Patents Examined by Gary Nash
  • Patent number: 11228170
    Abstract: A power control device includes: an output voltage controller configured to control an output voltage based on a feedback voltage corresponding to the output voltage; and an overvoltage protector configured to continue or stop the operation of the output voltage controller based on a first detection result of whether the output voltage has exceeded an output voltage threshold value and a second detection result of whether the feedback voltage has fallen to or below a feedback voltage threshold value.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: January 18, 2022
    Assignee: Rohm Co., Ltd.
    Inventor: Kenichi Okajima
  • Patent number: 11223291
    Abstract: A bipolar bidirectional DC converter comprises at least two valve group series (101, 102) and at least six magnetic elements (103), and said valve group series are divided into a Type-I valve group series (102) and a Type-II valve group series (101) each valve group series (101, 102) comprises a high-voltage DC port, a low-voltage DC port and at least three AC ports, and each AC port is connected to a magnetic element (103); and the other ends of the magnetic elements (103), which are connected to all the AC ports in the same valve group series (101, 102), are connected.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: January 11, 2022
    Inventors: Chen Xie, Zhongfeng Zhang, Jie Tian, Yeyuan Xie, Haiying Li, Yu Wang, Jian Ge
  • Patent number: 11211872
    Abstract: A boost rectifier that operates with a single-phase input voltage includes (i) an input stage receiving the single-phase input voltage and including first and second input filter capacitors, (ii) a switching converter stage coupled to the input stage and including a rectification circuit and an inductor circuit, series-connected first and second switches providing a common terminal therebetween, and a phase output capacitor, (iii) an output stage that transfers energy stored in the phase output capacitor to an output load, (iv) a decoupling stage that provides high-impedance decoupling between the switching converter stage and the output stage, and (v) a control circuit configured to operate the first and second switches according to an output signal of a non-linear compensation circuit that combines a feedforward signal derived from both the input and output voltages of the boost rectifier with an output voltage feedback control signal.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: December 28, 2021
    Inventors: Yungtaek Jang, Misha Kumar, Tomas Sadilek, Peter Barbosa
  • Patent number: 11211782
    Abstract: A temporary power delivery system includes a power source, a booth stringer, and a portable GFCI device. The GFCI device is receives current from the power source by a first terminal and delivers current to the booth stringer by a second terminal. An electronic processor of the GFCI device compares a combined magnitude of current flowing through first and second phase conductors of the GFCI device to a magnitude of current flowing through a neutral conductor of the GFCI. The electronic processor also compares a first voltage between the first phase conductor and neutral conductor to a second voltage between the second phase conductor and neutral conductor. A circuit breaker of the GFCI device is opened if a difference between the combined magnitude of phase conductor current and neutral conductor current exceeds a first threshold or a difference between the first voltage and second voltage exceeds a second threshold.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: December 28, 2021
    Assignee: Hubbell Incorporated
    Inventors: Roy Itzler, Nicole Gay
  • Patent number: 11205958
    Abstract: A power conversion system including a power conversion unit, a power circuit and a precharge circuit is provided. The power conversion circuit includes an input port, an output port, switching power conversion units and at least one storage device. The storage device is connected between the input and output ports in series. The power circuit is electrically connected to the power conversion circuit for receiving the input voltage and outputting a supply voltage to the power conversion circuit, and the power circuit includes a magnetic element. The precharge circuit precharges the storage device. The precharge circuit includes a winding and a rectifier filter circuit connected to each other. The winding is coupled to the magnetic element for receiving a conversion voltage. The rectifier filter circuit is electrically connected to the storage device so as to receive the conversion voltage and output a charge voltage to the corresponding storage device.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: December 21, 2021
    Inventors: Da Jin, Yahong Xiong, Qinghua Su
  • Patent number: 11194356
    Abstract: Techniques for efficient operation of a linear stage in an H-bridge system are provided. In an example, a linear stage can switch between voltage regulation and current regulation over a range of a command signal. The particular regulation mode can depend on the regulation mode of a switched stage of the H-bridge system. Efficiency can be realized by using current regulation of the linear stage when the output voltage of the linear stage moves away from the voltage of a supply rail. Such a control scheme can reduce the voltage across the linear stage for a larger range of the command signal resulting in less heat dissipation of the linear stage compared to conventional control of H-bridge linear stages.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: December 7, 2021
    Assignee: Analog Devices International Unlimited Company
    Inventors: Fu Sun, Xiaohua Su, Stephen Todd Van Duyne, Yanfeng Lu, Mathew Todd Wich
  • Patent number: 11196345
    Abstract: An interleaved power converter includes a control circuit and multiple phase-shifted subconverters each having at least one power switch. The control circuit is coupled to the subconverters for controlling the power switches to balance currents in the subconverters over multiple periods. The control circuit includes a current compensator configured to determine a first duty cycle multiple times over the multiple periods, generate a PWM control signal having a present value of the first duty cycle for controlling the power switch of one of the subconverters during a period, determine a second duty cycle based on the present value of the first duty cycle and a previous value of the first duty cycle, and generate another PWM control signal having the second duty cycle for controlling the power switch of another one of the subconverters during the period. Other example power converters and control circuits are also disclosed.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: December 7, 2021
    Assignee: Astec International Limited
    Inventors: Yancy Fontanilla Boncato, Ronnie Bachiller Gozun
  • Patent number: 11183907
    Abstract: A method for manufacturing an electrical machine includes forming a plurality of laminations for a stator or a rotor, each lamination including a cooling aperture; stacking the laminations together, the cooling apertures being aligned to form a cooling passage; securing the stacked laminations together; and sealing the laminations together at at least one desired location by applying metal plating to the stacked and secured laminations at the at least one desired location.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: November 23, 2021
    Assignee: ABB Schweiz AG
    Inventors: Chenjie Lin, Sheng Zhong, Jing Xu
  • Patent number: 11177741
    Abstract: An AC-AC converter circuit converts an AC voltage into a further AC voltage. A rectifier circuit rectifies the AC voltage. An inverter circuit generates the further AC voltage. AZ source circuit is provided between the rectifier circuit and the inverter circuit.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: November 16, 2021
    Inventors: Yasuo Ono, Kazuhito Nakamura, Michael Haider, Dominik Bortis, Johann W. Kolar
  • Patent number: 11177735
    Abstract: During its first and second residence times, corresponding first and second currents flow between a charge pump and a circuit that connects to one of the charge pump's terminals. Based on a feedback measurement from the charge pump, a controller adjusts these first and second currents.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: November 16, 2021
    Assignee: pSemi Corporation
    Inventors: Tim Wen Hui Yu, Gregory Szczeszynski
  • Patent number: 11170964
    Abstract: A circuit breaker includes a solid-state switch, a sense resistor, a current detection circuit, and a switch control circuit. The solid-state switch and sense resistor are connected in series in an electrical path between a line input terminal and a load output terminal of the circuit breaker. The current detection circuit is configured to (i) sample a sense voltage that is generated across the sense resistor in response to load current flowing through the sense resistor, (ii) detect an over-current fault condition based on the sampled sense voltage, and (iii) output a fault detection signal in response to detecting the over-current fault condition. The switch control circuit is configured to control the solid-state switch, wherein the switch control circuit is configured to switch off the solid-state switch in response to the fault detection signal output from the current detection circuit.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 9, 2021
    Assignee: Amber Solutions, Inc.
    Inventors: Mark Telefus, Stephen C. Gerber, Damon M. Baker, Kenneth D. Alton
  • Patent number: 11152865
    Abstract: The instant disclosure concerns a power converter including: a primary stage (110) including at least one first cut-off switch (S11, S12, S13, S14); a control circuit (112) capable of applying a first control signal to said at least ore first switch; a secondary stage (130) including at least one second cut-off switch (S21, S22, S23, S24); a control circuit (132) capable of applying a second control signal to said at least one second switch; a power transmission stage (120) coupling the primary stage (110) to the secondary stage (130), wherein the control circuit (132) of the secondary stage is electrically isolated from the control circuit (112) of the primary stage.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: October 19, 2021
    Inventors: Dominique Bergogne, Pierre Perichon, Léo Sterna
  • Patent number: 11152861
    Abstract: This disclosure relates to a multiphase converter design with multi-path phase management circuit and output logic. The phase management circuit and output logic can be employed to implement phase adding and shedding operations based on input and output current information and based on control signals for a power stage of the converter. In some examples, the design employs an estimate of an average output current based on a current at an input of the converter for phase control. In additional examples, the design employs cycle-by-cycle current limit and maximum duty-cycle signals to enable phase quickly during load transient. In further examples, the design employs low input and output-current sensed signals for efficient phase shedding and power saving. The design herein improves an overall accuracy of phase adding and shedding, load transient response performance, an operational efficiency and thermal performance of multiphase converter.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: October 19, 2021
    Inventors: Wenliang Chen, Reza Sharifi, Byron Mitchell Reed, Jairo Daniel Olivares, Ryan Erik Lind
  • Patent number: 11152871
    Abstract: An alternating-current (AC) voltage regulator configured to receive an input voltage. The regulator including an AC/DC pulse-width modulated (PWM) power supply configured to receive the input voltage and output a direct-current (DC) signal isolated from the input voltage. The regulator including a control circuit configured to receive a portion of the input voltage, adjust an amplitude and a phase of the portion of the input voltage, and output the adjusted voltage. The regulator including an amplifier configured to receive, via an power input, the isolated DC signal; receive, via a first input, the adjusted voltage; receive a feedback loop from an amplifier output to a second input; and output, via the amplifier output, a differential signal. The regulator including an output configured to add the differential signal to the input voltage resulting in a regulated voltage, and output the regulated voltage.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: October 19, 2021
    Assignee: Hubbell Incorporated
    Inventor: Kenneth Edward Pagenkopf
  • Patent number: 11150677
    Abstract: Disclosed are a series regulator and electronic equipment. The series regulator includes a first amplifier that drives a first transistor connected between a power supply and a load, a second amplifier that drives a second transistor connected in parallel to the first transistor, an amplifier control circuit that controls whether or not operation of the first amplifier is possible according to the load, and a first overcurrent protection circuit that limits a first output current flowing in the first transistor to a first overcurrent set value or smaller. The first overcurrent protection circuit carries out variable control of the first overcurrent set value according to a second output current flowing in the second transistor. The electronic equipment includes the series regulator and a load that receives power supply from the series regulator and operates.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: October 19, 2021
    Assignee: ROHM CO., LTD.
    Inventor: Makoto Yasusaka
  • Patent number: 11133745
    Abstract: The present embodiments allow multiphase buck controllers to be able to detect Power-on-Reset (POR) automatically and subsequently reboot the system and reconfigure the system as a single or multi-rail system. Some embodiments use an onboard bus that can communicate between controllers. In these and other embodiments, the system is able to recover automatically from a power failure afflicting any or all of the controllers. Embodiments are applicable to flexible plug-and-play modular digital buck regulation applications.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: September 28, 2021
    Assignee: Renesas Electronics America Inc.
    Inventors: Daniel Chieng, Michael Payne, David Beck, Adam Vaughn
  • Patent number: 11133142
    Abstract: A circuit breaker is for interrupting an electric current circuit when current and/or current time period thresholds are exceeded. The circuit breaker includes at least one control unit, to which energy is supplied by an energy converter. A primary winding of the energy converter is formed by a conductor of the electric current circuit. The core of the energy conductor surrounding the electric current circuit conductor is used as the primary winding. A secondary winding surrounds a section of the core. The secondary winding additionally surrounds an inductor core, arranged relative to the core using an insulating spacer element. The secondary winding and the inductor core are at least party magnetically shielded from the primary winding by a shielding plate guided through the core.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: September 28, 2021
    Inventor: Michael Stehle
  • Patent number: 11108333
    Abstract: A system includes a DC-DC power converter including a first pair of input/output lines for connecting to a first device for supplying power to or drawing power from the first device, and a second pair of input output lines for supplying power to or drawing from a second device. The system includes at least one ultra-capacitor connected across the first pair of input/output lines.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: August 31, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Frank Z. Feng, Christopher J. Courtney
  • Patent number: 11108334
    Abstract: Provided is a power conversion device which can be configured inexpensively and in which initial charging can be performed quickly. Accordingly, the power conversion device is provided with: a power conversion device cell having a first converter for converting a first AC voltage to a first DC voltage, a second converter for converting the first DC voltage to another voltage, and a first capacitor charged by the first DC voltage; and a control circuit for allowing charging of the first capacitor while changing the operational state of the first converter in accordance with the first DC voltage.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: August 31, 2021
    Assignee: Hitachi Industrial Products, Ltd.
    Inventors: Mizuki Nakahara, Takae Shimada, Kimihisa Furukawa, Mitsuhiro Kadota
  • Patent number: 11101712
    Abstract: An electric motor, an end cap thereof and a manufacturing method of the end cap are provided. The end cap includes an insulating body and a filter circuit board mounted to the insulating body. The filter circuit board includes at least two power conductors for receiving an external power source, an insulating support frame integral with the at least two power conductors, and at least one filter element. One end of the at least one filter element is connected to a corresponding power conductor, and the other end of the at least one filter element is grounded.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: August 24, 2021
    Inventors: Yukwai Yeung, Chingsik Lau, Dawei Zhou, Siukin Tam, Tao Fu