Patents Examined by Yemane Mehari
  • Patent number: 11359899
    Abstract: The present disclosure relates to an electronic detonation device for a blasting system. The electronic detonation device include: an electronic detonator; a wireless communication module; an electric wire connecting the electronic detonator to the wireless communication module; and a communication module support in which the electric wire is stored in a wound state, with the wireless communication module positioned on an upper surface of the communication module support. The communication module support is provided with a pile part configured to be driven into a ground for fixation, so that the electronic detonation device enables stable communication reliability to be secured by orienting the wireless communication module toward the sky, thereby preventing malfunction during blasting and improving blasting accuracy.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: June 14, 2022
    Assignee: HANWHA CORPORATION
    Inventors: Doo Hyun Lee, Ki Won Hwang
  • Patent number: 11362582
    Abstract: A desired OFF period module is configured to determine a desired OFF period for a plurality of switches of a PFC circuit based on an input voltage and an output voltage. A blanking timer module is configured to output a blanking signal, set the blanking signal to a first state when a countdown timer is greater than zero, and set the blanking signal to a second state when the countdown timer reaches zero. A switching control module is configured to: transition a first switch of the plurality of switches from an ON state to an OFF state in response to (i) a measured current through an inductor of the PFC circuit being greater than a demanded current through the inductor and (ii) the blanking signal being in the second state; and maintain the first switch in the OFF state for the desired OFF period after the transition.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: June 14, 2022
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Charles E. Green, Paul Rancuret
  • Patent number: 11356013
    Abstract: A method of short-circuiting a faulty submodule for a voltage-source power converter is disclosed. The submodule is based on a full-bridge, asymmetric full-bridge or half-bridge circuit design having power semiconductor switches with anti-parallel freewheeling diodes and optionally non-controllable semiconductor valves. The method 36 includes identifying a faulty semiconductor device and determining a failure mode selected from a short-circuit failure mode and an open circuit failure mode. The method further includes selecting a minimum number of power semiconductor switches suitable to provide a bypass path through the submodule depending on the identified faulty semiconductor device and the determined failure mode and driving the selected power semiconductor switches by a modified driving voltage compared to normal operation to cause them to break down in order to provide a durable, stable, low impedance short-circuit path between the AC voltage terminals of the submodule.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: June 7, 2022
    Assignee: GE Energy Power Conversion Technology Ltd.
    Inventors: Martin Geske, Hendrik Gloes, Varun Raghunath
  • Patent number: 11356029
    Abstract: Disclosed are a rectifying circuit and a switched-mode power supply. The rectifying circuit includes a first rectifying section for rectifying a positive induced voltage generated across a secondary winding of a transformer, a second rectifying section for rectifying a negative induced voltage generated across the secondary winding, and an inductance section connected between the first rectifying section and the second rectifying section. The switched-mode power supply includes a transformer having a primary winding and a secondary winding, a drive circuit for switchingly driving the primary winding of the transformer, and the rectifying circuit connected to the secondary winding of the transformer.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: June 7, 2022
    Assignee: ROHM Co., LTD.
    Inventors: Kenji Hamachi, Akeyuki Komatsu
  • Patent number: 11355925
    Abstract: A neutral arrangement is provided for a converter station of a direct current power transmission system that includes a first converter. The neutral arrangement includes surge arrestors and a group of neutral buses. Each surge arrestor is connected between a neutral bus and ground. The neutral arrangement includes a high voltage insulation zoom area having a first group of surge arrestors and a low voltage insulation zoom area having a second group of surge arrestors. The surge arrestors in the first group have a first arrestor reference voltage and the surge arrestors in the second group have a second arrestor reference voltage that is lower than the first arrestor reference voltage.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: June 7, 2022
    Assignee: HITACHI ENERGY SWITZERLAND AG
    Inventor: Ying-Jiang Hafner
  • Patent number: 11349299
    Abstract: A system includes a transformer rectifier unit (TRU) having three inputs, a first AC bus configured to supply power to a first of the three inputs, a second AC bus configured to supply power to a second of the three inputs, and a third AC bus configured to supply power to a third of the three inputs. The system includes a power quality sense device electrically connected to each of the first, second and third AC busses. The system includes an electrically held contactor electrically connected between the TRU and the power quality sense device. The electrically held contactor is configured and adapted to be switched ON or OFF depending on whether the power quality sense device is energized or de-energized.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: May 31, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Robert L. Seagren
  • Patent number: 11342324
    Abstract: The present application provides a low-leakage static electricity releasing circuit, a display panel and a display device. T1, T2 and T3 that are connected in series are taken as a first group. T4, T5 and T6 that are connected in series are taken as a second group. The first group and the second group serve as releasing paths for static electricity with negative voltages and static electricity with positive voltages, respectively. When one of the groups releases the static electricity, the other group has small current leakage. This reduces the affection of a static electricity releasing circuit on the voltage of a signal line due to the current leakage, and is applicable to static electricity releasing for foldable areas of a flexible, foldable display screen.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: May 24, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Zhenfei Cai
  • Patent number: 11342147
    Abstract: The disclosure relates to an electromagnetic relay that comprises a yoke and an armature. The armature may be swivellably arranged on the yoke, have an open position and a contact position in relation to the yoke, and configured to be attracted by a magnetic field out of the open position into the contact position. The armature may include a first branch circuit having a first capacitor and a first exciter coil connected in series with the first capacitor, a second branch circuit having a second capacitor and a second exciter coil connected in series with the second capacitor, and a switch element arranged between the first branch circuit and the second branch circuit and having a first switch state and a second switch state. The first exciter coil and the second exciter coil may provide the magnetic field for attracting and retaining the armature.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: May 24, 2022
    Assignee: Phoenix Contact GmbH & Co. KG
    Inventors: Stefan Benk, Christian Adam, Ralf Hoffmann
  • Patent number: 11342148
    Abstract: A relay device includes a coil portion, a fixed contact, a spring, a moving contact and a drive circuit. The drive circuit controls the electromagnetic force of the coil portion to be a first electromagnetic force when switching the fixed contact and the moving contact in a contact state to a non-contact state. The drive circuit controls the electromagnetic force of the coil portion to be a second electromagnetic force that is larger than the first electromagnetic force after a lapse of a first time from start of control of the electromagnetic force of the coil portion to be the first electromagnetic force. The drive circuit controls the electromagnetic force of the coil portion to be reduced with time after a lapse of a second time from start of control of the electromagnetic force of the coil portion to be the second electromagnetic force.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: May 24, 2022
    Assignee: Marelli Corporation
    Inventors: Kouichirou Horikoshi, Junya Tanaka
  • Patent number: 11336200
    Abstract: A controller (5) of an uninterruptible power supply apparatus includes: first to sixth comparator circuits (22a to 22f) respectively provided corresponding to first to sixth IGBTs (Q1 to Q6) and outputting, based on a comparison result of the magnitude of three-phase AC voltages, signals (A1 to A6) indicating that a corresponding IGBT is to be turned on; and a control unit (23) that, when a voltage between terminals (VD1 or VD2) of a first or second capacitor (C11 or C12) is higher than a target voltage (VDT), turns on and off each of the first to sixth IGBTs based on signals output from the first to sixth comparator circuits to decrease the voltage between terminals of the first or second capacitor.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: May 17, 2022
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Hiroki Shigeta, Toshihide Nakano
  • Patent number: 11337301
    Abstract: A printed circuit board includes a line formation layer including a differential line having a first conductor and a second conductor, a first component for a countermeasure against a surge, a first connection conductor having one end connected to the first conductor and another end connected to the first component, a second component for a countermeasure against a surge, a second connection conductor having one end connected to the second conductor and another end connected to the second component, a ground layer, and a dielectric mounted between the line formation layer and the ground layer. Lengths of the first conductor and second conductor are adjusted based on a difference of capacitance values in the circuit board.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: May 17, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ayumi Sakai, Fujiyuki Nakamoto, Yuichi Sasaki, Naoto Oka, Hideyuki Ohashi
  • Patent number: 11329568
    Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: May 10, 2022
    Assignee: STMicroelectronics S.r.l.
    Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
  • Patent number: 11329551
    Abstract: A power sensing and switching circuit, using voltage and current sensors, integrated circuits and logic gates that detects reverse power flow, from reactive loads, non-linear loads or dispersed electrical generators, and mitigates reverse power flow by functioning as a power factor correction device and by diverting the reverse power flow as recycled power to storage, local usage, or remote usage via a recovery line that mitigates distribution grid instability and speeds up the growth of dispersed electrical generators.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: May 10, 2022
    Inventor: Dean Hatsuo Motoyama
  • Patent number: 11329552
    Abstract: In a power converter, a switching network having switches that operate at a common frequency and duty cycle interconnects circuit elements. These circuit elements include capacitors that are in a capacitor network and a magnetic filter. When connected to the capacitors by a switch from the switching network, the magnetic filter imposes a constraint upon inter-capacitor charge transfer between the capacitors to maintain the filter's second terminal at a voltage. The switching network transitions between states. These states include a first state, a second state, and a third state. In both the first state and the third state, the first magnetic-filter terminal couples to the capacitor network. In the second state, which occurs between the first and third state, the switches ground the first magnetic-filter terminal.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: May 10, 2022
    Assignee: pSemi Corporation
    Inventor: David Giuliano
  • Patent number: 11323042
    Abstract: A power conversion device according to an embodiment includes an element unit and a capacitor unit. The element unit includes a first positive electrode bus, a first negative electrode bus, and a first outer frame member. The capacitor unit includes a second positive electrode bus, a second negative electrode bus, and a second outer frame member. The first outer frame member and the second outer frame member are separable from each other. The first positive electrode bus and the second positive electrode bus are removably connected to each other. The first negative electrode bus and the second negative electrode bus are removably connected to each other.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: May 3, 2022
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Mitsuru Hano, Kenji Uetani
  • Patent number: 11316337
    Abstract: A processor starts output of a drive signal prior to output of a control signal. The processor determines a fault related to the drive signal based on a detection signal outputted from a detection circuit. In a case where a fault related to the drive signal is not detected, the processor starts output of the control signal. In a case where a fault related to the drive signal is detected, the processor stops output of the drive signal.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: April 26, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takayuki Hata
  • Patent number: 11309878
    Abstract: A power conversion system is provided. The power conversion system includes a power conversion circuit and N clamping circuits. The power conversion circuit includes an input port, an output port, N switching power conversion units and N?1 storage device. The switching power conversion unit includes a first switch and a second switch. N is an integer larger than 1. Two ends of the storage device have a first node and a second node respectively. The clamping circuit includes an absorbing capacitor and an absorbing diode and has a first terminal, a second terminal and a third terminal. The first and second terminals are electrically connected to two ends of the corresponding second switch respectively. The absorbing capacitor and the absorbing diode are serially coupled between the first and second terminals for absorbing a peak voltage. The third terminal is electrically connected to the corresponding first node or the input port.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: April 19, 2022
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Da Jin, Yahong Xiong, Qinghua Su
  • Patent number: 11303214
    Abstract: A power conversion device includes a first switching element and a first inductor connected in series between a first terminal and a second terminal, the first inductor and a second switching element being connected in series between the second and third terminals, a switching controller that alternately turns on and off the first and second switching elements, a first capacitor connected between the first and second terminals, and a second capacitor connected between the second and third terminals. When a first full-wave rectified voltage is input, switching frequencies of the first switching element and the second switching element, an inductance of the first inductor, a capacitance of the first capacitor, and a capacitance of the second capacitor are set so that a second full-wave rectified voltage having a voltage amplitude and a phase same as the voltage amplitude and the phase of the first full-wave rectified voltage is output.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: April 12, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yusuke Hayashi, Kazuto Takao
  • Patent number: 11296610
    Abstract: An object of the present invention is to sufficiently reduce a switching loss. A control device causes a positive electrode of a first voltage to appear at a second connection point by switching second and third switching elements to an ON state. Next, the control device causes the positive electrode of the first voltage to appear at a first connection point by switching the second and third switching elements to an OFF state. After that, fifth and eighth switching elements are switched to the OFF state, and sixth and seventh switching elements are switched to the ON state.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: April 5, 2022
    Assignee: Hitachi, Ltd.
    Inventors: Kimihisa Furukawa, Shintaro Tanaka, Takae Shimada, Akihiko Kanouda, Mizuki Nakahara, Yuuichi Mabuchi
  • Patent number: 11294410
    Abstract: A voltage regulator includes an error amplifier which controls the gate of an output transistor so that a feedback voltage based on an output voltage of an output terminal matches a first reference voltage, a first transistor having a gate to which a second reference voltage is supplied, and a first resistor connected between the gate of the output transistor and the source of the first transistor. The first resistor functions as a resistance constituting a phase compensation circuit by a current flowing therethrough in response to a small output current of the output transistor.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: April 5, 2022
    Assignee: ABLIC INC.
    Inventor: Kaoru Sakaguchi