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41. 发明授权

US09720017B2 Apparatus and methods thereof for power consumption measurement at circuit breaker points 有权
公开(公告)号：US09720017B2
公开(公告)日：2017-08-01
申请号：US13924264
申请日：2013-06-21
申请人： Panoramic Power Ltd.
发明人： Adi Shamir , Dan Wijsboom , David Almagor
IPC分类号： G01R15/18 , G01R22/06 , H02M3/158 , G01R21/06 , H01F38/32 , H01F38/38
CPC分类号： G01R15/183 , G01R15/186 , G01R21/06 , G01R22/063 , H01F38/32 , H01F38/38 , H02M3/1582
摘要： Apparatus and methods are provided for the measurement of power consumption at points of interest, such as circuit breakers, machines, and the like. Accordingly, means are provided for measurement of power consumption for each electrical sub-network that is controlled by a circuit breaker. Each apparatus is enabled to communicate its respective data, in an environment of a plurality of such apparatuses, to a management unit which is enabled to provide finer granularity power consumption profiles. Challenges of measuring relatively low supply currents, wireless operation in an environment of a large number of apparatuses, and self-powering are addressed.

42. 发明授权

US09384884B2 Current transformer 有权
标题翻译：电流互感器
公开(公告)号：US09384884B2
公开(公告)日：2016-07-05
申请号：US13981930
申请日：2012-01-13
申请人： Matthew Brookes
发明人： Matthew Brookes
IPC分类号： G01R19/18 , H01F27/40 , G01R15/18 , H01F38/30 , H01F38/32 , H01F38/38 , G01R19/00 , G01R1/00 , H02M1/00 , G01M1/00
CPC分类号： H01F27/40 , G01M1/00 , G01R1/00 , G01R15/185 , G01R19/0092 , H01F38/30 , H01F38/32 , H01F38/38 , H02M1/00
摘要： A current transformer is described which comprises a housing having one or more apertures, each for receiving a primary cable or busbar, one or more magnetic cores enclosed within the housing and being positioned proximate to respective ones of the apertures so that a magnetic field is produced in a magnetic core when a primary current flows through a primary cable or busbar received through the respective aperture, and one or more secondary windings enclosed within the housing, each secondary winding being wrapped around at least a portion of a respective magnetic core so that a secondary current is induced in a secondary winding when a magnetic field is produced in the respective magnetic core. Shunt circuitry is enclosed within the housing and is connected across the secondary windings to generate a respective voltage signal for each secondary winding. A connector socket is integrally mounted to the housing for outputting the voltage signals. In this way, the labor costs incurred during installation of the current transformer can be reduced, a risk of wiring errors can be avoided, and a risk of electrocution from secondary terminals being left open-circuit is removed.
摘要翻译：描述了一种电流互感器，其包括具有一个或多个孔的壳体，每个孔用于接纳主电缆或母线，一个或多个磁芯封闭在壳体内并且定位成靠近相应的一个孔，从而产生磁场当主电流流过通过相应孔口接收的主电缆或母线以及封装在壳体内的一个或多个次级绕组时，磁芯中的每个次级绕组围绕相应磁芯的至少一部分缠绕，使得当在各个磁芯中产生磁场时，在次级绕组中感应出二次电流。分流电路封装在壳体内，并且跨越次级绕组连接以产生每个次级绕组的相应电压信号。连接器插座一体地安装到壳体以输出电压信号。以这种方式，可以减少在安装电流互感器期间产生的劳动力成本，可以避免接线错误的风险，并且除去从次级端子开路的触电危险。

43. 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。

44. 发明授权

US09035641B1 Startup circuit 有权
标题翻译：启动电路
公开(公告)号：US09035641B1
公开(公告)日：2015-05-19
申请号：US13154149
申请日：2011-06-06
申请人： Thien Le , Ping-Chen Liu
发明人： Thien Le , Ping-Chen Liu
IPC分类号： G05F3/20 , H01F38/32 , G05F3/16 , G05F3/08 , G05F3/04
CPC分类号： H01F38/32 , G05F1/468 , G05F3/04 , G05F3/08 , G05F3/16
摘要： A startup circuit to ensure a bandgap reference circuit reliably starts up or recovers from a noise disturbance is provided. The startup circuit incorporates a pull down resistor to detect the bandgap reference circuit being in a disabled state. The startup circuit creates a positive feedback loop to force the bandgap reference circuit out of a disabled state. Consequently, whenever the power supply for the bandgap reference circuit sags or if bandgap output collapses, the output of the bandgap circuit reliably ramps back up to the expected level.
摘要翻译：提供了确保带隙参考电路可靠地从噪声干扰启动或恢复的启动电路。启动电路包含一个下拉电阻，用于检测带隙参考电路处于禁用状态。启动电路创建一个正反馈回路，以迫使带隙参考电路处于禁用状态。因此，每当带隙参考电路的电源下降或带隙输出崩溃时，带隙电路的输出可靠地回升到预期的水平。

45. 发明申请

US20050001706A1 Low power cosuming current measurements for high currents 失效
标题翻译：用于高电流的低功耗电流测量
公开(公告)号：US20050001706A1
公开(公告)日：2005-01-06
申请号：US10881844
申请日：2004-06-29
申请人： Ulf Ingemar Karlsson , Erik Lindgren , Thord Gustaf Nilson
发明人： Ulf Ingemar Karlsson , Erik Lindgren , Thord Gustaf Nilson
IPC分类号： G01R15/18 , H01F27/42 , H01F38/28 , H01F38/30 , H01F38/32 , H01F27/28
CPC分类号： H01F27/427 , G01R15/185 , H01F38/28 , H01F38/30 , H01F38/32
摘要： This invention propose a way of controlling the flux density in a current transformer to keep the transformer core saturated between two consecutive measurements in a sampling measurement system. Saturation disables transformation of primary to secondary current, and thereby disables losses in the secondary circuit during this time. Both AC and DC currents are possible to measure. The use of saturation of the transformer core also permits the core to be designed physically very small. In order to get effective and accurate low power consuming measurements, both the magnetic fields originating from primary current flowing in the primary winding and external magnetic fields must be symmetrically physically spread in the transformer core. This greatly limits the possible physical arrangement of the primary winding. The invention describes a method dividing the secondary winding into two or more separate winding sections, greatly reducing this demand and permitting a asymmetrically spread magnetic field in the core without decreasing the efficiency and accuracy of the measurements.
摘要翻译：本发明提出了一种控制电流互感器中的磁通密度的方法，以便在采样测量系统中使变压器芯饱和在两个连续的测量之间。饱和度使初级电流转换为次级电流，从而在此期间禁止次级电路中的损耗。 AC和DC电流都可以测量。使用变压器磁芯的饱和度也可以使磁芯的物理设计非常小。为了获得有效和准确的低功耗测量，源自初级绕组中流动的初级电流的磁场和外部磁场必须对称地物理地扩展到变压器磁芯中。这大大限制了初级绕组的可能的物理布置。本发明描述了一种将次级绕组分成两个或更多个分离的绕组部分的方法，大大减小了该需求并且允许在芯中不对称扩展的磁场，而不降低测量的效率和精度。

46. 发明授权

US4742296A Arrangement for measuring electrical power 失效
标题翻译：电力测量装置
公开(公告)号：US4742296A
公开(公告)日：1988-05-03
申请号：US922124
申请日：1986-10-22
申请人： Jan Petr , Radivoje Popovic , Thomas Seitz
发明人： Jan Petr , Radivoje Popovic , Thomas Seitz
IPC分类号： G01R21/08 , G01R21/133 , H01F38/30 , H01F38/32
CPC分类号： H01F38/30 , G01R21/08 , G01R21/133 , H01F38/32
摘要： The present invention is an arrangement for measuring electrical power. The arrangement comprises a conductor traversed by an electrical current i and a voltage-to-current converter for transforming an electrical voltage u.sub.N into a proportional supply current i.sub.N for a Hall element. The Hall element is adapted to produce an intelligence containing output signal .+-.u.sub.H proportional to the product (.+-.i.u.sub.N) of the current i and the voltage .+-.u.sub.N. The Hall element is arranged in an air-gap of a ferromagnetic core that is excited by the current i. A voltage-to-frequency converter transforms the Hall element output voltage .+-.u.sub.H into a proportional output frequency. The voltage-to-frequency converter includes a capacitor for integration purposes and at least two signal sources. The power measuring device also includes a switch for periodically switching a signal proportional to the signal .+-.u.sub.H and for switching said signal sources to compensate for an offset voltage. Use of the arrangement permits an improvement in the ratio of the intelligence containing signal to an interference signal, which interference signal includes for example an offset voltage.
摘要翻译：本发明是用于测量电力的装置。该装置包括由电流i穿过的导体和用于将电压uN变换成用于霍尔元件的比例供应电流iN的电压 - 电流转换器。霍尔元件适于产生包含与电流i的乘积（+/- i.uN）成正比的输出信号+/- uH和电压+/- uN的智能。霍尔元件布置在由电流i激发的铁磁芯的气隙中。电压 - 频率转换器将霍尔元件输出电压+/- uH转换为比例输出频率。电压 - 频率转换器包括用于集成目的的电容器和至少两个信号源。功率测量装置还包括用于周期性地切换与信号+/- uH成比例的信号的开关，并且用于切换所述信号源以补偿偏移电压。使用这种布置允许改善智能包含信号与干扰信号的比例，该干扰信号包括例如偏移电压。

47. 发明授权

US3684955A Wideband balanced current probe 失效
标题翻译：宽带平衡电流探头
公开(公告)号：US3684955A
公开(公告)日：1972-08-15
申请号：US3684955D
申请日：1970-07-06
申请人： MARTIN MARIETTA CORP
发明人： ADAMS DUANE J
IPC分类号： H01F38/30 , H01F38/32 , G01R31/02
CPC分类号： G01R15/186 , H01F38/30 , H01F38/32
摘要： A wideband balanced current probe utilized for the detection and accurate measurement of very small currents flowing in a wire disposed in an environment involving extremely high electric and magnetic fields. My probe principally comprises a toroidal core having an electrically symmetrical bifilar wound coil disposed thereon and being protected from the high energy environment by a conductive, nonmagnetic shield. This probe provides a pair of symmetrical output signals which may be trimmed to provide even more precise electrical symmetry. The pair of symmetrical output signals is summed in phase and conveyed without contamination from the high energy field through properly balanced and shielded conductors to a relatively remote data recording unit.

48. 发明授权

US3617967A Current transformer having primary side switchable to different measuring ranges 失效
标题翻译：具有可切换到不同测量范围的主侧的电流互感器
公开(公告)号：US3617967A
公开(公告)日：1971-11-02
申请号：US3617967D
申请日：1970-04-14
申请人： ELECTROMAGNETIC IND INC
发明人： MITRACH WERNER
IPC分类号： H01F38/32 , H01F21/00
CPC分类号： H01F38/32
摘要： A current transformer has a pair of input terminals and a primary side which is switchable to different measuring ranges, the current transformer having two or four primary winding sections whose ends are connected to switching terminals disposed in a transformer head having a pair of spaced partitions. By means of the switching terminals, two primary winding sections may be connected selectively either in parallel or in series, or four primary winding sections may be connectable selectively in parallel, series-parallel, or series. The switching terminals are arranged in pairs each including a first terminal and a second terminal, with the first terminals being arranged in one or more rows on one of the partitions and the second terminals being arranged in one or more rows on the other of the partitions. Each end of each winding section is connected to a respective one of the pairs of switching terminals, including a respective first and a respective second terminal.

49. 发明授权

US3566272A Power supply system for radio transmitter and other loads on a high voltage conductor 失效
标题翻译：用于无线电发射机的电源系统和高压导体上的其他负载
公开(公告)号：US3566272A
公开(公告)日：1971-02-23
申请号：US3566272D
申请日：1968-09-17
申请人： S & C ELECTRIC CO
发明人： GOLDBACH WILLIAM R
IPC分类号： H01F27/36 , H01F38/32 , H02M5/06 , H04B15/00 , H04B1/02
CPC分类号： H04B15/00 , H01F27/367 , H01F38/32 , H02M5/06
摘要： UNWANTED RADIATION FROM THE SECONDARY WINDING OF A SINGLE TURN HIGH VOLTAGE PRIMARY WINDING TYPE OF CURRENT TRANSFORMER, EMPLOYED FOR ENERGIZING A RADIO TRANSMITTER OR OTHER LOAD MOUNTED ON A HIGH VOLTAGE CONDUCTOR FORMING THE PRIMARY WINDING, IS PREVENTED BY USING THE FULL NUMBER OF TURNS OF THE SECONDARY WINDING WHICH IS WOULD IN COAXIAL LAYERS WITH ALTERNATE LAYERS CONNECTED IN SERIES. A TWISTED PAIR OF SHIELDED CONDUCTORS INTERCONNECTS THE SECONDARY WINDING AND A PREREGULATOR THAT, IN TURN, IS CONNECTED BY A TWISTED PAIR OF SHIELDED CONDUCTORS, THE SHIELD OF WHICH IS CONNECTED TO A COMMON CIRCUIT CONNECTION, TO A SERIES REGULATOR WHICH ENERGIZES THE TRANSMITTER OR OTHER LOAD ON OPERATION OF A VOLTAGE CONTROLLED RELAY OR TRANSISTOR SWITCHING CIRCUIT. DUAL SECONDARY WINDINGS AND CONNECTIONS TAKE CARE OF THE LIKELIHOOD OF EXCEEDING THE INPUT VOLTAGE LIMITS DUE TO PLURAL LOADS EMPLOYING A SERIES REGULATOR FOR EACH LOAD. TEMPERATURE COMPENSATED RELAYS ALSO PROVIDE A SYSTEM FOR ENERGIZING THE TRANSMITTER OR OTHER LOADING FROM THE SECONDARY WINDING WHICH CAN MAKE USE OF THE SERIES CONNOTED COAXIAL LAYER WOULD COIL CONSTRUCTION WITH THE SHIELDED TWISTED PAIRS OF CONDUCTORS. IN LIEU OF THE RELAYS, A TRANSISTORIZED SWITCHING CIRCUIT IS USED. PROVISION IS MADE FOR CHARGING A BATTERY TO MAINTAIN THE TRANSMITTER OR OTHER LOAD IN OPERATION WHEN THE CURRENT FLOW IN THE HIGH VOLTAGE CONDUCTOR FALLS BELOW A PREDETERMINED VALUE.

50. 发明授权

US2467807A Electric induction apparatus 失效
公开(公告)号：US2467807A
公开(公告)日：1949-04-19
申请号：US56583244
申请日：1944-11-30
申请人： GEN ELECTRIC
发明人： GUGLIELMO CAMILLI , ARAM BOYAJIAN
IPC分类号： H01F27/42 , H01F38/32
CPC分类号： H01F27/427 , H01F38/32

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