Patents Examined by LaKaisha Jackson
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Patent number: 10291143Abstract: A long-life intelligent step-down conversion device includes a high-frequency modulation unit including a first switching tube and a second switching tube, an inductance filtering unit including a filtering inductor, and an inverting paraphase unit. The drain of the first switching tube is connected to a DC voltage, its source connects to the drain of the second switching tube, and the source of the second switching tube is carthed. The grids of the first and second switch tubes are respectively connected to two-path anti-phased PWM pulse signals. The front end of the filtering inductor is connected to the source of the first switching tube. The inverting paraphase unit, with its input terminal connected to the back end of the filtering inductor, is configured for invertedly converting a half-wave pulse voltage output from the back end of the filtering inductor to a sine AC voltage. Which of easy to carry, without electrolytic capacitors, improving the service life, avoiding interference to the power grid.Type: GrantFiled: February 28, 2017Date of Patent: May 14, 2019Assignee: GUANGDONG BESTEK E-COMMERCE CO., LTD.Inventors: Zhigang Liao, Tao Hou
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Patent number: 10284103Abstract: A power converter includes first and second DC terminals between which the power converter is operable to generate a voltage difference. The power converter also includes a control unit that is configured to operate in a normal mode during normal operation of the power converter and in a fault mode when a fault occurs in a respective DC power transmission medium that is operatively connected in use to one of the first or second DC terminals. The control unit in the normal mode generates a normal operating voltage difference between the first and second DC terminals. The control unit in the fault mode generates a modified operating voltage difference between the first and second DC terminals while maintaining the respective voltage potential with respect to earth of the other of the first and second DC terminals. The modified operating voltage difference is lower than the normal operating voltage difference.Type: GrantFiled: July 24, 2014Date of Patent: May 7, 2019Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventor: Carl David Barker
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Patent number: 10283965Abstract: A method for incorporating a non-operating station into an operating system in a multi-terminal flexible DC transmission system. The method includes selecting a STATCOM operation mode for the non-operating station; opening a bypass switch at an AC side and connecting a charging resistor to an AC line; closing the AC incoming-line breaker, and pre-charging a converter valve of the non-operating station through the resistor; closing the bypass switch after the pre-charging; selecting a constant-DC voltage control mode for the non-operating station to perform deblocking; controlling the difference between a non-operating station DC voltage value and an operating system direct voltage value to be within an allowable range; closing the pole-connection device at the DC side of a converter of the non-operating station; and switching the non-operating station from the STATCOM operation mode to a DC operation mode, and incorporating the non-operating station into the operating system.Type: GrantFiled: April 18, 2014Date of Patent: May 7, 2019Assignees: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTDInventors: Yunlong Dong, Gang Li, Jie Tian, Nannan Wang, Chao Liu
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Patent number: 10284099Abstract: A hybrid power converter circuit includes a switched-capacitor power converter stage and a pulse-width modulation (PWM) or resonant output circuit coupled to a switching node of the switched-capacitor power converter stage. In particular, the PWM or resonant output circuit can include a transformer having a primary winding and a secondary winding magnetically coupled to each other, and the secondary winding is coupled to the output node of the power converter. The switched-capacitor power converter stage is coupled between the input node of the power converter and the primary winding of the transformer, and includes capacitors and switches configured to connect the capacitors to the input node during a first phase of operation and connect the capacitors to the primary winding of the transformer of the PWM or resonant output circuit during a second phase of operation.Type: GrantFiled: June 1, 2017Date of Patent: May 7, 2019Assignee: Linear Technology CorporationInventors: Jindong Zhang, Jian Li
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Patent number: 10277126Abstract: This converter includes a controllable switch (M) and a control device (311) for generating a signal for controlling the opening and closing instants of the switching switch, the control device being of the control device type in a current mode requiring the application of a current stabilization signal. The control device includes a component (20) delivering a stabilization signal (RC) intermittently, by applying the stabilization signal (RC) at a predetermined instant which precedes a reference instant; and a comparator (28) for generating a control signal (CM) of the controllable switch (M) from the comparison of a set value signal (ÎL) and of a measurement signal corresponding to the current (IL) flowing in an impedance (L) of the converter, the intermittent stabilization signal (RC) being subtracted from the set value signal (ÎL) or added to the measurement signal before applying the comparator.Type: GrantFiled: June 15, 2017Date of Patent: April 30, 2019Assignee: THALESInventors: François Klein, Christophe Taurand
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Patent number: 10277113Abstract: A switching power supply device includes a control unit alternately turning a first switching device and a second switching device ON/OFF so as to drive a primary side of a transformer, wherein the control unit includes: a peak power limiting circuit that monitors input power to the primary side of the transformer and outputs a forced turn OFF signal every time the input power becomes higher than a prescribed value; and a switching cycle counter circuit that estimates an output voltage on a secondary side of the transformer by counting a number of times the forced turn OFF signal is outputted by the peak power limiting circuit, and outputs a switching stop signal that causes the alternating turning ON/OFF of the first and second switching devices to stop when the estimated output voltage reaches an overvoltage protection detection voltage.Type: GrantFiled: December 5, 2017Date of Patent: April 30, 2019Assignee: FUJI ELECTRIC CO., LTD.Inventor: Jian Chen
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Patent number: 10270348Abstract: A synchronous switching regulator circuit for supply regulation of a switching circuit includes a pass transistor to couple the switching circuit to a supply voltage. The synchronous switching regulator circuit further includes a switch that is operable to synchronously turn off a flow of a supply current through the pass transistor. The switching circuit can be controlled by a switching signal, and the switch can operate in synchronization with the switching circuit.Type: GrantFiled: October 12, 2017Date of Patent: April 23, 2019Assignee: Avago Technologies International Sales PTE. LimitedInventors: Choong Yul Cha, Dandan Li, Hung-Ming Chien, Long Bu, Stephen C. Au
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Patent number: 10263512Abstract: An apparatus for converting voltage includes terminals coupled to external circuits at corresponding voltages and a switching network having driving circuits and semiconductor switches that interconnect capacitors in successive states to one another and to the terminals. The switches interconnect some capacitors to one another through a series of switches when an activation pattern causes them to be activated. Each driving circuit has power connections, a control input, and a drive output coupled to and controlling at least one switch. A drive output of one of them couples to and drives each switch. Some of the driving circuits are powered via corresponding power connections from at least one of the capacitors such that a voltage across the corresponding power connections is less than a highest of the corresponding voltages. The terminals and the switching network are constituents of a switched capacitor converter.Type: GrantFiled: November 15, 2017Date of Patent: April 16, 2019Assignee: pSemi CorporationInventors: David Giuliano, Gregory Szczeszynski, Raymond Barrett, Jr.
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Patent number: 10243306Abstract: An output device is disclosed herein. The output device includes a DC transmission cable and a connector. The DC transmission cable is configured to receive and transmit a DC voltage. The connector is connected to an output terminal of the DC transmission cable and configured to receive the DC voltage and output an output voltage. The connector includes a housing, a DC-DC converter and a output terminal. The DC-DC converter is enclosed in the housing and configured to convert the DC voltage to the output voltage. The output terminal includes a first node and a second node, and the first node is connected to the DC-DC converter, enclosed in the housing and configured to receive and transmit the output voltage.Type: GrantFiled: January 26, 2016Date of Patent: March 26, 2019Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Dao-Fei Xu, Jin-Fa Zhang
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Patent number: 10236787Abstract: In a device for operating a rectifier, in particular a semi-controlled rectifier bridge, and a method for operating a rectifier, in particular a power converter, the rectifier is supplied from system phases, in particular from a three-phase AC voltage system, and supplies a unipolar voltage on the output side, the rectifier including controllable switches, in particular semiconductor switches such as thyristors, etc., a respective system phase supplying a respective current source, the current generated in each case being used as trigger signal for the controllable switch allocated to the respective system phase as a function of the state of a controllable switch unit.Type: GrantFiled: April 13, 2015Date of Patent: March 19, 2019Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Norbert Hettel, Hans Jürgen Kollar
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Patent number: 10230311Abstract: A method prevents shoot-through currents and reduces body-diode conduction time in an inverter circuit by changing dead times for transistors in the inverter circuit. A sensing resistor senses temperatures of transistors in the inverter circuit. A delay generator changes delay times in response to receiving the temperatures of the transistors from the sensing resistor. A dead time generation unit changes the dead times for the transistors in response to changes in the delay times.Type: GrantFiled: March 15, 2017Date of Patent: March 12, 2019Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Ziang Chen, Jun Chen, Hang Sang Lee
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Patent number: 10216209Abstract: A digital Low Drop-Out regulator includes: an event-driven circuit for generating a trigger signal by asynchronously detecting whether an output voltage is out of a threshold range to generate a first error information signal and a first control signal; a time-driven circuit for generating a second error information signal by detecting a change in the output voltage synchronized with a clock signal, and generating a second control signal by combining the first and second error information signals; a clock/trigger control circuit for generating the clock signal having a first or second cycle based on the trigger signal and the first and second error information signals; a first array driver for controlling driving force of the output voltage in response to the first control signal; and a second array driver for controlling the driving force of the output voltage in response to the second control signal.Type: GrantFiled: June 11, 2018Date of Patent: February 26, 2019Assignees: SK Hynix Inc., THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Hyun-Ju Ham, Jong-Hwan Kim, Min-Goo Seok, Do-Yun Kim, Sung Justin Kim
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Patent number: 10199938Abstract: A switching power source device for controlling a current flowing through a coil by turning on/off a switching element by a PWM control to obtain a desired DC voltage, includes in a PWM ON period to turn on the switching element by the PWM control, a switching control of the switching element is enabled by a first pulse signal whose cycle is shorter than a PWM cycle based on the PWM control and whose pulse width is gradually increased, in a first period just after the PWM ON period is started, and the switching control of the switching element is enabled by the PWM signal based on the PWM control after the first period has elapsed.Type: GrantFiled: October 31, 2017Date of Patent: February 5, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Norisato Takeya, Masashi Oshiba, Satoshi Kumaki, Yasutaka Horikoshi
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Patent number: 10199929Abstract: Disclosed examples include a transient event detector circuit to detect transient events in a switching converter, including a DLL circuit to detect changes in a duty cycle of a pulse width modulation signal used to operate a switching converter, and an output circuit to provide a status output signal in a first state when no transient event is detected, and to provide the status output signal in a second state indicating a transient event in the switching converter in response to a detected change in the duty cycle of the pulse width modulation signal.Type: GrantFiled: October 3, 2016Date of Patent: February 5, 2019Assignee: Texas Instruments IncorporatedInventors: Michael Couleur, Neil Gibson, Antonio Priego
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Patent number: 10199951Abstract: A flyback converter is provided with a synchronous rectifier (SR) controller including a pulse linear regulator (PLR) charging path and an LDO charging path. The SR controller is configured to monitor the switching period and/or duty cycle of a power switch in the flyback converter to select between the PLR and LDO charging paths.Type: GrantFiled: April 3, 2018Date of Patent: February 5, 2019Assignee: DIALOG SEMICONDUCTOR INC.Inventors: Pengju Kong, Xiaye Wang, Wenbo Liang, Jianming Yao
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Patent number: 10199932Abstract: A reference signal generator includes a voltage reference, an amplifier coupled to the voltage reference, and a precharge circuit coupled to the amplifier. The voltage reference is configured to generate a constant voltage. The amplifier is configured to receive the constant voltage from the voltage reference and generate a regulating primary output signal and a non-regulating secondary output signal. The precharge circuit is configured to charge a noise reduction capacitor with the non-regulating secondary output signal.Type: GrantFiled: October 12, 2017Date of Patent: February 5, 2019Assignee: Texas Instruments IncorporatedInventor: Roy Alan Hastings
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Patent number: 10199956Abstract: A power supply system includes a power supply, a converter, and a processor. The converter converts voltage of the electric power supplied from the power supply. The processor is configured to generate a first control signal to control the converter to output a target voltage or a target current via a feedback control based on the first control signal. The processor is configured to generate a second control signal to detect a state of the power supply. The processor is configured to combine the first control signal and the second control signal to control the converter.Type: GrantFiled: February 23, 2017Date of Patent: February 5, 2019Assignee: HONDA MOTOR CO., LTD.Inventor: Ryota Kitamoto
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Patent number: 10186960Abstract: A power supply includes a voltage converter circuit which converts an input voltage into an output voltage and outputs the output voltage, a voltage controller which controls the voltage converter circuit in response to a first feedback voltage or a second feedback voltage, a feedback terminal which supplies the first feedback voltage, an internal voltage divider circuit which supplies the second feedback voltage, and a switch unit which transfers the first feedback voltage or the second feedback voltage to the voltage controller.Type: GrantFiled: June 16, 2016Date of Patent: January 22, 2019Assignee: SAMSUNG DISPLAY CO. LTD.Inventors: Seok Hwan Lee, Jong Jae Lee, Yang Uk Nam, Se Young Heo, Jun Ki Hong
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Patent number: 10170913Abstract: A static synchronous compensator device connected between a source and a load of a three-phase power system, comprising: a main feedback line configured to provide a main feedback signal from lines between the source and the load; a mixer configured to mix the main feedback signal with a balance function to generate a balanced signal; a signal controller configured to convert the balanced signal to a controlled signal; a gain circuit configured to multiply the controlled signal by ?1 and to perform proportional gain and integral gain (P & I) processing on the controlled signal to generate an intermediate correction signal; and a pulse width modulator configured to apply a pulse width modulation pattern to modulate the voltage source inverter to generate an AC waveform that is applied to the lines between the source and the load.Type: GrantFiled: November 29, 2016Date of Patent: January 1, 2019Assignee: Mitsubishi Electric Power Products, Inc.Inventors: George Steve Shurina, Kevin Justin Goldstein, Christopher Lee, Michael J. Fleming, Michael Albert Fuchs
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Patent number: 10170991Abstract: A switching control circuit for controlling a multi-channel switching circuit can include: a logic control circuit that receives an external operation signal, and generates an enable signal, a trigger signal, and an order signal; a reference voltage regulation circuit that receives the enable signal, the trigger signal, the order signal, and a plurality of input voltage signals, and generates an adjustable reference voltage signal, where the reference voltage regulation circuit is also configured to select one of the plurality of input voltage signals based on the order signal; a feedback control circuit that receives the reference voltage signal, the plurality of input voltage signals, and the output voltage signal, and generates a feedback control signal; and a channel selection circuit that receives the order signal and the feedback control signal, and generates switching control signals to control switching operations of the multi-channel switching circuit.Type: GrantFiled: December 19, 2017Date of Patent: January 1, 2019Assignee: Silergy Semiconductor Technology (Hangzhou) LTDInventor: Junjie Li