By Voltage Or Current Measuring Patents (Class 324/522)
-
Patent number: 9659114Abstract: The present invention relates to a real time dynamic physics simulation device of flexible DC transmission system. The device includes simulated converter transformer, simulated AC field, simulated DC field, simulated converter reactor, simulated converter, and measurement and control cabinet chassis; the simulated AC field includes the vacuum switch I, the contactor I, resistors and the vacuum switch II connected orderly; the simulated DC field includes successively connected the vacuum switch contactor III and II; the simulated AC field is connected with said measurement and control cabinet chassis; Said converter transformer is set between said resistors and said vacuum switch II; Said simulated converter reactors and said simulated converter connected are set between the vacuum switch II and the vacuum switch III.Type: GrantFiled: November 29, 2011Date of Patent: May 23, 2017Assignees: STATE GRID CORPORATION OF CHINA, CHINA ELECTRIC POWER RESEARCH INSTITUTEInventors: Zhiyuan He, Dong Liu, Yan Zhao, Yuefeng Yang, Renqiu Wang
-
Patent number: 9618586Abstract: A method to facilitate fault detection in the protected unit after connection to the at least a portion of the power system. A current is sensed in the protected unit during a plurality of different time periods. Compliance of at least one of the sensed currents with a respective first current criteria is determined based on a first current threshold value. On a condition that there is determined that at least one of the sensed currents comply with the respective first current criteria, a fault in the protected unit is detected.Type: GrantFiled: February 12, 2013Date of Patent: April 11, 2017Assignee: ABB Schweiz AGInventors: Reynaldo Nuqui, Jiuping Pan, Jianping Wang
-
Patent number: 9619425Abstract: An electronic control unit includes a bus connection for a connection to a bus line of a current-controlled bus, an evaluation device for sampling the current flowing through the bus connection in order to detect a digital message from a sensor which is connectable to the bus line, and a current controller for generating a predefined current pulse through the bus connection in order to induce the sensor to assume a predefined synchronization state. The current controller is set up to control the current through the bus connection in such a way that it corresponds to an operating current through the sensor.Type: GrantFiled: September 5, 2013Date of Patent: April 11, 2017Assignee: ROBERT BOSCH GMBHInventors: Massoud Momeni, Matthias Siemss
-
Patent number: 9607447Abstract: This disclosure is directed to techniques for automated transmission of surveillance incident data or other anomalous incident data from an aircraft via a preferred transmission mode. An example method includes detecting, by a processing device onboard an aircraft, an anomalous incident involving the aircraft that qualities for reporting relative to a set of anomalous incident reporting criteria. The method further includes identifying, by the processing device, data onboard the aircraft relevant to the anomalous incident. The method further includes detecting that the aircraft is in a status that makes available a selected data transmission mode for transmitting the data relevant to the anomalous incident. The method further includes communicating the data relevant to the anomalous incident to a transmission system for transmission from the aircraft via the selected data transmission mode in response to detecting that the aircraft is in the status that makes available the selected data transmission mode.Type: GrantFiled: March 31, 2015Date of Patent: March 28, 2017Assignee: Honeywell International Inc.Inventors: Scott R. Gremmert, Stephen Wilmot
-
Patent number: 9588180Abstract: A circuit, system, machine-readable storage medium and method for detecting the presence of a leakage path in a multi-cell voltage source is described. The system includes a detection circuit, the detection circuit having a first, second and third amplifiers, a first input of the first amplifier connected to a first terminal of the voltage source and the first input of the second amplifier connected to a second terminal of the voltage source, a second input of each of the first and second amplifiers connected to a reference capacitor, and an output of each of the first, second and third amplifiers connected to a respective first, second and third outputs of the detection circuit; and a processor having inputs connected to the first and second outputs of the detection circuit.Type: GrantFiled: July 13, 2012Date of Patent: March 7, 2017Assignee: ANALOG DEVICES, INC.Inventor: Lawrence C. Streit
-
Patent number: 9588168Abstract: The present disclosure relates to calculating a fault location in an electric power transmission system based on traveling waves. In one embodiment, a system consistent with the present disclosure may be configured to detect a fault in an electric power transmission system. The system may include a traveling wave detection subsystem configured to detect and measure traveling waves on a transmission line and a fault location estimation subsystem. The fault location estimation subsystem may receive from the traveling wave detection subsystem a first plurality of traveling waves on the transmission line generated during a reference event. The fault location estimation subsystem may receive from the traveling wave detection subsystem a second plurality of traveling waves generated during an unplanned event. An unmatched traveling wave in the second plurality of waves may be detected and a location of the unplanned event based on the unmatched traveling wave.Type: GrantFiled: January 23, 2015Date of Patent: March 7, 2017Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Edmund O. Schweitzer, III, Mangapathirao Venkata Mynam, Armando Guzman-Casillas
-
Patent number: 9581656Abstract: An inverter and a method for detecting a phase failure in an energy supply grid during operation of an inverter, which is connected to the energy supply grid for feeding electrical energy via a YNd transformer is disclosed. The method includes transforming the values of the output currents into a symmetrical positive-sequence current value and into a symmetrical negative-sequence current value of a coordinate system rotating at a fundamental frequency of the energy supply grid. The method further includes determining a ratio of the negative-sequence current value to the positive-sequence current value, and signalling a phase failure in the energy supply grid if the determined ratio is greater than a preset threshold value for longer than a preset time period. The disclosure furthermore relates to an inverter designed for implementing the method.Type: GrantFiled: December 19, 2014Date of Patent: February 28, 2017Assignee: SMA SOLAR TECHNOLOGY AGInventors: Christian Halt, Christian Hardt, Christoph Jordaan
-
Patent number: 9552121Abstract: A processing system for a capacitive sensing input device comprises a sensing module, a first internal diagnostic mechanism, and a determination module. The sensing module is configured to couple with a first sensor electrode path of a plurality of sensor electrode paths, and is configured to drive the first sensor electrode path with a first signal. The first internal diagnostic mechanism is configured to couple with a second sensor electrode path and to acquire a test signal output while the sensing module drives the first sensor electrode path with the first signal. The first internal diagnostic mechanism comprises a selectable current source configured to couple with the second sensor electrode path, and the selectable current source is enabled during acquisition of the test signal output. The determination module is configured to determine whether the first and second sensor electrode paths are ohmically coupled together based on the test signal output.Type: GrantFiled: June 30, 2015Date of Patent: January 24, 2017Assignee: Synaptics IncorporatedInventors: Jorge Saucedo, John M. Weinerth, Wen Fang
-
Patent number: 9541586Abstract: An apparatus for detecting an abnormal event and capturing associated waveforms includes a detection module within a power control device that detects an abnormal condition. The abnormal condition is indicative of an impending failure of the power control device and/or a condition within the power control device indicative of a parameter being outside of a specified limit. The power control device controls power to one or more power devices in a power distribution system. The apparatus includes a signal transmit module that transmits a capture signal to a transient capture meter. The transient capture meter meters transient conditions of a branch of the power distribution system that includes the power control device. The capture signal instructs the transient capture meter to capture current and/or voltage waveforms relevant to a time when the detection module detected the abnormal condition.Type: GrantFiled: November 24, 2014Date of Patent: January 10, 2017Assignee: ROCKWELL AUTOMATION TECHNOLOGIES, INC.Inventor: Richard A Morgan
-
Patent number: 9535024Abstract: A monitoring circuit for detecting degradation of a hose assembly a hose assembly and a hose assembly incorporating such a monitoring circuit are disclosed. The monitoring circuit includes a voltage source connected to a first connection location of a hose assembly. A capacitor is electrically connected between the second connection location connected to the second conductive layer of a hose assembly and a ground. The capacitor is selected such that a change in resistance of the hose assembly changes a voltage carried by the capacitor. The monitoring circuit includes a voltage sampling circuit configured to periodically detect a voltage at the capacitor. Upon detecting a change in the voltage above a predetermined threshold, the voltage sampling circuit generates an alarm indicative of potential failure.Type: GrantFiled: September 13, 2013Date of Patent: January 3, 2017Assignee: Eaton CorporationInventors: James Dean Betsinger, Nicholas Adam Burtyk
-
Patent number: 9519742Abstract: According to an embodiment, a semiconductor device switches circuit forms and circuit configurations of a plurality of analog functional circuits by rearranging a command execution order according to the command execution order set in advance irrespectively of a command execution order specified by a user and executing the commands.Type: GrantFiled: October 20, 2014Date of Patent: December 13, 2016Assignee: Renesas Electronics CorporationInventor: Yutaka Yoshizawa
-
Patent number: 9515474Abstract: Disclosed is a power off device which includes a micro arc detector for turning on a first switching element, based on a voltage induced in a high frequency choke coil by a high frequency pulse current caused by micro arc at a power line, a high current arc detector for outputting a high current arc detection current during turning-on of a second switching element made based on variation of a magnetic field generated at a coil, a delay unit for accumulatively charging the micro arc detection current or the high current arc detection current in a delay capacitor at a predetermined time constant, a power off unit for electrically disconnecting a load from the power line when an operating voltage is applied, and a first switch for connecting the operating voltage to the power off unit in response to the arc detection signal.Type: GrantFiled: May 24, 2013Date of Patent: December 6, 2016Inventors: Tae Young Chung, Dea Sang Kim
-
Patent number: 9490628Abstract: A fault current limiter is provided. According to an embodiment of the present disclosure, the fault current limiter includes a switch whose contact point is opened when a fault current occurs; a current limiting element configured to limit the fault current when the fault current occurs; and a diode being serial-connected to the current limiting element, wherein a breakdown voltage of the diode is higher than a voltage drop by an impedance of the switch when a normal current flows.Type: GrantFiled: October 30, 2014Date of Patent: November 8, 2016Assignee: LSIS CO., LTD.Inventors: Jung Wook Sim, Gyeong Ho Lee, Hae Yong Park
-
Patent number: 9482711Abstract: A method of and apparatus for fault detection utilizing a diagnostic procedure by a diagnostic device to detect a short circuit between at least two of a plurality of load electrical connections, the diagnostic procedure comprising applying a test electrical signal to each of the load electrical connections in turn and while applying the test electrical signal to a first one of the load electrical connections, detecting whether an electrical output is present, in response, on any other of the load electrical connections, wherein the detecting by the diagnostic device includes applying the test electrical signal to the first one of the load electrical connections in an operational mode of the apparatus when an electrically controlled switch connected to the first one of the load electrical connections is in an off state.Type: GrantFiled: December 2, 2013Date of Patent: November 1, 2016Assignee: FREESCALE SEMICONDUCTOR, INC.Inventors: Kamel Abouda, Stephanie Creveau-Boury, Murielle Delage, Pierre Turpin
-
Patent number: 9442153Abstract: The present invention provides a method to ensure that distributed resources of a power distribution system remain connected to the circuitry of the power distribution system when a fault occurs at a distributed resource node to assist in identifying the location of the fault by continuing to inject a direct current (DC) signal from the controllable voltage source converter of at least one DC voltage distributed resource into the distribution system and modulating an alternating current (AC) signal on top of the direct current (DC) signal.Type: GrantFiled: December 8, 2015Date of Patent: September 13, 2016Assignee: The Florida State University Research Foundation, Inc.Inventors: Passinam Tatcho, Mischa Steurer, Hui Li
-
Patent number: 9435844Abstract: Devices (10) support a use of investigation signals for investigating cable systems comprising cables (101) and loads (111). The loads (111) comprise rectifier circuits (201) coupled to storage circuits (202). The devices (10) comprise charger circuits (1) for producing charging signals for charging the storage circuits (202) such that they have reduced impacts on performances of the investigation signals. The devices (10) may further comprise discharger circuits (2) for discharging signaling circuits (121) after being charged by the charger circuits (1). The devices (10) may further comprise investigation circuits (3) for producing the investigation signals and controller circuits (4) for controlling the other circuits (1-3) and reception circuits (5) for receiving responses to the investigation signals and analysis circuits (6) for analyzing the responses in view of the investigation signals and for in response to analysis results defining a problem (102-104) and/or a location of a problem (102-104).Type: GrantFiled: June 24, 2014Date of Patent: September 6, 2016Assignee: Koninklijke Philips N.V.Inventor: Hong Chen
-
Patent number: 9423431Abstract: A method and apparatus for discriminating between electric field sources. In one embodiment, the apparatus comprises a mobile detection system comprising a sensor probe for remotely measuring an electric field generated by an electric field source in a patrolled area; and a processor, coupled to the sensor probe, for processing data received from the sensor probe to generate a first field strength and at least a second field strength for determining whether the electric field source is potentially hazardous.Type: GrantFiled: November 4, 2013Date of Patent: August 23, 2016Assignee: Power Survey LLCInventor: David Kalokitis
-
Patent number: 9417276Abstract: The present invention provides a method to ensure that distributed resources of a power distribution system remain connected to the circuitry of the power distribution system when a fault occurs at a distributed resource node to assist in identifying the location of the fault by continuing to inject current from the distributed resources into the distribution system, wherein at least one of the distributed resources is a cogeneration resource.Type: GrantFiled: December 8, 2015Date of Patent: August 16, 2016Assignee: The Florida State University Research Foundation, Inc.Inventors: Passinam Tatcho, Mischa Steurer, Hui Li
-
Patent number: 9417278Abstract: The present invention provides a system to ensure that distributed resources of a power distribution system remain connected to the circuitry of the power distribution system when a fault occurs at a distributed resource node to assist in identifying the location of the fault by continuing to inject current from the distributed resources into the distribution system, wherein at least one of the distributed resources is a solar panel.Type: GrantFiled: December 8, 2015Date of Patent: August 16, 2016Assignee: The Florida State University Research Foundation, Inc.Inventors: Passinam Tatcho, Mischa Steurer, Hui Li
-
Patent number: 9329042Abstract: The invention relates to a controller, and more particularly, to systems, devices and methods of processing multiple sensor signals of a gyroscope. The signal processor includes: a front end amplifier for converting a signal into a voltage variation signal; at least one analog-to-digital converter coupled to the front end amplifier and operative to convert an analog signal into a digital signal; and at least one demodulator coupled to the analog-to-digital converter and operative to demodulate the digital signal to thereby extract an envelope signal therefrom.Type: GrantFiled: July 29, 2013Date of Patent: May 3, 2016Assignee: Maxim Integrated Products, Inc.Inventors: Gabriele Cazzaniga, Federico Forte, Luciano Prandi
-
Patent number: 9327949Abstract: The invention relates to a jib-bracing system for a revolving tower crane, in the case of which the length of a jib (2) and the length of a bracing means (5) for the jib can each be changed. The bracing means comprises at least part of a cable (6) of which one end can be connected to the jib at at least two different fixed points (8, 9) arranged on the jib, wherein a deflecting element (7), over which the cable can be guided, is arranged on the jib, and wherein the one end of the cable can be fastened at at least one of the fixed points when the cable has been guided over the deflecting element.Type: GrantFiled: December 21, 2011Date of Patent: May 3, 2016Assignee: WOLFFKRAN HOLDING AGInventor: Ulrich Dorzbach
-
Patent number: 9322867Abstract: An electrical power supply device includes a DC voltage source with terminals, a controller, and an insulation-defect detecting device for detecting an insulation defect of the voltage source. The device has input terminals connected to source terminals, and circuits connected between respective input terminals and an intermediate point. The insulation-defect current-detection circuit connects between ground and the intermediate point. Both circuits have current-limiter circuits that open and close a connection between respective inputs and the intermediate point. Both current-limiter circuits are rated for traversal by a current of less than a standardized safety threshold when the first current-limiter circuit is closed and one of the terminals of the DC voltage source is shorted to ground. The control circuit is configured to simultaneously keep one current-limiter circuits open and the other closed.Type: GrantFiled: June 1, 2012Date of Patent: April 26, 2016Assignee: Commissariat a l'energie atomique et aux energies alternativesInventors: Daniel Chatroux, Sebastien Carcouet, Julien Dauchy
-
Patent number: 9281693Abstract: The system control apparatus for equipment for causing equipment to collaboratively operate includes: equipment profile management means for managing an equipment profile that is metadata representing the electrical properties of the equipment; control scenario management means for managing a control scenario in which is described metadata that states an operation to be fulfilled by the equipment; equipment detection means for detecting control-targeted equipment; electrical status monitoring means for monitoring an electrical status related to transfer of electrical power caused by equipment interconnections; equipment selection means for selecting equipment for use on the basis of the metadata described in the control scenario and the equipment profile; and control execution means for controlling the selected equipment.Type: GrantFiled: March 30, 2011Date of Patent: March 8, 2016Assignee: Hitachi, Ltd.Inventors: Tohru Watanabe, Yasuko Shiga, Katsumi Kawano, Shigetoshi Sameshima, Yoshiki Kakumoto, Michiki Nakano
-
Patent number: 9281792Abstract: An RFVGA variably controls a gain according to an RFVGA gain control signal and amplifies and outputs a reception signal. A low-pass filter filters a signal output from a frequency converter. An OFDM demodulator generates a digital signal based on an output signal from the low-pass filter. A power detection evaluation circuit controls the RFVGA gain control signal based on a voltage value (DET0) of the RFVGA gain control signal or a voltage value (DET1) of the output signal from the RFVGA, and a voltage value (DET3) of an output signal from the low-pass filter and a voltage value (DET2) of an intermediate node of the low-pass filter.Type: GrantFiled: September 16, 2014Date of Patent: March 8, 2016Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Naohiro Matsui
-
Patent number: 9274161Abstract: The present invention provides a method to ensure that distributed resources of a power distribution system remain connected to the circuitry of the power distribution system when a fault occurs at a distributed resource node to assist in identifying the location of the fault by continuing to inject current from the distributed resources into the distribution system. The system contains multiple power electronics based converters which convert the local direct current (DC) distributed sources (DRs) to the alternating current (AC) of the grid. The converters also provide the capability of limiting the current in the system when a fault occurs. The converters also protect the power distribution system equipment against high fault currents.Type: GrantFiled: January 28, 2014Date of Patent: March 1, 2016Assignee: The Florida State University Research Foundation, Inc.Inventors: Passinam Tatcho, Mischa Steurer, Hui Li
-
Patent number: 9258797Abstract: A local positioning system uses a power delivery network throughout a facility to easily deploy inexpensive electromagnetic receivers for capturing location fingerprints from the transmission of wireless devices. These captured fingerprints are then compared with a database of similar fingerprints compiled from a facility surveying process. Location of the wireless device is inferred from the known location corresponding to that survey-derived fingerprint that is most highly correlated with the fingerprint derived from the wireless device. The known location may then be used to provide a logical mapping of the wireless device within facility floor plans or the like.Type: GrantFiled: April 25, 2014Date of Patent: February 9, 2016Assignee: TEMEDA, LLCInventors: Stewart A. Skomra, Julian Durand
-
Patent number: 9257922Abstract: Current imbalance may be detected in a 3-phase power system by monitoring current output between two points of a phase signal provided along wire pairs from an inverter to a motor. In some embodiments, each wire of a wire pair leading to the motor from the inverter may be provided with a line current sensor. A comparison of current output from each wire in the wire pair may be performed to determine if a current imbalance is present. In some embodiments, a phase current sensor may be coupled to a phase input of the inverter. Failures in the 3-phase system may be detected by measuring the output from each phase current sensor for imbalanced distribution of power output. In some embodiments, the output from the phase current sensors may be compared to an output of a line current sensor along the same phase for current imbalances or harness failures.Type: GrantFiled: March 15, 2013Date of Patent: February 9, 2016Assignee: HONEYWELL INTERNATIONAL INC.Inventors: William Warr, Evgeni Ganev, Chiyuan Chiang
-
Patent number: 9244113Abstract: This invention concerns methods and devices for calibrating a partial discharge measuring device and for locating faults on cables. In the method, calibration signals, which can include a band-limited white noise, are used with a periodically repeated signal course. By averaging over a predetermined period duration (T) of the calibration signal, it is possible, in the case of a partial discharge measurement, to recalibrate the measuring device continuously during the measurement, and additionally on cables to determine the fault location with great precision.Type: GrantFiled: October 16, 2013Date of Patent: January 26, 2016Assignee: OMICRON ELECTRONICS GMBHInventors: Ulrich Klapper, Harald Emanuel, Caspar Steineke
-
Patent number: 9244108Abstract: A device for detecting the insulation resistance of a high-voltage battery system of a motor vehicle that includes a high-voltage battery and a high-voltage component which is operatively connected to terminals of the high-voltage battery via converters. The device includes a reference resistor operatively connected to the terminals of the high-voltage battery via switches, with a voltage measurement device configured to detect the voltage present between each respective terminal and a reference potential of the vehicle; a voltage measurement device configured to measure the voltage between the terminals; and a coupling circuit configured to monitor the high-voltage component when the contactors are open.Type: GrantFiled: September 15, 2012Date of Patent: January 26, 2016Assignee: Samsung SDI Co., Ltd.Inventors: Ingo Hausberger, Andreas Kober, Markus Lettner, Renato Mandic
-
Patent number: 9184581Abstract: A device and method for protection of an electrical apparatus against touch currents, the device configured to be connected between a source of electrical power and a device onboard a motor vehicle, and including a circuit for detecting leakage currents and for estimating touch currents, configured to be connected to the electrical connection lines of the apparatus, a circuit measuring frame current, and a mechanism controlling operation of the apparatus according to the estimated level of the touch currents and the measured level of the frame current. The device and method can in one embodiment be used to protect against leakage currents during recharging of a hybrid or electrically driven motor vehicle.Type: GrantFiled: October 14, 2011Date of Patent: November 10, 2015Assignee: RENAULT s.a.s.Inventors: Olivier Ploix, Christophe Ripoll
-
Patent number: 9170292Abstract: An insulation detection circuit suitable for detecting an insulation status between a high voltage power and a low voltage power of a vehicle is disclosed. The circuit includes a first energy storage unit, a second energy storage unit, a constant current unit, and a detection unit. The first energy storage unit is coupled to the high voltage power. The second energy storage unit is coupled between the first energy storage unit and the low voltage power. The constant current unit is coupled between the first energy storage unit and the second energy storage unit. The detection unit is coupled to the second energy storage unit for detecting a current change of the second energy storage unit. When the detection unit detects that current flowing through the second energy storage unit is smaller than a predetermined value, a detection signal representing that the insulation status is abnormal is outputted.Type: GrantFiled: March 15, 2013Date of Patent: October 27, 2015Assignee: SIMPLO TECHNOLOGY CO., LTD.Inventors: Ya-Mei Chang, Ruei-Yan Dai, Yu-Ju Lin
-
Patent number: 9160181Abstract: An energy supply system including an electrical energy storage system having multiple storage modules, in particular a battery system, an ascertaining device for ascertaining state variables of the storage modules and an energy transmission device for energy transmission between the storage modules and a downstream electrical device. It is provided that the energy transmission device has multiple d.c. chopper converters, which are connected to one another in parallel and/or in series at the output end, and each of the d.c. chopper converters is connectable to a storage module of the energy storage system, and the energy supply system has a trigger device for triggering the d.c. chopper converters as a function of the ascertained state variable of the respective connected storage module. Also described is a method for operating an energy supply system.Type: GrantFiled: October 28, 2010Date of Patent: October 13, 2015Assignee: ROBERT BOSCH GMBHInventors: Stefan Butzmann, Holger Fink
-
Patent number: 9052353Abstract: The claimed invention relates to the power industry and can be used for locating short circuits in power transmission lines by measuring the instantaneous current and voltage values when unsynchronized measurements are taken at both ends of the line. It is a technological object of the invention to improve the accuracy of damage location. The technical result of the invention is achieved by accurately synchronizing the current and voltage values measured at the ends of the line and unsynchronized in time on measurement. Synchronization is effected by aligning the oscillograms at both ends of the line with the short circuit start section.Type: GrantFiled: October 16, 2013Date of Patent: June 9, 2015Assignee: FEDERALNOYE GOSUDARSTVENNOYE BUDZHETNOYE OBRAZOVATELNOYE UCHREZHDENIE VYSSHEGO OBRAZOVANIYA “IRKUTSKI NATSIONALNY ISSLEDOVATELSKI TEHNICHESKI UNIVERSITET” (FGBOU VO “IRNITU”)Inventors: Alexandr Nikandrovich Visyaschev, Eduard Ruslanovich Plenkov, Stepan Georgievich Tiguntsev
-
Patent number: 9054703Abstract: It is an object of the invention to, in fault detection of a PWM load device, provide a fault detection device and a fault detection method, which are capable of appropriately detecting fault of the load device in the case where such load device is connected the duty ratio of the PWM waveform of which is different, or where such load device is connected the magnitude of current of which is different. The fault detection device samples a current flowing through the load device on a predetermined cycle, decides, based on sampled values, a current-driven period and decides, by using sampled values in the current-driven period, a drive current value for determining whether or not there is a fault.Type: GrantFiled: May 27, 2010Date of Patent: June 9, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Tatsushi Hiraki
-
Patent number: 9046559Abstract: An isolation monitor is disclosed in which a switchable bias voltage is imposed on a chassis ground. An isolation voltage is measured when a bias voltage is applied. When there are no electrical faults, the isolation voltage swings up and down to known values. When a fault occurs, the isolation voltage will not to swing to the known values, and thus the isolation resistance can be measured and alarm generated if the isolation resistance falls below a threshold value.Type: GrantFiled: May 9, 2012Date of Patent: June 2, 2015Assignee: CURTIS INSTRUMENTS, INC.Inventors: Ryan Lindsay, Roger White, Scott Bowman, John Cochoy
-
Patent number: 9041409Abstract: An integrated circuit structure can include a plurality of solder bumps coupled in series forming a chain and a plurality of diodes, wherein each diode is coupled to one of the plurality of solder bumps. The integrated circuit structure also can include a first pad coupled to the solder bump of the plurality of solder bumps at an end of the chain. The first pad can be configured to provide a test current responsive to application of a forward bias voltage to each diode of the plurality of diodes.Type: GrantFiled: January 11, 2012Date of Patent: May 26, 2015Assignee: XILINX, INC.Inventor: Kevin T. Look
-
Patent number: 9018958Abstract: An apparatus for measuring electrical parameters for an electrical system measures a first and second parameters of the electrical system between connections to the electrical system. A processor determines a third electrical parameter of the electrical system as a function of the first parameter and the second parameter. Wireless communication is provided between components of the apparatus.Type: GrantFiled: October 19, 2011Date of Patent: April 28, 2015Assignee: Midtronics, Inc.Inventor: Kevin I. Bertness
-
Patent number: 9013189Abstract: An electrical joint monitoring device including a mounting assembly and a wireless transponder unit. The mounting assembly includes a first conductive contact structured to electrically connect to a first conductive member of an electrical joint and a second conductive contact structured to electrically connect to a second conductive member of the electrical joint. The wireless transponder unit includes a control unit electrically connected to the first and second conductive contacts and an antenna electrically connected to the control unit. The wireless transponder unit is configured to sense a voltage difference between the first and second conductive contacts, to generate information based on the voltage difference, and to output the information to a wireless reader unit via the antenna.Type: GrantFiled: November 7, 2012Date of Patent: April 21, 2015Assignee: Eaton CorporationInventor: John J. Shea
-
Publication number: 20150102824Abstract: An electrical system includes an electrical circuit having a plurality of current paths and a plurality of switches for directing current to the plurality of current paths. A sensor senses a current or voltage in the electrical circuit. A processor connected to the sensor receives sensor data corresponding to the current or voltage in the circuit. The processor is configured to determine a location of a loose connection in the electrical circuit based on the current or voltage data and a switching sequence of the plurality of switches.Type: ApplicationFiled: October 11, 2013Publication date: April 16, 2015Applicant: General Electric CompanyInventors: Jordan Brantley Casteel, John Andrew Leonard, William Robert Pearson, Joseph Clark Rowny
-
Patent number: 9008902Abstract: A battery system for vehicle comprises a battery unit that is constituted with a plurality of serially connected cell groups each include a plurality of serially connected battery cells, integrated circuits that are each disposed in correspondence to one of the cell groups of the battery unit and each measure terminal voltages at the battery cells in the corresponding cell group, and a signal transmission path through which one of the integrated circuits is connected to another one of the integrated circuits or to a circuit other than that of the integrated circuits.Type: GrantFiled: December 2, 2013Date of Patent: April 14, 2015Assignees: Hitachi, Ltd., Hitachi Automotive Systems, Ltd.Inventors: Kenji Kubo, Akihiko Kudo, Mutsumi Kikuchi, Akihiko Emori
-
Patent number: 9007068Abstract: A method is provided for current-based detection of an electrical fault in an electrical network of a motor vehicle, the network having at least: one battery, one pulse-controlled inverter, one d.c. voltage converter, and an intermediate circuit associated with the pulse-controlled inverter. The method includes: detecting magnitudes of each a battery current, a d.c. voltage converter current, and an intermediate circuit current; comparing current magnitudes according to provided equations; and checking based on the comparison of whether a specifiable deviation has been exceeded. An alternative method for voltage-based detection of an electrical fault in an electrical network of a motor vehicle includes: detecting magnitudes of each a battery voltage, a d.c. voltage converter voltage, and an intermediate circuit voltage; comparing voltage magnitudes according to provided equations; and checking based on the comparison of whether a specifiable deviation has been exceeded.Type: GrantFiled: November 11, 2008Date of Patent: April 14, 2015Assignee: Robert Bosch GmbHInventors: Beqir Pushkolli, Ulrich Klein
-
Patent number: 9008948Abstract: A fuel injection control apparatus includes a low-side driver, arranged electrically downstream of an injector and operable to drive the injector with a changeover of an ON-OFF state thereof in response to a drive signal from a CPU; a high-side driver, arranged electrically upstream of the injector and downstream of a power source, and having an ON-OFF state thereof which may be changed in response to the drive signal from the CPU; a high-side return signal detection unit and a low-side return signal detection unit. Each of the low-side and high-side drivers includes a transistor arranged inside an ECU. The CPU diagnoses a function of a drive circuit based on the presence or non-presence of return signals received from the high-side return signal detection unit and the low-side return signal detection unit with respect to predetermined driving states of both the low-side and high-side drivers.Type: GrantFiled: January 16, 2009Date of Patent: April 14, 2015Assignee: Honda Motor Co., Ltd.Inventor: Kenichi Machida
-
Patent number: 8994361Abstract: The present invention is a finger voltage sensor that includes a base finger ring worn by a user that works near an electrical source, an electricity sensor disposed on the base finger ring, the electricity sensor detects one or more electrical fields associated with the electrical source and a warning light disposed on the base finger ring, the warning light emits a constant light when the electricity sensor is activated and is in communication with the electricity sensor. The finger voltage sensor can also include a beeper instead of a warning light and a base finger ring that includes a hook and loop fastener that is releasably attached to a user's finger.Type: GrantFiled: November 9, 2012Date of Patent: March 31, 2015Inventor: John Nuzzo
-
Patent number: 8988062Abstract: A branch circuit monitoring system (BCMS) for monitoring branch circuit currents in one or more electrical circuit panels is described. The system is comprised of a data center server, one or more panel processors, each with one or more collection devices, and one or more current sensors per collection device. The BCMS is designed to be installed entirely inside the panel without the need for a dedicated enclosure or power supply to facilitate ease of installation and low-cost. The BCMS also allows for future upgradability through standard software updates so that the system can be updated or patched easily. The BCMS data center server collects, aggregates, stores, and serves historical branch circuit current data from the panel processors to networked users via a web server to provide visualization of data such as tables, charts, and gauges.Type: GrantFiled: December 16, 2013Date of Patent: March 24, 2015Assignee: Precision Air & Energy Services, LLCInventors: Montgomery J. Sykora, Daniel L. Janovy, David L. Janovy
-
Patent number: 8988234Abstract: An alarm system for alarming whenever there is a power leakage from an electronic device, includes a voltage decreasing circuit, a switch circuit and an alarm circuit. The voltage decreasing circuit receives a first voltage from a live wire output terminal and outputs a second voltage. The switch circuit outputs a control signal when the power leakage is detected. The switch circuit is electrically connected to a connection port. The connection port is electrically connected to the live wire output terminal and a neutral wire output terminal. The alarm circuit receives the control signal and alarms. If there is power leakage from the electronic device, the first voltage from the live wire input terminal flows into the ground wire input terminal via the electronic device; the switch circuit turns on and the alarm circuit is closed to alarm.Type: GrantFiled: July 29, 2011Date of Patent: March 24, 2015Assignee: Zhongshan Innocloud Intellectual Property Services Co., Ltd.Inventor: Ke-You Hu
-
Publication number: 20150077130Abstract: The invention relates to an insulation fault locating system using branch-selective feeding and to a selective insulation monitoring system for a branched IT system composed of multiple subsystems. For insulation fault location, a differential current measuring device, a test signal generator and a blocking device are arranged in each subsystem. The insulation monitoring device additionally comprises a selective decoupling device arranged in each subsystem. Furthermore, the invention relates to a method for determining a cross impedance between two subsystems on the basis of the insulation monitoring system according to the invention.Type: ApplicationFiled: September 16, 2014Publication date: March 19, 2015Inventor: Dieter Hackl
-
Patent number: 8981785Abstract: A method and an apparatus for detecting an earth fault on a three-phase electric line are provided. The apparatus includes means for determining a neutral admittance on the basis of a residual current and a residual voltage, means for comparing the determined neutral admittance to a predetermined operation characteristic to detect an earth fault on the three-phase electric line, and means for determining one or more harmonic components of the residual current and one or more harmonic components of the residual voltage. The harmonic components have frequencies n*fn such that n?2 and fn is a fundamental frequency. The means for determining a neutral admittance are configured to use at least one of the determined one or more harmonic components of the residual current and at least one of the determined one or more harmonic components of the residual voltage for determining the neutral admittance.Type: GrantFiled: February 10, 2012Date of Patent: March 17, 2015Assignee: ABB Technology AGInventors: Ari Wahlroos, Janne Altonen
-
Patent number: 8981790Abstract: A noise current passing through a substrate on which an electronic component is mounted is suppressed in a housing, to provide a malfunction of an electronic device. A substrate (103) on which an electronic component is mounted is secured to a housing (102) by a metal spacer (108) and a screw (104). A noise control member (100) mainly composed of an insulation substance is disposed between the metal spacer (108) and the substrate (103). A first conductive film is formed on the metal spacer-side of the noise control member (100), and a second conductive film is formed on the substrate-side of the noise control member (100). A resistance member (101) is disposed between the first conductive film and the second conductive film. A noise current introduced from the housing to the substrate can be suppressed by the resistance member.Type: GrantFiled: May 26, 2010Date of Patent: March 17, 2015Assignee: Hitachi, Ltd.Inventors: Satoshi Nakamura, Takashi Suga, Yutaka Uematsu
-
Publication number: 20150070026Abstract: In this method, the voltage outage load-side is an opening of the circuit breaker, and the circuit breaker is able to interrupt the flow of electric current in an electric connection including an electric conductor. The auxiliary unit comprises a current sensor for measuring the intensity of the current flowing in the electric conductor and a first detection means for detecting the voltage outage load-side from the circuit breaker. The method comprises the following steps: measuring the intensity of the current flowing in the electric conductor, detecting the voltage outage load-side from the electric circuit breaker, determining a cause of the detected voltage outage load-side from the circuit breaker, said cause being selected from the group consisting in: an electric overload, a short-circuit and a voltage drop.Type: ApplicationFiled: September 11, 2014Publication date: March 12, 2015Applicant: Schneider Electric Industries SASInventors: Francois VINCENT, Simon Tian
-
Patent number: 8975902Abstract: Various embodiments provide systems and methods for controlling sub-system components during power disturbance events. More particularly, various embodiments provide systems and methods for preventing a controller (215) within a sub-system from turning OFF a switching device (220) during power disturbance events related to other sub-systems.Type: GrantFiled: December 9, 2008Date of Patent: March 10, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventor: Samuel M. Babb