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1. 发明申请

US20180095112A1 Current-Measuring Device And Method For Determining An Electric Current 审中-公开
公开(公告)号：US20180095112A1
公开(公告)日：2018-04-05
申请号：US15563735
申请日：2016-03-30
申请人： Siemens Aktiengesellschaft
发明人： Roland Weiss
IPC分类号： G01R15/18 , G01R15/20 , G01R33/07
CPC分类号： G01R15/185 , G01R15/181 , G01R15/202 , G01R15/205 , G01R15/207 , G01R33/07 , H01F27/427
摘要： The present disclosure relates to electrical conductors. The teachings herein may be embodied a current-measuring devices and/or methods for determining an electric current in an electrical conductor. For example, a method for determining a magnitude of an electric current in an electrical conductor may include: measuring output signals from a plurality of magnetic-field sensors arrayed around the electrical conductor; setting a compensation current through a compensation coil surrounding the plurality of magnetic-field sensors based on detected output variables of the magnetic-field sensors; and determining the magnitude of the electric current through the electrical conductor based on the set compensation current through the compensation coil.

2. 发明申请

US20180059148A1 CURRENT SENSOR 审中-公开
公开(公告)号：US20180059148A1
公开(公告)日：2018-03-01
申请号：US15805616
申请日：2017-11-07
申请人： Allegro MicroSystems, LLC
发明人： Dominik Geisler , Shaun D. Milano
IPC分类号： G01R15/20 , G01R31/36 , G01R33/07
CPC分类号： G01R15/202 , G01R15/183 , G01R15/185 , G01R15/186 , G01R15/20 , G01R15/205 , G01R15/207 , G01R31/3606 , G01R33/07 , G01R33/072 , G01R33/098
摘要： A current sensor includes a ferromagnetic core having a substantially central opening for receiving a current conductor and a gap. A detector of the current sensor includes at least one first magnetic field sensing element disposed in a first gap portion and configured to generate a respective first magnetic field signal in response to a first magnetic field having a first angle with respect to the at least one first magnetic field sensing element. The detector also includes at least one second magnetic field sensing element disposed in a second gap portion and configured to generate a respective second magnetic field signal in response to a second magnetic field having a second angle with respect to the at least one second magnetic field sensing element. The first and second magnetic fields are substantially equal in magnitude and the first and second angles are substantially opposite in polarity.

3. 发明授权

US09841441B2 Electrical current transducer 有权
公开(公告)号：US09841441B2
公开(公告)日：2017-12-12
申请号：US14931756
申请日：2015-11-03
申请人： LEM Intellectual Property SA
发明人： Stéphane Claeys
IPC分类号： G01R15/18 , H01F27/26 , H01F27/30 , H01F27/32 , H01F38/30
CPC分类号： G01R15/183 , G01R15/185 , H01F27/266 , H01F27/306 , H01F27/325 , H01F38/30 , H01F2038/305
摘要： Electrical current transducer including a magnetic core comprising a magnetic circuit gap, a magnetic field detector comprising a sensing portion positioned in the magnetic circuit gap, an insulating support body comprising a coil support portion and a coil terminal connection portion, and a secondary coil formed from a wire wound around the coil support portion. The coil support portion has a generally U-shaped cross-sectional profile comprising a base wall, a radially inner wall extending from the base wall and a radially outer wall extending from the base wall, the radially inner and outer walls having a height configured such that open end edges thereof extend slightly beyond an axial thickness of the magnetic core including any manufacturing tolerances such that the open end edges are folded inwards around corners of the magnetic core by the coil wound around the magnetic core housing.

4. 发明授权

US09804203B2 Compensation current sensor arrangement 有权
公开(公告)号：US09804203B2
公开(公告)日：2017-10-31
申请号：US14258217
申请日：2014-04-22
申请人： Vaccumschmelze GmbH & Co. KG
发明人： Friedrich Lenhard
IPC分类号： G01R33/02 , G01R19/00 , G01R15/18
CPC分类号： G01R19/0092 , G01R15/185 , G01R33/02
摘要： The current sensor arrangement according to the compensation principle has a primary conductor, designed to generate a primary magnetic field dependent on a current to be measured flowing through it, a first secondary winding, designed to generate a first secondary magnetic field dependent on a first compensation current flowing through said winding, a second secondary winding designed to generate a second secondary magnetic field dependent on a second compensation current flowing through said winding, a magnetic field sensor designed to generate a measurement signal that represents a magnetic field detected by it; a magnetic core of soft magnetic material designed and arranged to magnetically interconnect a primary conductor, a first seconding winding, a second secondary winding, and a magnetic field sensor; a first evaluation circuit, downstream from the magnetic field sensor and upstream from the first secondary winding, and a second evaluation circuit, upstream from the second secondary winding.

5. 发明申请

US20170219633A1 Self-Shielded Di/Dt Transformer for a Meter 审中-公开
公开(公告)号：US20170219633A1
公开(公告)日：2017-08-03
申请号：US15484952
申请日：2017-04-11
申请人： Landis+Gyr Inc.
发明人： Frank J. Boudreau , Matthew E. Kraus
IPC分类号： G01R15/18
CPC分类号： G01R15/185 , G01R15/181
摘要： A sensor includes a core, first and second windings, an integrating amplifier circuit and a DC stabilization circuit. The first and second windings are wrapped around the core. The integrating amplifier circuit has a first input coupled to receive a sensed current from the first winding, and an output operably coupled to provide a current the second winding. The integrating amplifier circuit is configured to generate a phase shift from an input current received at the first input and the current provided to the second winding. The DC stabilization circuit includes a first resistive path coupled between the output of the integrating amplifier circuit and the first input of the integrating amplifier circuit, and a second resistive path coupled between the first winding and the first input of the integrating amplifier circuit.

6. 发明申请

US20170219632A1 CURRENT TRANSDUCER WITH FLUXGATE DETECTOR 审中-公开
公开(公告)号：US20170219632A1
公开(公告)日：2017-08-03
申请号：US15329648
申请日：2015-07-20
申请人： LEM INTELLECTUAL PROPERTY SA
发明人： Wolfram TEPPAN , Davide AZZONI
IPC分类号： G01R15/18 , G01R33/04
CPC分类号： G01R15/185 , G01R1/00 , G01R19/0092 , G01R33/0023 , G01R33/04 , H01F38/30 , H01F38/32 , H01F2038/305 , H01L2221/00 , H02P1/00
摘要： Electrical current transducer (2) of a closed-loop type for measuring a primary current (Ip) flowing in a primary conductor (1), comprising a fluxgate measuring head (7) and an electronic circuit (16) including a microprocessor (18) for digital signal processing. The measuring head includes a secondary coil (6) and a fluxgate detector (4) comprising an excitation coil and a magnetic material core. The electronic circuit comprises an excitation coil drive circuit (14) configured to generate an alternating excitation voltage to supply the excitation coil with an alternating excitation current (Ifx), the secondary coil (6) connected in a feedback loop (12) of the electronic circuit to the excitation coil drive circuit (14), the electronic circuit further comprising a ripple compensation circuit (26, 28) configured to compensate for a ripple signal generated by the alternating excitation voltage.

7. 发明授权

US09494619B2 Electrical current transducer 有权
标题翻译：电流传感器
公开(公告)号：US09494619B2
公开(公告)日：2016-11-15
申请号：US14353941
申请日：2012-10-24
申请人： LEM Intellectual Property SA
发明人： Wolfram Teppan , Stéphane Claeys
IPC分类号： G01R33/02 , G01R33/04 , G01R15/18 , H01F38/30
CPC分类号： G01R15/18 , G01R15/185 , H01F38/30
摘要： A closed-loop current transducer comprising a magnetic circuit, a magnetic field detector, and a compensation coil assembly configured to generate a magnetic field opposing a magnetic field created by an electrical current to be measured flowing in one or more primary conductors extending through a central opening of the magnetic circuit. The magnetic circuit comprises a first branch, a second branch, and first and second end branches, interconnecting the first and second branches such that the branches surround a central passage through which the one or more primary conductors may extend, the second branch forming a receptacle that defines a cavity extending in an axial direction A for receiving a sensing portion of the magnetic field detector, the second branch comprising two second branch portions separated by an interface resulting from the bringing together of opposed ends of a single piece magnetic circuit.
摘要翻译：一种闭环电流传感器，包括磁路，磁场检测器和补偿线圈组件，其被配置为产生与被测量的电流产生的磁场相反的磁场，所述磁场在一个或多个主导体中流动，所述主要导体延伸穿过中心开路磁路。磁路包括第一分支，第二分支以及第一和第二分支，互连第一和第二分支，使得分支围绕一个或多个主导体可以延伸的中心通道，第二分支形成容器其限定在轴向方向A上延伸的腔，用于接收磁场检测器的感测部分，所述第二分支包括两个第二分支部分，所述两个第二分支部分由将单个磁路的相对端组合在一起的界面分开。

8. 发明授权

US09397484B2 Method for mounting current sensors 有权
标题翻译：安装电流传感器的方法
公开(公告)号：US09397484B2
公开(公告)日：2016-07-19
申请号：US12939828
申请日：2010-11-04
申请人： Jerald R. Woodbury
发明人： Jerald R. Woodbury
IPC分类号： H02B1/04 , G01R15/18 , G01R11/04 , H02B1/044 , H02B3/00 , G01R21/06 , H02B1/015 , H02B1/03 , H02G3/08 , H02B1/048 , H01H9/22 , H01H9/26 , H01H11/00
CPC分类号： H02B1/04 , G01R11/04 , G01R15/18 , G01R15/181 , G01R15/185 , G01R21/06 , H01H9/22 , H01H9/26 , H01H11/00 , H01H11/0031 , H02B1/015 , H02B1/03 , H02B1/044 , H02B1/048 , H02B3/00 , H02G3/086 , H02G3/088 , Y10T29/49002 , Y10T29/49004 , Y10T29/4902 , Y10T29/49126 , Y10T29/49826 , Y10T29/49947 , Y10T29/49948 , Y10T29/49963
摘要： A plurality of current sensors on a support is attached to bracket which is secured in an electric power distribution panel.
摘要翻译：支撑件上的多个电流传感器附接到固定在电力配电盘中的支架。

9. 发明授权

US09234918B2 Closed-loop current transducer with switched mode amplifier 有权
标题翻译：带开关模式放大器的闭环电流传感器
公开(公告)号：US09234918B2
公开(公告)日：2016-01-12
申请号：US13876413
申请日：2011-09-20
申请人： Marc Schaerrer
发明人： Marc Schaerrer
IPC分类号： G01R15/20 , G01R15/18
CPC分类号： G01R15/202 , G01R15/185
摘要： A closed-loop current transducer for measuring a current (Ip) flowing in a primary conductor, the transducer powered by series connected voltage supplies (V_H, V_L) and comprising a magnetic field detector, a signal processing circuit including an amplifier circuit connected to the magnetic field detector, and a compensation coil (WS1) connected to the amplifier circuit and configured to generate an opposing magnetic field seeking to cancel a magnetic field generated by the current flowing in the primary conductor. The amplifier circuit comprises a first switched mode power stage configured to drive the magnetic field generator, and a second switched mode power stage configured to balance the currents of the voltage supplies.
摘要翻译：一种用于测量在主导体中流动的电流（Ip）的闭环电流传感器，所述换能器由串联电压源（V_H，V_L）供电并且包括磁场检测器，信号处理电路包括连接到所述第一导体的放大器电路磁场检测器和补偿线圈（WS1），其连接到放大器电路并且被配置为产生寻求消除由在主导体中流动的电流产生的磁场的相反磁场。放大器电路包括被配置为驱动磁场发生器的第一开关模式功率级和被配置为平衡电压源的电流的第二开关模式功率级。

10. 发明授权

US09217763B2 Mixed mode fluxgate current transducer 有权
标题翻译：混合模式磁通门电流传感器
公开(公告)号：US09217763B2
公开(公告)日：2015-12-22
申请号：US13389779
申请日：2010-08-10
申请人： Wolfram Teppan , Hiroshi Obata , Yori Hatakeyama
发明人： Wolfram Teppan , Hiroshi Obata , Yori Hatakeyama
IPC分类号： G01R1/22 , G01R19/20 , G01R15/18
CPC分类号： G01R19/20 , G01R15/185
摘要： Electrical current transducer 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 measure a mean value of the excitation current in the secondary coil and determine therefrom a value of the primary current for small current amplitudes, the measuring circuit being further configured for evaluating the frequency 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）和用于测量在一次导体（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。测量电路被配置为测量次级线圈中的激励电流的平均值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的频率并由其确定大电流的初级电流值。

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