakulenko , Vladimir Nikolaevich Matrosov , Viktor Demyanovich Rud , Timofei Vasilievich Chelyshev , Vyacheslav Viktorovich Shabashov , Vladislav Vasilievich Shubnikov , Vadim Lvovich Schedrikov
发明人： Jury Fedorovich Koroljuk , Lidia Petrovna Scherbakova , Jury Andreevich Vakulenko , Vladimir Nikolaevich Matrosov , Viktor Demyanovich Rud , Timofei Vasilievich Chelyshev , Vyacheslav Viktorovich Shabashov , Vladislav Vasilievich Shubnikov , Vadim Lvovich Schedrikov
IPC分类号： H02J3/26 , H02H7/22
CPC分类号： H02J3/26 , Y02E40/50
摘要： A method for reducing current unbalance in the electric system of a three-phase A.C. power transmission line operating in an incomplete phase regime using the wires of the line and transformers electrically coupled thereto. A disconnected wire of the line operating in the incomplete phase regime is grounded at one end thereof and a suitable alternating voltage source is connected at the other end thereof to increase the current flowing through the transformer neutrals, thus reducing current unbalance in the electric system. An embodiment of the invention provides for the use of a lightning protection wire rope instead of the wire in case the latter is broken.
摘要翻译：一种用于减少三相交流输电线路的电气系统中的电流不平衡的方法，该电力系统使用线路的电线和与其电耦合的变压器在不完全相位状态下工作。在不完全相位状态下工作的线的断开的线在其一端接地，另一端连接合适的交流电压源，以增加流经变压器中性线的电流，从而减少电气系统中的电流不平衡。本发明的一个实施例提供了在防止电线破损的情况下使用防雷钢绳而不是电线。

57. 发明授权

US3684956A Method of simulating the zero voltage increased by means of measured electrical quantities 失效
标题翻译：通过测量电量数值模拟零电压的方法
公开(公告)号：US3684956A
公开(公告)日：1972-08-15
申请号：US3684956D
申请日：1970-11-02
申请人： MESSERSCHMITT BOELKOW BLOHM
发明人： BARBACSY LUDWIG-BENNO , KOERV PETER , MEHNERT WALTER E
IPC分类号： G01R31/34 , G06G7/63 , H02J3/26 , G01N29/00 , H02M5/00
CPC分类号： G06G7/63 , G01R31/34 , H02J3/26 , Y02E40/50
摘要： Method of simulating the zero voltage increase at loads in three phase synchronous generators caused by load unsymmetry. The method utilizes terminal voltages measured at the synchronous generator and a zero current measured at the generator neutral and provides that an equivalent quantity Uo'' is similated by means of an open delta connection which accomplishes a vectorial addition of the three terminal voltages and Uo'' is converted into Uo by means of a transformer.

58. 发明授权

US3676766A Multiphase alternating current regulation system for transformer-coupled loads 失效
标题翻译：用于变压器耦合负载的多相替代电流调节系统
公开(公告)号：US3676766A
公开(公告)日：1972-07-11
申请号：US3676766D
申请日：1970-12-11
申请人： ROBICON CORP
发明人： BLACKMOND RONALD C
IPC分类号： H02J3/26 , H02M1/084 , G05F1/38 , G05F1/56
CPC分类号： H02J3/26 , H02M1/084 , Y02E40/50
摘要： In a multiphase alternating current regulating system employing controlled rectifiers operated in accordance with phase commutation techniques, the improvement of circuitry for eliminating direct current components across loads supplied by the three-phase system which would otherwise occur when the loads become unbalanced.
摘要翻译：在使用根据相位换向技术操作的受控整流器的多相交流调节系统中，用于消除由三相系统提供的负载上的直流分量的电路的改进，否则当负载变得不平衡时将会发生。

59. 发明授权

US3536991A Device for balancing a three-phase electrical network 失效
标题翻译：用于平衡三相电气网络的装置
公开(公告)号：US3536991A
公开(公告)日：1970-10-27
申请号：US3536991D
申请日：1967-09-22
申请人： ALEXANDR NIKOLAEVICH MILYAKH , ALEXANDR DMITRIEVICH MUZYCHENK , ANATOLY KORNEEVICH SHIDLOVSKY
发明人： MILYAKH ALEXANDR NIKOLAEVICH , MUZYCHENKO ALEXANDR DMITRIEVIC , SHIDLOVSKY ANATOLY KORNEEVICH
IPC分类号： H01F30/14 , H02J3/26 , G05F3/08
CPC分类号： H02J3/26 , H01F30/14 , H01F2029/143 , Y02E40/50 , Y10S323/91

60. 发明授权

US1658948A Phase-balancing system 失效
公开(公告)号：US1658948A
公开(公告)日：1928-02-14
申请号：US13896026
申请日：1926-10-01
申请人： WESTINGHOUSE ELECTRIC & MFG CO
发明人： JOSEPH SLEPIAN
IPC分类号： H02J3/26
CPC分类号： H02J3/26 , Y02E40/50 , Y10T307/273 , Y10T307/352

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