公开(公告)号：US20240295592A1

公开(公告)日：2024-09-05

申请号：US18591512

申请日：2024-02-29

申请人： GE Infrastructure Technology LLC

发明人： Patrice JUGE ,  Reto CHRISTEN

IPC分类号： G01R19/32 ,  G01K3/06 ,  G01K13/024 ,  G01R15/16 ,  H02B13/035

CPC分类号： G01R19/32 ,  G01K3/06 ,  G01K13/024 ,  G01R15/16 ,  H02B13/0352

摘要： A capacitive sensor having a cylindrical capacitor, for a conductor of a GIS. The capacitive sensor having at least two digital or analog temperature sensors.

公开(公告)号：US12066464B2

公开(公告)日：2024-08-20

申请号：US17937847

申请日：2022-10-04

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： Gunther A. J. Stollwerck ,  Mark Gravermann

IPC分类号： G01R15/06 ,  G01R15/16 ,  H01B17/56

CPC分类号： G01R15/16 ,  H01B17/56

摘要： A sensored insulation plug for a separable connector in a MV/HV power distribution network of a national grid, operable to sense the MV/HV elevated voltage. The sensored insulation plug includes a plug body formed by a solidified insulating material, a contact piece, and a discrete coupling capacitor embedded in the insulating material and operable to harvest energy from the elevated voltage of the contact piece and optionally operable to superimpose a communication voltage signal over the elevated voltage. The sensored insulation plug further includes an integrated sensing capacitor, operable as a high-voltage capacitor in a sensing voltage divider for sensing the elevated voltage. The sensing capacitor comprises a high-voltage electrode comprising the coupling electrode and the contact piece, a tubular sensing electrode, and a dielectric comprising a portion of the insulating material.

公开(公告)号：US12057775B2

公开(公告)日：2024-08-06

申请号：US17696422

申请日：2022-03-16

申请人： ROHM CO., LTD.

发明人： Tsutomu Ishino

IPC分类号： H02M3/158 ,  G01R15/16 ,  H02M1/00 ,  H02P27/08

CPC分类号： H02M3/1588 ,  G01R15/16 ,  H02M1/0009 ,  H02P27/08

摘要： The present disclosure provides a current detecting circuit, a synchronous rectification type DC/DC buck converter and a control circuit thereof. The current detection circuit is used with a push-pull switching circuit to detect a source current flowing in a low-side transistor. The switching circuit, (i) in a first phase, connects a first end of the capacitor to a ground line, and connects a second end of the capacitor to a switch line connecting a high-side transistor and the low-side transistor. The switching circuit, (ii) in a second phase, sets the first end of the capacitor to a high impedance, and connects a second end of the capacitor to the ground line. An output circuit has a high impedance input and outputs a current detection signal based on a voltage generated at the first end of the capacitor in the second phase.

公开(公告)号：US12019103B2

公开(公告)日：2024-06-25

申请号：US17614630

申请日：2020-05-29

申请人： DAIKIN INDUSTRIES, LTD. ,  National Institute of Advanced Industrial Science and Technology

发明人： Yuka Miyake ,  Hiroshi Dohmae ,  Akio Suzuki ,  Jun Fujimoto

IPC分类号： G01R21/06 ,  G01R15/16 ,  G01R21/133

CPC分类号： G01R21/06 ,  G01R15/16 ,  G01R21/133

摘要： A power measurement apparatus includes a voltage detector, current detector, and power calculator. The voltage detector contactlessly detects an AC voltage of a conductive path to which power is supplied from an AC power source having a magnitude of AC voltage regulated to be a predetermined value, and outputs a first data signal regarding a voltage waveform of the AC voltage of the conductive path. The current detector contactlessly detects an AC current flowing through the conductive path, and outputs a second data signal regarding a current waveform of the AC current of the conductive path. A power calculator receives the first and second data signals, and calculates active power of the conductive path from a product of a second instantaneous voltage and an instantaneous current of the current waveform indicated by the second data signal. The second instantaneous voltage is generated by converting a first instantaneous voltage.

公开(公告)号：US11988693B2

公开(公告)日：2024-05-21

申请号：US17517041

申请日：2021-11-02

申请人： Panduit Corp.

发明人： Masud Bolouri-Saransar

IPC分类号： G01R31/28 ,  G01R15/16 ,  G01R19/00 ,  G01R19/155 ,  G01R19/18

CPC分类号： G01R19/155 ,  G01R15/16 ,  G01R19/0084 ,  G01R19/18 ,  G01R31/2829

摘要： An absence of voltage indicator has an isolation circuit, an FM modulator attached to the isolation circuit, a reference oscillator, and a mixer attached to the reference oscillator and the FM modulator, wherein the output of the mixer is the difference of the two signals. In one embodiment, the FM modulator includes a variable capacitor which varies in response to a voltage in parallel to a fixed capacitor and an inductor in parallel to the capacitors.

公开(公告)号：US11867741B2

公开(公告)日：2024-01-09

申请号：US17757869

申请日：2020-12-22

申请人： SAFRAN ELECTRICAL & POWER

发明人： Lionel Cima

IPC分类号： G01R31/08 ,  G01R15/18 ,  H02H1/00 ,  H02H7/20 ,  G01R15/16 ,  G01R31/02 ,  G01R31/12

CPC分类号： G01R31/086 ,  G01R15/16 ,  G01R15/181 ,  G01R31/1272 ,  H02H1/0007 ,  H02H1/0015 ,  H02H7/20

摘要： The invention relates to a member (O1) for measuring a magnitude representative of a common mode voltage (Vres) in an electrical network (1) or in an equipment (E), the network (1) or the equipment (E) comprising at least one first power conductor (C1) and a second power conductor (C2). The measuring member (O1) comprises a sensor formed by two resistive elements (R1, R2) which are intended to be arranged in a bridge between the two power conductors (C1, C2) and have resistance values which are identical to each other. The two resistive elements (R1, R2) are connected at a midpoint (T3). The sensor also comprises a measuring dipole (SH) connected to the midpoint (T3) and to a connection terminal intended to be electrically connected to a common conductor (Cc), of which the electrical network (1) or the equipment (E) has been equipped.

公开(公告)号：US11683880B2

公开(公告)日：2023-06-20

申请号：US17250905

申请日：2019-10-16

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： Gunther A. J. Stollwerck ,  Mark Gravermann ,  Jens Weichold ,  Sebastian Eggert-Richter ,  Michael H. Stalder

IPC分类号： H05K1/02 ,  G01R1/18 ,  G01R15/16 ,  H05K1/11 ,  H05K5/06 ,  H05K9/00 ,  H05K1/18

CPC分类号： H05K1/0254 ,  G01R1/18 ,  G01R15/16 ,  H05K1/111 ,  H05K5/065 ,  H05K9/0007 ,  H05K1/181 ,  H05K2201/09163 ,  H05K2201/10015

摘要： Encapsulated PCB assembly (1) for electrical connection to a high- or medium-voltage power conductor in a power distribution network of a national grid, comprising a) a PCB (10), delimited by a peripheral edge (20) and comprising a high-tension pad (60, 62) on a voltage of at least one kilovolt, b) an electrically insulating encapsulation body (70) in surface contact with, and enveloping, the high-tension pad and at least a portion of the PCB edge adjacent to the high-tension pad, c) a shielding layer (80) on an external surface (90) of the encapsulation body and for being held on electrical ground or on a low voltage to shield at least a low-voltage portion of the PCB. The high-tension pad extends to the peripheral edge of the PCB.

公开(公告)号：US20230168284A1

公开(公告)日：2023-06-01

申请号：US17540081

申请日：2021-12-01

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Muhammad Hussain Alvi ,  Chandra S. Namuduri ,  Rashmi Prasad ,  Renato Amorim Torres

IPC分类号： G01R15/16 ,  B60L58/10 ,  B60L53/30

CPC分类号： G01R15/16 ,  B60L58/10 ,  B60L53/305 ,  B60L2210/40

摘要： A detection system for a capacitor of a power inverter of an electric vehicle includes a protection circuit including a current sensor and a power switch having a first terminal in communication with a battery system of the electric vehicle. The protection circuit is configured to selectively generate a pulse and to sense a measured current flowing through the power switch. A voltage sensor configured to sense a measured voltage across the capacitor. A controller in communication with the voltage sensor and the protection circuit is configured to estimate a capacitance value of the capacitor based on the measured current and the measured voltage.

公开(公告)号：US11644484B2

公开(公告)日：2023-05-09

申请号：US17664585

申请日：2022-05-23

申请人： G&W Electric Company

发明人： Alberto Bauer

IPC分类号： G01R15/16 ,  G01R19/00

CPC分类号： G01R15/165 ,  G01R19/0084 ,  G01R15/16 ,  G01R19/0092

摘要： A sensor assembly includes a connecting bar extending along a longitudinal axis and a tubular body extending along the longitudinal axis and at least partially surrounding the connecting bar such that the tubular body is radially spaced from the connecting bar. The tubular body includes a support member made of insulating material. The tubular body also includes a first section with an electric field sensor comprising a first layer of electrically conductive material on an inner surface of the support member to detect an electric field produced by the connecting bar. The first section also includes a first electric screen comprising a second layer of electrically conductive material on an outer surface of the support member to shield the electric field sensor from outside electrical interference. A second section disposed adjacent the first section includes a second electric screen. A dielectric material at least partially encloses the tubular body.

公开(公告)号：US20230127522A1

公开(公告)日：2023-04-27

申请号：US17910362

申请日：2021-02-22

申请人： NIDEC READ CORPORATION

发明人： Masahiro KAWAGUCHI

IPC分类号： G01R15/16 ,  G01R1/04 ,  G01R1/067 ,  G01R19/00

摘要： A clamp-type AC voltage probe includes: a clamp portion that clamps a cable to be measured; an electrode disposed to be opposed to the cable clamped by the clamp portion; a parallel circuit in which a capacitor and a resistance are connected in parallel, and one end of which is connected to the electrode; a resistance one end of which is connected to the other end of the parallel circuit and the other end of which is connected to a circuit ground; a capacitor one end of which is connected to the other end of the parallel circuit and the other end of which is connected to the circuit ground; and an amplifier an input terminal of which is connected to the one end or the other end of the parallel circuit, and that amplifies and outputs a signal input into the input terminal.