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公开(公告)号：EP4446753A1
公开(公告)日：2024-10-16
申请号：EP24167661.8
申请日：2024-03-28
申请人： Fluke Corporation
摘要： Systems, apparatus, and methods that provide a flexible current sensor capable of measuring current flowing through a conductor without contacting the conductor. In various implementations, a flexible current sensor may have a comparable size, shape, and appearance as a flexible loop of a Rogowski coil, except the current sensor described herein can sense direct current (DC). The current sensors of the present disclosure utilize a novel open loop degaussing mechanism to provide accurate DC current measurements in a conductor. To achieve this, a current sensor includes an AC degaussing coil wrapped around a magnetic core. A driver circuit drives an AC degaussing signal in the AC degaussing core, which operates to reset or degauss the magnetic core, thereby providing more accurate current measurements.
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公开(公告)号：EP4435435A1
公开(公告)日：2024-09-25
申请号：EP22895505.0
申请日：2022-11-09
申请人： DENSO CORPORATION
发明人： MIYAMOTO, Ryo , SASAKI, Akito , TOKUNAGA, Kenji
IPC分类号： G01R15/20
CPC分类号： G01R15/20
摘要： A current sensor includes a bus bar (100, 200, 300), a core (110, 120, 130) having a core hole (114, 214, 314), a gap forming portion (111, 211, 311), a core lateral portion (112, 212, 312), and a core bottom portion (113, 213, 313), a detection unit (120, 220, 320) located in a gap (117, 217, 317). A magnetic permeability of the core lateral portion (112, 212, 312) is higher than a magnetic permeability of the core bottom portion (113, 213, 313).
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公开(公告)号：EP3667334B1
公开(公告)日：2024-09-11
申请号：EP19215056.3
申请日：2019-12-10
IPC分类号： G01R15/20
CPC分类号： G01R15/202 , G01R15/207 , G01R15/205
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公开(公告)号：EP4425193A1
公开(公告)日：2024-09-04
申请号：EP22884769.5
申请日：2022-08-09
发明人： TAMURA, Manabu , UEDA, Chiaki
IPC分类号： G01R15/20
CPC分类号： G01R15/20
摘要： [Object] To provide a current sensor that is superior in detection precision and has a plurality of bus bars with the suppression of error due to an adverse effect from bus bars, other than a sensing target, adjacent to a bus bar that is the sensing target for a current, a magnetic sensing unit facing the bus bar.
[Solution] In a current sensor 10 having a plurality of bus bars 11, 12, and 13 formed in a plate shape as well as magnetic sensing units 14, 15, and 16 placed so as to face the bus bars, the bus bars 11, 12, and 13 have narrow-width portions 11A, 12A, and 13A with the magnetic sensing units 14, 15, and 16 placed so as to face them, wide-width portions 11B, 12B, and 13B, and wide-width portions 11C, 12C, and 13C. The magnetic sensing unit 15 that senses the magnetic field of the bus bar 12 and the magnetic sensing unit 16 that senses the magnetic field of the bus bar 13 are placed with offsets toward opposite sides in the Y-axis direction with respect to the narrow-width portions 12A and 13B, when viewed along the Z-axis direction.-
公开(公告)号：EP4394393A1
公开(公告)日：2024-07-03
申请号：EP22217036.7
申请日：2022-12-28
发明人： HOUIS, Simon , BOURY, Bruno , RACZ, Robert
CPC分类号： G01R15/207 , G01R19/0092 , G01R33/0017 , G01R33/022 , G01R33/072 , G01R33/077 , G01R33/0206 , G01R15/202
摘要： A current sensor is provided for a target conductor, of a plurality of conductors. It includes at least one magnetic sensor configured to provide two signals representative of two different parameters of the field or a gradient thereof. It also includes a processor configured for deriving a signal indicative of the current based on a linear combination of the first signal and the at least second signal. At least one of these signals is weighted by a coefficient, being a constant chosen in accordance with a distance, in at least the first or second direction, between the sensor and at least one conductor of the plurality. The coefficient is chosen so as to reduce a contribution of a parasitic magnetic field in the signal indicative of the current in the first conductor, where the parasitic magnetic field is generated by at least a further conductor.
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公开(公告)号：EP4392791A1
公开(公告)日：2024-07-03
申请号：EP22789699.0
申请日：2022-10-10
发明人： MOHAN, Anuraag , DEIRI, Zack
IPC分类号： G01R15/20
CPC分类号： G01R15/205 , G01R15/207
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公开(公告)号：EP3682258B1
公开(公告)日：2024-06-19
申请号：EP18769619.0
申请日：2018-09-06
CPC分类号： G01R35/02 , G01R35/04 , G01R19/2509 , G01R19/32 , G01R21/133 , G01R21/14 , G01R15/207
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公开(公告)号：EP4345465A1
公开(公告)日：2024-04-03
申请号：EP22199196.1
申请日：2022-09-30
IPC分类号： G01R15/20
摘要： Beschrieben ist eine Strommesseinrichtung (4) für eine elektrische Maschine, mit einem Sensor (6), mit einem ersten Flussleitelement (9) und mit einem ersten Distanzierungselement (11), wobei das erste Distanzierungselement (11) Endbereiche des ersten Flussleitelementes (9) distanziert oder wobei das erste Distanzierungselement (11) das erste Flussleitelement (9) von einem zweiten Flussleitelement (10) distanziert. Bei einem Verfahren zur Messung eines Stromes einer elektrischen Maschine (1) wird eine beschriebene Strommesseinrichtung (4) verwendet.
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9.发明公开
公开(公告)号：EP4280277A1
公开(公告)日：2023-11-22
申请号：EP22173416.3
申请日：2022-05-16
发明人： ARENS, Andre , DE BOCK, Jens , SPITZER, Dietmar , ZHANG, Xi
摘要： A power semiconductor module arrangement comprises a housing (7), a substrate (10) comprising a substrate layer (11) and a first metallization layer (111) deposited on a first side of the substrate layer (11), and arranged inside the housing (7) or forming a bottom of the housing (7); a printed circuit board (81) arranged inside the housing (7), vertically above and in parallel to the substrate (10); a plurality of electrically conducting components arranged on the printed circuit board (81) and on the substrate (10), an encapsulant (5) at least partly filling the interior of the housing (7), thereby covering the substrate (10), and a magnetic field sensor (900) configured to detect the strength of a magnetic field; wherein either the magnetic field sensor (900) is arranged on the substrate (10) within the range of a magnetic field caused by a current flowing through one of the electrically conducting components (950) arranged on the printed circuit board (81), or the magnetic field sensor (900) is arranged on the printed circuit board (81) within the range of a magnetic field caused by a current flowing through one of the electrically conducting components (950) arranged on the substrate (10), the magnetic field sensor (900) is electrically insulated from the respective electrically conducting component (950), and the power semiconductor module arrangement further comprises evaluation means configured to determine the current flowing through the electrically conducting component (950) based on the strength of the magnetic field detected by the magnetic field sensor (900).
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公开(公告)号：EP4270018A1
公开(公告)日：2023-11-01
申请号：EP22759106.2
申请日：2022-01-06
申请人： Suncall Corporation
发明人： MUGISHIMA, Akio , MURAKAMI, Kenji
IPC分类号： G01R15/20
摘要： [Problem] To provide a current sensor that can reduce an installation area and improve measurement accuracy.
[Solution] This current sensor comprises: a busbar 2 through which current to be measured flows; and a magnetic sensor 102 that detects a magnetic field component generated by the current flowing through the busbar 2. The busbar 2 is provided with left and right through-holes 2h1, 2h2 which can change the flow of the current to be measured. The magnetic sensor 102 is mounted on the upper surface 2a of the busbar 2. In that case, the magnetic sensor 102 is screw-fixed to the upper surface 2a of the busbar 2 using the left and right through-holes 2h1, 2h2.
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