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公开(公告)号：US06181125B2
公开(公告)日：2001-01-30
申请号：US09424169
申请日：2000-01-27
Applicant: Shulin Li , Xujun Zhang
Inventor： Shulin Li , Xujun Zhang
IPC: H01F3300
Abstract: A combination apparatus of distribution transformer and switch includes a distribution transformer with three-phase and five-column, wherein the arrangement of the low-voltage winding in WYEo-form, the high voltage winding of each phase is connected in series with a high voltage fuse to constitute respectively one of the three high voltage phase arms, and the arrangement in high voltage side is DELTA form which is formed with one high voltage phase arm as one unit. The apparatus can be used in the system in which the neutral is not connected to the ground, or the neutral is connected to the ground through extinguishing-arc coil or through small resistance, and in the system in which the neutral is connected to the ground directly as well. It is possible that the fault phase does not disturb the normal operation of the other phases.
Abstract translation: 配电变压器和开关的组合装置包括具有三相和五列的配电变压器，其中以WYEo形式布置低压绕组，每相的高压绕组与高压串联 熔断器构成三个高压相臂中的一个，并且高压侧的布置为DELTA形式，其形成有一个高电压相位臂作为一个单元。 该装置可用于中性点不连接到地面的系统中，或者中性线通过灭弧线圈或小电阻连接到地面，而在中性线连接到地面的系统中 直接也是。 故障阶段可能不会干扰其他相的正常运行。
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公开(公告)号：US5982262A
公开(公告)日：1999-11-09
申请号：US986831
申请日：1997-12-08
Applicant: Michael I. Levin
Inventor： Michael I. Levin
Abstract: A phase shifting transformer or autotransformer for a three phase power distribution network in which selected outputs have a low zero phase sequence impedance. At least one low zero phase sequence impedance output is fed by a plurality of windings distributed amongst the three core legs such that the number of turns of windings generating a flux in the positive direction is substantially equal to the number of turns of windings generating a flux in the negative direction. Thus, according to the invention, the transformer may be provided with any necessary phase shifting angles between different harmonic sources, with some or all outputs having a low zero phase sequence impedance to reduce voltage distortion created by zero phase sequence harmonics.
Abstract translation: 用于三相配电网络的相移变压器或自耦变压器，其中选择的输出具有低零相序阻抗。 至少一个低零相序阻抗输出由分布在三个芯支脚之间的多个绕组馈送，使得在正方向上产生磁通的绕组匝数基本上等于产生磁通的绕组匝数 在负方向。 因此，根据本发明，变压器可以在不同谐波源之间提供任何必要的相移角，其中一些或全部输出具有低零相序阻抗，以减少由零相序谐波产生的电压失真。
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公开(公告)号：US5574418A
公开(公告)日：1996-11-12
申请号：US325940
申请日：1994-10-19
Applicant: Mitsuya Matsumura
Inventor： Mitsuya Matsumura
CPC classification number: H01F30/12
Abstract: A three-phase autotransformer improving balance of three-phase voltages and currents. An iron core has three legs corresponding to the three phase. A common winding and/or a serial winding of each phase includes three coils. Two of the three coils are wound on the same leg associated with the phase of the coils, and the other one coil is wound on another leg. The two coils and the other one coil are connected in series to generate magnetic flux in the opposite directions. Since the common winding and/or the series winding includes coils which are wound on different legs associated with different phases, and which generate flux in opposite directions, the balance of three-phase input voltages and currents, and output voltages and currents is automatically maintained.
Abstract translation: 三相自耦变压器改善三相电压和电流的平衡。 铁芯有三条腿对应三相。 每相的公共绕组和/或串联绕组包括三个线圈。 三个线圈中的两个缠绕在与线圈相位相同的腿上，另一个线圈缠绕在另一个腿上。 两个线圈和另一个线圈串联连接以产生相反方向的磁通量。 由于公共绕组和/或串联绕组包括缠绕在与不同相位相关的不同支路上并且在相反方向上产生磁通的线圈，所以自动维持三相输入电压和电流以及输出电压和电流的平衡 。
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公开(公告)号：US5317299A
公开(公告)日：1994-05-31
申请号：US725487
申请日：1991-07-03
Applicant: P. John Dhyanchand , Jayant Vaidya , Rajhunath Mokadam , Richard Arbanella
Inventor： P. John Dhyanchand , Jayant Vaidya , Rajhunath Mokadam , Richard Arbanella
CPC classification number: H01F30/12 , Y10T307/266 , Y10T307/289
Abstract: A summing transformer having a core structure, first primary and secondary windings wound on the core structure for establishing a rotating electromagnetic field when the first primary winding is energized, and second primary and secondary windings wound on the core structure for establishing a rotating electromagnetic field when the second primary winding is energized, and wherein the second first and second secondary windings are connected together so that voltages induced therein are added.
Abstract translation: 一种具有芯结构的加法变压器，缠绕在所述芯结构上的第一初级和次级绕组，用于当所述第一初级绕组通电时建立旋转电磁场，以及缠绕在所述芯结构上的第二初级和次级绕组以建立旋转电磁场， 所述第二初级绕组被通电，并且其中所述第二第一和第二次级绕组连接在一起，使得其中引入的电压被添加。
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公开(公告)号：US5202664A
公开(公告)日：1993-04-13
申请号：US826608
申请日：1992-01-28
Applicant: Peder U. Poulsen
Inventor： Peder U. Poulsen
CPC classification number: H01F27/324 , H01F30/12 , H01F41/022 , H01F2027/328
Abstract: A three phase transformer, e.g. a distribution transformer comprising three, substantially identical, frame shaped winding assemblies each containing primary and secondary windings which together form half legs having substantially semicircular cross section. The winding assemblies are placed together to form a triangular structure, so called temple configuration, wherein the half legs of adjacent winding assemblies combine into three legs having substantially circular cross section. A magnetic circuit is formed around each leg by winding a continuous strip of a ferromagnetic sheet material around the leg.
Abstract translation: 三相变压器，例如 配电变压器包括三个基本上相同的框架形绕组组件，每个绕组组件包含一起形成具有大致半圆形截面的半支腿的初级和次级绕组。 绕组组件放置在一起以形成三角形结构，即所谓的镜腿结构，其中相邻缠绕组件的半腿结合成具有基本圆形横截面的三个腿部。 通过将铁磁片材的连续条缠绕在腿上而围绕每条腿形成磁路。
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Patent Agency Ranking
公开(公告)号：US5003277A
公开(公告)日：1991-03-26
申请号：US390821
申请日：1989-08-08
Applicant: Katsuji Sokai , Koichi Ishii
Inventor： Katsuji Sokai , Koichi Ishii
IPC: H01F30/12
CPC classification number: H01F30/12
Abstract: A phase-shifting transformer including main and series transformer units comprises a six-phase core including six independent magnetic circuits, numbered first through sixth from right to left. The combined U-, V-, and W-phase windings of the main transformer unit link with the fifth, third, and first magnetic circuits, respectively. The combined a-, b-, and c-phase windings of the series transformer unit link with the sixth, fourth, and second magnetic circuits. The winding directions of the V- and b-phase windings are reversed with respect to those of other phase windings. Thus, if three-phase voltages 120 degrees apart are input to the main transformer unit, then the phase angles between the main magnetic fluxes generated in any two adjacent magnetic circuits are equal to 30 degrees. Consequently, the magnitudes of the differential magnetic fluxes passing through the interphase portions between two adjacent magnetic circuits are reduced to about one half of the magnitudes of the main magnetic fluxes, with the result that the cross-sectional area of the interphase portions of the core can be reduced to about one half of that of its main leg portions.
Abstract translation: 包括主变压器和串联变压器单元的移相变压器包括六相铁心，其包括六个独立的磁路，从右到左从第一到第六。 主变压器单元的组合U形，V形和W相绕组分别与第五，第三和第一磁路连接。 串联变压器单元的组合的a，b和c相绕组与第六，第四和第二磁路连接。 V相和B相绕组的绕组方向相对于其它相绕组的绕组方向反向。 因此，如果相对于主变压器单元120度输入三相电压，则在任意两个相邻的磁路中产生的主磁通之间的相位角等于30度。 因此，通过两个相邻磁路之间的相间部分的差动磁通量的大小减小到主磁通量的大约的一半，结果是磁芯的相间部分的横截面积 可以减少到其主要腿部的大约一半。
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公开(公告)号：US4975670A
公开(公告)日：1990-12-04
申请号：US354290
申请日：1989-05-18
Applicant: Alexander Krinickas, Jr.
Inventor： Alexander Krinickas, Jr.
CPC classification number: H01F30/12 , H01F27/303 , H02M5/42
Abstract: A variable speed, constant frequency generating system has a neutral forming autotransformer connected between a variable speed generator and an AC to AC converter. The converter includes a three phase, full wave rectifier with positive and negative rails connecting the rectifiers with a DC to AC inverter. Each turn of the transformer windings has at least one surface exposed to air for cooling.
Abstract translation: 变速恒定频发生系统具有连接在变速发电机和AC至AC转换器之间的中性成形自耦变压器。 该转换器包括一个三相全波整流器，其正极和负极导轨将整流器与直流到交流逆变器连接。 变压器绕组的每一圈具有至少一个暴露于空气的表面用于冷却。
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公开(公告)号：US4837497A
公开(公告)日：1989-06-06
申请号：US128958
申请日：1987-12-29
Applicant: Gregory Leibovich
Inventor： Gregory Leibovich
CPC classification number: G05F3/04 , H01F29/02 , H01F30/10 , H01F30/12 , H01F2029/143
Abstract: A variable transformer, reactor having a core combining at least two complete core elements wiht a common yoke; primary winding divided into two independently fed sets of phase coils wound in opposite direction, arranged on symmetrical legs of core elements and separated by the common yoke; secondary winding with each phase coil divided into two wound in opposite direction portions carried by symmetrical core legs, adjacent to the primary coils and separated by common yoke. The secondary short-circuited reactor winding is reduced to at least one close loop member with loop portions separated by the common yoke. The single, polyphase apparatus has at least one primary coil per set that includes a controllable device in circuit relation therewith to enable control of one primary coil relative to the other, either in current magntidue or in current phase shift. The controllable device being either a silicon control rectifier, triac or transistor. By continuous control of the controllable device an apparatus variable output parameters are obtained.
Abstract translation: 一种可变变压器，具有结合至少两个与公共轭的完整铁芯元件的芯的电抗器; 初级绕组分为两个相互缠绕的独立馈送的相绕组组，布置在芯元件的对称腿上并由公共轭分开; 每个相线圈的次级绕组被分成两个缠绕在相对方向部分上的相对方向的部分，所述相对方向部分由对称的铁芯支腿相邻，并与初级线圈相邻并由公共轭分开。 次级短路的电抗器绕组被减小到至少一个闭环部件，其中环部分由公共轭分开。 单相多相装置具有每组至少一个初级线圈，其包括与其电路关系的可控制器件，以使得能够以当前磁性或当前相移方式相对于另一个线圈控制一个初级线圈。 可控制器件是硅控制整流器，三端双向晶闸管或晶体管。 通过可控制装置的连续控制，获得装置可变输出参数。
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69.发明授权
公开(公告)号：US4507636A
公开(公告)日：1985-03-26
申请号：US582927
申请日：1984-02-23
Applicant: Odd J. Eilertsen , Ottar H. Svensen
Inventor： Odd J. Eilertsen , Ottar H. Svensen
CPC classification number: H01F27/367 , H01F30/12
Abstract: The present invention relates to a structure of neutral point of multiphase transformers for large secondary currents. Such multiple phase transformers, usually three phase transformers, are used for example for the operations of arc furnaces, and the secondary current of the transformer may amount to several thousand ampere. The neutral point is made as a plate (24) of material with good electric conductivity and is located within the transformer tank (27). Between the neutral point plate (24) and the tank wall (27) there is located a plate (25) of a material with good conductivity and serving as a screen for reducing losses in the tank wall (screen plate). The transformer is star connected on the secondary side. Each phase of the secondary winding consists of several windings connected in parallel, and the tappings are passed as parallel conductors onto the neutral point plate (24). The neutral point tappings (22) are connected to the neutral point plates (24), whereas the phase tappings are passed through openings both in the neutral point plate (24) and the screen plate (25) onto insulating ducts (26) in the tank wall (27).
Abstract translation: 本发明涉及用于大二次电流的多相变压器的中性点结构。 这种多相变压器，通常是三相变压器，例如用于电弧炉的操作，并且变压器的二次电流可以达数千安培。 中性点被制成具有良好导电性并且位于变压器箱（27）内的材料的板（24）。 在中性点板（24）和罐壁（27）之间，设有具有良好导电性的材料的板（25），并且用作用于减少罐壁（筛板）中的损失的筛网。 变压器在次级侧是星形连接的。 次级绕组的每相由并联连接的多个绕组组成，并且该插销作为平行导体通过中性点板（24）。 中性点抽头（22）连接到中性点板（24），而相位抽头通过中性点板（24）和筛板（25）中的开口穿过绝缘导管（26） 罐壁（27）。
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公开(公告)号：US4500829A
公开(公告)日：1985-02-19
申请号：US538391
申请日：1983-10-03
Applicant: Theodore R. Specht , Edward J. Cham
Inventor： Theodore R. Specht , Edward J. Cham
CPC classification number: H01F30/12
Abstract: A phase-shift transformer circuit providing advance or retard phase shift at any predetermined phase shift angle. The phase shift angle is determined by the ratio of the main and short windings of the transformer primary. Two links are used to provide advance or retard phase shift. One transformer winding is connected directly to a phase conductor of the three-phase power system. The remaining two transformer windings are connected to the remaining two phase conductors via the links. The links are movable such that in the advance configuration, the phase two conductor is connected to one of the transformer windings and the phase three conductor is connected to the other. In the retard phase-shift configuration, the links are moved so that the connections are reversed.
Abstract translation: 一种相移变压器电路，以任何预定的相位角提供或延迟相移。 相移角由变压器初级绕组的主绕组和短绕组的比率决定。 两个链路用于提供或延迟相移。 一个变压器绕组直接连接到三相电力系统的相导体。 剩余的两个变压器绕组通过链路连接到剩余的两个相导体。 链节是可移动的，使得在提前配置中，相位二导体连接到变压器绕组中的一个，并且三相导体连接到另一个。 在延迟相移配置中，移动链接使得连接相反。
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