Patents Examined by Stephen W. Jackson
  • Patent number: 11183832
    Abstract: Methods, systems, and apparatus to facilitate a fault triggered diode emulation mode of a transistor. An example apparatus includes a driver to output a control signal to a gate terminal of a transistor of a power converter; and a diode emulation control circuit to, in response to determining a fault corresponding to the transistor, enable the transistor when current flows in a direction from a source terminal of the transistor to a drain terminal of the transistor.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: November 23, 2021
    Inventors: Serkan Dusmez, Nathan Richard Schemm, Salil Chellappan
  • Patent number: 11177644
    Abstract: A circuit may include an electronic switch that has a load current path coupled between an output node and a supply node and that is configured to connect or disconnect the output node and the supply node in accordance with a drive signal. Further, the circuit includes a monitoring circuit that is configured to receive a current sense signal, which represents the load current passing through the load current path, and that is further configured to determine a protection signal based on the current sense signal, a state of the monitoring circuit, and at least one wire parameter. The wire parameter characterizes a wire that is—during operation—connected to the output node, and the protection signal is indicative of whether to disconnect the output node from supply node. Further, the circuit includes a protection circuit connected to the monitoring circuit.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: November 16, 2021
    Assignee: Infineon Technologies AG
    Inventors: Alexander Mayer, Robert Illing, Marco Faricelli
  • Patent number: 11165246
    Abstract: An overvoltage protection device includes a first electrode member, a second electrode member, and a varistor assembly. The varistor assembly includes: a plurality of varistor wafers each formed of a varistor material; and at least one electrically conductive interconnect member connecting the varistor wafers in electrical parallel between the first and second electrode members. The varistor wafers are axially stacked between the first and second electrodes.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: November 2, 2021
    Assignee: RIPD Research and IP Development Ltd.
    Inventors: Tine Tav{hacek over (c)}ar, Sa{hacek over (s)}a Rustja, Alexis Chorozoglou, George Peppas, Fotis Xepapas, Zafiris G. Politis
  • Patent number: 11165241
    Abstract: Various implementations described herein are directed to a method for detecting, by a device, an increase in temperature at certain parts of an electrical system, and taking appropriate responsive action. The method may include measuring temperatures at certain locations within the system and estimating temperatures at other locations based on the measurements. Some embodiments disclosed herein include an integrated cable combining electrical conduction and heat-detection capabilities, or an integrated cable or connector combining electrical conduction with a thermal fuse.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: November 2, 2021
    Assignee: Solaredge Technologies Ltd.
    Inventors: Yoav Galin, Meir Adest, Israel Gershman, Guy Sella
  • Patent number: 11159084
    Abstract: A method of operating a power protection system coupled between a power source and a power converter includes producing, by a controller of the power protection system, a driving signal to a cut-off switch of the power protection system to electrically couple the power source to the power converter; detecting, by the controller of the power protection system, a fault condition of the power converter while the power converter is in operation, where the detecting includes detecting, by the controller of the power protection system, that a current flowing through the cut-off switch is above a pre-determined threshold while a gate control signal from the power converter indicates an OFF state for a first current path of the power converter; and in response to detecting the fault condition, turning off, by the controller of the power protection system, the cut-off switch to isolate the power source from the power converter.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: October 26, 2021
    Assignee: Infineon Technologies AG
    Inventors: Cristian Garbossa, Enrico Orietti
  • Patent number: 11159010
    Abstract: A method for providing negative sequence current to a bus of an IBR-based power system includes the steps of monitoring phase voltages at terminals connected to the power system and determining a reference phasor of a negative sequence voltage incident on the terminals. A rotation phasor is applied to the reference phasor based on an angular offset between a negative sequence voltage and a corresponding negative sequence current to obtain a first outbound negative sequence current having a first magnitude and a first phase angle. The first outbound negative sequence current is scaled to obtain a second outbound negative sequence current having a second magnitude that is different from the first magnitude and is oriented at the first phase angle. The second outbound negative sequence is provided to the bus of the power system.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: October 26, 2021
    Inventor: Russell W. Patterson
  • Patent number: 11150035
    Abstract: Systems according to the present disclosure provide one or more surfaces that function as power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface wave causes near replication of current present in one fractal cell in an adjacent fractal cell. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges. The fractal plasmonic surfaces can be utilized to facilitate electrical conduction with lower ohmic resistance than would otherwise be possible in the absence of the fractal plasmonic surface(s) at the same temperature.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: October 19, 2021
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Patent number: 11143687
    Abstract: The present disclosure relates to systems and methods of detecting discharge events on power lines. For example, a system may include an acoustic sensor that detects a sound wave emitted from a power line. The system may include a radio frequency (RF) sensor that detects a radio wave emitted from the power line. The system may include electrical sensor circuitry that detects an electrical parameter of power being delivered on the power line. The system may include a processor that determines that a discharge event has occurred based on the sound wave, the radio wave, and the electrical characteristic. The system may provide an output signal indicating that the partial discharge event has occurred.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: October 12, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Scott M. Manson, Shankar V. Achanta, Gregary C. Zweigle
  • Patent number: 11143713
    Abstract: A semiconductor integrated circuit for leak current detection which outputs an interruption signal to cut off electrical power supplied by a power supply to an electric line if a leakage current occurs including a leakage current processing unit and an output unit configured to output the interruption signal. The leakage current processing unit includes: a zero-power supply voltage detector; a counter when the power supply voltage pulse signal is input; a zero-input induction voltage detector configured to output a leakage current pulse signal whenever the input induction voltage becomes 0 V; a counter latch configured to latch a count value supplied by the counter and output the latched count value; an output induction voltage setting unit configured to calculate an output induction voltage; and a comparator configured to compare the output induction voltage with a predetermined trip level.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: October 12, 2021
    Inventor: Sun-Jung Kim
  • Patent number: 11143714
    Abstract: A leakage current protection system includes a current transformer disposed about current-carrying conductors that extend from first ends to second ends. The first ends are coupled to load receptacles. The current transformer detects an aggregate differential current between the conductors. Each of a plurality of circuit breakers is coupled to the second ends of the conductors that are coupled to a corresponding one of the load receptacles. Each circuit breaker is coupled to a source of electrical power. A differential current monitor coupled to the current transformer generates a signal when the aggregate differential current exceeds a threshold current. Each of a plurality of shunt-trips coupled to the differential current monitor receives the signal. Each of the shunt-trips opens a corresponding one of the circuit breakers when the signal is received so that all of the circuit breakers are opened simultaneously.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: October 12, 2021
    Inventors: Robert C. Dively, Alston G. Brooks
  • Patent number: 11132322
    Abstract: A controller, comprising: a processing resource; and a memory resource storing machine-readable instructions to cause the processing resource to: activate a detection signal to enable a transistor coupled to the controller; determine a voltage associated with a plurality of hot swap controllers; and determine, in view of the voltage, a quantity of hot swap controllers included in the plurality of hot swap controllers.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: September 28, 2021
    Assignee: Hewlett. Packard Enterprise Development LP
    Inventors: Michael Delany, Howard Leverenz, Dylan A Quiroz
  • Patent number: 11133662
    Abstract: An adaptor for connecting a power source to a power tool includes a housing having a first end that is configured to connect to a power source and a second end that is configured to connect to a power tool. The adaptor includes a control circuit disposed within the housing. The control circuit is configured to detect a type of the power tool, to detect an overstress condition in the power tool and to control the power tool responsive to detecting the overstress condition based on the detected type of power tool.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: September 28, 2021
    Assignee: Black & Decker Inc.
    Inventors: Brian E. Friedman, Bhanuprasad V. Gorti, Christopher R. Held, Abhisheka Moturu, Michael Varipatis, Paul J. Wisniewski, Michael W. Roberts
  • Patent number: 11133123
    Abstract: The invention is a pulse control device which combines an electric motor and/or inductors. It can be used in electromagnetic devices and electrical machines, such as electric motors, generators, and transformers, as a control unit in combination with an electric motor and/or a combination of inductors. The invention creates an increase in the efficiency of an electromagnetic device based on inductance while reducing consumption and saving energy consumed from the power supply. In addition, the power supply is additionally protected from self-induction, which increases the reliability of the device. The present invention also discloses a method of saving energy in electromagnetic devices.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: September 28, 2021
    Assignee: Base Field Power Limited
    Inventors: Sergey Valentinovich Eller, Igor Yuryevich Bredikhin, Mikhail Petrovich Gorden
  • Patent number: 11128290
    Abstract: Systems, methods, techniques and apparatuses of short circuit protection are disclosed. One exemplary embodiment is a method for protecting a semiconductor switch comprising receiving a measurement corresponding to an electrical characteristic of the semiconductor switch; determining a semiconductor switch resistance value using the received measurement; estimating a junction temperature of the semiconductor switch using the semiconductor switch resistance value; determining a short circuit voltage threshold using the estimated junction temperature; comparing the short circuit voltage threshold to a test voltage corresponding to a drain-source voltage of the semiconductor switch; determining a short circuit condition is occurring in response to comparing the short circuit voltage threshold and the test voltage; and opening the semiconductor switch in response to determining the short circuit condition is occurring.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: September 21, 2021
    Assignee: ABB Schweiz AG
    Inventors: Eddy Aeloiza, Arun Kumar Kadavelugu
  • Patent number: 11128115
    Abstract: The present disclosure relates to arc fault detection in an electrical switch apparatus. In aspects of the present disclosure, an arc fault electrical switch apparatus includes a conductive path, a switch configured to interrupt electrical current in the conductive path, a current sensor in electrical communication with the conductive path and configured to measure the electrical current to provide current measurements, and a controller. The controller is configured to execute instructions to sample the current measurements to provide current samples, computing an estimated signal-to-noise ratio of the electrical current based on at least a portion of the current samples, determine whether the signal-to-noise ratio is less than a predetermined threshold, and activate the switch to interrupt the electrical current in the conductive path, if the signal-to-noise ratio is less than the predetermined threshold.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: September 21, 2021
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Steven Kay, Yazhou Zhang, Alan Neal, Ankit Sanghvi, Michael Ostrovsky
  • Patent number: 11114847
    Abstract: A high bandwidth data interface in an aircraft includes a pulse tolerant, non-inductive resistor for reducing surge current due to lightning transients, and a very low capacitance transient voltage suppressor to suppress the lightning transient voltages. A cable equalizer/redriver then recovers the original high bandwidth input signal. The high bandwidth interface is thereby able to survive DO-160 section 22 level 3 and 4 lightning transients.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: September 7, 2021
    Assignee: Rockwell Collins, Inc.
    Inventor: Lawrence M. Blumer
  • Patent number: 11115019
    Abstract: Circuitry includes a pair of switches arranged in series, and a gate driver. The gate driver, responsive to a magnitude of current through one of the switches exceeding a threshold, discharges a gate of the one through a first resistor. The gate driver also, responsive to a voltage across a parasitic inductance of the switch becoming zero, discharges the gate through a second resistor but not the first resistor.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: September 7, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Xi Lu, Chingchi Chen
  • Patent number: 11114842
    Abstract: A component includes first and second switches in series and connected between a power source and a coil of contacts of a safety relay. A first controller controls the first switch with a close signal that closes the first switch or a first PWM signal that opens and closes the first switch on each PWM cycle. A second controller controls the second switch with a close signal that closes the second switch or a second PWM signal that opens and closes the second switch on each PWM cycle. A PWM sensing circuit connected to the coil sends a sensed PWM signal to an input of the first and second controllers. The first controller sends the first PWM signal while the second controller sends a close signal and vice-versa. The controllers verify that the received PWM signal matches the sent PWM signal.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: September 7, 2021
    Inventors: Yanbin Zhang, Yutao Wang, David M. Messersmith, David B. Berman
  • Patent number: 11108221
    Abstract: Electrical protection systems and methods, of which an exemplary method comprises: measuring a voltage and an electric current in an electric link; calculating, repeatedly, from the measured values of current, a first moving average and a second moving average, the second moving average being calculated over a duration longer than the first moving average; comparing the measured voltage value with a predefined voltage threshold value; comparing the current value of the first moving average with the current value of the second moving average; and identifying a condition of trigger of the protection device when the measured voltage value is lower than the predefined voltage threshold value for a duration longer than a predefined duration threshold and when the current value of the first moving average is higher than the current value of the second moving average.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: August 31, 2021
    Assignee: Schneider Electric Industries SAS
    Inventor: Yannick Neyret
  • Patent number: 11107625
    Abstract: Provided is an ignition coil device for an internal combustion engine, including: an insulating case; an ignition coil device main body accommodated inside the insulating case, the ignition coil device main body including: a coil assembly; a center core arranged on an inner side of the coil assembly along a center axis of the coil assembly; a side core arranged on an outer side of the center core and the coil assembly; and an elastic cover provided to the side core; an igniter, which is accommodated inside the insulating case; and a filler, which is provided so as to fill the insulating case and is hardened, wherein the elastic cover includes: a covering portion configured to cover the side core; and a protruding portion, which protrudes from the covering portion, and is configured to relax a stress generated in the filler.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: August 31, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuma Sumitomo, Nobuyuki Sawazaki, Mitsuharu Hashiba