With Specific Current Responsive Fault Sensor Patents (Class 361/93.1)
  • Patent number: 11329478
    Abstract: A power conversion system with abnormal energy protection includes a plurality of DC input power sources, a plurality of DC power converters, two output capacitors, and a protection circuit. An input side of each DC power converter is correspondingly coupled to one of the DC input power sources, and output sides of the DC power converters are coupled in parallel to each other to form a DC output bus. Two output capacitors are coupled in series between a positive voltage end and a negative voltage end of the DC output bus. The protection circuit is coupled between the DC input power sources and the two output capacitors. When one of the two output capacitors is abnormal, the protection circuit decouples the DC input power sources from the two output capacitors in a shorted-circuit manner.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: May 10, 2022
    Assignee: DELTA ELECTRONICS, INC
    Inventors: Wen-Lung Huang, Sheng-Hua Li
  • Patent number: 11316508
    Abstract: A system may include an output driving stage comprising a first switch configured to selectively open and close an electrical path between a first supply voltage and an output terminal of the output driving stage and a second switch configured to selectively open and close an electrical path between a second supply voltage and the output terminal of the output driving stage, wherein the second supply voltage is lower than the first supply voltage. The system may also include detection and protection circuitry configured to monitor a physical quantity indicative of the second supply voltage and responsive to the physical quantity exceeding an overvoltage threshold, electrically isolate the output terminal from the second supply voltage.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: April 26, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Ramin Zanbaghi, Cory J. Peterson
  • Patent number: 11303111
    Abstract: Modular circuit protection devices and configurable panelboard systems include arc-free operation, thermal management features providing safe operation in hazardous environments at lower cost and without requiring conventional explosion-proof enclosures and without entailing series connected separately provided packages such as circuit breaker devices and starter motor contactors and controls.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: April 12, 2022
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Andrew Butler, Joseph Michael Manahan, Adam Ledgerwood, Graig DeCarr
  • Patent number: 11289016
    Abstract: Discussed is a display device including a plurality of semiconductor light-emitting devices applied to sub-pixels included in each pixel of a display panel; and a driving unit for driving the plurality of semiconductor light-emitting devices on the basis of a digital pulse width modulation (PWM) signal, wherein the driving unit further includes: a current sensing unit for sensing the value of a current flowing through at least one of the plurality of semiconductor light-emitting devices; and a current compensation unit for compensating for the current deviation between the plurality of semiconductor light-emitting devices on the basis of the current value sensed by the sensing unit.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: March 29, 2022
    Assignees: LG ELECTRONICS INC., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Sunghwan Kim, Seongjin Park, Oh-Kyong Kwon
  • Patent number: 11277000
    Abstract: In a DC feed system configured by a plurality of DC electrical circuits being combined, when an arc fault occurs, it is difficult to identify a DC electrical circuit in which an arc has occurred. For this reason, a DC electrical circuit protection apparatus includes: a plurality of DC electrical circuits, each of which has a current sensor provided in at least one of a positive or a negative electrical path and has arc noise absorbing mechanism on the upstream side of the current sensor; and an arc detection device which compares respective arc noise signal strengths of the DC electrical circuits from current signals detected by the current sensors of the DC electrical circuits, and based on the signal strengths, identifies a circuit in which an arc has occurred, wherein a DC electrical circuit in which an arc has occurred is identified.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 15, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Makoto Kanemaru, Mitsugi Mori, Mitsuru Tsukima
  • Patent number: 11239838
    Abstract: This application discloses a driving device for a power device. It includes a detection module, coupled to the power device, configured to detect the overcurrent status of the power device; a drive module, respectively coupled to the detection module and the power device, configured to regulate the power device according to the detection result of the detection module; wherein, when the detection result is that the power device is in the first overcurrent state, the drive module is configured to cause the power device to enter the first protection mode that is softly turned off and does not respond to the system switching signal; when the detection result is that the power device is in the second overcurrent state, the drive module is configured to cause the power device to enter a second protection mode that is softly turned off but responds to a system switching signal; wherein the overcurrent degree in the first overcurrent state is higher than that of the second overcurrent state.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: February 1, 2022
    Assignee: LEN Technology Limited
    Inventors: Jingquan Chen, Chuan Ni, Wei Lu
  • Patent number: 11239693
    Abstract: An on-board control apparatus includes: a controller connected to a controlled device mounted in a vehicle via a signal line and configured to control the operation of the corresponding controlled device; and a power source box connected to a power source mounted in the vehicle via a power line, that is connected to the controlled device mounted in the vehicle via a power line, and configured to switch between supply and non-supply of power from the power source to the controlled device, wherein the power source box includes; a switch disposed in a power supply path from the power source to the controlled device; a reception unit configured to receive an input of the switching command; and a switching control unit configured to switch between conduction and interruption of the switch in response to the switching command received by the reception unit.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: February 1, 2022
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Tomohiro Mizutani, Tsuyoshi Kontani
  • Patent number: 11203245
    Abstract: A drive circuit anomaly diagnosing device of the present invention performs an anomaly diagnosis on a drive circuit including a power supply line on which a solenoid is disposed midway, a main switch disposed on the power source side relative to the solenoid, a first diode disposed on a protection line connecting a point between the main switch and the solenoid to ground with a forward direction corresponding to a direction from the ground side to the power source side, and a first capacitor interposed on a first line connecting a point between the protection line and the solenoid to the ground midway on the power supply line, the drive circuit being configured to supply power to the solenoid, on the basis of a current detected by a first current sensor disposed upstream of the main switch on the power supply line.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: December 21, 2021
    Assignee: KYB CORPORATION
    Inventors: Hiroyuki Kojima, Koichiro Awano
  • Patent number: 11201615
    Abstract: A control circuit for controlling a power semiconductor element includes a temperature detection circuit configured to detect a temperature signal of the power semiconductor element, a current detection circuit configured to detect a current signal flowing through the power semiconductor element, a state determination circuit configured to receive the detected temperature signal and the detected current signal, determine a state of the power semiconductor element based on at least one of the detected temperature signal and the detected current signal, and output one or more output control signals indicating the determined state, and a driver circuit configured to control electric power supplied by the power semiconductor element based on the output control signals.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: December 14, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Kazuhiro Taguchi
  • Patent number: 11196253
    Abstract: The invention relates to a method and system for electronic current control for a flexible DC battery pack, in which the battery pack has a plurality of flexibly interconnectable modules having a respective energy store and at least two respective controllable switches and the modules are electrically connected to one another to form a section having a first and a second section end and the two section ends are connected to a respective high-voltage connection, in which the at least two switches of a respective module interrupt a battery current I or interconnect the respective energy store at least in series or parallel with or to bypass the respective energy store of the respectively adjacent module, in which the flexible interconnection of the modules is controlled by a battery control unit and hence a prescribed DC voltage V is provided.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: December 7, 2021
    Inventor: Stefan Goetz
  • Patent number: 11175318
    Abstract: An overcurrent detector for multiple level shifter circuits includes an overcurrent detecting circuit that senses currents acquired through level shifter circuits, and that outputs an indication signal indicating occurrence of overcurrent when one of the currents sensed thereby is greater than a predefined current level.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: November 16, 2021
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventor: Hsiang-Yi Chiu
  • Patent number: 11171639
    Abstract: A drive device adapted to drive a semiconductor power device, wherein the drive device comprises a drive circuit comprising a first terminal adapted for connection to a first terminal of the power device, a gate terminal adapted to provide a driving signal for a gate terminal of the power device, a sensor for detecting overvoltage conditions at the first terminal of the power device, and wherein the drive circuit is adapted to modify the driving signal when the sensor detects an indication of an overvoltage condition, and wherein the drive circuit including the sensor is integrated onto a single substrate.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: November 9, 2021
    Inventors: Jinsheng Song, Remigiusz Viktor Boguszewicz
  • Patent number: 11131604
    Abstract: A tester tool for a sensor and related method includes connecting the sensor to the tester tool, activating the tester tool to operate the sensor, and testing the sensor. The tester tool includes a power supply, a control module, a display module and a connector plug adapted for releasable connection with a sensor connector plug, the connector plug being connected to the power supply for receiving power to operate the sensor, and to the control module for providing information to the control module from the sensor. The display module provides information to a user indicative of operation of the sensor when the sensor is active and receives power to operate from the power supply.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: September 28, 2021
    Assignee: Caterpillar Inc.
    Inventor: Paul Krogmann
  • Patent number: 11121539
    Abstract: The present invention discloses a DC solid-state circuit breaker with self-adapt fault current limiting capability. The topology of the DC solid-state circuit breaker is a H-bridge circuit consisting of two unidirectional breakable bridge arms and two series-connected diode bridge arms, wherein the two unidirectional breakable bridge arms are connected in series to the two series-connected diode bridge arms in a same direction to form two series branches, respectively; the series branches are connected in parallel; a series branch formed by a DC reactor L and a DC biased power supply is connected to the PCC between the two unidirectional breakable bridge arms and the PCC between the two series-connected diode bridge arms; the DC line is connected to the two PCCs, respectively.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: September 14, 2021
    Assignee: Tianjin University
    Inventors: Bin Li, Jiawei He
  • Patent number: 11087691
    Abstract: A display device includes: a display panel including data lines, gate lines, and pixels, the display panel is operated in an active period or in a blank period; and a driving circuit for driving the display panel, the driving circuit including: a signal controller for outputting clock control signals; a voltage generator for receiving the clock control signals, wherein the voltage generator outputs active clock signals synchronized with the clock control signals during the active period and outputs blank clock signals during the blank period; and an overcurrent detection circuit for receiving the clock control signals and the blank clock signals, the overcurrent detection circuit detects an overcurrent of the blank clock signals, and a phase difference between the clock control signals in the active period is different from a phase difference between the clock control signals in the blank period.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: August 10, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yanguk Nam, Dae-sik Lee, Yoomi Kim, Junghwan Hwang
  • Patent number: 11088531
    Abstract: A device, battery and method for spark detection based on transient currents is provided. The battery includes: a cell; an interface; a first protection circuit and a second protection circuit. The first protection circuit comprises a first switch between the cell and the interface. The second protection circuit comprises a second switch between the cell and the interface. The first protection circuit is configured to: measure a load current on the cell; and open the first switch according to a first delay time based on the measurement of the load current. The second protection circuit is configured to: measure a transient current on the cell above the load current; and open the second switch according to a second delay time, lower than the first delay time, based on the measurement of the transient current.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: August 10, 2021
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Muhamad Ridzuan Azizan, Macwien Krishnamurhti, Kow Chee Chong, Chen Kok Yeoh
  • Patent number: 11075513
    Abstract: A circuit breaker is proposed, comprising a live line and a neutral line and a semiconductor switching unit located in the live line, the circuit breaker further comprises a bypass line, which is connected in parallel to the semiconductor switching unit, with a first mechanical switch and a second mechanical switch located in the bypass line, with the first mechanical switch connected in series to the second mechanical switch, whereby the semiconductor switching unit, the first mechanical switch and the second mechanical switch are controlled by a processing unit of the circuit breaker, which is embodied to send a first opening command to the first mechanical switch in case of a short-circuit-detection, and sending a second opening command to the second mechanical switch a time-delay after sending of the first opening command.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: July 27, 2021
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventor: Kenan Askan
  • Patent number: 11068004
    Abstract: A regulator includes: a first transistor connected between an input terminal and an output terminal; a feedback circuit configured to control a control voltage of a control electrode of the first transistor such that a voltage of the output terminal approaches a target voltage according to a feedback voltage proportional to the voltage of the output terminal; a second transistor having one end connected to the input terminal and a control electrode to which the control voltage is applied in common with the first transistor; and a clamp circuit configured to set the other end of the second transistor to a voltage determined by the voltage of the output terminal.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: July 20, 2021
    Assignee: Rohm Co., Ltd.
    Inventor: Makoto Yasusaka
  • Patent number: 11070046
    Abstract: A short-circuit protection circuit for a self-arc-extinguishing type semiconductor element includes a first protection circuit and a second protection circuit. The first protection circuit is configured to reduce a voltage between a control electrode and a first main electrode of the self-arc-extinguishing type semiconductor element when detecting overcurrent flowing between the first main electrode and a second main electrode. The second protection circuit is configured to: detect current flowing in an interconnection adapted to supply the drive voltage; determine, based on the detected current, whether the first protection circuit is in an operating state; and change the drive voltage to turn off the self-arc-extinguishing type semiconductor element when the first protection circuit is in the operating state.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: July 20, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshitaka Naka, Yasushi Nakayama, Yoshiko Tamada, Hiroyuki Takagi, Junichiro Ishikawa, Kazuhiro Otsu, Naohiko Mitomi
  • Patent number: 11050236
    Abstract: The invention relates to a novel approach for the protection of electrical circuits from ground faults and parallel and series arc faults in a fully solid-state circuit configuration. Solid-state circuits and methods of use are described that provide the key functions of low-voltage DC power supply, mains voltage and current sensing, fault detection processing and high voltage electronic switching.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: June 29, 2021
    Inventors: Mark Telefus, Bradley Larson, Harry Rodriguez, Stephen C. Gerber
  • Patent number: 11029343
    Abstract: A system for current measurement and ground fault detection is disclosed. In embodiments, the system includes a plurality of Hall Effect sensors configured to detect phase currents associated with at least one portion of a multi-phase system. The system further includes a plurality of phase current measurement circuits and a ground fault detection circuit connected to the Hall Effect sensors. The phase current measurement circuits are configured to measure the phase currents detected by the Hall Effect sensors, and the ground fault detection circuit is configured to measure a summation of the phase currents detected by the Hall Effect sensors.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: June 8, 2021
    Assignee: Koninklijke Fabriek Inventum B.V.
    Inventors: Manuel Perez Camacho, Dennis Mulders
  • Patent number: 11025046
    Abstract: A power switch circuit is disclosed. The power switch circuit includes a switch circuit, a first current protection circuit, a second current protection circuit and a selection circuit. The switch circuit is coupled between an input terminal and an output terminal. The switch circuit includes a first sensing switch, a second sensing switch and a power switch. The first sensing switch, the second sensing switch and the power switch are the same cell. The first current protection circuit is coupled to the second sensing switch. The second current protection circuit is coupled to the first sensing switch. The selection circuit is coupled to the switch circuit, first current protection circuit and second current protection circuit. The selection circuit generates a selection signal according to an output voltage to selectively enable the first current protection circuit or second current protection circuit.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: June 1, 2021
    Assignee: UPI SEMICONDUCTOR CORP.
    Inventor: Chia-Lung Wu
  • Patent number: 11011908
    Abstract: To join two sources in parallel, the second source output is lowered and then raised until two diodes providing an auxiliary path are passing current. This can reduce current spikes. Alternatively, the diodes can reversed, the voltage raised, and the lowered until diose are passing current.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: May 18, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Christopher E. Hopkins, Michael C. Harke
  • Patent number: 10998897
    Abstract: A power switch over current protection system including a power switch transistor configured to deliver a power current from a power source to power load, a power switch driver configured to control and on/off state of the power switch, an over current protection (OCP) circuit to detect a threshold value of the power current, a discharge transistor configured to discharge a parasitic capacitance of the power switch transistor, and a system state machine to receive a signal from the OCP circuit configured to control an action of the power switch driver and discharge transistor depending on the level of the power current.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 4, 2021
    Assignee: NXP B.V.
    Inventors: Xiaoqun Liu, Madan Mohan Reddy Vemula
  • Patent number: 10992294
    Abstract: The present disclosure relates to a driver device, which can drive a load in high temperatures. In a driver IC which drives a motor by switch-driving four output transistors, a gate driving circuit is configured to render a slew rate of a gate voltage of each output transistor to be adjustable at multiple steps while the output transistor is switching. Although a predetermined rate is set to be the slew rate of the gate voltage in a normal state, the slew rate is increased at high temperatures.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: April 27, 2021
    Assignee: Rohm Co., Ltd.
    Inventors: Tetsuo Yamato, Noboru Takizawa
  • Patent number: 10971050
    Abstract: The present application discloses a method for driving a display panel for displaying images. The method includes determining multiple subpixels in a bright area of an image to be displayed by the display panel. The bright area is an image display area having a luminance value maintained greater than a threshold luminance value for a duration longer than a threshold duration. Additionally, the method includes driving the multiple subpixels to emit light alternatingly in a period of alternate light-emission for displaying the image. Furthermore, the method includes driving all adjacent subpixels surrounding any one subpixel that is not emitting light during the period of alternate light-emission to provide luminance rendering to the one subpixel such that the luminance value of the bright area is greater than the threshold luminance value.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: April 6, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yicheng Lin, Mingi Chu
  • Patent number: 10965120
    Abstract: An embodiment electronic circuit includes an electronic switch comprising a load path, and a control circuit configured to drive the electronic switch and configured to operate in one of a first operation mode and a test mode. The control circuit comprises a test mode input and is configured to operate in the test mode based on a test signal received at the test mode input. The control circuit in the first operation mode is configured to generate a first protection signal based on a current-time-characteristic of a load current of the electronic switch and drive the electronic switch based on the first protection signal.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: March 30, 2021
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Robert Illing, Christian Djelassi
  • Patent number: 10955905
    Abstract: Described herein are mechanisms and methods for blocking the propagation of signals to Integrated Circuit (IC) components that have been power gated, rather than simply suffering from leakage through signals that might not be parked in a low state. In some embodiments, switches that block the flow of current in such signals may enable turning off power to any IC component and not just to circuits on an IC component that make sole use of protocols that are friendly to power gating. This may advantageously increase power savings, by permitting more portions of a system in an idle state to be power gated, or by reducing or eliminating leakage in signals on boundaries of blocks being power gated, or both.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: March 23, 2021
    Assignee: North Sea Investment Company Ltd.
    Inventor: Mathew Salazar
  • Patent number: 10943754
    Abstract: Disclosed is a circuit breaker apparatus, including a first switching assembly, a first controller, a second switching assembly and a second controller. The first switching assembly is connected in series between a positive pole of a power supply and a load. The first switching assembly includes multiple first switching units in series. The first controller is electrically connected to a first pre-set reference potential of the first switching assembly. The first controller is electromagnetically coupled with each first switching unit through a first transformer unit. The second switching assembly is connected in series between a negative pole of the power supply and the load. The second switching assembly includes multiple second switching units in series. The second controller is electrically connected to a second pre-set reference potential of the second switching assembly. The second controller is electromagnetically coupled with each second switching unit through a second transformer unit.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: March 9, 2021
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Teng Liu, Lifeng Qiao, Dehui Zhang, JianPing Ying
  • Patent number: 10930195
    Abstract: The present application discloses a method for driving a display panel for displaying images. The method includes determining multiple subpixels in a bright area of an image to be displayed by the display panel. The bright area is an image display area having a luminance value maintained greater than a threshold luminance value for a duration longer than a threshold duration. Additionally, the method includes driving the multiple subpixels to emit light alternatingly in a period of alternate light-emission for displaying the image. Furthermore, the method includes driving all adjacent subpixels surrounding any one subpixel that is not emitting light during the period of alternate light-emission to provide luminance rendering to the one subpixel such that the luminance value of the bright area is greater than the threshold luminance value.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: February 23, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yicheng Lin, Mingi Chu
  • Patent number: 10923902
    Abstract: The invention relates to a fuse system for at least one load of a vehicle, the fuse system having a fuse apparatus that has at least one electronic fuse for the at least one load and an evaluation and control circuit that evaluates a load current through the at least one electronic fuse and compares the load current with at least one prescribed disconnection criterion of a first parameter set, wherein the evaluation and control circuit initiates a trip process that trips the at least one electronic fuse and disconnects the load current to the corresponding load if the at least one prescribed disconnection criterion is satisfied.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: February 16, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Werner Schiemann, Thomas Lang
  • Patent number: 10910678
    Abstract: The battery protection integrated circuit includes: a higher-level reception terminal configured to receive information from a higher-level circuit; a lower-level transmission terminal configured to transmit information to a lower-level circuit; a storage configured to store a unique identification information; a higher-level signal input terminal configured to be supplied with a permission signal; a lower-level signal output terminal configured to output a second permission signal to the lower-level circuit; a storage controller configured to store a unique identification information when the identification information is not stored, and when the permission signal is supplied; and a switch configured to make the lower-level signal output terminal not provide the second permission signal when the identification information is not stored in the storage, and make the lower-level signal output terminal provide the second permission signal when the identification information is stored in the storage.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: February 2, 2021
    Assignee: ABLI INC.
    Inventor: Biao Shen
  • Patent number: 10896905
    Abstract: In a described example, an apparatus includes: a first metal oxide semiconductor field effect transistor (MOSFET) coupled between a first input terminal for receiving a supply voltage and an output terminal for coupling to a load, and having a first gate terminal; an enable terminal coupled to the first gate terminal for receiving an enable signal; a first current mirror coupled between the first input terminal and a first terminal of a first series resistor and having an input coupled to the first gate terminal; and a second MOSFET coupled between the first gate terminal and the output terminal, and having a second gate terminal coupled to the first terminal of the first series resistor, the first series resistor having a second terminal coupled to the output terminal.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: January 19, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Qingjie Ma, Wei Xu, Jingwei Xu, Yang Wang
  • Patent number: 10861657
    Abstract: An objective of the invention is to provide a bidirectional power valve for current occurring in a high voltage DC conductor, control method therefor, hybrid multi-terminal HVDC System using the same. The bidirectional power valve includes a first power diode arrangement of a first conducting direction, a second power diode arrangement of a second conducting direction; a mechanical disconnector, being connected with the second power diode arrangement in series; wherein: the first power diode arrangement and the series-connected second power diode arrangement and the mechanical disconnector are connected in parallel; and the first conducting direction of the first power diode arrangement and the second conducting direction of the second power diode arrangement are opposite to each other. The current commutation and re-commutation can be achieved with less requirement of the timing accuracy of switching event which makes the usage of a mechanical disconnector and power diode feasible.
    Type: Grant
    Filed: October 29, 2017
    Date of Patent: December 8, 2020
    Assignee: ABB Power Grids Switzerland AG
    Inventors: Xiaobo Yang, Bernt Bergdahl, Chunming Yuan, Dawei Yao, Chao Yang
  • Patent number: 10848143
    Abstract: According to one embodiment, there is provided a semiconductor integrated circuit including a first switch transistor, a first reference transistor, a differential amplifier circuit, and a current source. The first switch transistor is electrically connected between a first node on an input terminal side and a second node on an output terminal side. The first reference transistor is electrically connected between the first node and a third node. The differential amplifier circuit has a first input terminal electrically connected to the second node, a second input terminal electrically connected to the third node, and an output terminal electrically connected to a gate of the first switch transistor and a gate of the first reference transistor. The current source is electrically connected between the third node and a reference potential. The first reference transistor has dimensions smaller than dimensions of the first switch transistor.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 24, 2020
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventor: Naotaka Koide
  • Patent number: 10825937
    Abstract: The disclosure relates to a protective circuit for a photovoltaic (PV) module that includes an input having two input terminals for connecting the PV module, an output having two output terminals for connecting further PV modules of a series circuit comprising PV modules, a first switch for connecting one of the input terminals to one of the output terminals, and a controller configured to control the first switch, wherein the protective circuit further includes a series circuit including a first diode and an energy store, wherein the series circuit is arranged in parallel with the input of the protective circuit. The protective circuit also includes a second diode, which connects an output terminal of the protective circuit to a midpoint of the series circuit including the first diode and the energy store, and wherein a series circuit including the second diode and the energy store is connected in parallel with the first switch.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: November 3, 2020
    Assignee: SMA Solar Technology AG
    Inventors: Markus Hopf, Burkard Mueller
  • Patent number: 10804012
    Abstract: A composite circuit protection device includes a positive temperature coefficient (PTC) component, a voltage-dependent resistor, a first conductive lead and a second conductive lead. The PTC component includes a PTC polymeric layer, and first and second electrode layers respectively disposed on two opposite surfaces of the PTC polymeric layer. The voltage-dependent resistor is connected to the second electrode layer of the PTC component. The first and second conductive leads are respectively bonded to the first electrode layer of the PTC component and the voltage-dependent resistor. The PTC component has a rated voltage ranging between 40% and 200% of a varistor voltage of the voltage-dependent resistor.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: October 13, 2020
    Assignee: FUZETEC TECHNOLOGY CO., LTD.
    Inventors: Jack Jih-Sang Chen, Chang-Hung Jiang
  • Patent number: 10790657
    Abstract: In order both to accommodate instantaneous current as well as overcurrent protection in accordance with the load, an overcurrent protection circuit has: a threshold value generation unit that, in accordance with a threshold value control signal, switches between setting an overcurrent detection threshold value to a first set value (? Iref) and a second set value (? Iset) lower than the first set value; an overcurrent detection unit that compares a sense signal in accordance with the current being monitored and the overcurrent detection value and generates an overcurrent protection signal; a reference value generation unit that generates a reference value (? Iset) in accordance with the seconds set value; a comparison unit that compares the sense signal and the reference value, and generates a comparison signal; and a threshold value control unit that monitors the comparison signal, and generates a threshold value control signal.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: September 29, 2020
    Assignee: Rohm Co., Ltd.
    Inventors: Toru Takuma, Naoki Takahashi, Shuntaro Takahashi
  • Patent number: 10770241
    Abstract: A high speed arc suppressor and method include a first phase-specific arc suppressor configured to suppress arcing across contacts of the power contactor in a positive domain and a second phase-specific arc suppressor configured to suppress arcing across the contacts in a negative domain. First and second high speed switches are configured to enable and disable operation of an associated one of the first and second phase-specific arc suppressors. First and second drivers are configured to drive the first and second high speed switches.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: September 8, 2020
    Assignee: Arc Suppression Technologies
    Inventors: Reinhold Henke, Warren Kahle
  • Patent number: 10742023
    Abstract: An object is to provide an air conditioner that can prevent malfunctions due to an inrush current, where the air conditioner includes an inrush-current prevention resistor that prevents inflow of an inrush current from an AC power supply, a relay-a operation unit as a first relay that is serially connected to the inrush-current prevention resistor, a relay-b operation unit as a second relay that is connected in parallel to the inrush-current prevention resistor and the relay-a operation unit as the first relay, an indoor control unit that controls ON and OFF of the relay-a operation unit as the first relay, and an outdoor control unit that controls ON and OFF of the relay-b operation unit as the second relay. When power is being supplied from the AC power supply via the relay-a operation unit as the first relay, the outdoor control unit turns ON the relay-b operation unit as the second relay.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: August 11, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenta Sakurai, Hiroaki Suzuki
  • Patent number: 10720768
    Abstract: An electronic circuit breaker having a control unit and a controllable semiconductor switch which is connected in a current path between a voltage input and a load output, wherein the semiconductor switch is integrated into a voltage-controlled current source circuit, the output current of said current source circuit when the load is connected being adjusted by means of the control unit in such a way that the power of the semiconductor switch is lower than or equal to a maximum power value, and wherein the control unit outputs a setpoint value to the voltage-controlled current source circuit and receives a difference value from said voltage-controlled current source circuit, which difference value is formed from a deviation of an actual value, which represents the output current, from the setpoint value and is supplied to the semiconductor switch as a control signal for driving said semiconductor switch.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: July 21, 2020
    Assignee: Ellenberger & Poensgen GmbH
    Inventor: Diego Fernando Asanza Maldonado
  • Patent number: 10700514
    Abstract: A DC electrical network comprising DC terminals operatively connectable to a converter; and DC transmission paths arranged to interconnect the DC terminals, and including a DC power transmission medium and a switching apparatus. The DC network further including: an active power electronic device connected in at the DC transmission paths, the active power electronic device; a detector configured to detect faults in the DC transmission paths; and a control unit programmed to operate the active power electronic device to vary an apparent impedance of a faulty DC transmission path to force a current flowing in the faulty DC transmission path to reduce to a target current level, and operate the switching apparatus to block current from flowing in the faulty DC transmission path when the current flowing in the faulty corresponding DC transmission path is reduced to the target current level.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: June 30, 2020
    Assignee: General Electric Technology GmbH
    Inventors: Robert Stephen Whitehouse, Carl David Barker
  • Patent number: 10693291
    Abstract: A method for operating an electrical circuit for controllably delivering power from a power source to an electrical load including a switch further configured to operate in a first conducting mode and a second non-conducting mode, and a controller, the method includes ceasing delivering power from the power source to the electrical load.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: June 23, 2020
    Assignee: GE AVIATION SYSTEMS LLC
    Inventors: Peter James Handy, Andrew Paul Wyer
  • Patent number: 10673268
    Abstract: A multiphase charging circuit includes a first phase having a first switch and a second phase having a second switch to provide a system voltage for a system load, a control method of the multiphase charging circuit includes: generating a plurality of feedback control signals with generating each of feedback control signal based on a corresponding feedback signal, a ramp signal, a corresponding reference signal and a current flowing through the first phase; selecting one of the plurality of feedback control signals as a first enable signal; generating a first control signal of the first switch based on the first enable signal and a first time period control signal; generating a second enable signal by shifting a pre-determined phase difference to the first control signal; and generating a second control signal of the second switch based on the second enable signal and a second time period control signal.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: June 2, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventor: Min Xu
  • Patent number: 10667351
    Abstract: System and method for providing at least an output current to one or more light emitting diodes. The system includes a control component configured to receive at least a demagnetization signal, a sensed signal and a reference signal and to generate a control signal based on at least information associated with the demagnetization signal, the sensed signal and the reference signal, and a logic and driving component configured to receive at least the control signal and output a drive signal to a switch based on at least information associated with the control signal. The switch is connected to a first diode terminal of a diode and a first inductor terminal of an inductor. The diode further includes a second diode terminal, and the inductor further includes a second inductor terminal.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: May 26, 2020
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Lieyi Fang, Jun Zhou
  • Patent number: 10651643
    Abstract: Methods and apparatuses for detecting when an electronic device, preferably a portable electronic device (PED) in some embodiments, has been exposed to moisture, and inhibiting the flow of electrical power to the electronic device when the moisture is too high or increasing too fast are disclosed. Embodiments sample air within the device, measure the moisture in the sampled air, inhibit the connection of electrical power to the device if the moisture exceeds a threshold, and permit the connection of electrical power to the device if the moisture is below a threshold. Some embodiments measure the moisture in the ambient air to improve effectiveness. Other embodiments allow resetting of a tripped condition. Other embodiments include constant sampling of air from within the device to assist drying, and inhibiting application of power to the device until the device is sufficiently dry. Still other embodiments interrupt power from the battery within the device.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 12, 2020
    Assignee: Revive Electronics, LLC
    Inventors: Joel Trusty, Reuben Zielinski, Mark Earle, David Douberteen, Scott Moorehead, Micah Trusty
  • Patent number: 10637228
    Abstract: A system electrostatic discharge circuit is provided. The system electrostatic discharge circuit includes a first transient voltage suppressor diode and a first resistance element. The first resistance element and the first transient voltage suppressor diode are coupled in series between a first power line and a second power line. In addition, a resistance value of the first resistance element is proportional to a sum of currents flowing through the first resistance element.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: April 28, 2020
    Assignee: Nuvoton Technology Corporation
    Inventor: Pao-Shu Chang
  • Patent number: 10622883
    Abstract: Resonant power converters. Example embodiments are integrated circuit controllers for a resonant power converter, the controllers including: a frequency controller configured to control frequency of signals driven to a high-side gate terminal and a low-side gate terminal; a fault detector configured to sense an overcurrent condition of a primary winding of the resonant power converter, and to assert an overcurrent signal responsive to the overcurrent condition; a feedback controller that, during periods of time when the overcurrent signal is de-asserted, is configured to sense a signal representative of output voltage by way of the feedback terminal and to create an intermediate signal; and the feedback controller further configured to, during periods when the overcurrent signal is asserted, modify the intermediate signal to increase the frequency of the signals driven to the high-side gate terminal and the low-side gate terminal.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: April 14, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Vaclav Drda, Roman Stuler
  • Patent number: 10618410
    Abstract: A motor vehicle comprises a motor configured to input and output power for driving; an inverter configured to drive the motor; a power storage device configured to transmit electric power to and from the motor; a system main relay configured to connect and disconnect the power storage device with and from a power line on an inverter-side; and a control device configured to enable the motor vehicle to be driven with turning on the system main relay according to a predetermined procedure in response to a system on-operation. The motor vehicle does not perform failure diagnosis of the inverter when an abnormality signal of the inverter is generated before a predetermined time after the system main relay is turned on in response to the system on-operation, while performing the failure diagnosis when the abnormality signal of the inverter is generated after the predetermined time.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 14, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Takahiko Hirasawa, Junmin Cao
  • Patent number: 10573231
    Abstract: A system for compensating the input signals to arrays of pixels that include semiconductor devices that age differently under different ambient and stress conditions. The system creates a library of compensation curves for different stress conditions of the semiconductor devices; identifies the stress conditions for at least a selected one of the semiconductor devices based on the rate of change or absolute value of at least one parameter of at least the selected device; selects a compensation curve for the selected device based on the identified stress conditions; calculates compensation parameters for the selected device based on the selected compensation curve; and compensates an input signal for the selected device based on the calculated compensation parameters.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: February 25, 2020
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Ricky Yik Hei Ngan, Nino Zahirovic