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公开(公告)号：US4493016A
公开(公告)日：1985-01-08
申请号：US433322
申请日：1982-10-07
Applicant: Edward J. Cham , Theodore R. Specht
Inventor： Edward J. Cham , Theodore R. Specht
Abstract: A rectifier transformer circuit permitting six-phase double-wye operation with 120.degree. conduction, (without the use of an interphase transformer), and providing any predetermined degree of phase shift. The transformer comprises a zig-zag wye primary winding and a six-phase star secondary winding. By choosing the proper ratio for the turns of the zig and zag portions of the primary winding, any degree of phase shift can be obtained. The rectifier transformer is ideally suited for multiple-phase installations wherein several rectifier transformers are used, each providing a different amount of phase shift, without the use of separate phase-shift transformers.
Abstract translation: 一个整流变压器电路，允许六相双向工作，120°导通，（不使用相间变压器），并提供任何预定程度的相移。 变压器包括锯齿形初级绕组和六相星形二次绕组。 通过选择初级绕组的曲折部分和Z形部分的匝数的适当比例，可以获得任何程度的相移。 整流变压器非常适合于多相安装，其中使用多个整流变压器，每个变压器提供不同量的相移，而不使用单独的相移变压器。
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公开(公告)号：US4344126A
公开(公告)日：1982-08-10
申请号：US193565
申请日：1980-10-03
Applicant: Berthold W. Schumacher
Inventor： Berthold W. Schumacher
Abstract: A high voltage power supply used to transfer three-phase a.c. energy to d.c. at full rated power over a large range of output voltages. The electric and magnetic circuits are arranged according to the core type of construction wherein three legs of the iron core extend axially and have the primary coil wound along their full length. The core legs are joined for magnetic circuit continuity at the extremities. A plurality of high voltage decks each having three secondary winding modules mounted and interconnected are stacked axially over the axially extending iron core pieces. The secondary coils on each high voltage deck are interconnected in several three-phase connections, to produce a phase shift in the ripple of the d.c. output voltage of the various decks. A high voltage bridge rectification circuit mounted on each deck produces full wave rectification of the ouptut. Each high voltage deck provides a contact which is engaged selectively by contacts mounted on an axially extending rotary switch whose angular position varies the interconnections of the high voltage decks to produce a range of output voltages at the full rated power of the transformer. A counterbalance circuit to reduce any residual voltage ripple component at multiples of the input frequency includes the application of an a.c. voltage of proper phase and amplitude supplied at the ground return lead of the series-parallel connected high voltage decks. The counterbalance voltage is applied by way of an additional secondary winding of a few turns coiled over the three legs of the transformer core, but is completely independent of the primary and secondary windings. The number of turns of the additional winding and the leg from which the voltage is taken are determined empirically.
Abstract translation: 用于传输三相交流电源的高压电源。 能量到直流 在大范围的输出电压下以全额定功率。 电磁回路根据铁心型式进行布置，其中铁芯的三条腿轴向延伸并且使初级线圈沿其全长卷绕。 芯腿连接在四肢的磁路连续性。 每个具有安装和互连的三个次级绕组模块的多个高压面板轴向地堆叠在轴向延伸的铁芯片上。 每个高压甲板上的次级线圈在几个三相连接中相互连接，以产生直流电压纹波的相移。 各种甲板的输出电压。 安装在每个甲板上的高压桥式整流电路产生全频波整流。 每个高压甲板提供一个触点，该触点通过安装在轴向延伸的旋转开关上的触点选择性地接合，其角度位置改变高压甲板的互连，以在变压器的全额定功率下产生一定范围的输出电压。 用于减少输入频率倍数的任何残余电压纹波分量的平衡电路包括应用a.c. 串联并联连接的高压甲板的接地回路引线上提供的适当相位和幅度的电压。 平衡电压通过在变压器铁芯的三个支路上卷绕的几匝的附加次级绕组施加，但完全独立于初级和次级绕组。 根据经验确定施加电压的附加绕组和支脚的匝数。
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公开(公告)号：US4085603A
公开(公告)日：1978-04-25
申请号：US767225
申请日：1977-02-09
Applicant: Jaroslav Vanek
Inventor： Jaroslav Vanek
CPC classification number: H01F30/12 , H01F27/25 , H01F41/0213 , H01F41/024 , Y10T29/49071 , Y10T29/49078
Abstract: The invention relates to star-shaped magnetic circuit elements. Such elements can be obtained by manufacturing a tore-shaped magnetic circuit element by winding a magnetic sheet strip around a pin. Then this tore-shaped element is pressed by converging equidistant pressing means. The obtained star is adapted to receive electrical coil bobbins on each of its legs and is accordingly adapted for constituting the core of a symmetrical star-shaped transformer.
Abstract translation: 本发明涉及星形磁路元件。 这样的元件可以通过将磁性片带卷绕在销上缠绕来制造成形磁路元件来获得。 然后，通过会聚的等距压制装置按压该成形元件。 所获得的星座适于在其每个腿上接收电线圈线轴，因此适于构成对称的星形变压器的铁心。
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公开(公告)号：US3984654A
公开(公告)日：1976-10-05
申请号：US479312
申请日：1974-06-14
Applicant: Wayne Edwin Hoffman , William Charles Downing , Kenneth Anthony Golonka
IPC: B23K9/073 , B23K9/08 , B23K9/10 , H01F27/24 , H01F27/28 , H01F27/38 , H01F30/12 , H02M7/06 , H02M7/162
CPC classification number: H01F30/12 , B23K9/0732 , B23K9/1056 , H02M7/068 , H02M7/1626
Abstract: A multi-phase SCR-rectifier controlled arc welding power source having improved operating and internal protection characteristics. The transformer has an improved core and winding design having a built-in internal reactance and a core arrangement which is scrapless and very compact. The output has an adjustable, drooping, volt-ampere curve such that the welding current may be readily preset or adjusted to any desired value.The power source includes an unusually high inductance for a three phase source so as to give a very stable arc with a control circuit having provisions to properly control the conduction angle of the SCR's so as to overcome the disadvantages of such a large choke on starting or short circuiting so as to give optimum welding characteristics. Further the ratio of short circuit current to welding current is controlled and decreases with an increase in the welding current. Protection against damage of the power source is provided in the event of extended short circuit or overload. Compensation for line voltage variation is also provided.
Abstract translation: 具有改进的操作和内部保护特性的多相SCR整流器控制的电弧焊电源。 该变压器具有改进的铁心和绕组设计，具有内置的内部电抗以及无废料且非常紧凑的核心布置。 输出具有可调节的下垂伏安曲线，使得焊接电流可以容易地预设或调节到任何期望值。
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75.发明授权
公开(公告)号：US3876929A
公开(公告)日：1975-04-08
申请号：US38349973
申请日：1973-07-30
Applicant: LAING NIKOLAUS
Inventor： LAING NIKOLAUS
CPC classification number: H01F30/12
Abstract: A transformer for use with an electric motor for a submersible pump the stator of which has a group of coils with each group of coils being subdivided into a plurality of coils of different widths arranged symmetrically with respect to the axis of each group of coils and where the transformer applies different voltages to each coil group. The transformer has a core made up of a plurality of portions having different cross sections and a plurality of secondary windings with a secondary winding surrounding each of the core portions and where each secondary winding is adapted to be connected at one of its ends to a common star point joining the plurality of coils of a single coil group and at its other end to an individual coil of the coil group.
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Patent Agency Ranking
公开(公告)号：US3840720A
公开(公告)日：1974-10-08
申请号：US33781373
申请日：1973-03-05
Applicant: WOLF E
Inventor： WOLF E
Abstract: A manually operated portable welding head is supplied direct current from a three-phase transformer-rectifier assembly comprising three identical single-phase transformer-rectifier assemblies. Each single-phase transformer-rectifier assembly includes an E-frame transformer core, a primary winding, and a secondary winding. Each of the secondary windings is provided with three terminals electrically connected to that secondary winding at the two ends and the center thereof. These terminals are spatially located substantially immediately adjacent the periphery of the secondary winding to which they are connected to thereby minimize the lengths of the conductors connecting that secondary winding with these terminals. Three diodes are electrically and mechanically connected to each of the terminals connected to the end of a secondary winding. A conductor bus is electrically connected to each of these eighteen diodes at the terminals thereof opposite their connections with the transformer terminals. A second conductor bus is connected with the three center tap terminals. Full-wave rectified three-phase voltage for the operation of the portable welding head is available at these conductor busses.
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公开(公告)号：US3659239A
公开(公告)日：1972-04-25
申请号：US3659239D
申请日：1970-03-12
Applicant: MARTON LOUIS L
Inventor： MARTON LOUIS L
Abstract: A power transformer constructed so as to exhibit improved heat dissipation characteristics and a longer thermal time constant. The transformer construction is characterized by minimizing or eliminating gaps between the core and coil structure and between sections of the coil structure. Highly heat conductive dissipator layers are mounted between adjacent coil sections and extend beyond the coil structure terminating in fins arranged to assure maximum heat transfer to a cooling medium flowing therepast.
Abstract translation: 一种电力变压器，其构造为具有改善的散热特性和较长的热时间常数。 变压器结构的特征在于最小化或消除了芯线圈结构之间和线圈结构段之间的间隙。 高度导热的耗散层安装在相邻的线圈部分之间，并且延伸超过线圈结构，其终止于翅片，其布置成确保最大限度地传递到在那里流动的冷却介质。
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公开(公告)号：US3568035A
公开(公告)日：1971-03-02
申请号：US3568035D
申请日：1969-03-18
Applicant: COMMISSARIAT ENERGIE ATOMIQUE
Inventor： PIERSON ALEXANDRE
CPC classification number: H05H5/02 , H01F30/10 , H01F30/12 , H01F38/18 , H01F2019/085 , H02M7/10 , H02M2001/0077
Abstract: A transfer coil consisting of a loop provided with a sufficient electrical insulation is fed by an AC source and is inductively coupled with a plurality of cells. Each cell consists of a winding coupled with the loop and a rectifier circuit fed by the winding. The outputs of all rectifiers are in series aiding relation. In a first embodiment the loop is closed and inductively coupled to the source, making it possible to connect it to half the high voltage. In another embodiment, the loop ends are connected to a winding inductively coupled with the source and the loop is at the source DC potential.
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公开(公告)号：US3395373A
公开(公告)日：1968-07-30
申请号：US57637066
申请日：1966-08-31
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： STEPHENS DONALD S
IPC: H01F30/12
CPC classification number: H01F30/12
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公开(公告)号：US3274526A
公开(公告)日：1966-09-20
申请号：US29569863
申请日：1963-07-17
Applicant: HIGH VOLTAGE ENGINEERING CORP
Inventor： EMANUELSON ROY M
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