Patents Examined by Thai H Tran
  • Patent number: 11362539
    Abstract: An artificial intelligence reactive power control system for low voltage ride-through in a grid connected distributed generation network includes a grid, a circuit breaker, a distributed generation circuit including 3-phase terminals, and a voltage and current measurement unit connected to the 3-phase terminals and configured to generate a set of measured variables. An intelligent low voltage ride-through detector receives the set of measured variables and identifies a low voltage ride-through status of the utility grid. An intelligent reactive power controller receives a low voltage ride-through status signal from the intelligent low voltage ride-through detector and controls a low voltage ride-through during a grid voltage sag and a voltage reduction by transmitting one or more of an active power reference and a reactive power reference value to the distributed generation circuit based on the low voltage ride-through status signal.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: June 14, 2022
    Assignee: King Abdulaziz University
    Inventors: Md Mottahir Alam, Ibrahim M. Mehedi, Nebras Sobahi, Asif Irshad Khan, Md. Moddassir Alam, Ahteshamul Haque, Samir Kasim, Varaha Satya Bharath Kurukuru
  • Patent number: 11348724
    Abstract: A primary-sided arrangement of primary winding structures of a system, wherein the primary-sided arrangement includes at least three phase lines and at least one winding structure per phase line, wherein each winding structure includes at least one subwinding structure, wherein the winding structures extend along a longitudinal axis of the primary-sided arrangement, wherein a pitch between corresponding subwinding structures of a first winding structure and a second winding structure is chosen from an interval of a length of one subwinding structure, and wherein a pitch between corresponding subwinding structures of the first winding structure and the third winding structure is smaller than the pitch between corresponding first and second subwinding structures.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: May 31, 2022
    Assignee: Bombardier Primove GmbH
    Inventors: Christian Wirth, Robert Czainski, Rudolf Lindt
  • Patent number: 11336186
    Abstract: The subject matter of the invention is a resonant DC-DC voltage converter, notably for an electric or hybrid vehicle, said converter including n interleaved main resonant circuits, n being a natural integer greater than or equal to two, and in which: the main resonant circuits are connected together at least one neutral point different from a ground of the converter, said neutral point being connected to a ground of the converter by an impedance configured to store energy and to enable zero voltage switching of the switches of the resonant DC-DC converter.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: May 17, 2022
    Assignee: Valeo Siemens eAutomotive Norway AS
    Inventor: Boris Bouchez
  • Patent number: 11329486
    Abstract: During initiation under an isolated island condition, the amplitude of a voltage reference wave output generated by a flexible DC transmission control and protection system is in a segmented mode, wherein a first segment of the reference wave amplitude begins at zero or a fixed value Ux and rapidly increases to Ua kV at a rate of a kV/s, avoiding a low output voltage reference wave and high error and harmonic content of a sampled voltage and current. A second segment increases to Ub kV at a rate of ? kV/s, a third segment increases to Uc kV at a rate of ? kV/s, and the Nth segment increases to a rated voltage of UN kV at a rate of ? kV/s, thereby achieving non-disturbance and shockless initiation of a flexible DC transmission system under an isolated island condition.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: May 10, 2022
    Inventors: Ke Wang, Shunke Sui, Yu Lu, Yunlong Dong, Zhaoqing Hu, Gang Li
  • Patent number: 11322941
    Abstract: A method of controlling output of an ESS depending on droop control according to frequency variation range of a power grid in the present invention may comprise steps of: monitoring the frequency variation range of the power grid; predicting frequency correction range resulting from regulation of an engine generator during a predetermined unit regulation time if the frequency variation range is determined to exceed a first reference value; controlling the output of the ESS with an output value determined by a frequency of the power grid according to a droop control algorithm set as a default if the predicted frequency correction range does not exceed a second reference value; and fixing the output of the ESS during the unit regulation time if the predicted frequency correction range exceeds the second reference value.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: May 3, 2022
    Inventors: Dae Geun Jin, Bo Gun Jin
  • Patent number: 11293394
    Abstract: Methods and systems are provided for a starter motor system for cranking an engine. In one example, a starter motor system includes, a battery, two electric motors arranged in series, two main contactors, two auxiliary contactors, and two solenoid contactors. Each of the two electric starter motors may be simultaneously energized to crank the engine in tandem after the pinion gears of both the electric motors are coupled to the ring gear of the engine.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: April 5, 2022
    Assignee: Transportation IP Holdings, LLP
    Inventors: Sagar Banerjee, Rajeev R. Verma
  • Patent number: 11296547
    Abstract: Disclosed are a distribution transformer terminal and a method for monitoring a state of a distribution transformer court device. The distribution transformer terminal includes an ARM core processor, a carrier communication module connected to a court device, a sub-G wireless communication module connected to the court device and a GPS module connected to the court device. The ARM core processor is connected to the carrier communication module, the sub-G wireless communication module and the GPS module. The ARM core processor is configured to identify a phase of the court device and a court to which the court device belongs, acquire an operating state and fault information of the court device through the sub-G wireless communication module, and acquire geographical location information of the court device through the GPS module.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: April 5, 2022
    Inventors: Yi Ding, Pan Zhang, Yu Zhang, Ping Tang, Ning Jiang, Yanjun Wen, Haibiao Wang, Xudong Wang, Qinghu Hu, Xianxu Huo, Chao Huang, Yan Qi, Wangxi Xue, Guodong Li, Ke Xu, Qiuliang Jiao
  • Patent number: 11289910
    Abstract: A method and apparatus for setting an impedance of a power conditioning unit (PCU). In one embodiment, the method comprises applying a disturbance to a virtual AC voltage produced by a power conditioning unit (PCU) that is coupled to a power grid, where the disturbance has a first phase; measuring a second phase of the applied disturbance on the power grid; comparing the second phase of the applied disturbance to the first phase of the disturbance; and adjusting, when the second phase differs from the first phase by more than a threshold amount, an impedance of the PCU.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: March 29, 2022
    Assignee: Enphase Energy, Inc.
    Inventor: Donald Richard Zimmanck
  • Patent number: 11258348
    Abstract: A filter component such as an EMC filter and a method for using an filter component are disclosed. In an embodiment, a filter component includes a resonant circuit having an inductance and at least one capacitor that is connected in series with the inductance, wherein the resonant circuit is designed and arranged for attenuating harmonics in a longwave band.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: February 22, 2022
    Assignee: EPCOS AG
    Inventor: Fabian Beck
  • Patent number: 11258299
    Abstract: A method for generating charge for a service disconnect operation for an electric meter includes: charging a service disconnect capacitor for an electric meter to a voltage higher than a voltage provided by a power supply of the electric meter; monitoring the voltage on the service disconnect capacitor; receiving, by the electric meter, a service disconnect switch instruction signal; determining, based on the monitoring, whether the voltage on the service disconnect capacitor exceeds a specified voltage threshold value; and in response to receiving the service disconnect switch instruction signal and determining that the voltage on the service disconnect capacitor exceeds the specified voltage threshold value, discharging the service disconnect capacitor through windings of a service disconnect actuator. The service disconnect actuator may be configured to cause contacts of a service disconnect switch to change position to make or break a circuit connection between a line voltage and a load.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: February 22, 2022
    Assignee: Landis+Gyr Innovations, Inc.
    Inventor: Doug Busekrus
  • Patent number: 11251656
    Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. The wireless power transmitting device may be a wireless charging mat with one or more coils or may be a wireless charging puck with one or more coils. In some embodiments, the wireless charging puck may have six coils or other number of coils arranged in a ring. The wireless power receiving device may have an elongated magnetic core such as a C-shaped core with pillars at opposing ends. First and second coils may be formed on the pillars and a third coil may be formed between the first and second coils. The coils of the wireless power receiving device such as the first and second coils on the magnetic core may be configured to receive magnetic flux emitted by a pair of the six coils in the wireless charging puck.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: February 15, 2022
    Assignee: Apple Inc.
    Inventors: Saining Ren, Ho Fai Leung, Liang Chen
  • Patent number: 11251652
    Abstract: Embodiments of the present application provide a wireless energy transmission method and device. A method includes: generating a visible light communication signal according to wireless energy transmission intensity between a wireless energy sending device and a wireless energy receiving device; and sending the visible light communication signal. A signal can be transmitted (or received) related to wireless energy transmission intensity through visible light communication, to enable a user to easily obtain information about wireless energy transmission intensity.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: February 15, 2022
    Inventors: Ran Xu, Weicai Huang
  • Patent number: 11218023
    Abstract: The present disclosure relates to a recloser control that detects islanding based on a continuous analysis of frequency and rate of change of frequency. For example, a recloser control may include protection circuitry that is communicatively coupled to a recloser. The recloser control may receive measurements of an electrical characteristic in an electric power delivery system. The recloser control may determine frequency (F) and a rate of change of frequency (ROCOF) based on the received measurements. The recloser control may detect islanding of a microgrid in the electric power delivery system based at least in part on F and ROCOF. The recloser control may send a signal to the recloser to trip the recloser based on the islanding of the microgrid.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: January 4, 2022
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Scott M Manson, Craig Thompson
  • Patent number: 11209465
    Abstract: The present disclosure relates to a capacitor bank control system that uses a combination of line post sensors and wireless current sensors for control operations. For example, a capacitor bank controller may include one or more inputs that electrically couple to a line post sensor to allow the capacitor bank controller to obtain line post sensor measurements. The capacitor bank controller may include a transceiver that receives wireless current sensor measurements from first and second wireless current sensors. The capacitor bank controller may include a processor that controls one or more switching devices of a capacitor bank based at least in part on a combination of line post sensor measurements and wireless current sensor measurements.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: December 28, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventor: Kei Hao
  • Patent number: 11204614
    Abstract: A current balance circuit including a current sensing front end for sensing an output signal from each of a plurality of switching regulators and a current sensor for receiving the sensed output signal and converting the sensed signal into a sensed current signal. The current balance circuit further includes a current averaging circuit for receiving the sensed output signals and determining an average current output for the plurality of switching regulators and a current difference circuit for receiving the average current value and the sensed current signals and determining a current difference for each of the plurality of switching regulators. A calibration circuit is included for receiving the current differences and calculating a calibration value corresponding to each of the plurality of switching regulators which provides an indication of how to adjust a current output of the plurality of switching regulators to balance the current across the plurality of switching regulators.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 21, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ying-Chih Hsu, Alan Roth, Eric Soenen
  • Patent number: 11201558
    Abstract: An operating circuit and a method for operating a synchronous machine on a voltage supply network is disclosed. The operating circuit has a converter circuit with controllable converter switches and a controllable switching arrangement to switch the converter circuit between a start converter configuration and a direct converter configuration. The power supply network is connected to a converter output and the synchronous machine is connected to a converter input of the converter circuit. In the direct converter configuration, an AC voltage is provided at the converter output with a preset AC voltage frequency. In the direct converter configuration, the switching of the AC voltage between the converter input and the converter output takes place without intermediate rectification.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: December 14, 2021
    Assignee: GE Energy Power Conversion Technology Limited
    Inventors: Hani Sebastian Hildebrandt, Stefan Reschberger
  • Patent number: 11196253
    Abstract: The invention relates to a method and system for electronic current control for a flexible DC battery pack, in which the battery pack has a plurality of flexibly interconnectable modules having a respective energy store and at least two respective controllable switches and the modules are electrically connected to one another to form a section having a first and a second section end and the two section ends are connected to a respective high-voltage connection, in which the at least two switches of a respective module interrupt a battery current I or interconnect the respective energy store at least in series or parallel with or to bypass the respective energy store of the respectively adjacent module, in which the flexible interconnection of the modules is controlled by a battery control unit and hence a prescribed DC voltage V is provided.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: December 7, 2021
    Inventor: Stefan Goetz
  • Patent number: 11179559
    Abstract: Methods and apparatus for wireless power transfer and communications are provided. In one embodiment, a wireless power transfer system comprises an external transmit resonator configured to transmit wireless power, an implantable receive resonator configured to receive the transmitted wireless power from the transmit resonator, and a user interface device comprising a resonant coil circuit, the resonant coil circuit being configured to receive magnetic communication signals from the transmit resonator or the receive resonator and to display information relating to the magnetic communication signals to a user of the user interface device.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: November 23, 2021
    Assignee: TC1 LLC
    Inventor: John Freddy Hansen
  • Patent number: 11170931
    Abstract: In a system for an inductive energy transmission from a primary-conductor system, in particular a stationary primary conductor system, to a vehicle having a secondary winding, the secondary winding is inductively coupled with the primary-conductor system. The primary conductor is installed as a primary-conductor loop installed in elongated form, which has a feed conductor and a return conductor in a line section, in particular a return conductor that is installed parallel thereto, and the return conductor is electrically grounded in that at least one inductance is disposed between the return conductor and the electrical ground.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: November 9, 2021
    Inventors: Leobald Podbielski, Jochen Mahlein, Thomas Uhl, Andreas Böser
  • Patent number: 11171490
    Abstract: A cascading regulation system connected to a number of serially connected power sources and uses multiple regulators having different cutoff voltages to provide an output for the local power consumption unit. Each of the regulators is connected to a subset of serially connected power sources and so configured that if the voltage generated at the lowest tap is no longer sufficient for a stable supply to the local power consumption unit, the next higher regulator takes over, and the output voltage drops in small steps reflective of that takeover of the next higher tap. When the voltage generated across a subsection grows, a lower connected tap may take over again, producing a slightly higher output voltage for the local power consumption unit. The cutover steps are chosen such that the output voltage range matches the range given as the acceptable input range for the local power consumption unit.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 9, 2021
    Assignee: Tigo Energy, Inc.
    Inventors: Shmuel Arditi, Daniel Eizips, Mordechay Avrutsky