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公开(公告)号：US11913568B2
公开(公告)日：2024-02-27
申请号：US17284869
申请日：2019-10-09
发明人： Bartosz Maj , Holger Kollmann , Tomislav Milic , Alexander Schönbohm , Ralf Schröder , Marc Lenz , Marcus Bletz , Jurij Schmidt , Dieter Dinkel
CPC分类号： F16K37/0083 , B60T8/3655 , B60T8/4045 , G01R31/72 , H01F7/1844 , G01R31/2829 , H01F2007/185 , H01F2007/1861 , H01F2007/1888
摘要： A method for determining a switching state of a valve that is actuated by a coil, wherein the method includes: respectively ascertaining a current flowing through the coil and a voltage applied to the coil at several times which follow one another with a prespecified time interval, calculating an inductance variable of the coil based on the currents, the voltage and the time interval, and determining the switching state based on the inductance variable. Also disclosed is a solenoid valve assembly.
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2.发明公开公开(公告)号：US20240125840A1
公开(公告)日：2024-04-18
申请号：US17964214
申请日：2022-10-12
IPC分类号： G01R31/12 , G01R19/165 , G01R31/72
CPC分类号： G01R31/1227 , G01R19/16576 , G01R31/72
摘要： A testing system includes an AC signal generator configured to selectively generate a sinusoidal signal including a plurality of cycles. A dielectric strength and partial discharge tester sequentially performs dielectric strength and partial discharge testing of a stator of an electric machine using the sinusoidal signal. Another testing system includes an impulse signal generator configured to selectively generate an impulse signal including a plurality of cycles. A surge and partial discharge tester for sequentially performing surge and partial discharge testing of a stator of an electric machine using the impulse signal.
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公开(公告)号：US20240045000A1
公开(公告)日：2024-02-08
申请号：US18366272
申请日：2023-08-07
CPC分类号： G01R31/52 , G01R31/72 , H02P29/024
摘要： A method for detecting a short circuit in a winding of an electric motor being driven by a drive, the method includes measuring respective phase currents of the windings, transforming the phase currents to negative sequence components, and comparing the negative sequence components with respective baseline values. A corresponding control unit is further disclosed.
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4.发明授权公开(公告)号：US12025647B2
公开(公告)日：2024-07-02
申请号：US17820796
申请日：2022-08-18
发明人： Christoph Engelen , Fabian Öttl
CPC分类号： G01R31/1227 , G01R19/2503 , G01R31/72
摘要： An apparatus for locating partial discharges in a medium-voltage or high-voltage operating equipment comprises a signal detection device for detecting an electrical signal variable of the operating equipment, a filter device for low-pass filtering of the detected electrical signal variable dependent upon a filter cut-off frequency, a time detection device for detecting a signal propagation time of the low-pass-filtered electrical signal variable, and a comparison device for comparing the detected signal propagation time detected dependent upon the filter cut-off frequency with a reference propagation time for a charge pulse conducted through the operating equipment in order to determine a location of the partial discharge in the operating equipment dependent upon the result of the comparison. Also provided is a method for locating a partial discharge in medium-voltage or high-voltage operating equipment, in particular, using the apparatus.
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5.发明授权公开(公告)号：US11860208B2
公开(公告)日：2024-01-02
申请号：US17424038
申请日：2020-01-15
CPC分类号： G01R29/0892 , B60L53/124 , G01R31/72 , H02J50/10 , H02J50/60 , H04B17/26
摘要： A device tests the function of an antenna system which includes antenna units each having an antenna and a resistor and is connected between an input of a selection unit and an output of a further selection unit. A computing unit provides a control signal for the two selection units at a first output. The control signal determines which input is connected to an output of the selection unit, and which of the outputs of a further selection unit is supplied with a bias voltage present at the input of the further selection unit, and to receive the antenna signal present at the output of the selection unit at an input of the computing unit. A diagnosis circuit is connected between the output of the selection unit and a diagnosis voltage terminal. The computing unit infers a fault in the antenna system from the comparison of antenna signals.
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公开(公告)号：US20230400531A1
公开(公告)日：2023-12-14
申请号：US18252074
申请日：2020-11-06
摘要： A method for monitoring the operation of an electrical assembly having a plurality of coils disposed electrically in a parallel circuit, includes detecting, off-power, the voltage at each coil by using a tap on a winding, determining the AC component of the detected voltage for each coil, determining the mean value of the voltage at the coils, evaluating the determined AC component for each coil with respect to the determined mean voltage, while applying a weighting, and generating a signal if a weighted deviation of a value describing the AC component of a detected voltage in a coil from a value describing the mean voltage exceeds a specified limiting value. An electrical assembly and a method for operating the assembly are also provided.
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公开(公告)号：US11958369B2
公开(公告)日：2024-04-16
申请号：US17282088
申请日：2019-10-01
发明人： Urs Kalt , Andrees Beekmans , Bernhard Michel
IPC分类号： G01R31/00 , B60L53/12 , B60L53/60 , G01R31/72 , H01F38/14 , H02J7/02 , H02J50/12 , H02J50/90
CPC分类号： B60L53/12 , B60L53/60 , G01R31/006 , G01R31/72 , H01F38/14 , H02J7/02 , H02J50/12 , H02J50/90 , H02J2310/48
摘要： A method for preparing a transmission of energy to a vehicle by an inductive charging system, which has a base plate arranged on a primary side of the charging system and a secondary side arranged in or on the vehicle. A first coil is provided in the base plate and a second coil is provided on the secondary side in a vehicle plate. The method includes energizing the second coil provided on the secondary side from a vehicle-based power source and diagnosing the functionality of components arranged on the secondary side of the inductive charging system by evaluating the energization carried out on the secondary side of the inductive charging system. Also disclosed is a device for preparing a transmission of energy to a vehicle by an inductive charging system.
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公开(公告)号：US11837883B2
公开(公告)日：2023-12-05
申请号：US17153880
申请日：2021-01-21
申请人： AIRA, INC.
摘要： Systems, methods and apparatus for wireless charging are disclosed. A test apparatus has a receiving head configured to provide a measurement signal representative of electromagnetic flux received from one or more transmitting coils of a wireless charging surface, a numerically-controlled stage configured to position the receiving head at a selected point in three-dimensional space above wireless charging surface, and a processor configured to cause the numerically-controlled stage to position the receiving head at the selected point in three-dimensional space, and use the measurement signal to determine magnitude of the electromagnetic flux or power received from the wireless charging surface proximate to the selected point in three-dimensional space.
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公开(公告)号：US11762038B2
公开(公告)日：2023-09-19
申请号：US17484262
申请日：2021-09-24
CPC分类号： G01R31/52 , G01R31/34 , G01R31/346 , G01R31/42 , G01R31/72
摘要： A system and method for detecting a phase-to-ground fault in an AC electrical machine operates to receive measurements of three-phase voltages and currents provided to the AC electrical machine, compute at least one of a zero sequence component and a negative sequence component of voltage and current from the three-phase voltages and currents, and calculate a fault severity index (FSI) based on the zero or negative sequence component of voltage and current, so as to identify a phase-to-ground fault in the AC electrical machine. Calculating the FSI further includes determining a total value of the zero or negative sequence current, determining a noise-contributed value of the zero or negative sequence current included in the total value, determining a compensated value of the zero or negative sequence current based on the total value and the noise-contributed value, and calculating the FSI based on the compensated value.
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10.发明公开公开(公告)号：US20230266373A1
公开(公告)日：2023-08-24
申请号：US18002618
申请日：2021-11-05
申请人： IPERA S.R.L.
发明人： Nicola Femia , Giulia Di Capua
CPC分类号： G01R27/2611 , G01R31/40 , G01R31/72
摘要： Method for determining the behaviour of one electrical or electronic power component (2), with respect to a working limit condition, the method comprising the following operational steps: A. defining one three-dimensional mathematical space (3) of operational parameters of interest for the electrical or electronic power component (2), wherein the coordinates of an n-th point Pn of the three-dimensional mathematical space (3) correspond to specific values of the operational parameters of interest for the electrical or electronic power component (2); B. defining one exploration field (4) of the three-dimensional mathematical space, one working limit condition for the electrical or electronic power component (2) and one set R of response parameters of interest for the electrical or electronic power component (2); C. exploring, said three-dimensional mathematical space (3) by: - the generation of at least one stimulus, determined based on the coordinates of the points Pn of the three-dimensional mathematical space (3) and based on the exploration field (4), - the application of the at least one stimulus, to the at least one electrical or electronic power component (2), and - the detection of one corresponding response to the stimulus thereby applied, from the electrical or electronic power component (2), and based on the response thereby detected, determining, and storing one finite subset of points P∗n of said mathematical space (3) among the points Pn of the mathematical space (3), for which that working limit condition of that electronic power component (2) is met; and D. determining one mathematical model that analytically describes the locus of the points P∗n of that three-dimensional mathematical space (3) thereby stored, thereby obtaining the locus (5) of the operational parameters that determine a response from said electrical or electronic power component (2) that meets that working limit condition.
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