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31. 发明授权

US5446643A Harmonic blocking converter system 失效
标题翻译：谐波阻塞转换器系统
公开(公告)号：US5446643A
公开(公告)日：1995-08-29
申请号：US193442
申请日：1994-02-08
申请人： William McMurray
发明人： William McMurray
IPC分类号： H01F27/38 , H02M7/48 , H02M7/49 , H02M1/12
CPC分类号： H02M7/49 , H01F27/385
摘要： A harmonic blocking converter system for converting power between an AC source and a DC source includes a harmonic blocking transformer and a converter which generates undesirable harmonic currents including fifth and seventh harmonic components. The harmonic blocking transformer includes a polyphase main transformer and a harmonic blocker coupled with wye and delta secondary windings of the main transformer, so as to substantially block passage of the fifth and seventh harmonic currents to the AC source. A waveform enhancer may couple the harmonic blocking transformer with the converter. The converter may be constructed for 2-level operation, or, with the addition of auxiliary diodes, for 3-level operation. Such a harmonic blocking transformer and a method of blocking undesirable harmonic currents are also provided.
摘要翻译：用于在AC源和DC源之间转换功率的谐波阻塞转换器系统包括谐波阻塞变压器和转换器，其产生包括第五和第七谐波分量的不期望的谐波电流。谐波阻塞变压器包括多相主变压器和与主变压器的叶片和三角形次级绕组耦合的谐波阻塞器，以便基本上阻止第五和第七谐波电流通过AC电源。波形增强器可以将谐波阻塞变压器与转换器耦合。转换器可以构造为2级操作，或者通过添加辅助二极管，用于3级操作。还提供了这种谐波阻塞变压器和阻塞不期望的谐波电流的方法。

32. 发明授权

US5434455A Harmonic cancellation system 失效
标题翻译：谐波消除系统
公开(公告)号：US5434455A
公开(公告)日：1995-07-18
申请号：US286412
申请日：1994-08-05
申请人： John B. Kammeter
发明人： John B. Kammeter
IPC分类号： H01F27/38 , H01F30/14 , H02J3/01
CPC分类号： H01F27/385 , H01F30/14 , H02J3/01 , Y02E40/40
摘要： A harmonic current filtering transformer includes a three-phase input winding and at least two wye-connected three-phase output windings. Windings for each of the phases includes an in-phase coil connected between a common neutral and vector coils for each of the other two phases, the output windings thereby being phase shifted relative to each other by an amount which causes harmonic currents generated by a non-linear load to magnetically cancel in the transformer core. The harmonic current filtering transformer may be used as part of a harmonic cancelling power system which includes multiple linear and nonlinear loads, and protective devices, switches, filters and other components on both the input and output sides of the transformer as in a conventional power system since the harmonic cancelling transformer does not require additional secondary windings or other electrical components previously thought necessary to achieve harmonic cancellation.
摘要翻译：谐波电流滤波变压器包括三相输入绕组和至少两个三相输出绕组。每个相的绕组包括连接在用于其他两相中的每一相的公共中性线圈和矢量线圈之间的同相线圈，因此输出绕组相对于彼此相移一定量，该量使得由非线性产生的谐波电流在变压器铁芯中磁性抵消的线性负载。谐波电流滤波变压器可以用作包括多个线性和非线性负载的谐波消除电力系统的一部分，以及在传统电力系统中的变压器的输入和输出侧上的保护装置，开关，滤波器和其它部件因为谐波消除变压器不需要额外的次级绕组或以前认为必要的其他电气元件来实现谐波消除。

33. 发明授权

US5343080A Harmonic cancellation system 失效
标题翻译：谐波消除系统
公开(公告)号：US5343080A
公开(公告)日：1994-08-30
申请号：US196813
申请日：1994-02-14
申请人： John B. Kammeter
发明人： John B. Kammeter
IPC分类号： H01F27/38 , H01F30/14 , H02J3/01
CPC分类号： H02J3/01 , H01F27/385 , H01F30/14 , Y02E40/40
摘要： A harmonic current filtering transformer includes a three-phase input winding and at least two wye-connected three-phase output windings. The output windings are phase shifted relative to each other by an amount which causes harmonic currents generated by a non-linear load to magnetically cancel in the transformer core.
摘要翻译：谐波电流滤波变压器包括三相输入绕组和至少两个三相输出绕组。输出绕组相对于彼此相移一定量，该量使得由非线性负载产生的谐波电流在变压器磁芯中磁性消除。

34. 发明授权

US4112403A Saturated reactor arrangements 失效
标题翻译：饱和反应堆布置
公开(公告)号：US4112403A
公开(公告)日：1978-09-05
申请号：US743790
申请日：1976-11-22
申请人： Erich Siegfried Friedlander
发明人： Erich Siegfried Friedlander
IPC分类号： H01F27/38 , H01F30/12 , H01F33/00 , G05F3/06
CPC分类号： H01F27/385 , H01F30/12
摘要： A saturated reactor adapted for direct connection to an EHV line and thus constituting a combined reactor and transformer. A problem arises in that earthing of the primary winding star point would normally short circuit the 3rd harmonic. The invention overcomes this by series connection of primary coils coupled to three limbs whose fluxes are spaced at 40.degree.. 3rd harmonic voltages therefore cancel in the series primary windings. The series primary windings may be obtained as separate coils on individual limbs or as one coil (per phase) embracing three limbs. Elimination of the 3rd harmonic enables the ninth harmonic to be short circuited in a mesh winding.
摘要翻译：饱和电抗器，适用于直接连接到EHV线路，从而组成电抗器和变压器。出现的问题是，初级绕组星点的接地通常会使三次谐波短路。本发明克服了这种情况，其通过串联连接耦合到通量间隔40度的三个肢体的初级线圈。三次谐波电压因此在串联初级绕组中消除。串联初级绕组可以作为单独的线圈获得，或者作为包围三个肢体的一个线圈（每相）获得。消除三次谐波使第九谐波在网状绕组中短路。

35. 发明授权

US3611224A Controllable reactive current generator 失效
标题翻译：可控电流发电机
公开(公告)号：US3611224A
公开(公告)日：1971-10-05
申请号：US75523968
申请日：1968-08-26
申请人： LICENTIA GMBH
发明人： BECKER HANS LUDWIG
IPC分类号： H01F27/38 , H01F29/14 , H02J3/04 , H02J3/18 , H02M5/12 , H01F33/00
CPC分类号： H02M5/12 , H01F27/385 , H01F29/14 , H02J3/04 , H02J3/1835 , Y02E40/30
摘要： Apparatus, containing no moving parts, for generating controllable sinusoidal reactive currents in an n-phase mains. The apparatus includes a primary winding, connected to each phase of the mains, having 2n windings which are associated, in groups of two, with each respective phase of mains. The apparatus also includes either the second one alone or both of the following two auxiliary windings: (1) a delta-connected alternating current winding having 2n windings which are connected serially in groups of two, each group being associated with a respective phase of the mains, and (2) a direct current winding also having 2n windings which are connected serially, in groups of two with each group being associated with a respective phase of the mains. The two windings in each group of the direct current winding are wound in opposition. Each of the windings of the primary winding excites a separate magnetic circuit which contains respective the one of the windings of the auxiliary winding or windings.

36. 发明授权

US2474525A Control for vapor discharge tubes and electric arcs 失效
标题翻译：控制蒸汽放电管和电弧
公开(公告)号：US2474525A
公开(公告)日：1949-06-28
申请号：US52925344
申请日：1944-04-03
申请人： MODERN CONTROLS INC
发明人： HAUG EUGENE H
IPC分类号： G05F3/06 , H01F27/38
CPC分类号： G05F3/06 , H01F27/385 , Y10S315/05

37. 发明授权

US09966905B2 Weakly coupled based harmonic rejection filter for feedback linearization power amplifier 有权
公开(公告)号：US09966905B2
公开(公告)日：2018-05-08
申请号：US14215800
申请日：2014-03-17
申请人： RF Micro Devices, Inc.
发明人： Dirk Robert Walter Leipold , George Maxim , Baker Scott , Danny W. Chang
IPC分类号： H01F27/28 , H03F1/32 , H03F3/195 , H03F3/21 , H03F3/19 , H03F3/213 , H01F27/38 , H03H7/09 , H03H7/01 , H03F1/34 , H03F1/22
CPC分类号： H03F1/3241 , H01F27/28 , H01F27/385 , H03F1/22 , H03F1/32 , H03F1/34 , H03F3/19 , H03F3/195 , H03F3/211 , H03F3/213 , H03H7/09 , H03H7/1775
摘要： Radio frequency (RF) filters configured to filter undesired signal components (e.g., noise and harmonics) from RF signals are disclosed. In one embodiment, an RF filter includes a first inductor coil having a first winding and a second inductor coil having a second winding and a third winding. The second winding of the second inductor coil is configured to have a first mutual magnetic coupling with the first winding, while the third winding of the second inductor coil is configured to have a second mutual magnetic coupling with the first winding. The second winding is connected to the third winding such that the first mutual magnetic coupling and the second mutual magnetic coupling are in opposition. In this manner, the first inductor coil and the second inductor coil may be provided in a compact arrangement while providing weak mutual magnetic coupling between the first inductor coil and the second inductor coil.

38. 发明申请

US20180040416A1 INDUCTOR SYSTEM HAVING SHARED MATERIAL FOR FLUX CANCELLATION 有权
公开(公告)号：US20180040416A1
公开(公告)日：2018-02-08
申请号：US15671680
申请日：2017-08-08
申请人： WITRICITY CORPORATION
发明人： Guillaume Lestoquoy
IPC分类号： H01F27/38
CPC分类号： H01F27/385 , H01F3/14 , H01F27/38 , H02J7/00 , H02J50/12
摘要： Methods and apparatus for flux cancellation includes first and second inductors, wherein the first inductor is configured for coupling to a first energy source and the second inductor is configured for coupling to a second energy source. A layer of magnetic material is disposed between the first and second inductors, wherein the first and second inductors are configured such that, when driven with an oscillating current, magnetic flux generated by the first inductor is substantially canceled by magnetic flux generated by the second inductor in the layer of magnetic material.

39. 发明申请

US20170213642A1 EARTH SURFACE POTENTIAL AND HARMONIC MITIGATING TRANSFORMERS 审中-公开
公开(公告)号：US20170213642A1
公开(公告)日：2017-07-27
申请号：US15403076
申请日：2017-01-10
申请人： NEW YORK UNIVERSITY
发明人： Francisco De Leon , Baris Kovan
IPC分类号： H01F27/38 , H02J3/01 , H02J50/12 , H01F27/34
CPC分类号： H01F27/385 , G01R31/027 , H01F27/34 , H02H3/003 , H02H3/331 , H02J3/01 , H02J50/12 , Y02E40/40
摘要： A transformer assembly comprises at least one transformer having a core. A primary winding is positioned on a first portion, a secondary winding is positioned on a second portion of the core. A neutral winding may be positioned on a third portion of the core. The secondary winding may receive an induced flux produced by an earth surface potential (ESP) via a system ground and/or receive an induced zero sequence flux produced by a non-linear load. The neutral winding may be configured to provide a mitigating flux to the secondary winding. The transformer may also be used as a filter for either GIC or triplen harmonic mitigation. In this case, the primary windings receive the zero sequence current (GIC or triplen harmonics) and the flux may be cancelled in neutral winding such that the zero sequence currents circulate between the zero sequence source and the filter transformer.

40. 发明申请

US20170201223A1 Integrated Circuit Fields Canceller System 有权
公开(公告)号：US20170201223A1
公开(公告)日：2017-07-13
申请号：US14993373
申请日：2016-01-12
申请人： Qualcomm Technologies International, Ltd.
发明人： Zaid Aboush
IPC分类号： H04B3/28 , H03B5/08 , H03H7/01 , H03H7/42
CPC分类号： H03H7/0138 , H01F17/0006 , H01F19/04 , H01F27/2804 , H01F27/385 , H03B1/04 , H03B5/08 , H03B2200/0016 , H03F2200/09 , H03F2200/541 , H03F2203/45731 , H03H1/0007 , H03H7/0115 , H03H7/1758 , H03H7/42 , H03H2001/0078 , H03H2007/013 , H04B1/0475 , H04B15/00
摘要： The present disclosure relates to a circuit for suppressing unwanted magnetic interference. The circuit can have a transformer having a first coil, a first pair of input terminals, and a first pair of output terminals. The transformer can produce a first magnetic field. The circuit can also have a harmonic trap. The harmonic trap can have a second coil and a second pair of input terminals operably coupled to the first pair of input terminals. The harmonic trap can produce a second magnetic field opposing the first magnetic field. The harmonic trap can suppress electrical signals of at least one of the first input terminals and the first output terminals of the transformer at a resonant frequency of the harmonic trap. The harmonic trap can also suppress the first magnetic field in a far field.

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