Diode Patents (Class 363/126)
  • Patent number: 11909326
    Abstract: An apparatus includes an isolated power converter having an input connected to an input dc power source, a first output and a second output, and a non-isolated power converter having an input connected to the second output of the isolated power converter, wherein the first output of the isolated power converter and an output of the non-isolated power converter are connected in series.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: February 20, 2024
    Assignee: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Heping Dai, Liming Ye, Dianbo Fu, Daoshen Chen
  • Patent number: 11881758
    Abstract: The present disclosure provides a display device, which enables minimization of a transformer circuit and which can be driven using various commercial voltages, and a method for controlling the display device. The display device according to an embodiment comprises: a display; a transformer which transforms commercial power and supplies the transformed commercial power to the display and which includes a plurality of switching devices; and a controller for determining, on the basis of the magnitude of an input voltage input to the transformer, whether or not to open at least one of the plurality of switching devices, and controlling the plurality of switching devices on the basis of an output voltage of the transformer to perform a modulation control of the output voltage to follow a predetermined reference voltage.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: January 23, 2024
    Assignees: SAMSUNG ELECTRONICS CO., LTD., KOOKMIN UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION
    Inventors: Du Hee Jang, Sang-Kyoo Han, Sang Hoon Lee, Ka San Ha
  • Patent number: 11874020
    Abstract: A motor drive apparatus includes a reactor, a converter connected to an alternating current power supply via the reactor, a smoothing capacitor connected between output terminals of the converter, and an inverter that converts a direct current voltage output from the smoothing capacitor into an alternating current voltage to be applied to a motor and outputs the alternating current voltage. The motor drive apparatus includes a plurality of operation modes for controlling conduction of switching elements of the converter and causing the converter to operate in different modes of operation, and changes operation of at least one of the switching elements of the converter and the inverter according to the operation mode when a bus voltage indicates an excessive value.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: January 16, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Hatakeyama, Keisuke Uemura
  • Patent number: 11870354
    Abstract: An asymmetric half-bridge flyback circuit-based converter is provided. The converter is configured to convert an alternating current (AC) input at an AC input end into a direct current (DC) within a preset voltage value range. The converter includes a full-bridge rectifier circuit, a half-bridge circuit, a resonant circuit, a transformer, a load output circuit, and a control circuit.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: January 9, 2024
    Assignee: Meraki Integrated Circuit (Shenzhen) Technology, Ltd.
    Inventors: Shuai Yang, Wei Dong, Boyue Luan, Lin Sheng
  • Patent number: 11863083
    Abstract: A rectifier assembly includes: a mounting base; and one or more rectification modules configured to be received in the mounting base, each rectification module including: an electronic network including one or more electronic elements configured to convert alternating current (AC) electrical power at an input of the rectification module to direct current (DC) electrical power at an output of the rectification module. Each of the one or more rectification modules is configured to be electrically connected to a DC bus of a driving apparatus that is separate from and independent of the rectifier assembly.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: January 2, 2024
    Assignee: Eaton Intelligent Power Limited
    Inventors: Peter J. Fanduzzi, Paul J. Siebenlist, Mayur Kothari, Michael K. Balck, Sudershan Gawali, Derek Baxter, Craig H. DePas
  • Patent number: 11855550
    Abstract: The disclosure provides a power supply module, including a transformer including magnetic core and winding, and a rectifier circuit electrically connected to the winding, wherein the magnetic core further comprises: a first and a second cover plate opposite to each other; a first magnetic column; and a second magnetic column having a magnetic flux in opposite direction to that of the first magnetic column, the first and second magnetic column connected between the first and the second cover plate; the winding further includes: a first winding wound onto the first magnetic column; and a second winding wound onto the second magnetic column, wherein the first and second winding have a shared winding portion at least partially located between the first and second magnetic column; the rectifier circuit includes a plurality of rectifier components including first to fourth rectifier component electrically connected to form a full bridge rectifier circuit.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: December 26, 2023
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Pengkai Ji, Yibing Cheng
  • Patent number: 11811302
    Abstract: An input line connected current controlled bridge is dynamically coupled to an output line connected voltage controlled bridge of a single stage bidirectional isolated resonant power supply using a synchronous average harmonic current controller. A bridge current sensor measures low frequency and switching current across nodes of the current controlled bridge. Synchronous average harmonic bridge current is controlled using superimposed non-modulated and modulated feedback respectively to track a line current command and linearize coupling to the voltage controlled bridge. A power factor correction signal drives the line current command to regulate DC voltage busses. A feedforward and feedback trim circuit generates a command to the voltage controlled bridge to track input line voltage with attenuated harmonics. The single stage power supply has a defined interface to synchronize and regulate power sharing for one or more modules.
    Type: Grant
    Filed: June 17, 2023
    Date of Patent: November 7, 2023
    Inventor: Lee Fredrik Mazurek
  • Patent number: 11811332
    Abstract: A direct-current power supply apparatus includes: a reactor having one end connected to an alternating-current power supply; a bridge circuit, connected to an opposite end of the reactor, converting an alternating-current first voltage output from the alternating-current power supply into a direct-current voltage; and a current detector detecting an alternating current flowing between the alternating-current power supply and the bridge circuit. The reactor reduces an inductance in accordance with an increase of the alternating current and, when the alternating current exceeds a first current, has an inductance lower than one third of an inductance at which a current does not flow in the reactor. The bridge circuit performs an active operation when the detection value of the alternating current is larger than or equal to the first current and performs a passive operation when the detection value of the alternating current is lower than the first current.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: November 7, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Satoru Ichiki, Takuya Shimomugi, Koichi Arisawa, Keisuke Uemura, Kenji Iwazaki
  • Patent number: 11783787
    Abstract: The present disclosure relates to a driving device. The device includes a first voltage generation module, a voltage regulation module, a first switch module, a first capacitor module, a first transistor module, and a first light-emitting module. The first voltage generation module may be configured to generate a first voltage; the first switch module may be configured to output the first voltage to a first end of the first capacitor module over a first period; the voltage regulation module may be configured to determine a second voltage based on an amount of change in a voltage at the first end of the first capacitor module and to output the second voltage to the second end of the first capacitor module over a second period; and the first transistor module may be configured to drive the first light-emitting module to emit a light using voltage at the first end of the first capacitor.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: October 10, 2023
    Assignee: Chipone Technology (Beijing) Co., LTD.
    Inventor: Zongzhe Xie
  • Patent number: 11777420
    Abstract: A submodule for a modular multilevel converter has nine semiconductor switches that can be switched off, four capacitors, six network nodes, and two terminals. The components are mounted such that different voltages are generated between the terminals of the submodule by controlling the semiconductor switches. This arrangement of components substantially improves the behavior of the converter and of the submodule in the event of a fault.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: October 3, 2023
    Assignee: Siemens Aktiengesellschaft
    Inventors: Viktor Hofmann, Mark-Matthias Bakran, Sebastian Semmler
  • Patent number: 11770026
    Abstract: An apparatus includes a controller configured to control switches of a receiver, the receiver comprising a first receiver coil configured to be magnetically coupled to a transmitter coil of a wireless power transfer system, a rectifier circuit coupled to two terminals of the first receiver coil, a second receiver coil and a first auxiliary switch, wherein the second receiver coil is connected in series with the first auxiliary switch, and the second receiver coil is configured to be magnetically coupled to the transmitter coil, and wherein in response to a low power mode of the apparatus, the controller is configured to turn on the first auxiliary switch such that the first receiver coil and the second receiver coil are connected in series to boost a gain of the wireless power transfer system.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: September 26, 2023
    Assignee: NuVolta Technologies (Hefei) Co., Ltd.
    Inventors: Zhengyu Li, Kaiyong Cui, Zeng Li, Zhijun Luo, Min Yang
  • Patent number: 11764611
    Abstract: An apparatus includes a first receiver coil configured to be magnetically coupled to a transmitter coil, a rectifier circuit coupled to two terminals of the first receiver coil, a second receiver coil and a first auxiliary switch connected in series, wherein the second receiver coil is configured to be magnetically coupled to the transmitter coil, and in response to a low power mode of the apparatus, the first auxiliary switch is configured to be turned on such that the first receiver coil and the second receiver coil are connected in series to boost a gain of the apparatus.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: September 19, 2023
    Assignee: NuVolta Technologies (Hefei) Co., Ltd.
    Inventors: Zhengyu Li, Kaiyong Cui, Zeng Li, Zhijun Luo, Min Yang
  • Patent number: 11742700
    Abstract: A system for wireless power reception, preferably including one or more: antennas, dynamic impedance matches, RF-DC converters, DC impedance converters, and/or DC power outputs. A method for wireless power reception, preferably including: receiving power wirelessly at an antenna, dynamically adjusting an input impedance of a dynamic impedance match coupled to the antenna, and/or delivering the power to a load.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: August 29, 2023
    Assignee: Reach Power, Inc.
    Inventor: Christopher Joseph Davlantes
  • Patent number: 11728684
    Abstract: Wireless power transfer systems, disclosed, include a wireless power transmission system and a wireless power receiver system. The wireless power transmission system includes a transmitter antenna configured to couple with a receiver antenna to transmit alternating current (AC) wireless signals to the receiver antenna. Antenna coupling may be inductive and may operate in conformance to a wireless power and data transfer protocol. A transmission controller drives the transmitter antenna at an operating frequency, and either the wireless power transmission system or the wireless power receiver system may damp the wireless power transmission to create a data signal containing a serial asynchronous data signal.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: August 15, 2023
    Assignee: NUCURRENT, INC.
    Inventors: Mark Melone, Michael Katz
  • Patent number: 11722011
    Abstract: A wireless power transmission system includes a transmitter antenna, an amplifier, and a transmitter controller. The transmitter antenna is configured to transmit wireless power signals and wireless data signals. The amplifier is configured to receive a driving signal at a gate of the at least one transistor and invert a direct power (DC) input power signal to generate the AC wireless signal at the operating frequency. The transmitter controller is configured to configure the driving signal based, at least, on an operating frequency and an initial beaconing process, the initial beaconing process for determining presence of a wireless receiver system at a coupling between the transmitter antenna and a receiver antenna of the wireless receiver system, determine amplifier voltage instructions for the amplifier based on the initial beaconing process, and drive the amplifier by providing the driving signal and the amplifier voltage instructions to the amplifier.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: August 8, 2023
    Assignee: NUCURRENT, INC.
    Inventors: Alberto Peralta, Michael Katz
  • Patent number: 11716016
    Abstract: A switched mode power supply (SMPS) includes a filter (202), a power factor correction (PFC) circuit (204), and a control circuit (206, 406) configured to determine various electrical parameters of the SMPS. In some embodiments, the control circuit (206, 406) is configured to determine a power line frequency and an AC input voltage based on an AC line voltage and an AC neural voltage. In other embodiments, the control circuit (206, 406) is configured to determine an AC input current based on a reactive current flowing through the filter (202) and a PFC AC current. In further embodiments, the control circuit (206, 406) is configured to report a value of an electrical parameter if value is determined to be accurate. Other example switch mode power supplies, control circuits and methods are also disclosed.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: August 1, 2023
    Assignee: Astec International Limited
    Inventors: PengFei Li, XiaoLin He, HaiJun Zhang, XunJiang Dai, Liang Meng
  • Patent number: 11705827
    Abstract: A circuit includes two input nodes and two output nodes. A rectifier bridge is coupled to the input and output nodes. The rectifier bridge includes a first and second thyristors and a third thyristor coupled in series with a resistor in series. The series coupled third thyristor and resistor are coupled in parallel with one of the first and second thyristors. The first and second thyristors are controlled off, with the third thyristor controlled on, during start up with resistor functioning as an in in-rush current limiter circuit. In normal rectifying operation mode, the first and second thyristors are controlled on, with the third thyristor controlled off.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: July 18, 2023
    Assignee: STMicroelectronics (Tours) SAS
    Inventors: Yannick Hague, Romain Launois
  • Patent number: 11689062
    Abstract: Wireless power transfer systems, disclosed, include a wireless power transmission system and a wireless power receiver system. The wireless power transmission system includes a transmitter antenna configured to couple with a receiver antenna to transmit alternating current (AC) wireless signals to the receiver antenna. Antenna coupling may be inductive and may operate in conformance to a wireless power and data transfer protocol. A transmission controller drives the transmitter antenna at an operating frequency, and either the wireless power transmission system or the wireless power receiver system may damp the wireless power transmission to create a data signal containing a serial asynchronous data signal.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: June 27, 2023
    Assignee: NUCURRENT, INC.
    Inventors: Mark Melone, Michael Katz
  • Patent number: 11682981
    Abstract: A rectifying element includes a MOS transistor series-connected with a Schottky diode. A bias voltage is applied between the control terminal of the MOS transistor and the terminal of the Schottky diode opposite to the transistor. A pair of the rectifying elements are substituted for diodes of a rectifying bridge circuit. Alternatively, the control terminal bias is supplied from a cross-coupling against the Schottky diodes. In another implementation, the Schottky diodes are omitted and the bias voltage applied to control terminals of the MOS transistors is switched in response to cross-coupled divided source-drain voltages of the MOS transistors. The circuits form components of a power converter.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: June 20, 2023
    Assignee: STMicroelectronics (Tours) SAS
    Inventor: Frederic Gautier
  • Patent number: 11670447
    Abstract: An auto-transformer rectifier system comprising an 18-pulse (or multiple of 18-pulse) autotransformer rectifier unit ATRU having three, or a multiple of three, diode bridge rectifiers and a balancing resistor to balance the power flow through the diode bridge rectifiers, wherein the balancing resistor has a variable resistance, and further comprising a controller configured to identify imbalances between power flows of the respective diode bridge rectifiers and to adjust the resistance of the balancing resistor in response to the detected imbalance.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: June 6, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Ponggorn Kulsangcharoen, Rodrigo Fernandez-Mattos
  • Patent number: 11658581
    Abstract: A power converter with an adjustable output voltage has an isolation DC/DC transformer, a primary side circuit connected to a primary coil of the isolation DC/DC transformer for transmitting an input AC power to the primary coil, and a secondary side circuit connected to a secondary coil of the isolation DC/DC transformer. The secondary side circuit includes a first output loop, a second output loop and a mode switch connected in the first output loop. When power consumption of a load is low, the mode switch is turned off to interrupt the first output loop so that the secondary side circuit generates a first output voltage with a low voltage level. When power consumption of a load is high, the mode switch is turned on and the secondary side circuit generates a second output voltage with a high voltage level. Without greatly increasing circuits, the power converter achieves wide-range voltage regulation.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: May 23, 2023
    Assignee: Acbel Polytech Inc.
    Inventor: Chia-An Yeh
  • Patent number: 11626756
    Abstract: A method of operating a power and data transfer system includes determining, by a wireless transmission system, presence of a wireless receiver system. The method further includes starting wireless power and data transfer via the wireless transmission system, if presence of the wireless receiver system is detected. The method further includes determining if power at a load associated with the wireless receiver system exceeds a threshold for out of band communications. The method further includes, if the power at the load exceeds the threshold for out of band communications, handing over wireless data transfer to an out of band communications system that is in operative communication with the wireless transmission system.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: April 11, 2023
    Assignee: NuCurrent, Inc.
    Inventors: Jason Luzinski, Michael Katz, Mark Melone
  • Patent number: 11621641
    Abstract: The anti-windup circuit generally has a voltage clamping device in series with a current limiting device operatively connectable to the output current path of a feedback compensator; the feedback compensator being part of a switch-mode power supply (SMPS) having an input voltage source and a load and generating constrained control values required to generate control on-off actions for tight power regulation. The inclusion of the disclosed anti-windup circuit in an SMPS may lead to hardware based overvoltage protection, reduced overall size and faster response to load changes.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: April 4, 2023
    Assignee: Appulse Power Inc.
    Inventor: Aleksandar Radic
  • Patent number: 11621651
    Abstract: The present disclosure provides a high-power density, single-phase cascaded H-bridge rectifier, a control method, and a control system. The high-power density, single-phase cascaded H-bridge rectifier includes: an alternating current (AC) grid-side filter inductor and at least two cascaded power conversion units, where each power conversion unit includes an H-bridge power unit, a decoupling unit, and a direct current (DC)-side equivalent load that are connected in parallel; and each decoupling unit is an independent buck-type active power decoupling circuit, and the decoupling unit is configured to buffer secondary ripple power, to reduce a capacity of a DC bus capacitor.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: April 4, 2023
    Assignee: SHANDONG UNIVERSITY
    Inventor: Chunshui Du
  • Patent number: 11594915
    Abstract: A method of operating a power and data transfer system includes determining, by a wireless transmission system, presence of a wireless receiver system. The method further includes starting wireless power and data transfer via the wireless transmission system, if presence of the wireless receiver system is detected. The method further includes determining if power at a load associated with the wireless receiver system exceeds a threshold for out of band communications. The method further includes, if the power at the load exceeds the threshold for out of band communications, handing over wireless data transfer to an out of band communications system that is in operative communication with the wireless transmission system.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: February 28, 2023
    Assignee: NuCurrent, Inc.
    Inventors: Jason Luzinski, Michael Katz, Mark Melone
  • Patent number: 11588510
    Abstract: A network communication power supply with digital signal isolation includes a transformer, a transformer drive circuit, a rectifier, and a modulation signal duty cycle detection circuit. The transformer has a primary side and a secondary side. The transformer drive circuit is coupled to the primary side, and receives a digital signal input. The transformer drive circuit converts the digital signal input into a drive signal with a duty cycle corresponding to a logic level of the digital signal input according to the logic level. The digital signal input includes a power content. The rectifier is coupled to the secondary side and converts the power content to provide a power source. The modulation signal duty cycle detection circuit is coupled to the rectifier and supplied power by the power source, and provides a digital signal output with a high or low level according to the duty cycle.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: February 21, 2023
    Assignee: ASIAN POWER DEVICES INC.
    Inventors: Yeu-Torng Yau, Tsung-Liang Hung
  • Patent number: 11575315
    Abstract: A totem-pole PFC circuit is provided. The totem-pole PFC circuit includes an inductor, a first bridge arm and a second bridge arm. The first bridge arm includes a first switch and a second switch connected in series. A first middle node connected between the first and second switches is coupled to a first terminal of an AC power source through the inductor. The second bridge arm connected to the first bridge arm in parallel includes a third switch and a fourth switch connected in series. A second middle node connected between the third and fourth switches is coupled to a second terminal of the AC power source. When a polarity of the AC power source is changed, a change time of a voltage on the second middle node is longer than a preset time not less than 20 ?s.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: February 7, 2023
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Qi Fu, Haibin Song, Daofei Xu, Jinfa Zhang
  • Patent number: 11565104
    Abstract: A mechanical circulatory assist device is provided including a stent, a coiled wire wound around the stent, and a reciprocating valve including a housing, one or more leaflets coupled to the housing, and one or more permanent magnets coupled to the housing. The magnets are arranged to interact with a magnetic field generated by the coiled wire when current flows therethrough, so as to axially move the reciprocating valve with respect to the stent when the reciprocating valve is disposed within the stent. Upstream axial motion of the reciprocating valve causes the leaflets to be in an open state in which they allow blood flow through the reciprocating valve. Downstream axial motion of the reciprocating valve causes the leaflets to be in a closed state in which they inhibit blood flow through the reciprocating valve. Other embodiments are also described.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: January 31, 2023
    Assignee: YOSSI GROSS
    Inventor: Yossi Gross
  • Patent number: 11569653
    Abstract: An electronic fuse for a power supply includes at least two switching elements and a regulation unit, wherein a first switching element is arranged in a main branch, where the regulation unit is switches off the first switching element when a predetermined threshold value is exceeded by a prevailing current value, and a second switching element that is also actuated by the regulation unit, which is arranged in an auxiliary branch parallel to the first switching element and assumes a substantial proportion of a resulting power loss when an overload occurs, and the second switching element, which is arranged in at least one auxiliary branch, is configured or optimized for linear operation, and where the at least two switching elements are configured such that the line resistance of the second switching element is at least twice the line resistance of the first switching element.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: January 31, 2023
    Assignee: Siemens Aktiengesellschaft
    Inventor: Markus Troyer
  • Patent number: 11563324
    Abstract: Provided herein is a power distribution system comprising a feedback circuit including a transistor in series with a relay, the feedback circuit regulating regulate a main power path including a main power supply connected in series with an electric power converter. The power distribution system further comprises OR-ing controllers that regulate the main power path and a backup power path including a low-voltage battery. The power distribution system further comprises terminals through which power from the main power path or the backup power path is transmitted to respective components corresponding to channels. The power distribution system further includes a microcontroller that acquires data in each of the channels and control operations associated with each of the channels based on the acquired data.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: January 24, 2023
    Assignee: Pony AI Inc.
    Inventors: Kai Tan, Ran Chen, Bo Pan
  • Patent number: 11557919
    Abstract: A method of operating a power and data transfer system includes determining, by a wireless transmission system, presence of a wireless receiver system. The method further includes starting wireless power and data transfer via the wireless transmission system, if presence of the wireless receiver system is detected. The method further includes determining if power at a load associated with the wireless receiver system exceeds a threshold for out of band communications. The method further includes, if the power at the load exceeds the threshold for out of band communications, handing over wireless data transfer to an out of band communications system that is in operative communication with the wireless transmission system.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: January 17, 2023
    Assignee: NuCurrent, Inc.
    Inventors: Jason Luzinski, Michael Katz, Mark Melone
  • Patent number: 11557960
    Abstract: Adaptive enabling and disabling is described for valley switching in a power factor correction boost converter. In one example, a boost converter control system includes an amplitude detector to receive an amplitude signal from a boost converter that is related to ringing of the boost converter output. The amplitude detector determines the ringing amplitude. A valley switching controller compares the ringing amplitude to a first high amplitude threshold when valley switching is enabled and generates a valley switching disable signal if the ringing amplitude is below the first high amplitude threshold. A cycle controller coupled to the boost converter generates a drive signal to control switching of the boost converter and coupled to the valley switching controller receives the valley switching disable signal to generate the drive signal without valley switching in response to the valley switching disable signal.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: January 17, 2023
    Assignee: NXP USA, Inc.
    Inventors: Remco Twelkemeijer, Wilhelmus Hinderikus Maria Langeslag, Peter Theodorus Johannes Degen
  • Patent number: 11515807
    Abstract: Aspects are described for line frequency commutated voltage source converters for multiphase modular multilevel converters. A voltage source converter (VSC) capacitor voltage of a multiphase VSC of a multiphase power converter can be identified. The multiphase VSC can include a half-bridge circuit for each phase of the multiphase power converter. A circuit parameter can be identified and utilized to determine an arm voltage of an arm of a branch of the multiphase converter. Switch control signals can be generated to insert or bypass the VSC capacitor for the arm of the branch of the multiphase converter device, based at least in part on a comparison between the arm voltage and the VSC capacitor voltage.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: November 29, 2022
    Assignee: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
    Inventors: Jian Liu, Dong Dong
  • Patent number: 11502538
    Abstract: A discharge circuit for an X capacitor has a first voltage detection circuit providing a first indicating signal based on a voltage across two input terminals of a switching converter to indicate whether the two input terminals are connected to an AC power source, and a discharge module starting a discharge operation on the X capacitor based on first indicating signal, and the discharge operation discharges the X capacitor during a first time period, and stops discharging the X capacitor and compares a sampled signal with the voltage across the two input terminals during a following second time period.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: November 15, 2022
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventor: Yuedong Chen
  • Patent number: 11496054
    Abstract: The present invention relates to the technical field of high-gain DC-DC converters, and disclosed is a high-gain quasi-resonant DC-DC converter based on a voltage doubling rectifier circuit. On the basis of a half-bridge quasi-resonant high-gain circuit topology and by combining a bidirectional positive and negative voltage doubling rectifier circuit, the present invention provides a high-gain DC-DC converter. The converter can further improve output voltage gain and reduce output voltage ripples, and can improve the system efficiency while reducing the number of turns of a high-frequency transformer; moreover, the converter can achieve soft-switching control, thereby having the advantages of low voltage and current stress, high efficiency, and the like.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: November 8, 2022
    Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Ningfan Zhong, Zhenhai Zhang, Jianbo Wei
  • Patent number: 11483907
    Abstract: System and method for regulating one or more currents. The system includes a system controller, an inductor, a first resistor, a switch and a first diode. The system controller includes a first controller terminal and a ground terminal, the system controller being configured to output a drive signal at the first controller terminal. The inductor includes a first inductor terminal and a second inductor terminal, the first inductor terminal being coupled to the ground terminal, the second inductor terminal being coupled to one or more light emitting diodes. The first resistor includes a first resistor terminal and a second resistor terminal, the first resistor terminal being coupled to the ground terminal. The switch is configured to receive the drive signal and coupled to the second resistor terminal. The first diode includes a first diode terminal and a second diode terminal and coupled to the first resistor.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: October 25, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Jun Zhou, Yunchao Zhang, Lieyi Fang
  • Patent number: 11469682
    Abstract: This semiconductor device is provided with: a substrate which has, on a principal surface thereof, an input unit for inputting an alternating current power from the exterior, a ground connection unit for connecting to ground formed on the exterior, an output unit for outputting a post-adjustment direct current power to the exterior, and a semiconductor layer; a first Schottky barrier diode formed in a first region of the semiconductor layer so that a cathode electrode is connected to the input unit and so that an anode electrode is connected to the ground connection unit; a second Schottky barrier diode formed in a second region of the semiconductor layer so that a cathode electrode is connected to the output unit and so that an anode electrode is connected to the input unit; and a third Schottky barrier diode formed in a third region of the semiconductor layer so that a cathode electrode is connected to the output unit and so that an anode electrode is connected to the ground connection unit.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: October 11, 2022
    Assignee: LASER SYSTEMS INC.
    Inventors: Yasuo Ohno, Hiroko Itoh
  • Patent number: 11444547
    Abstract: A power conversion apparatus includes: a converter that includes input terminals and switching elements corresponding to respective phases of a three-phase AC power supply and converts an AC voltage of the three-phase AC power supply into a DC voltage, and a capacitor that smooths the DC voltage converted by the converter. A single-phase AC power supply or a DC power supply is connected to two of the input terminals corresponding to any two of the three phases of the converter while a passive element is provided to connect the remaining one of the input terminals corresponding to the phase to which the single-phase AC power supply or the DC power supply is not connected, with one terminal of the capacitor.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: September 13, 2022
    Assignee: FANUC CORPORATION
    Inventor: Wataru Kuroki
  • Patent number: 11444548
    Abstract: A single-phase device-multiplexing active power decoupling cascaded rectifier and control method thereof. The rectifier includes: n device-multiplexing active power decoupling H-bridge units that are cascaded, n?2; each unit including: a bridge arm H1 and a bridge arm H2 connected in parallel, a decoupling capacitor branch formed by two capacitors connected in series, and a resistive load; a decoupling inductor being connected in series between a midpoint of the decoupling capacitor branch and a midpoint of bridge arm H2; and a bridge arm H1 of a first unit being sequentially connected in series to an inductor, resistor, and power supply, and then connected to a bridge arm H2 of a last unit. A power switch module of an H-bridge rectification unit is multiplexed, which not only realizes unit power factor rectification of the unit, but also provides a loop for secondary ripple power to achieve secondary ripple power decoupling control.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: September 13, 2022
    Assignee: SHANDONG UNIVERSITY
    Inventor: Chunshui Du
  • Patent number: 11418061
    Abstract: Techniques for wireless power transfer are disclosed. An example of an apparatus for receiving power in a wireless power transfer system includes a power receiving element, a tuning and current doubler circuit operably coupled to the power receiving element, a power flow controller circuit operably coupled to the tuning and current doubler circuit, and a controller operable coupled to the power receiving element and the power flow controller circuit and configured to detect a signal in the power receiving element and to synchronize the power flow controller circuit based on the signal.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: August 16, 2022
    Assignee: WiTricity Corporation
    Inventors: Martin Pavlovsky, Felix Weidner, Nicholas Athol Keeling
  • Patent number: 11411427
    Abstract: In an uninterruptible power supply apparatus, in a power failure of a commercial AC power supply, a switch is turned off to electrically cut off the commercial AC power supply from an AC input filter, and a DC voltage converter is controlled such that a DC voltage that is the difference between terminal-to-terminal voltages of first and second capacitors is eliminated, and when the DC voltage exceeds a threshold voltage, a converter is controlled to reduce the DC voltage.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: August 9, 2022
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Yousuke Hayashi, Toshihide Nakano
  • Patent number: 11394290
    Abstract: A methods and systems for generating rectified signals are disclosed. For example, a system performing the methods includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: July 19, 2022
    Assignee: DRS Naval Power Systems, Inc.
    Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
  • Patent number: 11380230
    Abstract: Devices, systems and methods are provided for playing back video or other dynamic content at a point of interaction with one or more users via a device that is configured on a sticker, label, card or other substrate. The device is self-powered and employs ambient radio frequency energy harvesting to charge a renewable, rechargeable energy storage element. The device has a display for displaying static content until dynamic content such as the video content is output in response to a user input. The display on the device can be used for outputting the video content, or the device can transmit the video content to an NFC-enabled smart phone for display without the smart phone having to download the video content from the internet.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: July 5, 2022
    Assignee: Becton, Dickinson and Company
    Inventors: Claire Letito Levine, Mojtaba Kashef
  • Patent number: 11368018
    Abstract: A hybrid cascaded APF topology and control method therefor for improving the ability of a system to compensate for higher harmonics, raise the quality of electric energy of output currents, and reduce costs. The topology includes: a three-phase cascaded H-bridge including bridge arms of three phases, each bridge arm including a plurality of H-bridge cells connected in series, and the bridge arms of the three phases connected to a power system needing active filtering via inductors; and a three-phase H-bridge circuit connected at star connection points of the three-phase cascaded H-bridge, the three-phase H-bridge circuit including branches of the three phases and two capacitors connected in parallel across the branches of the three phases, and the branch of each phase including two switching transistors connected in series, where switching transistors of the H-bridge cells use Si devices, and the switching transistors of the three-phase H-bridge circuit use SiC devices.
    Type: Grant
    Filed: December 28, 2019
    Date of Patent: June 21, 2022
    Assignee: SHANDONG UNIVERSITY
    Inventors: Chenghui Zhang, Xi Liu, Hua Geng, Xiangyang Xing
  • Patent number: 11368022
    Abstract: A device for controlling a load flow in an alternating-voltage network includes first and second modular series connections of double-pole switching modules interconnected in a parallel circuit to be inserted in series into a phase line of the alternating-voltage network. At least one switching module of each connection has an energy store and semiconductor switches to be switched on and off. The semiconductor switches can be controlled in such a way that a switching module voltage can be generated at terminals of the switching module. The switching module voltage corresponds to a positive or negative storage voltage or a zero voltage. A control apparatus for controlling the switching modules is configured to generate an equalizing current between the modular series connections. A method for controlling a load flow by using the device is also provided.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 21, 2022
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: Burkard Endres, Martin Pieschel
  • Patent number: 11322985
    Abstract: A wireless power transfer system can be achieved at a low cost, can be used as both a power transmission apparatus and a power reception apparatus, and can cope with a change in coupling coefficient of a resonant coil of the power transmission apparatus and a resonant coil of the power reception apparatus. The wireless power transfer system is a power transmission apparatus that is able to perform bidirectional wireless power transmission, and includes the following: a power supply; a switching circuit that includes a plurality of switching devices; a resonator that includes a coil and a capacitor; a drive control circuit that controls an ON/OFF operation of each switching device of the switching circuit; and a detector that detects a resonance current flowing through the switching circuit.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: May 3, 2022
    Assignee: Maxell, Ltd.
    Inventors: Yoshihiro Todaka, Atsushi Tanaka, Hiroshi Ido
  • Patent number: 11316421
    Abstract: An apparatus can include: a linear drive circuit configured to control a drive current flowing through an LED load; a control circuit configured to acquire a conduction angle signal of a silicon-controlled rectifier dimmer and control the linear drive circuit; and the control circuit being configured to control the drive current to be decreased to reduce a current ripple and to maintain the silicon-controlled rectifier dimmer in a turn-on state when the conduction angle signal is less than a predetermined value.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: April 26, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Huiqiang Chen, Jianxin Wang
  • Patent number: 11283273
    Abstract: An all-electric, battery powered industrial or commercial mobile power unit is provided that can include a number of features. The mobile power unit can include a DC electrical energy source configured to produce a voltage of approximately 300-450 VDC. The mobile power unit can be configured so as to produce a user programmable voltage output and/or a user selected voltage output of either 480 VAC 3-phase, 208 VAC 3-phase, or 240 VAC single-phase. The various output configurations are controlled by software with a system controller of the mobile power unit. Methods of use are also provided.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: March 22, 2022
    Assignee: MOXION POWER CO.
    Inventors: Alexander J. Smith, Paul M. Huelskamp, Alexander M. Meek, Jared T. Mickle
  • Patent number: 11271485
    Abstract: The anti-windup circuit generally has a voltage clamping device in series with a current limiting device operatively connectable to the output current path of a feedback compensator; the feedback compensator being part of a switch-mode power supply (SMPS) having an input voltage source and a load and generating constrained control values required to generate control on-off actions for tight power regulation. The inclusion of the disclosed anti-windup circuit in an SMPS may lead to hardware based overvoltage protection, reduced overall size and faster response to load changes.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: March 8, 2022
    Assignee: Appulse Power Inc.
    Inventor: Aleksandar Radic
  • Patent number: 11261393
    Abstract: A method and system for cost-effectively converting a feedstock using thermal plasma, or other styles of gassifiers, into an energy transfer system using a blended syngas. The feedstock is any organic material or fossil fuel to generate a syngas. The syngas is blended with any fuel of a higher thermal content (BTU) level, such as natural gas. The blended syngas high thermal content fuel can be used in any energy transfer device such as a boiler for simple cycle Rankine systems, an internal combustion engine generator, or a combined cycle turbine generator system. The quality of the high thermal content fuel is monitored using a thermal content monitoring feedback system and a quenching arrangement.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: March 1, 2022
    Assignee: Plasma Tech Holdings, LLC
    Inventor: James C. Juranitch