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1. 发明申请

US20180122549A1 MULTI-WINDING HIGH SENSITIVITY CURRENT TRANSFORMER 审中-公开
公开(公告)号：US20180122549A1
公开(公告)日：2018-05-03
申请号：US15854231
申请日：2017-12-26
申请人： General Electric Company
发明人： Dan Tho Lu
IPC分类号： H01F27/24 , H01F38/28 , G01R15/18 , G01R31/34 , H01F38/30
CPC分类号： H01F27/24 , G01R15/183 , G01R31/343 , H01F38/28 , H01F2038/305
摘要： A system includes a sensor configured to detect an electrical leakage current associated with an operation of an industrial machine. The sensor includes a core and a first winding encircling a first portion of the core. The first winding includes a first number of turns. The first winding is configured to obtain a set of electrical current measurements associated with the operation of the industrial machine. The sensor includes a second winding encircling a second portion of the core. The second winding includes a second number of turns. The second winding is configured to obtain the set of electrical current measurements associated with the operation of the industrial machine. The first winding and the second winding are each configured to generate respective outputs based on the set of electrical current measurements. The respective outputs are configured to be used to reduce the occurrence of a distortion of the set of electrical current measurements based on a temperature of the core.

2. 发明申请

US20180019057A1 In-Situ Wound Current Transformer Core 审中-公开
公开(公告)号：US20180019057A1
公开(公告)日：2018-01-18
申请号：US15645507
申请日：2017-07-10
申请人： Google Inc.
发明人： Karthik Yogeeswaran , James A. Mass
IPC分类号： H01F27/32 , H01F27/28 , H01F38/30 , H01F41/08
CPC分类号： H01F27/325 , H01F27/2895 , H01F38/30 , H01F41/022 , H01F41/08 , H01F41/096 , H01F2038/305
摘要： A current transformer includes first and second bobbins, and a secondary winding. The first bobbin includes a first tube defining a first longitudinal axis. First and second flanges are disposed on first and second ends of the first tube. The first tube, the first and second flanges collectively define a first slit along the first longitudinal axis. The first slit allows receipt of a primary conductor into the first tube. The second bobbin includes a second tube rotatably received about the first tube. The second tube defines a second slit along the second longitudinal axis. The second slit allows receipt of the primary conductor into the first and second tubes. The secondary winding is wound about the first bobbin and extends along the first longitudinal axis, passing through the first tube and over the first and second flanges. The second tube rotates about the second longitudinal axis relative to the first tube.

3. 发明授权

US09793818B2 Unit current transformer device and magnetic induction power supplying device for linearly controlling output power by using the same 有权
公开(公告)号：US09793818B2
公开(公告)日：2017-10-17
申请号：US14760464
申请日：2014-11-19
申请人： FERRARISPOWER CO., LTD
发明人： Ja-Il Koo
IPC分类号： H02M5/45 , H02M5/458 , H01F38/28 , H02J50/12 , H01F38/30
CPC分类号： H02M5/458 , H01F38/28 , H01F2038/305 , H02J50/12
摘要： The present invention relates to a unit current transformer device and a magnetic induction power supplying device, and particularly to a magnetic induction power supply unit capable of linearly adjusting output power according to the number of unit current transformer devices configured to have a specific resonance frequency. To this end, the unit current transformer device includes a current transformer inducing secondary current from primary current flowing through a line in a magnetic induction manner and having a resonant frequency double or greater than that of the primary current, and a converting unit converting an output of the current transformer to DC power.

4. 发明申请

US20160225520A1 DEVICE AND METHOD FOR RELEASING A MAGNETIC CORE MOUNTED AROUND A CURRENT CARRYING ELECTRIC CONDUCTOR 审中-公开
标题翻译：用于释放在电流导体上安装的磁芯的装置和方法
公开(公告)号：US20160225520A1
公开(公告)日：2016-08-04
申请号：US14953348
申请日：2015-11-29
申请人： ELECTRICAL GRID MONITORING LTD.
发明人： EYAL MIRON
IPC分类号： H01F38/30
CPC分类号： H01F38/30 , G01R15/186 , H01F38/28 , H01F2038/305
摘要： A device and a method for demounting a magnetic permeable core mounted around an electric conductor carrying electric current, the device including the core including at least two parts closed around the electric conductor, a secondary coil of electric wire wrapped around at least one part of the core, the coil having two terminals, each at one end of the coil, and a switch, electrically coupled to the two terminals, the switch being operative, when closed, to maintain a short circuit of the coil upon demand, where mounting the device on the electric conductor includes closing the two parts of the core to around the electric conductor while the switch is open, and where demounting the device from the electric conductor includes closing the switch to disengage the two parts of the core.
摘要翻译：一种用于拆卸安装在承载电流的导电体周围的磁性可渗透芯的装置和方法，所述装置包括所述芯，所述芯包括围绕所述导电体封闭的至少两个部分，电线的次级线圈缠绕在所述电线的至少一部分所述线圈具有两个端子，每个在所述线圈的一端处，以及开关，电耦合到所述两个端子，所述开关在关闭时可操作，以在需要时保持所述线圈的短路，其中安装所述装置在电导体上包括在开关断开的同时将芯的两部分封闭到导电体周围，并且从电导体拆卸装置包括闭合开关以使芯的两个部分脱离。

5. 发明授权

US09218905B2 AC/DC current transformer 有权
标题翻译： AC / DC电流互感器
公开(公告)号：US09218905B2
公开(公告)日：2015-12-22
申请号：US14470110
申请日：2014-08-27
申请人： Michael P. Vangool
发明人： Michael P. Vangool , Geoffrey J. Baker
IPC分类号： H01F38/28 , H01F38/32 , G06F1/26 , H01F38/30
CPC分类号： H01F38/28 , H01F38/32 , H01F2038/305
摘要： A method for processing output from a current transformer comprising deriving signal data from the output; converting the signal data from analog to digital format; removing a carrier signal from the signal data; squaring the signal data; and performing a recursive RMS algorithm on the signal data.
摘要翻译：一种用于处理来自电流互感器的输出的方法，包括从所述输出导出信号数据; 将信号数据从模拟转换成数字格式; 从所述信号数据中去除载波信号; 平均信号数据; 并对信号数据执行递归RMS算法。

6. 发明申请

US20150301087A1 Differential current measuring module 审中-公开
标题翻译：差分电流测量模块
公开(公告)号：US20150301087A1
公开(公告)日：2015-10-22
申请号：US14688048
申请日：2015-04-16
申请人： Bender GmbH & Co. KG
发明人： Winfried Moell , Michael Kammer , Michael Prinz-Weinel
IPC分类号： G01R15/18 , G01R17/00 , G01R15/22
CPC分类号： G01R15/185 , G01R19/10 , H01F27/2828 , H01F27/306 , H01F38/30 , H01F2038/305
摘要： A differential current measuring module is composed of a housing that encases a current transformer core and a printed circuit board, the current transformer core surrounding a line duct of the housing and having at least one secondary winding. The differential current measuring module is characterized in that in the line duct, at least one primary conductor is led out on a top side of the housing to be connected to an external electrical feed line and whose other end protrudes out of a bottom side of the housing and is provided with a solder terminal. The principle idea is based on continuing the electrical line to be monitored, in sections, as a primary conductor in the effective area of the current transformer core so as to advantageously arrive at a differential current measuring device whose integration is constructionally simple and which offers an uncomplicated connecting option.
摘要翻译：差动电流测量模块由外壳组成，外壳包含电流互感器芯和印刷电路板，电流互感器芯围绕外壳的线路管道并具有至少一个次级绕组。差动电流测量模块的特征在于，在线路导管中，至少一个主导体在壳体的顶侧被引出以连接到外部馈电线，并且另一端突出到外壳的底侧壳体并设置有焊接端子。原理思想是基于在电流互感器芯的有效区域中继续作为主导体来监控的电线，以便有利地到达差分电流测量装置，该差分电流测量装置的结构简单并且提供了一种简单的连接选项。

7. 发明申请

US20150116066A1 INSULATING SUPPORT FLANGE FOR CURRENT LOOP SYSTEM 审中-公开
标题翻译：绝缘支撑法兰用于电流环系统
公开(公告)号：US20150116066A1
公开(公告)日：2015-04-30
申请号：US14590696
申请日：2015-01-06
申请人： ROCKWELL AUTOMATION TECHNOLOGIES, INC.
发明人： David Scott MacLennan , Mariana Wentzell
IPC分类号： H01F27/32 , H01F27/06
CPC分类号： H01F27/324 , H01F27/06 , H01F30/04 , H01F38/28 , H01F2038/305 , H03K2217/0081 , Y10T16/05
摘要： The present invention relates generally to systems and methods for isolating a current loop conductor of a current loop system of a pre-charge circuit from a plurality of current transformers disposed around the current loop conductor. In particular, the embodiments described herein include an insulating support flange having a first tubular section, a second tubular section radially disposed around the first tubular section and connected to the first tubular section via a solid annular section extending radially outward from the first tubular section to a first end of the second tubular section, an annular base extending radially outward from a second end of the second tubular section, and a plurality of prongs extending axially from or near to an outer circumference of the annular base, wherein each of the prongs comprises an end face that is angled toward the second tubular section. The insulating support flanges are configured to mate with each other along an axial direction of the current loop conductor. In addition, each of the plurality of current transformers is installed (i.e., held in place) between the prongs, annular base, and second annular section of its respective insulating support flange. As such, a fixed open air space between the first and second annular sections of the insulating support flanges isolates the current transformers from the current loop conductor, thereby reducing the possibility of discharge between the current transformers and the current loop conductor.
摘要翻译：本发明一般涉及用于将预充电电路的电流回路系统的电流回路导体与设置在电流回路导体周围的多个电流互感器隔离的系统和方法。特别地，本文所述的实施例包括具有第一管状部分的绝缘支撑凸缘，围绕第一管状部分径向设置的第二管状部分，并且经由从第一管状部分径向向外延伸的固体环形部分连接到第一管状部分所述第二管状部分的第一端部，从所述第二管状部分的第二端径向向外延伸的环形基部以及从所述环形基部的外圆周或从其附近轴向延伸的多个尖头，其中每个所述插脚包括端面朝向第二管状部分成角度。绝缘支撑凸缘构造成沿着电流回路导体的轴向彼此配合。此外，多个电流互感器中的每一个都安装在其相应绝缘支撑凸缘的插脚，环形基座和第二环形部分之间（即保持就位）。这样，绝缘支撑凸缘的第一和第二环形部分之间的固定露天空间将电流互感器与电流环路导体隔离，从而减小了电流互感器与电流环路导体之间放电的可能性。

8. 发明授权

US08957753B2 Current transformer 有权
标题翻译：电流互感器
公开(公告)号：US08957753B2
公开(公告)日：2015-02-17
申请号：US13302400
申请日：2011-11-22
申请人： Martin Odehnal , Roman Pernica , Pavel Vano
发明人： Martin Odehnal , Roman Pernica , Pavel Vano
IPC分类号： H01F38/20 , H01F17/06 , H01F27/32 , H01F38/30 , H01F27/28
CPC分类号： H01F38/30 , H01F27/289 , H01F27/427 , H01F2038/305
摘要： Exemplary embodiments are directed to a current transformer having a toroidal magnetic core around which an even number of shielding coils is wound. The shielding coils are operatively associated two by two to form corresponding couples. The shielding coils of each couple are wound on parts of the toroidal magnetic core opposite to each other and are connected in parallel to each other for obtaining a magnetic flux in them. The magnetic flux in a first shielding coil of a couple of shielding coils has an opposite direction with respect to a magnetic flux in a second shielding coil of the couple. The couples of shielding coils are connected in series.
摘要翻译：示例性实施例涉及具有环形磁芯的电流互感器，围绕其缠绕有数量的屏蔽线圈。屏蔽线圈可操作地关联两个以形成相应的耦合。每对耦合的屏蔽线圈缠绕在环形磁芯的彼此相对的部分上并且彼此并联连接以在其中获得磁通量。一对屏蔽线圈的第一屏蔽线圈中的磁通量相对于耦合的第二屏蔽线圈中的磁通量具有相反的方向。两对屏蔽线圈串联连接。

9. 发明申请

US20100148907A1 CURRENT TRANSFORMER AND ELECTRICAL MONITORING SYSTEM 审中-公开
公开(公告)号：US20100148907A1
公开(公告)日：2010-06-17
申请号：US12336653
申请日：2008-12-17
申请人： Karim Younsi , Prabhakar Neti , Charles David Whitefield, II , Yingneng Zhou , Tiziana Bertoncelli
发明人： Karim Younsi , Prabhakar Neti , Charles David Whitefield, II , Yingneng Zhou , Tiziana Bertoncelli
IPC分类号： H01F27/28
CPC分类号： H01F38/30 , G01R15/183 , G01R31/343 , H01F27/006 , H01F38/32 , H01F2038/305
摘要： A current transformer comprises a magnetic core having a closed central opening, at least two conductors extending through the central opening and positioned symmetrically within the magnetic core, and at least one set of winding turns wound around the core in a balanced configuration with respect to the at least two conductors.

10. 发明授权

US07583173B2 Nanocrystalline core for a current sensor, single and double-stage energy meters and current probes containing them 有权
标题翻译：用于电流传感器的纳晶晶芯，单级和双级能量计和含有它们的电流探头
公开(公告)号：US07583173B2
公开(公告)日：2009-09-01
申请号：US11666697
申请日：2005-10-26
申请人： Thierry Waeckerle , Fabien Simon , Francisco Alves , Thierry Save , Alain Demier
发明人： Thierry Waeckerle , Fabien Simon , Francisco Alves , Thierry Save , Alain Demier
IPC分类号： H01F27/24
CPC分类号： H01F1/15308 , G01R15/183 , G01R22/00 , H01F1/15333 , H01F27/422 , H01F38/28 , H01F2038/305
摘要： A nanocrystallised tape-wound core without a localised airgap, consisting of a nanocrystalline material with the following atomic composition: [Fe1-aNia]100-x-y-z-a-β-γCuxSiyBzNbaM′βM″γ, wherein a≦0.3, 0.6≦x≦1.5, 10≦y≦17, 5≦z≦14, 2≦a≦6, β≦7, γ≦8, M′ is at least one of the elements V, Cr, Al and Zn, M″ is at least one of the elements C, Ge, P, Ga, Sb, In and Be, with a permeability μ of 200 to 4000, a saturation of more than 1T, an induction range, in which the permeability does not vary by more than 5%, of more than 0.9T, a remanent induction of less than 0.02T and a cut-off frequency higher than 1 MHz, such that μ varies by less than 1% when the core is aged for 100h at more than 100° C., μ varies by less than 5% when the core is coated, μ varies by less than 15% when the temperature is in the range of −25° C. and +60° C., and by less than 25% when the temperature is in the range of −40° C. and +120° C., and μ varies in a monotonic and substantially linear manner with a temperature of −40° C. to +120° C.
摘要翻译：由具有以下原子组成的纳米晶体材料构成的具有局部气隙的纳米结晶带缠绕芯：[Fe1-aNia] 100-xyza-β-γCuxSiyBzNbaM'betaM''gamma，其中a <= 0.3,0.6 <= x <= 1.5,10 <= y <= 17,5 <= z <= 14,2 <= a <= 6，β<= 7，γ<= 8，M'是元素V，Cr中的至少一个，Al和Zn中的至少一种元素，M“为元素C，Ge，P，Ga，Sb，In和Be中的至少一种，磁导率μ为200〜4000，饱和度大于1T，感应范围为其磁导率不超过5％，大于0.9T，剩余感应小于0.02T，截止频率高于1MHz，使得当核心为核心时，mu变化小于1％在超过100℃时老化100小时，当芯被涂覆时，μ变化小于5％，当温度在-25℃和+ 60℃的范围内时，μ变化小于15％。，当温度在-40℃和+ 120℃的范围内小于25％，并且μ在单调和子变化中变化在-40°C至+ 120°C的温度下以线性方式

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