Current Patents (Class 361/87)
  • Patent number: 10680428
    Abstract: An energy supply for an electrical circuit breaker includes a current converter with a primary conductor and a secondary winding. The energy supply further has a triac with two main connections and one control connection, the triac being connected electrically in parallel with the secondary winding via the main connections. A series circuit including at least two zener diodes is connected to the control connection of the triac at one end and to a main connection of the triac at the other end.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: June 9, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Michael Geissler, Michael Stehle
  • Patent number: 10581234
    Abstract: A residual current device (RCD) comprises test circuitry which issues intermittent first test pulses each simulating a residual current fault for which a corresponding fault signal is generated. In the case of a fault in which a corresponding fault signal is not received in respect of a first pulse, the RCD attempts to force the load contacts open. The test circuitry further issues intermittent second test pulses at a frequency less than that of the first test pulses, each second test pulse simulating a residual current for which a corresponding fault signal is generated. The duration of each corresponding fault signal is greater than the response time of the load contacts to allow the load contacts to open. If the test circuitry detects that the load contacts do not open, the RCD attempts to force the load contacts open.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: March 3, 2020
    Assignee: Shakira Limited
    Inventors: Alejandro Marquez, Patrick Ward
  • Patent number: 10553155
    Abstract: A current limiting circuit is used in a display device which includes a display panel having pixels each of which includes a light emitting element and a panel power source which supplies an application voltage to be applied to each of the light emitting elements included in the pixels. The current limiting circuit detects a supply current supplied from the panel power source to the display panel, and reduces the application voltage when a value of the supply current detected is greater than a threshold.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: February 4, 2020
    Assignee: JOLED INC.
    Inventors: Toshikuni Nakatani, Hirofumi Miyashita
  • Patent number: 10534041
    Abstract: The present disclosure relates to a measuring arrangement for identifying a malfunction in an energy accumulator arrangement, including a measuring device configured to measure an electrical measurement variable of the first energy accumulator and an electrical measurement variable of the further energy accumulator: a circuit arrangement having a first controllable switch configured to electrically connect the first energy accumulator to the measuring device and a further controllable switch for electrically connecting the further energy accumulator to the measuring device; and a processor device for controlling the controllable switches to capture the electrical measurement variable of the further energy accumulator.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: January 14, 2020
    Assignee: Phoenix Contact GmbH & Co. KG
    Inventors: Daniel Neumann, Eugen Mantler
  • Patent number: 10411461
    Abstract: Provided are a protection circuit for a brushless DC motor, and a control device. The protection circuit is applied to a control device for a brushless DC motor, the control device including a main control chip and a protection circuit for driving a brushless DC motor. The protection circuit includes a sampling signal input end (RNF), a first resistor (R1), a first capacitor (C1), a second capacitor (C2), a comparator (IC2) and a switching element (IC1), connected together in a preset structure.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: September 10, 2019
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Lina Yao, Weilin Guo, Wenxian Wu, Anyong Hu
  • Patent number: 10411504
    Abstract: Power over Ethernet (PoE) communication systems, control circuits and methods are presented for controlling power delivered to a powered device through a communication cable, in which a power sourcing equipment measures a supply voltage and selectively discontinues provision of power from a power source in response to a measured supply current exceeding an adaptive limit signal representing a supply current level corresponding to a predetermined safe operating power level at the measured supply voltage.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: September 10, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Jean Picard, William Taylor
  • Patent number: 10374417
    Abstract: The present disclosure provides an arc-free DC circuit breaker that combines magnetic induction transfer and resistive current limiting. The circuit breaker comprises a main current circuit and a transfer current circuit. The transfer current circuit has a bridge structure; with a group of unidirectional components having a breaking function, bidirectional current breaking is implemented, such that compared with the prior art, usage of the turn-off devices may be reduced to half. By controlling action sequences of the trigger gap, high-speed switch, and power semiconductor, fast switching arc-free opening of the main current circuit is implemented; meanwhile, the breaking capability of the circuit breaker is significantly improved. By virtue of the current limiting module circuit inside the transfer current circuit, the present disclosure quickly limits short-circuit fault current, and then reduces the number of parallel groups of full-controlled devices of the breaking module circuit.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: August 6, 2019
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Yi Wu, Mingzhe Rong, Yifei Wu, Fei Yang, Chunping Niu
  • Patent number: 10313138
    Abstract: The invention relates to a powered device (2) like a luminaire for being used in a power distribution system (100), which is preferentially a PoE system and which comprises a power sourcing device (1) for sourcing a power to the powered device. The powered device comprises an electrical load like an LED and an electrical load power providing unit for generating from the sourced power an electrical load power and for providing the electrical load power to the electrical load, wherein the electrical load power providing unit is adapted to generate the electrical load power with a power level such that an input current drawn by the powered device from the power sourcing device is maximized below a predefined upper input current threshold. This allows increasing the power consumption of the powered device in comparison to the power consumption of powered devices in accordance with the PoE standard IEEE 802.3at.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: June 4, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Lennart Yseboodt, Matthias Wendt
  • Patent number: 10250117
    Abstract: The present disclosure provides a converter controlling apparatus including a plurality of switching devices capable of controlling a pulse width modulation (PWM), the converter controlling apparatus including: an efficiency determiner configured to variably change resistance of a gate terminal, wherein a PWM signal for controlling the PWM of the switching device is applied to a gate terminal based on an amount of current flowing through the converter.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: April 2, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Youn Sik Lee, Dae Woo Lee, Tae Jong Ha, In Yong Yeo, Byeong Seob Song
  • Patent number: 10176940
    Abstract: A cable section detection circuit breaker and a method of control making it possible notably to automatically calibrate the circuit breaker according to the section detected. For this purpose, the circuit breaker, provided for the protection of at least one electrical line comprising at least one electrical cable, comprises: an electrical cable diameter sensor; and a data processing unit connected to the diameter sensor for receiving a value of said diameter. The processing unit is capable of verifying that the value of said diameter is greater than or equal to a limit value determined from an assigned current of said circuit breaker.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: January 8, 2019
    Assignee: Electricite de France
    Inventors: Daniel Pignier, David Menga
  • Patent number: 10144296
    Abstract: A vehicle powertrain includes a switch configured to provide a drive current to an electric machine and coupled with a diode array and a gate driver. The gate driver may be configured to, in response to a voltage across the array exceeding a threshold while providing the drive current in a presence of a turn-off request, confine operation of a resistive switch to a linear region to decrease a rate of change of the drive current proportional to the voltage.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: December 4, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Fan Xu, Shuitao Yang, Yan Zhou, Lihua Chen, Mohammed Khorshed Alam
  • Patent number: 10116130
    Abstract: A distribution board includes: a main bar that is connected to a power supply line; a branch bar that is branched from the main bar, the branch bar supplying power to a load; a breaker that is electrically connected to the branch bar, the breaker being configured to be electrically connected to the load, the breaker limiting to a predetermined set value a current to be supplied to the load; and a display unit that is provided to the branched bar or the breaker, the display unit having a display for specifying a load that is planned to be connected to the breaker.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: October 30, 2018
    Assignee: NEC CORPORATION
    Inventors: Tenda Shibuya, Syunsuke Tsuda
  • Patent number: 10107850
    Abstract: There is provided an abnormality detecting circuit. A clamp unit is configured to clamp an output voltage which is output from another device, such that the upper limit of the output voltage becomes a first clamp voltage which is generated on the basis of a constant voltage generated from a power supply voltage, or a second clamp voltage which is generated on the basis of the power supply voltage and which varies depending on the power supply voltage. A short-to-power detection unit is configured to compare the output voltage clamped by the clamp unit, with a predetermined threshold value which is generated on the basis of the power supply voltage, thereby detecting occurrence of a short to power.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: October 23, 2018
    Assignee: FUJITSU TEN LIMITED
    Inventors: Masayoshi Kume, Keisuke Kido
  • Patent number: 10050540
    Abstract: A protection circuit for a power converter is provided. The protection circuit includes a sensor circuit, a detection circuit and an initial protection circuit. The sensor circuit senses an output current of the power converter to generate a load signal. The detection circuit detects a voltage signal at a signal terminal of the connection port. The initial protection circuit compares the load signal with an initial-protection threshold. When the voltage signal at the signal terminal switches to a high level from a low level after the protection circuit is enabled, the power converter enters an initial protection mode and the initial protection circuit counts an initial period of a port-identification procedure. When the load signal is larger than the initial-protection threshold during the initial period of the port-identification procedure, the initial protection circuit generates a first protection signal to shut down the power converter.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: August 14, 2018
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Eui-Soo Kim, Jian-Ming Fu, Jui-Chien Wang, Chou-Sheng Wang, Ju-Hyun Kim, Tse-Jen Tseng
  • Patent number: 9991079
    Abstract: A circuit breaker is disclosed, including a series circuit including a measuring unit for determining the electrical current or/and voltage of the electrical circuit, an exchangeable trip unit for determining when current limit values are exceeded, and a switching unit for interrupting the electrical circuit if current limit values are exceeded. A switch characteristic module is connected to the trip unit and stores characteristic data relating to the circuit breaker. If a trip unit used is at least exchanged for a new trip unit, the characteristic data are transmitted to the new trip unit. Data specific to the trip unit are transmitted from the trip unit and are stored in the further memory area of the switch characteristic module. If a new trip unit is used, the characteristic data and the data specific to the trip unit are transmitted to the new trip unit.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: June 5, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Henry Franke, Stefan Haebel, Rainer Huentemeier
  • Patent number: 9941683
    Abstract: The device comprises at least a first part intended to detect an electrical fault occurring in a network and a second part comprising at least one switch connecting the network to a power supply source, the first part comprising at least one reflectometry detection system capable of being coupled with the network, the system detecting and analyzing the impedance changes occurring in the network, a signal being sent by the system to trigger the opening of the switch when a detected impedance change is considered by the system to be an electrical fault.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: April 10, 2018
    Assignee: WIN MS
    Inventors: Marc Olivas, Arnaud Peltier
  • Patent number: 9899830
    Abstract: The present invention discloses a method for detecting a fault and a current differential protection system thereof. The method for detecting fault includes calculating fault component currents, calculating an operate current and a restraint current of all terminals, and adjusting an operate level by adapting an operate-restraint characteristic according to a fault component. The method has very small operating area for external faults, which makes the method very reliable even for the case with serious CT saturation. A very big operating area for internal faults makes the method very sensitive for internal faults even for a heavy load and high resistance fault.
    Type: Grant
    Filed: April 7, 2013
    Date of Patent: February 20, 2018
    Assignee: ABB Schweiz AG
    Inventors: Youyi Li, Kai Liu, Ivo Brncic, Zhanpeng Shi
  • Patent number: 9899826
    Abstract: The object of the invention is a device for detecting an overcurrent, having a current meter, a first counter, and a switch, wherein the current meter measures a current through the device, with the switch being capable of interrupting a current flow through the device, wherein, if the current meter measures a current that exceeds a first current threshold, the first counter is changed by a first increment in a first direction, wherein, if the current meter measures a current that exceeds a second current threshold, the first counter is changed by a second increment in the first direction, with the second current threshold being quantitatively greater than the first current threshold, and with the second increment being quantitatively greater than the first increment, wherein, after a change in the counter, the first counter is compared with a first counter threshold, and if the counter threshold has been reached or exceeded, the switch is actuated continuously such that the current flow is interrupted, and o
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: February 20, 2018
    Assignee: PHOENIX CONTACT GMBH & CO. KG
    Inventors: Alexander Fomenko, Guido Nahles, Gerhard Woelk
  • Patent number: 9857718
    Abstract: A destaticizing brush includes a grounding member, a conductive brush member, and an adhesive tape member. The conductive brush member is bent back in a U-turn shape along an outer periphery of the grounding member in a direction in which a longitudinal direction intersects the grounding member such that the conductive brush member is in electric contact with the grounding member. An outer periphery of the conductive brush member that has been bent back and the grounding member are adhered in an integrated manner with the adhesive tape member, and at least one end of the conductive brush member is exposed from the adhesive tape member.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: January 2, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Yamamoto
  • Patent number: 9819510
    Abstract: The invention relates to a power transmission device capable of transmitting electricity supplied by an electricity source to at least one powered device connected to said transmission device by means of a communication network, via at least one data transmission cable including at least one pair of conductors, the electrical current being conveyed on the at least one pair of conductors. The power transmission device according to the invention includes, for each connected powered device, a protection device capable of tripping to protect the electricity source in case of electrical malfunction of the powered device as well as balancing of the electricity conveyed on the at least one pair of conductors, said protection device including at least one shared component contributing both to performing said trip and said balancing.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: November 14, 2017
    Assignee: THALES
    Inventors: Yves Sontag, Philippe Coni
  • Patent number: 9774243
    Abstract: An AC/DC converter receives an AC voltage at a first terminal and a second terminal. A rectifying bridge has a first input terminal coupled via a resistive element to the first terminal and a second input terminal connected to the second terminal, with output terminals of the rectifying bridge coupled to third and fourth terminals of the converter for generating a DC voltage. A first controllable rectifying thyristor couples the first terminal to the third terminal and a second controllable rectifying thyristor couples the fourth terminal to the first terminal. The resistive element functions as an inrush protection device during a first phase when the thyristors are turned off. In a second phase, the thyristors are selectively actuated.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: September 26, 2017
    Assignee: STMicroelectronics (Tours) SAS
    Inventors: Laurent Gonthier, Muriel Nina
  • Patent number: 9760142
    Abstract: In accordance with the example embodiments of the invention there is at least a method and apparatus to perform receiving, by a receiver, more than one modulated signal from each of more than one transmitter of at least one branch circuit, wherein each modulated signal includes a transmitter identification signal; based on characteristics of the more than one modulated signal, detecting at least a number of power supplies on each branch circuit and a power draw from each power supply of the number of power supplies on each branch circuit, wherein the characteristics include a power rating of each power supply of the number of power supplies; and based on the detected information, controlling at least the power draw from each power supply of the number of power supplies on each branch circuit.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: September 12, 2017
    Assignee: International Business Machines Corporation
    Inventors: Jonghyuk Choi, Jack Kouloheris, John P. Karidis
  • Patent number: 9741835
    Abstract: A transistor cell region of a semiconductor device includes transistor cells that are electrically connected to a first load electrode. An idle region includes a gate wiring structure that is electrically connected to gate electrodes of the transistor cells. A transition region, which is disposed between the transistor cell region and the idle region, includes at least one sensor cell that is electrically connected to a sense electrode. The at least one sensor cell is configured to convey a unipolar current during an on state of the transistor cells.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: August 22, 2017
    Assignee: Infineon Technologies AG
    Inventor: Andreas Riegler
  • Patent number: 9680297
    Abstract: MUs and IEDs are included. Each of the IEDs includes a signal control unit that derives the time difference between the sampling timings in the MUs on the basis of digital data from one end of a protection area and digital data from the other end of the protection area, controls the cycle of a sampling-timing control signal to eliminate this time difference, and outputs this controlled sampling-timing control signal to a merging unit corresponding to each computation unit. Each of the MUs includes a control-signal output circuit that generates a sampling signal synchronized with the sampling-timing control signal from the IEDs and outputs this sampling signal as a control signal, and a data output unit that converts an electrical input to digital data and outputs the digital data.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: June 13, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Shigetoo Oda
  • Patent number: 9667058
    Abstract: A method in a power system which includes a protected unit, such as a transmission line, adapted to convey power from a first position in the protected unit to a second position in the protected unit, or vice versa, via a plurality of conductors. A first travelling wave differential current (ITWdiff) is determined based on a comparison between a determined first travelling wave current or a second travelling wave current in first and second positions and an estimation of the first travelling wave current or the second travelling wave current, respectively. The estimation is carried out using a propagation function which takes into account any distortion, attenuation and/or delay of the waveform of a wave due to propagation of the wave in the protected unit.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 30, 2017
    Assignee: ABB SCHWEIZ AG
    Inventor: Niclas Johannesson
  • Patent number: 9620951
    Abstract: An overcurrent protection device comprises a maximum-allowed-current unit and a power switch. The maximum-allowed-current unit determines a maximum allowed current in real-time. The maximum allowed current is determined at least partially on an instantaneous level of a load voltage. The load voltage is a voltage across a load to be powered. The power switch is connectable with a switch input to a voltage supply and with a switch output to the load, for providing power to said load. The power switch has a conductive state and a nonconductive state, and is arranged to assume the nonconductive state in response to an indication that a current through the power switch is exceeding the maximum allowed current. A method of operating a power switch is also described.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: April 11, 2017
    Assignee: NXP USA, Inc.
    Inventors: Vasily Alekseyevich Syngaevskiy, Laurent Guillot, Philippe Rosado, Denis Sergeevich Shuvalov, Alexander Petrovich Soldatov
  • Patent number: 9606149
    Abstract: A method and a device for counting energization events. The device comprises a connector member for connecting to an energizable element; a sampling module coupled to the connector member, the sampling module configured to detect energization of the energizable element; a count module coupled to the sampling module, the count module configured to count a number of detected energization events of the energizable element.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: March 28, 2017
    Assignee: Schneider Electric Industries SAS
    Inventors: Rey-Anthony Carullo, Ya Chee Yeong, Yong Heng Han, Liew Yew Loung, Pan Yi Jun
  • Patent number: 9594416
    Abstract: An analog current output module includes an MPU generating and outputting a digital signal, a D/A converter converting the digital signal into an analog signal and outputting the analog signal, an analog current output circuit outputting a control current corresponding to the analog signal output from the D/A converter, and an overload detecting unit detecting whether an overload occurs by measuring the control current and comparing a value of the control current and a preset reference value, wherein the overload detecting unit sets the reference value on the basis of a reference value generating signal delivered from the MPU, and the overload detecting unit comprises a comparator comparing the control current value and the reference value and detecting whether the overload occurs, and a reference value setting unit generating the reference value according to the reference value generating signal and providing the reference value to the comparator.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: March 14, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jae Il Kwon
  • Patent number: 9527385
    Abstract: A battery power cut off system for a vehicle is provided that improves safety of the vehicle by separately detecting an overcurrent, an abnormal current, and a short current generated due to various causes while a vehicle is driven and cutting off power output from a battery. The system includes a collision sensing unit that detects an impact quantity due to a collision while the vehicle is driven and a battery sensor that detects an output current quantity of the battery. A controller analyzes the impact quantity and the output current quantity of the battery to determine whether a collision current, a short current, and an overcurrent are generated and perform a power cut off control. A switch is configured to cut off the battery power supplied to a large-capacity load element in response to a control signal of the controller.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: December 27, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Young Jong Lee
  • Patent number: 9518852
    Abstract: A wireless field device assembly comprises a process sensor, a housing, a power module, and a processor. The process sensor is configured to monitor a process variable and produce a sensor signal. The housing encloses an interior space of the wireless field device. The power module comprises an energy storage device and a connection to a local power source, and is configured to be housed in the wireless field device. The processor is located within the interior space, and is powered by the power module. The processor produces a fault signal value used to differentiate between energy storage device faults, local power source faults, and no-fault states.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: December 13, 2016
    Assignee: Rosemount Inc.
    Inventors: Chad Michael McGuire, Kelly Michael Orth, Theodore Henry Schnaare
  • Patent number: 9490748
    Abstract: A receiving device includes a dividing circuit, N pieces of internal circuits, and an averaging circuit. The dividing circuit is configured to divide an input signal into N pieces of divided signals (where N is an integer of two or larger), and the N pieces of internal circuits are configured to receive and process the N pieces of divided signals. The averaging circuit is configured to receive N pieces of output signals from the N pieces of internal circuits, averaging the output signals, and output an averaged signal.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: November 8, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Masaru Sato
  • Patent number: 9434268
    Abstract: An electric vehicle recharging station that can be readily incorporated into existing building electrical distribution systems during retrofit or new construction. The system has at least one enclosure and a vehicle charging connector. A circuit interrupter has line terminals for connection to respective first and second phases of the distribution system. A contactor relay has first and second phases coupled to the respective circuit interrupter and electric vehicle charging connector phases and separable contacts for each phase, for selective connection of electric power to the charging connector. A recharger controller is coupled to the contactor, for causing selective separation and closing of the separable contacts, so that electrical power is transferred to the electric vehicle. The recharging station system may also incorporate electric rate metering functions as well as communication capability from the controller to a remote controller. A human machine interface may be coupled to the controller.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: September 6, 2016
    Assignee: SIEMENS INDUSTRY, INC.
    Inventors: John DeBoer, Russell T. Watford, Henry Fisher, John Quentin Cowans
  • Patent number: 9431923
    Abstract: An operation area of a motor is increased without increasing the capacity of a switching element. A current limiter which limits a current flowing in switching elements to prevent the current from exceeding a predetermined current limit value is provided. A current limit value controller which decreases the current limit value if a loss generated in the switching elements increases at a same current value, and increases the current limit value if the loss decreases at a same current value, is provided.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: August 30, 2016
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshiyuki Harada, Toshiyuki Maeda
  • Patent number: 9369047
    Abstract: Methods for flyback converters are provided. The method, adopted by a flyback converter circuit including a transformer, including: determining an output voltage output from a secondary circuit of the transformer; feeding a feedback voltage based on the output voltage from the secondary circuit back to a primary circuit of the transformer; increasing a current limit and a switching frequency of a primary current with the feedback voltage; and supplying the primary current to a primary winding of the transformer.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: June 14, 2016
    Assignees: DELTA ELECTRONICS INC., POWER FOREST TECHNOLOGY CORPORATION
    Inventors: Ren-Huei Tzeng, Kuan-Sheng Wang, Wei-Chan Hsu, Chien-Chung Chang, Geu-Cheng Hu, Cheng-Yi Lin
  • Patent number: 9343901
    Abstract: A short-circuit protection circuit adapted to a voltage regulator module is provided. The voltage regulator module includes a high side transistor and a low side transistor. The short-circuit protection circuit includes a short-circuit detecting circuit, a first switch, and a second switch. The short-circuit detecting circuit includes a detecting terminal coupled with the high side transistor. The high side transistor is connected with the low side transistor and a load, and the low side transistor is coupled with a ground. The first switch is connected with the low side transistor in parallel. The second switch coupled between the high side transistor and the power supply. The first switch is turned on before the power supply is powered on, the short-circuit detecting circuit sends a detecting voltage to the high side transistor via the detecting terminal to determine whether the high side transistor is short-circuited to control to second switch.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: May 17, 2016
    Assignee: ASUSTeK COMPUTER INC.
    Inventors: Chung-Wei Kuo, Yu-Wei Hsu, Shao-Kang Chu, Chun-Yen Liu
  • Patent number: 9312687
    Abstract: The present invention discloses a control device and method for over current or short circuit protection of electronic cigarette. The control device includes an input module, a power module, a heating element, a switch control module, a comparator, and a FET; the FET is used to detect an operating voltage generated by an operating current following through the internal resistance of the FET, and the operating voltage is transmitted to the comparator; the comparator compares a reference voltage with the operating voltage, and output a potential signal to the switch control module, the switch control module turns off the FET or maintains it turning on corresponding to the potential signal, further the FET powers off or powers on the heating element. Therefore the circuit of electronic cigarette is protected in over current or short circuit condition.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: April 12, 2016
    Assignee: HUIZHOU KUMREE TECHNOLOGY CO., LTD. SHENZHEN BRANCH
    Inventor: Zhiyong Xiang
  • Patent number: 9171241
    Abstract: The power supply apparatus includes a first power supply unit for outputting a first voltage; a second power supply unit for outputting a second voltage different from the first voltage; a switch unit operating with the first voltage, which is disposed in a power supply path connecting to the second power supply unit, for supplying and shutting down power to the second power supply unit; a detection unit for detecting that a predetermined voltage or higher is supplied to the first power supply unit; and a control unit for controlling the switch unit to stop the output of the first voltage from the first power supply unit, when the detection unit detects that the predetermined voltage or higher is supplied to the first power supply unit.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: October 27, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nozomu Nakajima, Takao Kawazu
  • Patent number: 9132821
    Abstract: The present invention provides a stop lamp drive circuit and apparatus. The stop lamp drive apparatus includes a stop lamp switch, a vehicle battery, and a stop signal module. The stop lamp switch outputs a signal according to an operation state of a brake pedal in a vehicle. The vehicle battery supplies operation power of a stop lamp. In the stop signal module, an external controller outputting a signal for on/off control of the stop lamp is connected to an input thereof, and the stop lamp is directly connected to an output thereof.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: September 15, 2015
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Sung Il Kim
  • Patent number: 9136761
    Abstract: The present invention realized miniaturization of a power supply device using a multiphase system. The power supply device includes, for example, a common control unit, a plurality of PWM-equipped drive units, and a plurality of inductors. The common control unit outputs clock signals respectively different in phase to the PWM-equipped drive units. The clock signals are controllable in voltage state individually respectively. For example, the clock signal can be brought to a high impedance state. In this case, the PWM-equipped drive unit detects this high impedance state and stops its own operation. It is thus possible to set the number of phases in multiphase arbitrarily without using another enable signal or the like.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: September 15, 2015
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Ryotaro Kudo
  • Patent number: 9118181
    Abstract: The present invention is concerned with a method for faulted phase selection and fault type determination in electric power lines applicable both to series compensated and uncompensated power lines. The method comprising a fault inception detection and an estimation of fault phase current signals, pre-fault current signals and zero-sequence current in order to receive the absolute value of incremental current signals and their maximum value from which real value indicators for phase to phase faults, real value indicators for 3-phase fault and a real value indicator for ground fault are determined. The method further comprises calculating the maximum of the value of all fault type indicators (Fflt), determining the fault type, which determines the fault type on the basis that the index (flt) means the specific type of fault indicated by the value of flt; and presenting the real fault type indicator (Fmax).
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: August 25, 2015
    Assignee: ABB RESEARCH LTD
    Inventors: Przemyslaw Balcerek, Marek Fulczyk, Eugeniusz Rosolowski, Jan Izykowski, Murari Saha, Piotr Pierz
  • Patent number: 9106076
    Abstract: A method in a three-terminal differential protection includes measuring a terminal phase current (IT1(y), IT2(y), IT3(y)) at each terminal (T1, T2, T3) of a protected zone of the differential protection in each phase (L1, L2, L3) to be protected, and determining a bias current (Ib(y)) of the phase on the basis of the terminal phase currents (IT1(y), IT2(y), IT3(y)). The bias current determination includes subtracting phasor values of the terminal phase currents of two terminals from the phasor value of the terminal phase current of one terminal. The terminal phase current, which is a minuend in the phasor difference computation, is selected on the basis of the phase angles or amplitudes of the terminal phase currents.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: August 11, 2015
    Assignee: ABB TECHNOLOGY AG
    Inventors: Mika Tausa, Kari Vanhala
  • Patent number: 9093837
    Abstract: An abnormal voltage detecting device monitors abnormal decrease in monitoring voltage during a start up period of a voltage generating apparatus. The abnormal voltage detecting device comprises a level shift circuit that generates a reference voltage for a start up period by reducing, in a predetermined amount, voltage from a reference voltage for soft starting, and further comprises a three input comparator that receives a monitoring voltage, a reference voltage Vref, and the reference voltage for the start up period, and that reverses a logical output when the monitoring voltage is lower than the reference voltage Vref and the reference voltage for the start up period. An abnormality detecting signal is delivered when the logical output of the three input comparator is reversed, and operation of an output circuit is inhibited until the reference voltage for the start up period exceeds a predetermined start up determining voltage.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: July 28, 2015
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Satoshi Sugahara
  • Patent number: 9042066
    Abstract: An output stage with short-circuit protection includes a power transistor, a detecting module, a disable module, and a driving module. The power transistor is electrically connected between a voltage source and an output node. A gate end of the power transistor is configured to receive a driving signal. The detecting module is configured to detect an output voltage on the output node to determine whether a short-circuit condition occurs, and to provide a detecting signal according to the output voltage on the output node in the short-circuit condition. The disable module is configured to provide a disable signal according to the detecting signal in the short-circuit condition, and operatively stop the disable signal in each cycle period of a clock signal. The driving module is configured to determine whether to generate the driving signal according to the disable signal and the clock signal.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: May 26, 2015
    Assignee: HIMAX ANALOGIC, INC.
    Inventor: Chow-Peng Lee
  • Publication number: 20150138680
    Abstract: A first overcurrent detection unit detects whether a drain-source voltage of an output transistor is greater than or equal to a first reference value and outputs a first detection signal. A second overcurrent detection unit detects whether an output current passing through the output transistor is greater than or equal to a second reference value and outputs a second detection signal. When receiving the first detection signal indicating that the drain-source voltage is greater than or equal to the first reference value, a latch circuit latches the second detection signal; when receiving the first detection signal indicating that the drain-source voltage is smaller than the first reference value, the latch circuit outputs the second detection signal without latching it. Based on the output of the latch circuit, the drive circuit controls the output transistor to either turn it off or turn it on and off alternately.
    Type: Application
    Filed: December 16, 2014
    Publication date: May 21, 2015
    Applicant: Renesas Electronics Corporation
    Inventor: Osamu SOUMA
  • Publication number: 20150131188
    Abstract: A current sensing circuit comprises a first input terminal and a second input terminal for introducing a subject current from a device coupled between the first and second input terminals; a first amplifier having a first input node coupled to the first input terminal via a protection resistor, a second input node coupled to the second input terminal, and a first output node coupled to the first input node via a capacitor, wherein the first amplifier has a current sensing path for sensing the subject current and converting the subject current into an output voltage that changes with the subject current; and a protection circuit coupled between the first and second input nodes of the first amplifier, wherein the protection circuit is configured to draw a protection current from the first input terminal through the protection resistor to at least partially offset the subject current.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 14, 2015
    Inventors: Hong Yao, Chao Zhang, Yong Yang
  • Patent number: 9030793
    Abstract: A circuit protection device for monitoring a current flowing from an electrical distribution line through a trip mechanism to a load includes an input conductor configured to receive a current signal from a sensor. At least one resistor is arranged to receive the current signal from the input conductor, and provides a voltage signal proportional to the current signal. The circuit protection device includes a control circuit coupled in parallel with the resistor and a power supply that receives the current signal from the resistor and supplies power to the control circuit based on the current signal. The control circuit is configured to receive the voltage signal and determine an amplitude of the current flowing through the trip mechanism based on the voltage signal. The control circuit is also configured to determine whether a predetermined current threshold is exceeded and to generate a control signal to activate the trip mechanism.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: May 12, 2015
    Assignee: General Electric Company
    Inventors: Zachary Herman Cull, Craig Benjamin Williams
  • Publication number: 20150109707
    Abstract: A vehicle high voltage system may include contactors/relays, wires, a traction battery, electrical components, and at least one controller. The at least one controller may open the contactors to interrupt current flow to the components if anyone of a plurality of amp?hour measurement associated with the traction battery exceeds a corresponding predetermined threshold value.
    Type: Application
    Filed: October 18, 2013
    Publication date: April 23, 2015
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Kevin VANDER LAAN, Derek HARTL
  • Publication number: 20150098161
    Abstract: A power distribution cabinet includes a housing having walls that define an interior space for housing electric components. A capacitive sensor is located on an interior surface of one or more of the walls. The capacitive sensor includes a first conductive layer located proximate to the interior surface of the wall, a second conductive layer located distal from the interior surface of the wall, and a dielectric layer located between the first and second conductive layers. First and second output terminals are connected to the first and second conductive layers of the capacitive sensor to provide an output representative of displacement current within the power distribution cabinet.
    Type: Application
    Filed: February 25, 2014
    Publication date: April 9, 2015
    Applicant: Hamilton Sundstrand Corporation
    Inventors: John Horowy, Gary L. Galloway, Waleed M. Said, Debabrata Pal
  • Patent number: 8976499
    Abstract: An electronic fuse system includes plural current paths, each operable to be coupled between a power source and a load, and each including a switching element and a current sensing resistor in series with the path such that the path passes current when the switching element is turned on and does not pass current when the switching element is turned off. A controller has two sense inputs and a control output. The control output is coupled to the switching elements in each of the plural current paths and is operable to turn them all on or off simultaneously responsive at least in part to the sense inputs. A summing resistor is connected across the two sense inputs, and coupling circuitry is operable to couple voltages appearing across the current sensing resistors to the summing resistor.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: March 10, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kelly Pracht, Samuel M Babb
  • Publication number: 20150055260
    Abstract: A fault current limiter circuit including a fast switch fault current limiter (FSFCL) and a voltage control reactor (VCR) operative to conduct load current during a steady state operation and limit load current when the load current exceeds fault current limits. The FSFCL may include a breaker having electrical contacts, a coil electrically coupled to the electrical breaker contacts, a plunger mechanically coupled to the electrical breaker contacts, a parallel voltage control (VCR), a transient overvoltage control circuit (TOCC), wherein when current greater than a threshold level flows through the coil, a magnetic field having strength to move the plunger is generated, the movement of the plunger operates to open the contacts in the breaker and transfer fault current to VCR and TOCC and limit the overall system fault current.
    Type: Application
    Filed: August 18, 2014
    Publication date: February 26, 2015
    Inventors: Kasegn D. Tekletsadik, Charles L. Stanley