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    Current Sensor
    21.
    发明申请
    Current Sensor 有权
    电流传感器

    公开(公告)号：US20120314332A1

    公开(公告)日：2012-12-13

    申请号：US13158235

    申请日：2011-06-10

    申请人： Jeffrey Michael Fries ,  Jeffery Armstrong ,  Robert N. Bettis ,  Bradley Dale Brown ,  Shawn T. Clark ,  Gregory K. Hann ,  Mark Kraeling ,  Steve R. Murphy ,  Daniel G. Penny, III ,  Eric Vorndran

    发明人： Jeffrey Michael Fries ,  Jeffery Armstrong ,  Robert N. Bettis ,  Bradley Dale Brown ,  Shawn T. Clark ,  Gregory K. Hann ,  Mark Kraeling ,  Steve R. Murphy ,  Daniel G. Penny, III ,  Eric Vorndran

    IPC分类号： H01H47/00 ,  G01R15/20

    CPC分类号： G01R15/185 ,  G01R19/20

    摘要： There is provided a voltage or current sensing device. An exemplary voltage or current sensing device includes a drive circuitry configured to deliver a drive current to a magnetic core operably coupled with a conductor, for driving the core to cyclical magnetic saturation. The device also includes sense circuitry configured to receive a voltage signal corresponding to an application current in the conductor. The device also includes signal processing circuitry configured to sample the voltage signal, wherein a first sample is in phase with the drive current and a second sample is out of phase with the drive current. The device also includes a feedback loop configured to deliver a compensation current to the magnetic core, wherein the compensation current is configured to balance the magnetic core and wherein the compensation current is based at least in part on the first sample in phase with the drive current.

    摘要翻译： 提供了电压或电流检测装置。 示例性电压或电流感测装置包括驱动电路，其被配置为将驱动电流传送到与导体可操作地耦合的磁芯，用于驱动磁芯循环磁饱和。 该装置还包括被配置为接收对应于导体中的施加电流的电压信号的感测电路。 该装置还包括被配置为对电压信号进行采样的信号处理电路，其中第一采样与驱动电流同相，而第二采样与驱动电流异相。 该装置还包括被配置为向磁芯传送补偿电流的反馈回路，其中补偿电流被配置为平衡磁芯，并且其中补偿电流至少部分地基于与驱动电流同相的第一采样 。

    CLOSED-LOOP FLUXGATE CURRENT SENSOR
    23.
    发明申请
    CLOSED-LOOP FLUXGATE CURRENT SENSOR 有权
    闭环通流电流传感器

    公开(公告)号：US20120062209A1

    公开(公告)日：2012-03-15

    申请号：US13319916

    申请日：2010-05-10

    申请人： Wolfram Teppan ,  Davide Azzoni

    发明人： Wolfram Teppan ,  Davide Azzoni

    IPC分类号： H01F30/12

    CPC分类号： G01R33/04 ,  G01R15/185 ,  G01R19/20 ,  G01R33/0023 ,  G01R33/0035

    摘要： Electrical current sensor comprising a measuring circuit (6) and an inductor (4) for measuring a primary current IP flowing in a primary conductor (2), the inductor comprising a saturable magnetic core (10) made of a highly permeable magnetic material and a secondary coil (12) for carrying an alternating excitation i configured to alternatingly saturate the magnetic core, the coil being connected to the measuring circuit. The measuring circuit is configured to supply a positive or negative voltage to the inductor, to switch off the voltage when a condition signalling saturation is reached, to measure the time to saturation t1 in one direction and the time to saturation t2 in the other direction of the magnetic core and determine therefrom a value of the primary current for small current amplitudes, the measuring circuit being further configured for evaluating the average value of the excitation current i and determining therefrom the value of the primary current for large currents.

    摘要翻译： 电流传感器包括测量电路（6）和用于测量在主导体（2）中流动的初级电流IP的电感器（4），所述电感器包括由高度可渗透的磁性材料制成的可饱和磁芯（10） 用于承载交替激励的次级线圈（12），其被配置成交替地使所述磁芯饱和，所述线圈连接到所述测量电路。 测量电路被配置为向电感器提供正或负电压，以在达到条件信号饱和时关闭电压，以测量在一个方向上的饱和时间t1和在另一个方向上的饱和时间t2 磁芯并由此确定用于小电流幅度的初级电流的值，测量电路还被配置用于评估激励电流i的平均值，并由此确定大电流的初级电流的值。

    Measurement apparatus, test apparatus, and measurement method
    24.
    发明授权
    Measurement apparatus, test apparatus, and measurement method 失效
    测量装置，测试装置和测量方法

    公开(公告)号：US08102681B2

    公开(公告)日：2012-01-24

    申请号：US12394877

    申请日：2009-02-27

    申请人： Masakazu Ushijima

    发明人： Masakazu Ushijima

    IPC分类号： H02M3/335

    CPC分类号： H01F38/10 ,  G01R15/185 ,  H01F3/10 ,  H01F27/38 ,  H01F2038/026

    摘要： Provided is a transformer, comprising a first winding and a second winding that interlink with a main magnetic flux; and a third winding that interlinks with a magnetic flux leakage interlinking with only one of the first winding and the second winding.

    摘要翻译： 提供一种变压器，包括与主磁通相互连接的第一绕组和第二绕组; 以及第三绕组，其与仅与第一绕组和第二绕组中的一个相互连接的磁通泄漏相互连接。

    COMPACT, TWO STAGE, ZERO FLUX ELECTRONICALLY COMPENSATED CURRENT OR VOLTAGE TRANSDUCER EMPLOYING DUAL MAGNETIC CORES HAVING SUBSTANTIALLY DISSIMILAR MAGNETIC CHARACTERISTICS
    25.
    发明申请
    COMPACT, TWO STAGE, ZERO FLUX ELECTRONICALLY COMPENSATED CURRENT OR VOLTAGE TRANSDUCER EMPLOYING DUAL MAGNETIC CORES HAVING SUBSTANTIALLY DISSIMILAR MAGNETIC CHARACTERISTICS 有权
    紧凑，两级，零流量电子式补偿电流或电压转换器，采用具有特殊磁性磁特性的双磁性线

    公开(公告)号：US20110156697A1

    公开(公告)日：2011-06-30

    申请号：US12650726

    申请日：2009-12-31

    申请人： Colin N. Gunn

    发明人： Colin N. Gunn

    IPC分类号： G01R15/18 ,  G01R5/14

    CPC分类号： G01R15/183 ,  G01R15/185

    摘要： A device for sensing electrical current or voltage in an electrical distribution system using an actively compensated current ratio transformer that includes a first magnetic core having a first permeability and a second magnetic core having a second permeability higher than the first permeability. A primary winding having P turns is coupled with the first and second magnetic cores, a measurement winding having M turns is coupled with the first and second magnetic cores so that current in the primary winding induces current in the measurement winding, and a sense winding having S turns is coupled with the second magnetic core. An amplifier coupled to the sense winding receives a voltage developed across the sense winding and produces a compensation current in response to the received voltage. The amplifier has an output coupled to the sense winding to feed the compensation current through the sense winding to reduce the voltage developed across the sense winding voltage to substantially zero. A burden resistor is coupled to the measurement winding and the sense winding for receiving the sum of the current induced in the measurement winding and the compensation current.

    摘要翻译： 一种用于使用主动补偿电流比变压器来检测配电系统中的电流或电压的装置，其包括具有第一磁导率的第一磁芯和具有高于第一磁导率的第二磁导率的第二磁芯。 具有P匝的初级绕组与第一和第二磁芯耦合，具有M匝的测量绕组与第一和第二磁芯耦合，使得初级绕组中的电流在测量绕组中感应电流，并且具有 S匝与第二磁芯耦合。 耦合到感测绕组的放大器接收在感测绕组上产生的电压，并响应于接收的电压产生补偿电流。 放大器具有耦合到感测绕组的输出，以通过感测绕组馈送补偿电流，以将在感测绕组电压上产生的电压减小到基本为零。 负载电阻耦合到测量绕组和感测绕组，用于接收在测量绕组中感应的电流之和和补偿电流。

    ELECTRIC CURRENT SENSOR
    28.
    发明申请
    ELECTRIC CURRENT SENSOR 审中-公开
    电流传感器

    公开(公告)号：US20110006753A1

    公开(公告)日：2011-01-13

    申请号：US12833090

    申请日：2010-07-09

    申请人： Konghui YU ,  Masakazu Kobayashi

    发明人： Konghui YU ,  Masakazu Kobayashi

    IPC分类号： G01R19/00

    CPC分类号： G01R15/185

    摘要： An electric current sensor, including a circular magnetic material core, an excitation coil wound around the magnetic material core, a supplemental excitation coil wound around the magnetic material core, a first excitation circuit that applies an alternating excitation voltage to the excitation coil, a second excitation circuit that applies pulsed voltages synchronized with rising edges and lowering edges of the excitation voltage, the pulsed voltages causing the supplemental coil generate magnetic fields having the same directions as that of the magnetic fields generated by the excitation coil, a current-to-voltage converter that converts a current flows through the excitation coil into a voltage, and a detection unit that detects respective timings when the alternating magnetic field in the magnetic material core is saturated in a positive direction and in a negative direction.

    摘要翻译： 一种电流传感器，包括圆形磁性材料芯，缠绕在磁性材料芯上的激励线圈，缠绕在磁性材料芯上的补充激励线圈，向激励线圈施加交替激励电压的第一激励电路， 激励电路，其施加与上升沿同步的脉冲电压并降低激励电压的下降沿，引起补充线圈的脉冲电压产生与由励磁线圈产生的磁场相同方向的磁场，电流 - 电压 将电流流过励磁线圈的转换器转换为电压;以及检测单元，其检测磁性材料芯中的交变磁场在正方向和负方向上饱和时的各个定时。

    Current Sensor Assembly
    29.
    发明申请
    Current Sensor Assembly 有权
    电流传感器组件

    公开(公告)号：US20100148901A1

    公开(公告)日：2010-06-17

    申请号：US12494525

    申请日：2009-06-30

    申请人： Rodney Powell ,  Jerry Scheel ,  Randall J. Gass

    发明人： Rodney Powell ,  Jerry Scheel ,  Randall J. Gass

    IPC分类号： H01F27/06

    CPC分类号： H01F38/30 ,  G01R15/185 ,  H01F27/06 ,  H01F2027/065

    摘要： A current-sensing assembly comprising a housing and first and second current transformers contained in and fixed in position by the housing. The assembly includes at least one conducting pin corresponding to each of the first and second current transformers and inserted through the housing to expose a top end and a bottom end. The top end of the pin is electrically coupled to an end of the conducting wire of the corresponding current transformer through a window in the housing coinciding with the current transformer. The top end of a common pin is electrically coupled through the window to the opposite end of the coil conductor. The bottom end of each pin is configured to be coupled to a printed circuit board. The housing includes first and second elongated rings passing substantially through the centers of the current transformers and configured to accept first and second current lines.

    摘要翻译： 一种电流检测组件，包括壳体和容纳在壳体中并固定在适当位置的第一和第二电流互感器。 组件包括至少一个与第一和第二电流互感器中的每一个对应的导电销，并且插入穿过外壳以露出顶端和底端。 引脚的顶端通过壳体中与电流互感器重合的窗口电耦合到相应的电流互感器的导线的端部。 公共销的顶端通过窗口电耦合到线圈导体的相对端。 每个引脚的底端被配置为耦合到印刷电路板。 壳体包括基本上穿过电流互感器的中心并且被配置为接受第一和第二电流线的第一和第二细长环。

    NULLING CURRENT TRANSFORMER
    30.
    发明申请
    NULLING CURRENT TRANSFORMER 审中-公开
    空闲电流变压器

    公开(公告)号：US20100118449A1

    公开(公告)日：2010-05-13

    申请号：US12529634

    申请日：2008-02-29

    申请人： Jonathan Keith Jackson ,  Andrew Williams

    发明人： Jonathan Keith Jackson ,  Andrew Williams

    IPC分类号： H02H3/00 ,  H01F38/28 ,  G01R31/06

    CPC分类号： H02H3/33 ,  G01R15/185 ,  H02H1/0038

    摘要： This invention relates to a nulling current transformer. More particularly, this invention relates to a nulling current transformer for accurately detecting current and giving an improved response, accuracy and stability using toroidal current transformer technology along with active components. This invention finds particular application in switchgear devices such as residual current devices and metering operations. The nulling current transformer is implemented in a closed magnetic core having at least one primary winding inductively coupled thereto. A secondary winding is also inductively coupled to said magnetic core, the secondary winding being responsive to any magnetic flux generated in said magnetic core. A separate tertiary winding is also inductively coupled to said magnetic core, the tertiary winding being responsive to any magnetic flux generated in the magnetic core. A nulling means is also provided for receiving the output of said tertiary winding and nulling the received output, the nulled output of the nulling means being connected to the input of said secondary winding such that it serves to cancel the magnetic flux in the magnetic core.

    摘要翻译： 本发明涉及一种零电流互感器。 更具体地，本发明涉及一种用于精确检测电流并且使用环形电流互感器技术以及有源部件给出改进的响应，精度和稳定性的归零电流互感器。 本发明特别适用于开关设备，例如剩余电流设备和计量操作。 零电流互感器实现在具有至少一个电感耦合到其上的初级绕组的闭合磁芯中。 次级绕组也感应耦合到所述磁芯，次级绕组响应于在所述磁芯中产生的任何磁通。 单独的第三绕组也感应耦合到所述磁芯，所述第三绕组响应于在磁芯中产生的任何磁通。 还提供了一个归零装置，用于接收所述第三绕组的输出并使所接收的输出为零，所述归零装置的无效输出端连接到所述次级绕组的输入，从而用于消除磁芯中的磁通量。