By Semiconductor Rectifier And Inverter Patents (Class 363/37)
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Patent number: 12224677Abstract: A power source device includes a capacitive load; and an AC power source, as a voltage source, which applies AC voltage to the capacitive load. A series circuit composed of an inductor and a capacitor is connected to the AC power source. A series circuit composed of a load inductor and the capacitive load is connected in parallel to one of the inductor or the capacitor. If an inductance of the inductor is defined as Lp, a capacitance of the capacitor is defined as Cp, an inductance of the load inductor is defined as Ls, an equivalent capacitance of the capacitive load is defined as Cs, and a frequency of the AC power source is defined as fv, the following expressions are satisfied, 0.8/((2?·fv){circumflex over (?)}2)<Lp·Cp<1.2/((2?·fv){circumflex over (?)}2) 0.8/((2?·fv){circumflex over (?)}2)<Ls·Cs<1.2/((2?·fv){circumflex over (?)}2).Type: GrantFiled: January 27, 2021Date of Patent: February 11, 2025Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Taichiro Tamida, Shingo Tsuda, Daisuke Takauchi, Takashi Kumagai
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Patent number: 12224672Abstract: An asymmetric power converter includes a primary-side rectifying/filtering circuit, a power factor correction circuit, an asymmetric conversion circuit, and a feedback control circuit. The primary-side rectifying/filtering circuit rectifies and filters an input voltage to output a first voltage. The power factor correction circuit converts the first voltage into a power voltage. The asymmetric conversion circuit converts the power voltage into an output voltage to supply power to a load, and an output current is drawn by the load. The feedback control circuit generates a feedback control signal according to a load power demand provided by the load. The feedback control circuit controls the asymmetric conversion circuit to operate in a full-bridge resonant mode, a half-bridge resonant mode, or a hybrid half-bridge resonant mode according to the feedback control signal.Type: GrantFiled: February 24, 2023Date of Patent: February 11, 2025Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventor: Min-Han Lee
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Patent number: 12212247Abstract: Three-phase interleaved resonant converters with integrated magnetics are described. In various examples, transformers are integrated into a transformer core of a converter. A primary side circuit includes a set of circuit segments corresponding to phases of the three-phase interleaved converter. Each of the circuit segments include an integrated winding component that provides a transformer primary winding and a resonant inductor connected in series.Type: GrantFiled: June 16, 2022Date of Patent: January 28, 2025Assignee: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.Inventors: Rimon Gadelrab, Fred C. Lee
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Patent number: 12176813Abstract: An apparatus such as a power supply includes management hardware. The management hardware monitors operation of multiple power converter phases coupled in parallel to produce an output voltage. Based on the monitored operation, the management hardware determines a status of a series circuit path connecting windings of the multiple power converter phases. The management hardware produces status information indicating the status of the series circuit path.Type: GrantFiled: August 23, 2021Date of Patent: December 24, 2024Assignee: Infineon Technologies Austria AGInventors: Zhiqing You, Tim Ng
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Patent number: 12176826Abstract: An inverter driving apparatus includes an inverter having a plurality of legs respectively corresponding to each of a plurality of phases and the control unit generating space vector modulation signals based on a phase voltage command, each of the space vector modulation signals corresponding to each of the plurality of phases, respectively, determining whether an output voltage of the inverter corresponding to at least one space vector modulation signal of the space vector modulation is in a non-linear region by determining whether each voltage of the space vector modulation signals is included in a predetermined range, generating a terminal voltage command by determining whether or not to apply an offset voltage to each of the space vector modulation signals based on the determination of the non-linear region, and controlling a turn-on state of at least one switch included in each of the plurality of legs by modulating the terminal voltage command based on pulse width modulation.Type: GrantFiled: November 11, 2022Date of Patent: December 24, 2024Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Hyun Jae Lim, Yong Jae Lee, Young Ho Chae, Young Kwan Ko, Young Gi Lee
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Patent number: 12160107Abstract: An inverter system includes an inverter bridge, an inductor and a controller. The inverter bridge includes first, second, third and fourth power switches. The inductor is connected between the inverter bridge and a power grid. The controller is configured to control both the second power switch and the third power switch to be turned on or both the first power switch and the fourth power switch to be turned on within a first time period of each power frequency cycle. The first time period is from a moment when a current of the power grid becomes zero to a moment when a voltage of the power grid becomes zero. The current of the power grid is in inverse phase with the voltage of the power grid in the first time period, so that reactive power is stored in the inductor.Type: GrantFiled: May 16, 2024Date of Patent: December 3, 2024Assignee: Foxess Co., LtdInventors: Chongfeng Zheng, Zhijiang Deng, Chuntao Li, Jian Peng
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Patent number: 12132341Abstract: The embodiment of the invention discloses a battery charging and discharging circuit, comprising: a battery module (1), configured to receive charging voltage or release discharging voltage; a transformer circuit (2), connected with the battery module (1), the transformer circuit (2) is configured to convert a first charging voltage into a charging voltage or convert a discharging voltage into a first discharging voltage; a buck-boost circuit (3), connected with the transformer circuit (2), the buck-boost circuit (3) is configured to convert a second charging voltage into the first charging voltage or convert the first discharging voltage into a second discharging voltage; a power grid end or user end (4), connected with the buck-boost circuit (3), the power grid end or user end (4) is configured to generate the second charging voltage or receive the second discharging voltage.Type: GrantFiled: December 22, 2021Date of Patent: October 29, 2024Assignee: FranklinWH Technologies Co., Ltd.Inventors: Daqing Wang, Yuezhen Hu, Haisheng Song
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Patent number: 12131677Abstract: A driving circuit and a display device are disclosed by the present application. The driving circuit includes a switch control module, a timer, a frequency divider, and a first flip-flop. The driving circuit and the display device provided in the present application may automatically stop the timer and the frequency divider after a blank screen time of the startup ends by adding a switch control module, thereby being capable of saving the power consumption of the driving circuit and improving service life of the display device.Type: GrantFiled: September 29, 2021Date of Patent: October 29, 2024Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Fangyun Liu
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Patent number: 12126178Abstract: Operating a renewable energy generator forming part of a renewable energy power plant. During a fault experienced by a power network: determining an active current set point to enable a reactive current supply boost at the point of connection between the plant and the network, the active current set point being based on a voltage level associated with the generator and on operational characteristics of the generator, plant, power network and/or connecting network; calculating a time period for the reactive current boost, the time period being the maximum time that the active current set point can be maintained for; and controlling the generator during the calculated time period to alter active current output to the determined active current set point, thereby providing the reactive current supply boost at the point of connection.Type: GrantFiled: November 28, 2019Date of Patent: October 22, 2024Assignee: VESTAS WIND SYSTEMS A/SInventors: Manoj Gupta, Janakiraman Sivasankaran
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Patent number: 12095381Abstract: A bidirectional AC power converter, having a front-end comprising parallel sets of three switches in series, which connects multi-phase AC to coupling transformer through a first set of tank circuits, for synchronously bidirectionally converting electrical power between the multi-phase AC and a DC potential, and for converting electrical power between the DC potential to a bipolar electrical signal at a switching frequency, controlled such that two of each parallel set of three switches in series are soft-switched and the other switch is semi-soft switched; the coupling transformer being configured to pass the bipolar electrical power at the switching frequency through a second set of the tank circuits to a synchronous converter, which in turn transfers the electrical power to a secondary system at a frequency different from the switching frequency.Type: GrantFiled: August 15, 2022Date of Patent: September 17, 2024Assignee: The Research Foundation for The State University of New YorkInventors: Kalyan Yenduri, Sunil Dube, Pritam Das
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Patent number: 12081112Abstract: A power converter includes at least one arm having a plurality of converter cells cascaded to each other. Each of the converter cells includes a pair of input/output terminals, a plurality of switching elements, and a power storage element. The power storage element is electrically connected to the input/output terminals through the switching elements. A control device generates a control signal for controlling on and off of the switching elements of each converter cell. The control device generates the control signal by pulse width modulation control based on a modulation command signal including an AC component having a fundamental frequency and corresponding to a command value of an output voltage between the input/output terminals, in each converter cell, such that a harmonic component included in the output voltage and having a predetermined frequency that is an integer multiple of the fundamental frequency is suppressed.Type: GrantFiled: December 25, 2019Date of Patent: September 3, 2024Assignee: Mitsubishi Electric CorporationInventors: Takuya Kajiyama, Toshiyuki Fujii, Shuhei Fujiwara, Ryosuke Uda, Shigeo Hayashi
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Patent number: 12074547Abstract: The present disclosure relates to a driving circuit and method, a frequency converter, a device and a computer readable storage medium. The circuit includes: a rectifier unit including a first input terminal, a second input terminal and an output terminal, wherein the output terminal of the rectifier unit is connected to an input terminal of the inverter unit, and the second input terminal of the rectifier unit is connected to the input terminal of the inverter unit a first switch arranged between the first input terminal of the rectifier unit and an output terminal of the inverter unit, and configured to control the driving circuit to switch between a series mode and a parallel mode by being switched on or off; the inverter unit with the output terminal connected to a load; and a capacitor connected in parallel between the rectifier unit and the inverter unit.Type: GrantFiled: August 24, 2020Date of Patent: August 27, 2024Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAIInventors: Yingyi Jiang, Peiyu Dang, Yongying Guo, Yu Liu, Songru Huang
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Patent number: 12068711Abstract: Methods, apparatuses and systems provide technology for a high frequency alternating-current (HFAC) distribution network for a vehicle that includes a plurality of HFAC zones coupled to a direct-current (DC) power source, the plurality of HFAC zones disbursed within the vehicle, where each HFAC zone includes a HFAC resonant inverter to convert DC power to HFAC power and a HFAC bus coupled to the HFAC resonant inverter, the HFAC bus to distribute the HFAC power to one or more loads. The technology includes a CLCL resonant tank circuit having two capacitors and two inductors, a push-pull circuit coupled to the CLCL resonant tank circuit, the push-pull circuit including a pair of switches, and a transformer to couple the inverter to the HFAC bus.Type: GrantFiled: February 3, 2021Date of Patent: August 20, 2024Assignees: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., THE REGENTS OF THE UNIVERSITY OF MICHIGANInventors: Yanghe Liu, Qunfang Wu, Mengqi Wang, Weiyang Zhou, Chungchih Chou, Hiroshi Ukegawa
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Patent number: 12059972Abstract: A power stage circuit for AC to DC and DC to AC applications includes an AC to DC circuit having multiple totem pole circuits. Two totem pole circuits are designed for 120 VAC and may include inductors with the same inductance values. An additional totem pole circuit is a neutral line and includes an inductor with a different (e.g., lower) inductance value. By choosing inductors with the same inductance values, the 120-VAC sources can be decoupled and separately controlled (e.g., subtracted from each other on one circuit and added together on another circuit) to provide split phase AC power for a power outlet in DC to AC applications.Type: GrantFiled: March 16, 2023Date of Patent: August 13, 2024Assignee: RIVIAN IP HOLDINGS, LLCInventors: Mohammad Nanda Rahmana Marwali, Yuxiang Shi, Muhammad Mobeen Mahmood
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Patent number: 12057700Abstract: Systems and methods for controlling and methods for controlling the power factor in a generator system are provided. In some embodiments, the generator system includes one or more generators configured to supply power to a power grid, an automatic voltage regulator configured to regulate a voltage of an output of the generator to a set voltage and regulate a power factor of the output to a set power factor, and a controller. The controller is configured to detect a fault on the output and to adjust the set power factor of the automatic voltage regulator based on the fault. The controller is further configured to ramp the set power factor from the adjusted value to an initial value over a set period of time.Type: GrantFiled: October 1, 2020Date of Patent: August 6, 2024Assignee: Cummins Power Generation LimitedInventors: Apoorv P. Hiremath, Ankit Vinodchandra Patel, Philippe Goesel, Sudharsana Govindaswami
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Patent number: 12040700Abstract: A power supply apparatus, comprising at least one circuit board having thereon at least a first single phase power factor controlled (PFC) circuit, and a second PFC corrected circuit, the first single phase PFC circuit and the second PFC corrected circuit each having at least one PFC device in communication with at least one inverter, at least one resonant (LC) circuit positioned on the at least one circuit board and in electrical communication with at least one of the first single phase PFC circuit and the second PFC corrected circuit, at least one transformer in communication with at least one of the first single phase PFC circuit and the second PFC corrected circuit via the at least one LC resonant circuit, the at least one transformer configured to generate at least one transformer output signal, and at least one capacitor in communication with the at least one transformer and configured to output at least one magnetron input signal in response to the at least one transformer output signal, and at least oType: GrantFiled: October 25, 2022Date of Patent: July 16, 2024Assignee: MKS INSTRUMENTS, INC.Inventors: Marco Garuti, Francesco Braghiroli, Paolo Balocchi, Mario Massa
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Patent number: 12004316Abstract: A converter unit has a main printed circuit board (MPCB) on which at least one functional module is arranged. By the functional module, at least one AC voltage supplied to the functional module via first power connections of the functional module can be converted into at least two DC voltage potentials output via second power connections. The MPCB has conductor paths via which control signals can be supplied to control connections, and the MPCB has conductor paths which extend from a control unit to first and second control connections of the MPCB and via which the first and second control signals can be supplied to the first and second control connections. The functional module is at least mechanically connected to the MPCB at least in the region of the first and second control connections such that the functional module does not use the first and/or the second control signals.Type: GrantFiled: August 6, 2020Date of Patent: June 4, 2024Assignee: Siemens AktiengesellschaftInventors: Klaus Nieberlein, Falko Baumann, René Junghänel, Matthias Nährig, Jens Schmenger, Jennifer Lautner
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Patent number: 11996787Abstract: A new class of DC-AC inverter comprises a buck or two buck converters and two or four low frequency switches, and it achieves ultra-high efficiency, reactive power flow capability, small size and low cost in grid-connected applications.Type: GrantFiled: October 22, 2021Date of Patent: May 28, 2024Assignee: Redx Technology Australia Pty LtdInventor: Xue Jian Chen
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Patent number: 11984884Abstract: A power supply device is provided. The power supply device includes a first switch element for selectively providing an alternating current (AC) power source to an actuation device, a second switch element for selectively providing the AC power source to the first switch element, a detection circuit for confirming whether or not the first switch element is in a full turn-on state, by comparing an input power source and an output power source of the first switch element, a sensor for sensing the size of the AC power source, and a controller for selectively controlling the operation of the second switch element on the basis of the sensed size of the AC power source and the confirmed full turn-on state.Type: GrantFiled: January 17, 2023Date of Patent: May 14, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Jehyung Cho, Teaho Lee, Daesung Kang, Dongjo Shin, Cheolhun Cho
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Patent number: 11973339Abstract: A T-breaker is an all-in-one solution for dc microgrid fault protection, power flow control, and power quality improvement. A T-breaker features a modular multilevel “T” structure with integrated energy storage devices. The two horizontal arms of the T-breaker realize fault current breaking, load voltage compensation, and power flow control; and the vertical arm of the T-breaker realizes shunt compensation. The configuration provides excellent voltage scalability and relaxes the requirements on the switching signal synchronization during fault transients. The local energy storage in sub-modules eases the fault energy dissipation requirement placed on the traditionally-adopted surge arrestors. The modular multilevel structure also offers immense control flexibility for all types of targeted functions of the provided T-breaker.Type: GrantFiled: June 9, 2021Date of Patent: April 30, 2024Assignee: Ohio State Innovation FoundationInventors: Jin Wang, Risha Na, Yue Zhang
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Patent number: 11967891Abstract: A bi-directional power converter includes: a plurality of input nodes, each input node configured to electrically connect to one phase of a multi-phase AC electrical power distribution network; and an electrical network configured to convert alternating current (AC) to direct current (DC) and to convert DC current to AC current, the electrical network including a plurality of electronic switches. The bi-directional power converter also includes a control system configured to: estimate harmonic voltage content at three intermediate nodes in the bi-directional power converter based on a measured electrical quantity; and control the electronic switches to compensate for the estimated harmonic voltage content.Type: GrantFiled: February 15, 2022Date of Patent: April 23, 2024Assignee: Eaton Intelligent Power LimitedInventor: Huaqiang Li
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Patent number: 11955903Abstract: A rectification and boost-buck control system for alternating current, includes a processor, a commutation detection circuit, a chopper circuit and a switch circuit. The chopper circuit includes upper bridge elements connected to corresponding phases of the alternating current. The switch circuit includes lower bridge elements connected to the upper bridge elements. The commutation detection circuit is configured to detect commutation signals. Based on the communication signals and current output current and/or current rectified voltage, the processor is capable of outputting a conduction angle control signal to the chopper circuit and output a switch control signal to the switch circuit to adjust on-off time of the chopper circuit and the switch circuit to thereby adjust the current output current and/or the current rectified voltage.Type: GrantFiled: September 16, 2021Date of Patent: April 9, 2024Assignee: SHENZHEN DOSO TECHNOLOGY LTD.Inventor: Jun Wu
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Patent number: 11942785Abstract: The disclosure relates to a power electronics device having at least two inverters and a transformer apparatus having a core arrangement, at least one primary winding and at least one secondary winding that wind around the core arrangement at least in sections.Type: GrantFiled: October 21, 2020Date of Patent: March 26, 2024Assignee: SMA Solar Technology AGInventor: Sebastian Umlauf
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Patent number: 11929607Abstract: A solar power generation system provides safety for personnel working on or around the system. The solar power generation system includes multiple solar panels, multiple cut-off devices separate from the plurality of solar panels and a master control unit. The cut-off devices are coupled in series with corresponding sub-groups of the plurality of solar panels and connect and disconnect outputs of the corresponding sub-groups from a solar power output chain or bus. The master control unit has at least one power supply output coupled to the plurality of cut-off devices, and a power supply input that receives a power source independent of an output of the plurality of solar panels. The cut-off devices are deactivated to open-circuit a connection of the corresponding sub-group when the power source is removed from the power supply input.Type: GrantFiled: January 6, 2022Date of Patent: March 12, 2024Assignee: MONITEK, LLCInventors: Nahit Emanet, Oezguer Aksoy, Mustafa Mihmanli
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Patent number: 11923785Abstract: Method for measuring an operating temperature of a power module (10) that is used for operating an electric vehicle drive, the power module (10) comprising a plurality of semiconductor switching elements (14) and drive electronics (16), wherein the semiconductor switching elements (14) can be switched by the drive electronics (16) in such a way that the semiconductor switching elements (14) allow or interrupt a drain-source current in order to convert the direct current fed into the power module (10) at the input side into an output-side alternating current, wherein the method comprises measurement of a voltage present at a point located on a side of a diode (22) that is connected in series with the semiconductor switching element (14) and that faces away from the semiconductor switching element (14), wherein the method comprises measurement of a drain-source current of the semiconductor switching element (14) that is generated by a current source (18), wherein the method comprises determination of a mathematType: GrantFiled: February 11, 2022Date of Patent: March 5, 2024Assignee: ZF Friedrichshafen AGInventors: Michael Meiler, Johannes Hager, Stefan Hain
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Patent number: 11901737Abstract: A distributed-power-supply power conversion system includes a plurality of power inverters configured to invert DC power to AC power; and a control device configured to select at least one power inverter from the plurality of power inverters as a power inverter used for testing, and configured to perform an energization test of the power inverter used for testing in a state where an AC side of the power inverter used for testing is disconnected from a system, and is connected to an AC power supply device and to a load bank, and a voltage on the AC side of the power inverter used for testing is established. The distributed-power-supply power conversion system can perform an energization test of a power inverter before a system receives power.Type: GrantFiled: February 7, 2020Date of Patent: February 13, 2024Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATIONInventors: Issei Fukasawa, Tatsuaki Ambo, Ruben Alexis Inzunza Figueroa
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Patent number: 11870382Abstract: A matrix power conversion device including a plurality of three-phase switching modules and a controller is provided. Each three-phase switching module includes a plurality of bidirectional switches connected to the input phase voltages of the three-phase input power respectively and outputs a corresponding output phase voltage of the three-phase output power. The controller determines a maximum voltage, an intermediate voltage and a minimum voltage among all the input phase voltages to acquire a waveform of a control carrier wave in a switching cycle. The controller acquires output expected values corresponding to all output phase voltages and compares them with the waveform of the control carrier wave for acquiring a turning-on time of each of the plurality of bidirectional switches. Accordingly, the controller controls the matrix power conversion device to switch the three-phase input power so as to change the three-phase output power for driving the motor.Type: GrantFiled: January 18, 2022Date of Patent: January 9, 2024Assignee: DELTA ELECTRONICS, INC.Inventors: Ping-Heng Wu, Kai-Wei Hu, Lei-Chung Hsing
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Patent number: 11863106Abstract: A power supply control circuit of a three-phase brushless DC (BLDC) motor is provided. The control circuit includes means for calculating the DC current consumption IS based on a phase current signal Ishunt of the BLDC motor, the means including a shunt resistor Rshunt, an amplifier and a low pass filter. The amplifier is configured to amplify a measured voltage Vshunt that corresponds to the current Ishunt across the resistor Rshunt and perform an offset correction. The low pass filter is configured to provide a filtered voltage VO of the voltage Vshunt. The DC current IS is calculated based on the voltage VO.Type: GrantFiled: July 15, 2021Date of Patent: January 2, 2024Assignee: Mahle International GmbHInventors: Juan Carrión González, Carlos Domingo Màs, Juan Francisco Pardo Peris, Carlos Sevilla Pavon, Carlos Vernich Gimeno
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Patent number: 11863065Abstract: A method for controlling a power module includes: configuring N cells in cascade connection, where N is a positive integer equal to or greater than 2, each cell comprising a bidirectional switching unit and a non-controlled rectifier bridge, the bidirectional switching unit being connected to central points of two bridge arms of the non-controlled rectifier bridge; controlling each cell to operate in one of three operating modes of a modulation mode, a bypass mode and a non-controlled rectifying mode, wherein in the N cells, m1 cells operate in the bypass mode, where 0?m1?M1, m2 cells operate in the non-controlled rectifying mode, where 0?m2?M2, m3 cells operate in the modulation mode and can realize power factor correction, where 0<m3; wherein m1+m2+m3=N, M1 is the allowable number of cells for bypass in the system, and M2 is the allowable number of cells for non-controlled rectification in the system.Type: GrantFiled: April 11, 2022Date of Patent: January 2, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Hong Liu, Wen Zhang, Dan Wang, Cheng Lu, Hongyang Wu
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Patent number: 11855478Abstract: A secondary power system is configured to connect to a motor vehicle having a powertrain comprising an engine and a first alternator. The secondary power system includes a second alternator connected to the engine, one or more electro-chemical storage devices coupled to the second alternator and configured to be charged by the alternator, and one or more inverter chargers. The inverter chargers may operate in a first mode to provide AC power to loads on the vehicle or in a second mode to receive alternative power and charge the storage devices. In an embodiment, the secondary power system includes multiple storage devices each comprising at least one electro-chemical storage pack and a logic. The storage devices are interconnected by a junction box. The logics within each storage device may selectively disrupt power flow from the junction box upon detection of an error condition.Type: GrantFiled: May 24, 2021Date of Patent: December 26, 2023Assignee: VOLTA POWER SYSTEMS, L.L.C.Inventors: Bill Cavanaugh, Jack Johnson
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Patent number: 11843316Abstract: According to one aspect, an apparatus comprising a two stage DC-DC converter is provided. The converter consists of a multilevel DC-DC converter stage cascaded with a fixed voltage ratio DC-DC converter stage. The converter is controlled so that a first stage of the converter provides an optimized output (a regulated bus voltage) which serves as the input to the second stage. The multilevel DC-DC converter may be the first stage and the fixed voltage ratio, unregulated DC-DC converter may be the second stage converter. Alternatively, the fixed voltage ratio, unregulated DC-DC converter may be the first stage and the multilevel DC-DC converter may be the second stage.Type: GrantFiled: July 17, 2020Date of Patent: December 12, 2023Assignee: Huawei Digital Power Technologies Co., Ltd.Inventors: Liming Ye, Heping Dai
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Patent number: 11804786Abstract: A power converting apparatus includes: a bridge circuit that includes at least two legs each including switching elements connected in series, and converts an alternating-current voltage output from an alternating-current power supply into a direct-current voltage; a power-supply current detecting unit that detects a current from the alternating-current power supply; a zero crossing detecting unit that detects a voltage polarity of the alternating-current power supply; and a control unit that controls ON and OFF of the switching elements depending on outputs of the power-supply current detecting unit and the zero crossing detecting unit, in which a dead time that is set for switching and includes a change in the voltage polarity of the alternating-current power supply is longer than a dead time that is set for switching and does not include a change in the polarity.Type: GrantFiled: September 28, 2018Date of Patent: October 31, 2023Assignee: Mitsubishi Electric CorporationInventors: Keisuke Uemura, Satoru Ichiki, Takuya Shimomugi, Koichi Arisawa, Kenji Iwazaki
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Patent number: 11784583Abstract: An electrical converter includes a main converter for generating a first output voltage and a converter cell for converting the first output voltage into a second output voltage. A method for operating an electrical converter includes: receiving a reference voltage for the electrical converter; pulse width modulating the reference voltage with a first modulation frequency for generating a first switching signal for the main converter; switching the main converter with the first switching signal to generate the first output voltage; estimating the first output voltage from the first switching signal; determining a voltage error by subtracting the estimated first output voltage from the reference voltage; pulse width modulating the voltage error with a second modulation frequency, which is higher than the first modulation frequency, for generating a further switching signal for the converter cell; and switching the converter cell with the further switching signal to generate the second output voltage.Type: GrantFiled: March 3, 2020Date of Patent: October 10, 2023Assignee: ABB Schweiz AGInventors: Mario Schweizer, Tobias Geyer, Ioannis Tsoumas
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Patent number: 11777414Abstract: A bi-directional AC/DC converter is provided including a DC-power connection configured to be coupled to a DC-power source, an AC-power connection configured to be coupled to at least one of an AC-power source or a load, a multiplexer having a plurality of multiplexer switches, at least one interleaved bridge circuit having a plurality of bridge switches coupled to the multiplexer, and a positive DC node and a negative DC node coupled to the plurality of multiplexer switches, wherein the plurality of bridge switches includes at least two bridge switches coupled between the AC-power connection and at least one of the positive DC node or the negative DC node.Type: GrantFiled: July 2, 2021Date of Patent: October 3, 2023Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventor: Noureldeen Mohamed Elsayad
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Patent number: 11768276Abstract: The present application discloses a laser emitting circuit and a LiDAR. In a one-driving-multiple emitting circuit, in an energy storage stage, a power supply stores energy for an energy storage element of the energy storage circuit, and a laser diode does not emit light. In an energy transfer stage, by setting a floating-ground diode D0, an energy charging current passes through an energy storage capacitor C2, the floating-ground diode D0 and the ground to form a loop. In an energy release stage, when the energy release switch element is in an off state, the energy release circuit where the energy release switch element is located is not the lowest impedance loop. A laser diode in the energy release circuit where the energy release switch element is located does not emit light.Type: GrantFiled: June 18, 2022Date of Patent: September 26, 2023Assignee: SUTENG INNOVATION TECHNOLOGY CO., LTD.Inventors: Junlin Chen, Wenbin Rui
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Patent number: 11755049Abstract: A method, apparatus, system and computer program is provided for controlling an electric power system, including implementation of a voltage control and conservation (VCC) system used to optimally control the independent voltage and capacitor banks using a linear optimization methodology to minimize the losses in the EEDCS and the EUS. An energy validation process system (EVP) is provided which is used to document the savings of the VCC and an EPP is used to optimize improvements to the EEDCS for continuously improving the energy losses in the EEDS. The EVP system measures the improvement in the EEDS a result of operating the VCC system in the “ON” state determining the level of energy conservation achieved by the VCC system. In addition the VCC system monitors pattern recognition events and compares them to the report-by-exception data to detect HVL events.Type: GrantFiled: May 13, 2022Date of Patent: September 12, 2023Assignee: Dominion Energy, Inc.Inventors: Stephen J. Tyler, Phillip W. Powell
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Patent number: 11728746Abstract: Disclosed is a current source inverter that includes a combination of normally-on and normally-off switches configured to provide free-wheeling paths for current in case of loss of control signals or gate drive power.Type: GrantFiled: April 14, 2020Date of Patent: August 15, 2023Assignee: Infineon Technologies Austria AGInventors: Gerald Deboy, Johann Kolar, Matthias Joachim Kasper, Dominik Bortis, Mattia Guacci
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Patent number: 11726130Abstract: An apparatus includes a mechanical switch and a solid-state switch, such as a diamond switch or antiparallel-connected thyristor pair, coupled in series between an AC source and the load, such as a substation input transformer. The control circuit may be configured to connect the AC power source to the load by closing the mechanical switch and turning on the solid-state switch thereafter. The control circuit may be configured to interrupt a connection of the AC source to the load by turning off the solid-state switch and closing the mechanical switch thereafter. Operations of the switches may be coordinated with a fuse coupled in series with the solid-state switch to address different types of fault conditions.Type: GrantFiled: August 26, 2020Date of Patent: August 15, 2023Assignee: Eaton Intelligent Power LimitedInventors: Eddie Wilkie, Geraldo Nojima
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Patent number: 11711003Abstract: An electric power supply is disclosed having high-voltage, direct-current (HVDC) circuitry comprising one or more DC pre-charge capacitors and one or more power transistor switches, the HVDC circuitry configured to receive high-voltage, direct-current (HVDC) input power of about 320 volts and/or greater and convert the HVDC input power to multi-phase, high-voltage, alternating-current (HVAC) output power of about 320 volts and/or greater; and low-voltage, direct current (LVDC) circuitry adapted and configured to operate on low-voltage, direct-current, wherein the LVDC circuitry is configured to control and monitor the multi-phase HVAC output power. The electric power supply is further configured to operate in reverse and convert received multiphase HVAC input power to HVDC output power.Type: GrantFiled: May 31, 2020Date of Patent: July 25, 2023Assignee: MAGNIX USA, INC.Inventors: Youcef Abdelli, Roei Ganzarski
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Patent number: 11680002Abstract: A method for treating wastewater having one or more of suspended solids, dissolved solids, biological oxygen demand includes solids filtration followed by a bi-polar/bi-directional flow through ionic module fitted with anionically/cationically charged plates followed by a sub-sonic resonance module followed by another bi-polar/bi-directional flow through ionic module followed by a ultra-sonic resonance module followed by one or more anion/cation collection membrane modules. Recycle is provided in each step, wherein each step may be repeated, and wherein one or more of the steps can be bypassed.Type: GrantFiled: March 17, 2021Date of Patent: June 20, 2023Assignee: Fluent Technologies, LLCInventor: Philip C. Shehane
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Patent number: 11677310Abstract: A power converting apparatus includes a diode bridge that converts first AC power supplied from a power supply into DC power, a main circuit capacitor that smooths the DC power, one or more capacitors that reduces a noise component included in the first AC power, and a path switch. The path switch switches a charging path for the main circuit capacitor so that current output from the AC power supply flows into the main circuit capacitor via the capacitor(s) from when supply of the first AC power starts until a voltage of the main circuit capacitor reaches a predetermined voltage, and that the current output from the AC power supply flows into the main circuit capacitor without bypassing the capacitor(s) after the voltage of the main circuit capacitor reaches the predetermined voltage.Type: GrantFiled: September 12, 2018Date of Patent: June 13, 2023Assignee: Mitsubishi Electric CorporationInventor: Hidetoshi Yamakawa
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Patent number: 11664739Abstract: In brief, the invention relates in particular to a converter (100) comprising a plurality of rectifier arms (110), making it possible in particular to rectify AC electrical signals available on the electrical phases (U, V, W) of an electrical grid. To balance the electrical signals coming from the electrical phases (U, V, W) of the electrical grid, and to limit a modulation amplitude of the DC signal generated by the converter (100) between its output terminals (S1, S2), the converter (100) also comprises a correction arm (120) that determines an amplitude of electric current flowing in a neutral (N) of the electrical grid and that generates an opposing electric current of equal or if not close amplitude. The invention also relates to a two-way charger (10) comprising such a converter (100) and one or more active double bridges (200), such that an output (S3, S4) of the active double bridges (200) is electrically isolated from the converter (100).Type: GrantFiled: March 28, 2019Date of Patent: May 30, 2023Assignee: INSTITUT VEDECOMInventors: Mustapha Debbou, David Frey, Nisith Bhowmick, François Colet, Seddik Bacha
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Patent number: 11619675Abstract: A method for monitoring DC link capacitor health includes receiving a plurality of DC link capacitor state variables and determining whether each of the DC link capacitor state variables are less than a threshold value. In response to the DC link capacitor state variable being less than the threshold value, a deviation of each of the DC link capacitor state variables from the threshold value is calculated. The method further includes determining whether each of the deviations of the DC link capacitor state variables occurred within a threshold time. The method further includes calculating a probability of failure of a DC link capacitor. The probability of failure is used to estimate a remaining lifespan of the DC link capacitor.Type: GrantFiled: December 31, 2020Date of Patent: April 4, 2023Assignee: Goodrich CorporationInventor: Shoyeb Khan
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Patent number: 11581129Abstract: A reactor includes a plurality of windings, a coupling core, and an inductor core. A coupling core configured to form a coupling closed magnetic circuit that magnetically couples the plurality of windings, the plurality of windings being wound around the coupling core; and. An inductor core, which includes a main part, a first projection part projecting from one end of the main part, and a second projection part projecting from another end of the main part, and each of the first projection part and the second projection part is magnetically connected to the coupling core. The inductor core forms an inductor closed magnetic circuit together with a part of the coupling core around which one winding of the plurality of windings is wound.Type: GrantFiled: March 15, 2018Date of Patent: February 14, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Junichi Kotani, Hisayoshi Kato, Takayuki Hiruma, Osamu Moriya
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Patent number: 11569772Abstract: The present disclosure relates to a motor control device and method. The motor control device includes an inverter for driving a motor, a first shunt resistor connected to a first low-side switching element included in the inverter, a second shunt resistor connected to a second low-side switching element included in the inverter, a DC-link shunt resistor in series with the inverter, and a controller for controlling the inverter based on first current value measured through the first and second shunt resistors and a second current value measured through the DC-link shunt resistor.Type: GrantFiled: November 10, 2021Date of Patent: January 31, 2023Assignee: HL MANDO CORPORATIONInventor: Jae Sang Park
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Patent number: 11557979Abstract: A motor control system includes a VFD unit comprising a rectifier circuit having a plurality of phase legs each including thereon an upper switching unit and a lower switching unit, an inverter connected to the rectifier circuit by way of a DC link and having a plurality of switches therein controllable to provide a three-phase AC output power to a load, and a bypass relay unit comprising a bypass relay coupled to each of the phase legs of the rectifier circuit downstream from the lower switching unit. An isolation contactor unit is positioned between the inverter and the load and operable to selectively connect/disconnect the inverter to/from the load. The bypass relay unit is operable in a first and second positions to couple the rectifier circuit to the inverter and to couple the rectifier circuit to a bypass path that bypasses the inverter.Type: GrantFiled: November 8, 2019Date of Patent: January 17, 2023Assignee: Eaton Intelligent Power LimitedInventor: Kaijam M. Woodley
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Patent number: 11550676Abstract: A method for protecting data in a storage system is disclosed. In one embodiment, such a method includes detecting, by a first hardware management console, first battery-on status associated with a first uninterruptible power supply. The method further detects, by a second hardware management console, second battery-on status associated with a second uninterruptible power supply. The method communicates, from the first hardware management console to the second hardware management console, the first battery-on status. The method then triggers, by the second hardware management console, a dump of modified data from memory to more persistent storage upon detecting both the first battery-on status and the second battery-on status. A corresponding system and computer program product are also disclosed.Type: GrantFiled: September 6, 2018Date of Patent: January 10, 2023Assignee: International Business Machines CorporationInventors: Todd C. Sorenson, Ronald D. Martens, Keith G. Morrison, Brian A. Rinaldi, Jiwu Duan, John C. Elliott, Gary W. Batchelor
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Patent number: 11545834Abstract: A gateway system for a building comprises: a first relay to couple a first line of the gateway system to a first grid line of a power grid; a second relay to couple a second line of the gateway system to a second grid line of the power grid; a neutral line coupled to a neutral grid line of the power grid; a first electric-vehicle (EV) line coupled to the first line of the gateway system, the first EV line configured for being coupled to a first line of an EV charging connector; a second EV line coupled to the second line of the gateway system, the second EV line configured for being coupled to a second line of the EV charging connector, wherein the EV charging connector has no neutral line; and a balancing converter coupled to the first and second lines of the gateway system.Type: GrantFiled: October 28, 2021Date of Patent: January 3, 2023Assignee: Atieva, Inc.Inventor: Mingkai Mu
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Patent number: 11538725Abstract: A semiconductor module arrangement includes a housing and at least one pair of semiconductor substrates arranged inside the housing. Each pair of semiconductor substrates includes first and second semiconductor substrates. The first semiconductor substrate includes a first dielectric insulation layer arranged between a first metallization layer and a third metallization layer, and a second dielectric insulation layer arranged between the third metallization layer and a second metallization layer. The second semiconductor substrate includes a first dielectric insulation layer arranged between a first metallization layer and a third metallization layer, and a second dielectric insulation layer arranged between the third metallization layer and a second metallization layer.Type: GrantFiled: July 24, 2020Date of Patent: December 27, 2022Assignee: Infineon Technologies AGInventor: Daniel Domes
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Patent number: 11515795Abstract: A power apparatus applied in a solid state transformer structure includes an AC-to-DC conversion unit, a first DC bus, and a plurality of bi-directional DC conversion units. First sides of the bi-directional DC conversion units are coupled to the first DC bus. Second sides of the bi-directional DC conversion units are configured to form at least one second DC bus, and the number of the at least one second DC bus is a bus number. The bi-directional DC conversion units receive a bus voltage of the first DC bus and convert the bus voltage into at least one DC voltage, or the bi-directional DC conversion units receive at least one external DC voltage and convert the at least one external DC voltage into the bus voltage.Type: GrantFiled: April 30, 2020Date of Patent: November 29, 2022Assignee: DELTA ELECTRONICS, INC.Inventors: Sheng-Hua Li, Wen-Lung Huang