-
公开(公告)号：US08106669B2
公开(公告)日：2012-01-31
申请号：US12240191
申请日：2008-09-29
申请人： Andre C Perras , Mark Evans
发明人： Andre C Perras , Mark Evans
IPC分类号： G01R27/08
CPC分类号： G01R27/14
摘要： A resistance testing apparatus makes use of a modular design for cascaded, parallel, bipolar current sources to obviate the need for electromechanical or pneumatic switching systems.
摘要翻译： 电阻测试装置利用用于级联，并联，双极电流源的模块化设计，以避免对机电或气动开关系统的需要。
-
公开(公告)号：US09829512B2
公开(公告)日：2017-11-28
申请号：US14518602
申请日：2014-10-20
发明人： Tomasz Barczyk
CPC分类号： G01R15/183 , G01R15/185 , G01R19/0092
摘要： Accurate measurements of electrical power at various points of a power grid is becoming more important and, at the same time, is getting more difficult as the old power distribution model of a few, large power generating stations and a multitude of relatively linear loads is replaced by a newer model containing a multitude of smaller, and to some degree unpredictable power sources, as well as a multitude of not always linear and often smart (essentially also unpredictable) loads. Embodiments of the invention provide for management of AC current measurements in the presence of a DC current. Such current measurement management including at least alarms, feedback, and forward correction techniques exploiting magnetic field measurements from within the magnetic core or upon the surface of magnetic elements and/or shields within the current transducer.
-
公开(公告)号：US09759748B2
公开(公告)日：2017-09-12
申请号：US14663580
申请日：2015-03-20
发明人： Petar Miljanic , Tomasz Barczyk
IPC分类号： G01R15/18
CPC分类号： G01R15/185
摘要： Precision AC voltage, current, phase, power and energy measurements and calibrations with current ranges from 1 uA to 20 kA and voltage ranges from 1V to 1000 kV are now performed with accuracies of better than one part per million. Continued demand for improved accuracy has led the inventors to address improvements to dual stage and multi-stage current transducers that may form the basis of the measuring process within many of the measurement instruments providing the precision AC measurements and calibrations. Additionally, the improvements to dual stage and multi-stage current transducers provide for novel feedback controlled precision AC current sources without requiring measurement of the AC current source output directly.
-
公开(公告)号：US09632164B2
公开(公告)日：2017-04-25
申请号：US14320741
申请日：2014-07-01
发明人： Mark Evans , Tomasz Barczyk , Iain Page , Kenneth Mikolajek
CPC分类号： G01R17/105 , G01R15/183 , G01R27/14 , G01R35/02
摘要： Precision AC and DC voltage, current, phase, power and energy measurements and calibrations with current ranges from 1 uA to 20 kA and voltage ranges from 1V to 1000 kV are now performed with accuracies of better than one part per million. Continued demand for improved accuracy has led the inventors to address remnant magetization within the current comparators that form the basis of the measuring process within many of the measurement instruments providing the precision AC and DC measurements and calibrations. Accordingly, the inventors present current comparator and measurement system architectures together with control protocols to provide for correction of this remnant magnetization.
-
公开(公告)号：US20160334443A1
公开(公告)日：2016-11-17
申请号：US15220058
申请日：2016-07-26
发明人： Tomasz Barczyk
CPC分类号： G01R15/183 , G01R15/185 , G01R19/0092
摘要： Accurate measurements of electrical power at various points of a power grid is becoming more important and, at the same time, is getting more difficult as the old power distribution model of a few, large power generating stations and a multitude of relatively linear loads is replaced by a newer model containing a multitude of smaller, and to some degree unpredictable power sources, as well as a multitude of not always linear and often smart (essentially also unpredictable) loads. Embodiments of the invention provide for management of AC current measurements in the presence of a DC current. Such current measurement management including at least alarms, feedback, and forward correction techniques exploiting magnetic field measurements from within the magnetic core or upon the surface of magnetic elements and/or shields within the current transducer.
摘要翻译： 电网各个电点的精确测量变得越来越重要，同时由于几个大型发电站和多个相对线性负载的旧配电模式被替换，同时变得越来越困难 通过一个更新的模型，其中包含许多较小的，在某种程度上不可预测的电源，以及许多不总是线性的，通常是智能（基本上也是不可预测的）负载。 本发明的实施例提供了在存在DC电流的情况下管理AC电流测量。 这种电流测量管理至少包括利用来自磁芯内的磁场测量或在电流传感器内的磁性元件和/或屏蔽表面上的报警，反馈和正向校正技术。
-
公开(公告)号：US09417273B2
公开(公告)日：2016-08-16
申请号：US13866433
申请日：2013-04-19
发明人： Tomasz Barczyk , Petar Miljanic , Iain Page
CPC分类号： G01R21/133 , G01R19/2513 , G01R21/06
摘要： Accurate measurements of electrical power at various points of a power grid is becoming more important and, at the same time, is getting more difficult as the old power distribution model of a few, large power generating stations and a multitude of relatively linear loads is replaced by a newer model containing a multitude of smaller, and to some degree unpredictable power sources, as well as a multitude of not always linear and often smart (essentially also unpredictable) loads. Embodiments of the invention provide for high accuracy voltage, current and power measurements of quasi-stationary and stationary waveforms in single and multiple phase power systems. Precision AC voltage, current, phase, power and energy measurements in power networks may be measured with current ranges from 1 mA to 20 kA and voltage ranges from 1V to 1000 kV and in a frequency range from a few hertz to one hundred kilohertz.
摘要翻译： 电网各个电点的精确测量正在变得越来越重要，同时，由于几个大型发电站和多个相对线性负载的旧配电模型被替换，同时变得越来越困难 通过一个更新的模型，其中包含许多较小的，在某种程度上不可预测的电源，以及许多不总是线性且通常是智能（基本上也是不可预测的）负载。 本发明的实施例提供了在单相和多相电力系统中准静态和稳态波形的高精度电压，电流和功率测量。 电力网络中的精确交流电压，电流，相位，功率和能量测量可以用电流范围从1 mA到20 kA，电压范围从1V到1000 kV，频率范围从几赫兹到一百千赫。
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.013 秒)
