Patents Examined by Jagdeep S Dhillon
  • Patent number: 10742072
    Abstract: A wireless power transmitter circuit includes a power converter circuit, a power inverter circuit, an LC circuit, a resonant transmitter circuit, and a control circuit. The LC circuit includes an inductor and a capacitor, wherein an reactance of the LC circuit is substantially zero. The LC circuit is for converting the AC output current to a coil current. The resonant transmitter circuit includes at least one transmitter coil and a variable capacitor circuit, wherein the coil current flows through the at least one transmitter coil to generate a resonant wireless power. The control circuit generates a capacitance adjustment signal for adjusting an impedance of the variable capacitor circuit, such that the resonant transmitter circuit substantially operates in an impedance matched condition.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: August 11, 2020
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Kuo-Chi Liu, Ke-Horng Chen
  • Patent number: 10736188
    Abstract: A power supply is electrically connected between a pair of input terminals and is configured to be supplied with electric power from an AC power supply to generate control electric power. A voltage detector is configured to detect a voltage of the control electric power. A controller is configured to be supplied with the control electric power from the power supply to operate. The controller is configured to control a bidirectional switch based on a detection signal from a phase detector so as to switch the bidirectional switch from an ON state to an OFF state at a switching time point when a variable time corresponding to a dimming level elapses from a starting point of a half period of an AC voltage. A stopper is configured to halt generation of the control electric power by the power supply when the voltage detected by the voltage detector is higher than or equal to a prescribed threshold during an OFF time period from the switching time point to an end time point of the half period.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 4, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kiyosi Gotou, Eiichirou Niikura, Kengo Miyamoto, Tomohiro Miyake
  • Patent number: 10734913
    Abstract: Method and apparatus for generating power. In one embodiment the method comprises determining a value of a DC parameter pertaining to a DC power source providing DC power to an inverter; comparing the value to a threshold; and operating the inverter to generate positive power or negative power based on a result of comparing the value to the threshold.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: August 4, 2020
    Assignee: Enphase Energy, Inc.
    Inventor: Martin Fornage
  • Patent number: 10734834
    Abstract: A resonant turn-off circuit is provided to disconnect an inadequate power source and transfer a load to an alternate power source. In the circuit, a main switch is turned off before the AC cycle of the power source crosses zero. As a result, the main switch may be turned off quickly to transfer electric power supplied to a load to a second power source. The circuit may include resonant switches, a capacitor, a pre-charging power supply and an inductor. When it is desired to turn off the main switch, a resonant switch is turned off to cause a voltage reversal across the switch.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: August 4, 2020
    Assignee: ABB SCHWEIZ AG
    Inventors: Zhiguo Pan, Adil Oudrhiri, Zichi Zhang, Yu Du
  • Patent number: 10730459
    Abstract: A vehicle electronic system having an electronic controller and a power switching device configured to switch between a first power setting and a second power setting. The first power setting includes powering at least one of a plurality of electrically powered accessories with power from an on-board electric power supply. The second power setting includes powering the at least one of the plurality of electrically powered accessories with power from an external power supply thereby preventing the use of electric power from the on-board electric power supply. The electronic controller is configured to electronically operate the switching device to switch between the first power setting and the second power setting such that in response to detection of power from the external power supply, the switching device is switched to the second power mode.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: August 4, 2020
    Assignee: Nissan North America, Inc.
    Inventors: Robert Flotkoetter, Dan Magee
  • Patent number: 10715072
    Abstract: The invention is to a controller for a DC electric motor having a first drive circuit and a second drive circuit that operate in a first state and a second state wherein, in the first state, circuits are connected with terminals input and are responsive to the control signals for receiving a load current and selectively energising winding to create torque in motor. In the second state, circuit is disconnected from terminal such that: circuit is able to be responsive to current for generating a first DC charging current to batteries; and circuit is able to connect with a terminal and be responsive to a second DC charging current for selectively directing an energizing current through winding.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: July 14, 2020
    Assignee: InvertedPower Pty Ltd
    Inventor: Stefan Smolenaers
  • Patent number: 10714942
    Abstract: A power transmitter according to an aspect of the present disclosure includes a first coil to wirelessly transmit power to a second coil of a power receiver; a converter to receive direct current (DC) power, convert the DC power into alternating current (AC) power, and supply the AC power to the first coil; and a controller to execute power control for causing power supplied to a load to approach desired power. The controller executes frequency control of the AC power and at least one control of phase shift control of the converter and voltage control of the DC power as the power control. When the power supplied to the load cannot be caused to approach the desired power by the frequency control, the controller executes at least one of the phase shift control and the voltage control.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: July 14, 2020
    Assignee: IHI CORPORATION
    Inventor: Shiro Nagaoka
  • Patent number: 10702644
    Abstract: A system for omni-orientational wireless energy transfer is described. A transmitter unit has a transmitter resonator with a coil that is configured to be coupled to a power supply to wirelessly transmit power to a receiver unit. A receiver unit has a receiver resonator with a coil coupled to a device load. At least one of the resonators is a non-planar resonator that spans a non-degenerate two-dimensional surface having at least one concave portion.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: July 7, 2020
    Assignee: TCI LLC
    Inventors: Joseph Stark, Edward Burke
  • Patent number: 10682919
    Abstract: An electric vehicle includes: a motor that is arranged on a first side of front and rear sides of a vehicle; a rechargeable electric source that is arranged closer to a vehicle room than the motor; an inverter unit that includes an inverter which is fixed to the motor and which is configured to control and drive the motor by electric power that is supplied from the electric source; a charge circuit for charging the electric source; and a first unit that is fixed to a vehicle body at the first side of the vehicle, wherein the inverter unit is connected to the electric source by a cable, and the first unit is connected to the electric source by a cable that is independent of the cable which connects together the inverter unit and the electric source.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: June 16, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Makoto Hatami
  • Patent number: 10678286
    Abstract: The present invention is directed to an electrical wiring device that includes a housing assembly having a plurality of terminals at least partially disposed therein, the plurality of terminals being configured to be coupled to an AC power source and at least one electrical load, the plurality of terminals being configured to provide the electrical wiring device with regulated AC power in a device energized state. At least one variable control mechanism is coupled to the housing assembly, the at least one variable control mechanism being configured to regulate power to the at least one electrical load by way of a control knob being user settable between a first adjustment stop and a second adjustment stop. A user accessible calibration button is included. At least one series pass element coupled to the at least one variable control mechanism, the at least one series pass element being configured to provide load power to the at least one electrical load in accordance with a user setting of the control knob.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: June 9, 2020
    Assignee: Pass & Seymour, Inc.
    Inventors: Anthony M. Testani, Brian Mueller
  • Patent number: 10672578
    Abstract: A programmable solid-state relay includes a base module; a configuration module; a control voltage module having an energy storage device; a controller module having at least two microcontrollers, each having an internal EEPROM memory and at least one digital timer; and at least one switch module including at least one switching circuit having first and second switching contacts. The control voltage module is adapted to receive an applied control voltage and to permit pre-selection of an activation voltage level and a de-activation voltage level.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: June 2, 2020
    Assignee: DAVID STUCKEY INVESTMENTS PTY LTD
    Inventors: David Martin Stuckey, Brent Graham, Michael Strike, Tenry Kusuma Negara
  • Patent number: 10666186
    Abstract: A movable solar power apparatus may comprise at least a solar panel set electrically connected to a maximum power point tracking system (MPPT). A lithium battery set is electrically connected to a battery management system (BMS) which is adapted to monitor and protect the lithium battery set, and the BMS is electrically connected to the MPPT to enable power generated by the solar panel set to directly charge the lithium battery set. A low potential wake-up circuit has a double-contact relay and a single-contact relay, and the double-contact relay comprises a main contact, a first contact, and a second contact. The main contact is switchably electrically connected to the first contact or the second contact, and the main contact is electrically connected to the BMS while the first contact is electrically connected to the master control circuit, and the MPPT is electrically connected to the BMS under normal condition.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: May 26, 2020
    Assignee: AVERTRONICS INC.
    Inventors: Austin Lai, Kai-Yang Cheng, Wei-Fu Hsu
  • Patent number: 10651688
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for dynamically tuning circuit elements. One aspect includes a variable capacitance device. The device includes a first capacitor, a first switch, a second capacitor, a second switch, and control circuitry. The control circuitry is configured to adjust respective capacitances of the first and second capacitors by causing a first control signal to be applied to the first-switch control terminal for a duration of time in response to detecting a zero voltage condition across the first switch, and by causing a second control signal to be applied to the second-switch control terminal for the duration of time in response to detecting a zero voltage condition across the second switch.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 12, 2020
    Assignee: WiTricity Corporation
    Inventors: Curt Karnstedt, Christopher Buenrostro
  • Patent number: 10651689
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for dynamically tuning circuit elements. One aspect includes a zero voltage switching device including a switch, a first comparator, a second comparator and a controller. The switch includes a first terminal, a second terminal, and a control terminal. The first comparator includes a first input terminal electrically connected to the second terminal of the switch and a second input terminal electrically connected to the first terminal of the switch. The second comparator includes a first input terminal electrically connected to a reference voltage and a second input terminal electrically connected to the control terminal of the switch. The controller is configured to: detect a zero voltage condition across the switch, and, in response, cause a control signal to be applied to the control terminal of the switch.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 12, 2020
    Assignee: WiTricity Corporation
    Inventors: Curt Karnstedt, Christopher Buenrostro
  • Patent number: 10644755
    Abstract: Disclosed herein are methods and systems for adjusting the power level of an external reader of an electronic device. The external reader transmits power to the electronic device with a radio frequency electromagnetic signal. The electronic device may rectify the radio frequency electromagnetic signal and create a rectified voltage. The rectified voltage may be positively correlated to the power level transmitted by the external device. The rectified power can be used to power a component of the electronic device, such as a component configured to measure either a voltage or power associated with the rectified voltage. The electronic device may communicate the measured voltage or power back to the external reader. Based on the communicated voltage or power, the external reader may adjust its power level of the transmitted power.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: May 5, 2020
    Assignee: VERILY LIFE SCIENCES LLC
    Inventors: Nathan Pletcher, Brian Otis, Francis Honore, Andrew Nelson
  • Patent number: 10629389
    Abstract: A latching relay may be shown and described. The latching relay may use a reed switch, a permanent magnet and a coil. The permanent magnet may be magnetized by pulsing current through the coil, and demagnetized by degaussing current. Also, the magnetized magnet may maintain an activated state of the reed switch, and the demagnetized magnet may maintain a deactivated state of the reed switch.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: April 21, 2020
    Inventor: Patrick L. McGuire
  • Patent number: 10630097
    Abstract: A power supply apparatus includes a power supply unit that wirelessly supplies power to an electronic apparatus, a communication unit that performs a wireless communication with the electronic apparatus, and a control unit that controls a timing for switching a communication process performed by the communication unit and a power supply process performed by the power supply unit.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: April 21, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Iori Aikawa, Katsuya Nakano
  • Patent number: 10630105
    Abstract: According to one aspect, embodiments of the invention provide a power circuit comprising an input to receive input AC power from an AC source, an auxiliary charger configured to convert the input AC power from the input into DC power, a differential amplifier configured to be powered by the DC power from the auxiliary charger, to monitor the input AC voltage level of the input AC power, and to generate a sense signal based on a status of the input AC voltage level, and a processor coupled to the auxiliary charger and the differential amplifier, the processor configured to be coupled to an LPS, to be powered into a low power mode by the DC power from the auxiliary charger, and to analyze the sense signal from the differential amplifier in the low power mode of operation. According to one embodiment, the auxiliary charger is an offline DC-DC converter.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: April 21, 2020
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventors: Ping-Chuan Tsai, Luka Petrovic, Wen-Chun Peng
  • Patent number: 10622807
    Abstract: Disclosed are various embodiments of power source redundancy in a power supply for a rack mounted computing device. The power supply includes a plurality of AC power converters configured to receive power from corresponding power sources. A first AC power converter provides DC power to a common DC bus of the power supply. A second AC power converter provides DC power to the common DC bus in response to a change in the voltage level provided by the first AC power converter.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 14, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Darin Lee Frink, Peter G. Ross
  • Patent number: 10622811
    Abstract: Disclosed in a stand-alone micro-grid autonomous control system including: at least one battery system directly changing a reference frequency thereof according to a charge amount, and providing power having the changed reference frequency; at least one power generator measuring the reference frequency from the power provided form the at least one battery system, and starting generating power or stopping generating power based on the measured reference frequency; and at least one load measuring the reference frequency from the power provided from the battery system, and performing a synchronization operation or a synchronization releasing operation based on the measured reference frequency.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: April 14, 2020
    Assignee: Korea Electric Power Corporation
    Inventors: Won-Wook Jung, Cheol-Min Chu, Jung-Sung Park, Sang-Yun Yun, Seong-Chul Kwon, Jeong-Hun Kim