Patents Examined by Fred E Finch, III
  • Patent number: 11146071
    Abstract: A coordinated control method for series voltage source converter valve groups comprises: allocating a total direct-current voltage reference value or a total active power reference value at the end where a direct-current electrode series voltage source converter valve group is located according to the total number of voltage source converter valve groups in series; for a direct-current voltage control end, controlling the direct-current voltage of each valve group according to the assigned direct-current voltage reference value for each valve group; for an active power control end, controlling the active power of each valve group according to the assigned active power reference value for each valve group and based on adding the active power compensation amount of the valve group which has voltage equalization effects on the valve group. Correspondingly, also providing a coordinated control device for series voltage source converter valve groups.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: October 12, 2021
    Assignees: NR ELECTRIC CO., LTD., NR ENGINEERING CO., LTD.
    Inventors: Jiang Lu, Yu Lu, Yunlong Dong, Yongping Wang, Jie Tian, Haiying Li, Zhaoqing Hu, Nannan Wang, Ke Wang, Jiudong Ding
  • Patent number: 11146179
    Abstract: A device includes: a first power conversion circuitry configured to convert primary-side power into secondary-side power; and a control circuitry configured to: generate a command value associated with the secondary-side power; calculate a limited command value by modifying the command value so that the command value is equal to or less than a secondary-side limit, wherein the first power conversion circuitry is controlled based on the limited command value; transmit the limited command value to a second power conversion device comprising a second power conversion circuitry connected in parallel to the first power conversion circuitry; receive, from the second power conversion device, information indicating an adjustment value, wherein the adjustment value is added to the limited command value for controlling the second power conversion circuitry; and modify the secondary-side limit based on a difference between a primary-side limit associated with the primary-side power and the adjustment value.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: October 12, 2021
    Inventors: Akira Yamazaki, Kentaro Inomata, Masato Higuchi
  • Patent number: 11139739
    Abstract: A switch-mode power supply controller controls a circuit that includes a flyback-based, switch-mode power supply in the context of an input voltage source, a USB Type-C PD controller and an output load. The switch-mode power supply controller may be configured to estimate input voltage based on a measured magnetizing inductance discharge time. Furthermore, the switch-mode power supply controller may be configured to estimate output voltage based on the measured magnetizing inductance discharge time and the estimated input voltage. Still further, the estimated voltages may be used by the switch-mode power supply controller to limit certain currents and optimize power efficiency. Even further, the estimated and measured value may be employed by the switch-mode power supply controller to estimate and indicate brownout conditions.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: October 5, 2021
    Assignee: Appulse Power Inc.
    Inventors: Aleksandar Radic, Seyed-Behzad Mahdavikhah-Mehrabad
  • Patent number: 11121645
    Abstract: A converter station has two line-commutated converters for energy transmission via a bipolar high voltage direct current transmission line. In a first operating mode of the converter station the two converters are electrically connected in an anti-parallel circuit to the same pole of the high voltage direct current transmission link and one of the converters is operated as a rectifier and the other converter is operated as an inverter in an network. In a second operating mode the two converters are connected to different poles of the high voltage direct current transmission link and both converters are operated as either rectifiers or inverters in the AC network. In both operating modes a station active power exchanged between the converter station and the AC network is controlled by active power specifications for converter active powers which are exchanged between the converters and the AC network.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: September 14, 2021
    Assignee: Siemens Aktiengesellschaft
    Inventors: Johann Messner, Nicolas Soellner
  • Patent number: 11119524
    Abstract: A selectable output current mirror may include a reference leg configured to generate a reference current, an output leg electrically coupled to the reference leg in a manner such that the output leg is configured to generate at an output of the output leg an output current proportional to the reference current, wherein the output leg comprises an output leg transistor, a drain path switch coupled between a first non-gate terminal of the output leg transistor and the output of the output leg, and a series combination of a degeneration resistor and a degeneration path switch coupled between a second non-gate terminal of the output leg transistor and a voltage source to the selectable output current mirror.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: September 14, 2021
    Assignee: Cirrus Logic, Inc.
    Inventors: Christopher M. Dougherty, Anindya Bhattacharya, Vaibhav Pandey, Ying Ou
  • Patent number: 11114257
    Abstract: Some embodiments are directed to an apparatus for detecting and suppressing DC electric arcs at a component, and are particularly adapted for vehicle wiring harnesses. The apparatus can include a detector circuit electrically connected to input and output terminals so as to be electrically connected in parallel to the component, the detector circuit being configured to detect a significant voltage spike across the component upon the component actuating between open and closed positions. The detector circuit can also be configured to transmit a control signal upon detecting the significant voltage spike. The detector circuit can include multiple circuit elements, enabling both the detection of the significant voltage spike and the transmission of the control signal, that are directly electrically connected to each other. A switching circuit conducts electricity from the power source side of the component to the load side of the component upon receipt of the control signal.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: September 7, 2021
    Assignee: YAZAKI NORTH AMERICA, INC.
    Inventor: Yuanyuan Wu
  • Patent number: 11114849
    Abstract: The present invention provides both a margin of a discharge start voltage with respect to a power supply voltage and a margin of a clamp voltage with respect to a breakdown withstand voltage of an internal circuit. The semiconductor device according to the embodiment includes a first amplifier circuit for amplifying a detection signal and outputting a drive signa, a second amplifier circuit for feedback-amplifying the detection signal to be input to the first amplifier circuit, and a discharge element whose discharge capability changed according to the magnitude of the drive signal.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: September 7, 2021
    Assignee: RENESA.S ELECTRONICS CORPORATION
    Inventor: Koki Narita
  • Patent number: 11114933
    Abstract: System and method for protecting a power converter. An example system controller for protecting a power converter includes a signal generator, a comparator, and a modulation and drive component. The signal generator is configured to generate a threshold signal. The comparator is configured to receive the threshold signal and a current sensing signal and generate a comparison signal based on at least information associated with the threshold signal and the current sensing signal, the current sensing signal indicating a magnitude of a primary current flowing through a primary winding of a power converter. The modulation and drive component is coupled to the signal generator.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: September 7, 2021
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Chao Yao, Yunchao Zhang, Yuan Lin, Zhiqiang Sun, Lieyi Fang
  • Patent number: 11114850
    Abstract: An electrostatic discharge protection circuit includes a first internal circuit formed between a first power line and a first ground line, and configured to operate in a range between a first power and a first ground; a second internal circuit formed between a second power line and a second ground line, and configured to operate in a range between a second power having a level higher than the first power and a second ground; a signal line connecting an output terminal of the first internal circuit and an input terminal of the second internal circuit; and a protection circuit configured to form a bypass path for bypassing a stress due to electrostatic discharge when the electrostatic discharge occurs, between the signal line and the second ground line, to protect a semiconductor device of the second internal circuit from the electrostatic discharge.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: September 7, 2021
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jae Min Kim, Jae Hyun Lee, Yong Nam Choi
  • Patent number: 11108322
    Abstract: A multi-phase switch-mode power supply to control an output in two possible modes is disclosed. A first mode can be applied for normal load conditions. In the first mode, control is achieved using an error signal based on a difference between an output voltage and a set voltage level. In heavy load conditions a load attempts to draw too more power than the switch-mode power supply can provide. As a result, control of the output voltage is lost and the current of each phase becomes saturated at a limit. When this condition is detected, a second mode can be applied. In the second mode, control is achieved using an error signal based on a difference between an output current and a set current level. The set current level is chosen so that the current of each phase is no longer saturated and control of the output current is maintained.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: August 31, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Han Zou
  • Patent number: 11095223
    Abstract: Methods and systems for ripple suppression in multi-phase buck converters may comprise a buck converter for providing an output DC voltage with controlled ripple current. The buck converter may include one or more main buck converter stages with coupled outputs and one or more harmonic suppression buck converter stages in parallel with the one or more main buck converter stages. The one or more suppression buck converter stages may provide suppression currents at the coupled outputs to cancel ripple currents generated in the one or main buck converter stages. Each of the one or more main buck converter stages and each of the one or more suppression buck converter stages may include a stacked transistor pair with an inductor at an output. A drain terminal of one transistor of each transistor pair in the one or more main buck converter stages may be biased at a first supply voltage.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: August 17, 2021
    Assignee: MaxLinear, Inc.
    Inventors: Curtis Ling, Shantha Murthy Prem Swaroop, Vinit Jayaraj
  • Patent number: 11095228
    Abstract: An active clamp circuit includes an active clamp capacitor coupled in series with an active clamp switch and an active clamp controller circuit to receive an active clamp switch current that passes through the active clamp switch and to control the active clamp switch based on the received active clamp switch current. The active clamp controller circuit is configured to enable the active clamp switch based on a first amplitude comparison, the first amplitude comparison being based on the active clamp switch current. The active clamp controller circuit is configured to disable the active clamp switch based on a second amplitude comparison and a third amplitude comparison, the second amplitude comparison and the third amplitude comparison being based on the active clamp switch current.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: August 17, 2021
    Assignee: Appulse Power Inc.
    Inventor: Aleksandar Radic
  • Patent number: 11095209
    Abstract: The present invention provides a power control circuit and a power device using the power control circuit, wherein quasi resonance is performed by the power control circuit using a coil, current flowing in the coil is monitored by a simple configuration, and a zero cross point or a bottom in resonance is detected. The present invention provides a power control circuit and a power device using the power control circuit. The power control circuit includes a detection circuit connected to a drain of MOSFET, the MOSFET serially connected between an inductor connected to an alternating-current wire and a current sensing resistor connected to ground potential; and a quasi resonance control circuit connected to the detection circuit and the MOSFET for performing quasi resonance control to inductor-current at a zero cross point or a bottom point in a time sequence of discharging while conducting the inductor-current of the inductor.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: August 17, 2021
    Assignee: ROHM CO., LTD.
    Inventor: Yoshinori Imanaka
  • Patent number: 11095117
    Abstract: Example DC-DC power distribution systems include electronic communication device(s), a circuit breaker DIN rail adapted to receive a circuit breaker for providing electrical protection to the one or more electronic communication devices, and a DC-DC converter including a housing having a DIN rail mount, a voltage input and a voltage output. The DC-DC converter includes a DC-DC voltage converter circuit coupled between the voltage input and the voltage output, and a controller electrically coupled with the DC-DC voltage converter circuit. The DC-DC converter is mounted on the circuit breaker DIN rail via the DIN rail mount of the DC-DC converter housing, and the controller is configured to control the DC-DC voltage converter circuit to convert a DC voltage at the voltage input to a different DC voltage at the voltage output to supply power to the one or more electronic communication devices.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: August 17, 2021
    Assignee: Vertiv Corporation
    Inventors: Timothy Brooklyn Strouse, Michael Francis Smith, Paul Brian Hiidel
  • Patent number: 11095118
    Abstract: A method of controlling discharge of a holdup capacitor in a power system having a voltage source, a holdup capacitor and a load. The method including operably connecting the voltage source to the load, monitoring a first voltage of the voltage source, and if the first voltage of the voltage source drops below a selected threshold, directing energy from the holdup capacitor to the load via a first path, and directing energy from the holdup capacitor to the load via a second path if a selected condition is satisfied.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: August 17, 2021
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Pervaze Humayun, Midhun M. Hegden
  • Patent number: 11095203
    Abstract: In a high-frequency line filter for a converter, the converter has three phase connections for receiving a three-phase alternating signal from a three-phase voltage network and is adapted to convert the received three-phase alternating signal into an output signal for a load. The high-frequency line filter includes: a first filter path for establishing a conductive connection between a first phase connection of the three phase connections and a ground connection; a second filter path for establishing a conductive connection between a second phase connection of the three phase connections and the ground connection; and a third filter path for establishing a conductive connection between a third phase connection of the three phase connections and the ground connection. The high-frequency line filter includes a series connection of a pulse-proof capacitor and a parallel connection of at least two Y capacitors, the series connection being provided in each filter path.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: August 17, 2021
    Assignee: DR. JOHANNES HEIDENHAIN GmbH
    Inventors: Simon Heinrich, Franz Gramsamer
  • Patent number: 11088626
    Abstract: The power supply apparatus of a synchronous rectification systems includes a current detection unit configured to detect a current for charging a secondary-side smoothing element, and a driving unit configured to drive a rectification unit based on a detection result by the current detection unit.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: August 10, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Minoru Hayasaki, Kazuki Soneta
  • 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: 11088627
    Abstract: A switching power supply circuit with synchronous rectifier has an energy storage component, a rectifier switch coupled to a secondary side of the energy storage component, and a secondary side control circuit. The secondary side control circuit provides a driving signal to control the rectifier switch. When the drain-source voltage across the rectifier switch is less than a first threshold value, the secondary side control circuit controls the driving signal to be a maximum voltage to control the rectifier switch being fully on for a predetermined duration. After a predetermined duration, the secondary side control circuit adjusts the voltage of the driving signal based on the drain-source voltage across the rectifier switch and a second threshold value.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: August 10, 2021
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventor: Siran Wang
  • Patent number: 11079424
    Abstract: Example embodiments of the invention include a powdered core bead body configured to become an inductive impedance to current signals in a power wire with high frequencies. The signals are detectable by a high frequency voltage sensor, which is configured to output an arc fault tripping indication to an arc fault tripping circuit. The bead body includes a magnetic flux-density sensing device embedded in an air cavity of the bead body, having a magnetic field sensing surface oriented substantially perpendicular to the circumferential periphery of the bead body. The bead body is configured to provide measurable magnetic flux through the magnetic flux-density sensing device, for currents in the power wire having low frequencies. The measurable magnetic flux is detectable by a low frequency magnetic flux-density sensing device, to output a low frequency current measurement for power metering devices or to determine power consumption within a protected branch.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: August 3, 2021
    Assignee: Schneider Electric USA, Inc.
    Inventors: Andi Jakupi, Robert Isaacson, Carlton R. Rodrigues