公开(公告)号：US20180122549A1

公开(公告)日：2018-05-03

申请号：US15854231

申请日：2017-12-26

Applicant: General Electric Company

Inventor： Dan Tho Lu

IPC: H01F27/24 ,  H01F38/28 ,  G01R15/18 ,  G01R31/34 ,  H01F38/30

CPC classification number: H01F27/24 ,  G01R15/183 ,  G01R31/343 ,  H01F38/28 ,  H01F2038/305

Abstract: 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.

公开(公告)号：US09928955B2

公开(公告)日：2018-03-27

申请号：US14424824

申请日：2013-08-29

Applicant: KYOCERA CORPORATION

Inventor： Tetsuya Takenaka

IPC: H01F38/38 ,  G01R31/02 ,  G01R31/12 ,  G01R31/40 ,  H02H3/16 ,  H01F38/28 ,  H02H3/33

CPC classification number: H01F38/38 ,  G01R31/025 ,  G01R31/12 ,  G01R31/40 ,  H01F38/28 ,  H02H3/16 ,  H02H3/167 ,  H02H3/335 ,  H02H3/338 ,  H02S50/00

Abstract: An abnormality occurring in a ZCT is detected simply and reliably. A zero-phase-sequence current transformer (ZCT) (11) detects zero-phase-sequence current in power wires inserted therethrough, and in addition to the power wires, has inserted therethrough a wire through which a constant DC offset current flows.

公开(公告)号：US09793818B2

公开(公告)日：2017-10-17

申请号：US14760464

申请日：2014-11-19

Applicant: FERRARISPOWER CO., LTD

Inventor： Ja-Il Koo

IPC: H02M5/45 ,  H02M5/458 ,  H01F38/28 ,  H02J50/12 ,  H01F38/30

CPC classification number: H02M5/458 ,  H01F38/28 ,  H01F2038/305 ,  H02J50/12

Abstract: 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.

公开(公告)号：US20170212152A1

公开(公告)日：2017-07-27

申请号：US15391102

申请日：2016-12-27

Applicant: Hynetek Semiconductor Co., Ltd.

Inventor： Renjian XIE

IPC: G01R15/18 ,  G01R19/00 ,  H01F38/28

CPC classification number: G01R15/185 ,  G01R19/0092 ,  H01F38/28 ,  H01F38/32

Abstract: A circuit for sampling current includes a current transformer, a reset resistor, a diode, a sampling switch, and a current sampling resistor. The current transformer includes a primary winding and a secondary winding. The reset resistor and two ends of the secondary winding are connected in parallel. The sampling switch, the diode, and the current sampling resistor are connected in series and then connected to two ends of the reset resistor in parallel. The primary winding is for connecting to a circuit to be sampled. When a current flows through the primary winding and the circuit to be sampled and the sampling switch is turned on at a negative AC half cycle, the circuit for sampling current samples the current flowing through the circuit to be sampled.

公开(公告)号：US20160225520A1

公开(公告)日：2016-08-04

申请号：US14953348

申请日：2015-11-29

Applicant: ELECTRICAL GRID MONITORING LTD.

Inventor： EYAL MIRON

IPC: H01F38/30

CPC classification number: H01F38/30 ,  G01R15/186 ,  H01F38/28 ,  H01F2038/305

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20160054359A1

公开(公告)日：2016-02-25

申请号：US14781326

申请日：2014-05-13

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Hiroaki KOTAKE ,  Yoshiaki KOIZUMI ,  Masahiro ISHIHARA

IPC: G01R15/18 ,  G01R19/00

CPC classification number: G01R15/181 ,  G01R19/0092 ,  H01F38/28

Abstract: This current measurement device includes a conductor, a first terminal block, a pair of detection coils and a current calculator. A magnetic field, proportional to the magnitude of a conducted to-be-measured current, is generated around the conductor. The first terminal block has a placement surface on which the conductor is disposed. The pair of detection coils has the configuration, connected in series and in opposite polarities, and disposed on the placement surface of the first terminal block such that the conductor is between the pair of detection coils, and each coil is spaced from the conductor by an insulating distance. The detection coils output an inductive voltage signal produced by the magnetic field generated by the conductor and an external magnetic field which is magnetic noise. A current calculator calculates the value of the to-be-measured current on the basis of the inductive voltage signals from the pair of detection coils.

Abstract translation: 该电流测量装置包括导体，第一端子块，一对检测线圈和电流计算器。 在导体周围产生与导通的待测电流的幅度成比例的磁场。 第一端子块具有布置在该导体上的放置表面。 一对检测线圈具有串联连接并具有相反极性的结构，并且设置在第一端子块的放置表面上，使得导体位于该对检测线圈之间，并且每个线圈与导体间隔一个 绝缘距离。 检测线圈输出由导体产生的磁场产生的感应电压信号和作为磁性噪声的外部磁场。 电流计算器基于来自该对检测线圈的感应电压信号计算待测电流的值。

公开(公告)号：US20160041204A1

公开(公告)日：2016-02-11

申请号：US14454861

申请日：2014-08-08

Applicant: General Electric Company

Inventor： Steven Lee Bietz ,  Subramanyam Satyasurya Chamarti

IPC: G01R15/18 ,  G01R19/00

CPC classification number: G01R15/18 ,  G01R15/181 ,  G01R15/186 ,  G01R19/00 ,  G01R19/0092 ,  H01F38/28

Abstract: A sensor device for use in detecting current in a conductor is provided. The sensor includes a non-magnetic substrate defining an aperture structured to receive a conductor therein, a coil comprising a plurality of turns wound about at least a portion of the substrate, and a housing for enclosing the substrate and coil. The housing includes a dielectric material having a dielectric constant and positioned adjacent to the coil and at least partially within the aperture such that the dielectric material is disposed between the coil and the conductor when the conductor is received through the aperture and at least one spacer coupled to the aperture to facilitate maintaining a position of the coil relative to the conductor, wherein each of the spacers is positioned offset from the dielectric material such that each of the spacers does not radially extend between the coil and the conductor.

Abstract translation: 提供了用于检测导体中的电流的传感器装置。 传感器包括限定被构造成在其中接收导体的孔的非磁性衬底，包括围绕衬底的至少一部分缠绕的多个匝的线圈和用于封装衬底和线圈的壳体。 壳体包括具有介电常数并且邻近线圈并且至少部分地在孔内定位的介电材料，使得当导体通过孔接收时，电介质材料设置在线圈和导体之间，并且至少一个间隔件耦合 以便于维持线圈相对于导体的位置，其中每个间隔物定位成偏离电介质材料，使得每个间隔物在线圈和导体之间不径向延伸。

公开(公告)号：US09218905B2

公开(公告)日：2015-12-22

申请号：US14470110

申请日：2014-08-27

Applicant: Michael P. Vangool

Inventor： Michael P. Vangool ,  Geoffrey J. Baker

IPC: H01F38/28 ,  H01F38/32 ,  G06F1/26 ,  H01F38/30

CPC classification number: H01F38/28 ,  H01F38/32 ,  H01F2038/305

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20150357907A1

公开(公告)日：2015-12-10

申请号：US14761938

申请日：2014-01-17

Applicant: TERA ENERGY SYSTEM SOLUTION CO., LTD

Inventor： Ja-ll KOO

IPC: H02M1/32 ,  H02M5/40 ,  H02M7/06 ,  H02J5/00 ,  H01F38/28

CPC classification number: H02M1/32 ,  H01F38/28 ,  H02J5/005 ,  H02J50/10 ,  H02M5/12 ,  H02M5/225 ,  H02M5/40 ,  H02M7/06 ,  H02M7/08 ,  H02M7/4807 ,  H02M2001/325

Abstract: Disclosed is an electromagnetic induction type power supply device, which generates electric power through an electromagnetic induction method using a transformer from current flowing through a transmission line, can adjust an output thereof by detecting and feeding back the output, enables a transformer and a power converting unit to be added or removed as necessary. The electromagnetic induction type power supply device includes a transformer module including a plurality of transformers for outputting electric power by inducing, in an electromagnetic induction method, secondary current from primary current flowing through a transmission line; a power source module including a plurality of power converting units for converting the electric power output from the plurality of transformers to direct current power and outputting the converted power; and a power summing unit for summing the direct current power output from the plurality of transformers and providing the summed power to a load.

Abstract translation: 公开了一种电磁感应型电力供给装置，其通过使用变压器的电流感应方法从流过传输线的电流产生电力，可以通过检测和反馈输出来调节其输出，使变压器和电力转换 根据需要添加或删除的单位。 电磁感应型电源装置包括：变压器模块，包括多个变压器，用于通过以电磁感应方式从一个流过传输线的一次电流引起二次电流来输出电力; 电源模块，包括多个功率转换单元，用于将从多个变压器输出的电力转换为直流电力并输出转换的功率; 以及功率求和单元，用于对从多个变压器输出的直流电力进行求和并将负载相加。

公开(公告)号：US20150279553A1

公开(公告)日：2015-10-01

申请号：US14675541

申请日：2015-03-31

Applicant: The United States of America as represented by the Secretary of the Navy

Inventor： Josue Kure ,  Timothy Gomez ,  Patrick Arvin

IPC: H01F27/40 ,  G05B15/02 ,  G01R31/02 ,  G01R29/20 ,  H01F21/00 ,  G01R23/00

CPC classification number: G01R29/20 ,  G01R23/00 ,  G01R27/02 ,  G01R31/027 ,  G01R35/02 ,  H01F21/12 ,  H01F27/42 ,  H01F38/28 ,  H01F2029/143

Abstract: A system and method for tuning a transformer is provided. A transformer fixture may connect a switching network to a plurality of inductors of a transformer. At least one computing device may calculate a target number of turns for a primary coil and a secondary coil of the transformer based on a frequency response of the transformer. The switching network may connect the inductors of the transformer together in a pattern that results in the primary coil and secondary coil having the target number of turns.

Abstract translation: 提供了一种用于调谐变压器的系统和方法。 变压器夹具可以将开关网络连接到变压器的多个电感器。 至少一个计算设备可以基于变压器的频率响应来计算变压器的初级线圈和次级线圈的目标匝数。 开关网络可以以导致初级线圈和次级线圈具有目标匝数的图案将变压器的电感器连接在一起。