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公开(公告)号：US12119771B2
公开(公告)日：2024-10-15
申请号：US18000476
申请日：2020-06-12
Applicant: SOCOVAR, SOCIÉTÉ EN COMMANDITE
Inventor： Mostafa Abarzadeh , Kamal Al-Haddad
IPC: H02P1/00 , H02M1/00 , H02M1/12 , H02M7/04 , H02M7/217 , H02M7/483 , H02M7/487 , H02M7/5395 , H02P1/28 , H02P3/00 , H02P27/14
CPC classification number: H02P27/14 , H02M1/0095 , H02M1/12 , H02M7/05 , H02M7/217 , H02M7/4837 , H02M7/487 , H02M7/5395
Abstract: The present disclosure provides a method and apparatus using a novel PWM switching technique that requires only one PWM carrier signal and benefits from two logic functions to provide switching signals and provides the flying capacitor (FC) voltage as well as dc-link capacitors voltages regulated to their desired values without external control. It may also, eliminate the odd multiples of the switching harmonic clusters from the output voltage is possible; double the frequency of first switching harmonic; reduce filtering efforts may be required since the values of the output LC filter inductor and capacitor can be very much reduced. Furthermore, notable reduction in control complexity is possible using the novel PWM method.
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公开(公告)号：US20240154516A1
公开(公告)日：2024-05-09
申请号：US18053564
申请日：2022-11-08
Applicant: Analog Devices, Inc.
Inventor： Siyuan Chen , Michael George Negrete
CPC classification number: H02M1/0058 , H02M1/0043 , H02M7/05 , H02M7/219
Abstract: A soft-switching Phase-Shift Full-Bridge (PSFB) converter system may include a transformer comprising a primary side and a secondary side. Phase-leading circuitry and phase-lagging circuitry may be located on the primary side of the transformer. The phase leading a phase lagging circuitry may include one or more bridge switches. The system may further include clamping circuitry coupled to the secondary side of the transformer. The clamping circuitry configurable to, when in an active clamping mode, short the secondary side of the transformer. An inductance may be included on the primary side of the transformer to collect and store energy from an input source when the secondary side of the transformer is shorted. The energy stored in the inductance may be used to enable soft-switching of the bridge switches in the phase-lagging circuitry during a dead time or a circulating time of the bridge switches in the phase-leading circuitry.
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公开(公告)号：US11979097B2
公开(公告)日：2024-05-07
申请号：US17378979
申请日：2021-07-19
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Ryou Matsuyama , Masaki Kono , Tomoisa Taniguchi
IPC: H02M1/32 , G05F1/571 , H02M1/00 , H02M5/453 , H02M5/458 , H02M7/04 , H02M7/217 , H02M7/5387 , H03K17/081
CPC classification number: H02M7/53871 , H02M1/0006 , H02M1/32 , H02M7/05 , H02M7/2173 , H03K17/08104 , G05F1/571 , H02M5/453 , H02M5/458
Abstract: A converter circuit converts AC electric power into DC power. An inverter circuit converts the DC power into AC power. A capacitor is connected in parallel to each of the converter circuit and the inverter circuit between these circuits. The capacitor allows variation of an output voltage from the converter circuit, and absorbs variation of an output voltage from the inverter circuit due to a switching operation. An overvoltage protection circuit includes a resistor and a semiconductor element connected in series to each other. The overvoltage protection circuit is connected in parallel to the capacitor to protect the inverter circuit from an overvoltage. First and second control units respectively control the inverter circuit and the overvoltage protection circuit.
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公开(公告)号：US20240333170A1
公开(公告)日：2024-10-03
申请号：US18611722
申请日：2024-03-21
Applicant: Delta Electronics (Shanghai) Co.,Ltd.
Inventor： Qi FU , Daofei XU , Shengnan XIE , Jinfa ZHANG
CPC classification number: H02M7/05 , H02M1/0006 , H02M1/4208 , H02M1/44 , H02M3/33571 , H02M3/33576
Abstract: The invention discloses a power conversion circuit and a power supply device. The power conversion circuit is applied to a power supply device, comprising: an AC/DC conversion circuit, wherein a DC side of the AC/DC conversion circuit has a first reference potential point; a first common-mode inductor; a DC/DC conversion circuit including a primary circuit having a second reference potential point, a secondary circuit and a transformer; wherein a first terminal of the first common-mode inductor is connected to the DC side of the AC/DC conversion circuit, and a second terminal of the first common-mode inductor is connected to the primary circuit of the DC/DC conversion circuit; the first reference potential point or the second reference potential point is connected to an electric field shield.
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公开(公告)号：US20240106320A1
公开(公告)日：2024-03-28
申请号：US18349326
申请日：2023-07-10
Applicant: Mitsubishi Electric Corporation
Inventor： Ryoma HAYASHI
CPC classification number: H02M1/14 , H02M7/003 , H02M7/05 , H02M7/217 , H05K1/0204
Abstract: A power conversion device includes a first solid pattern provided on a multi-layer wiring substrate and connected to a positive side of a first power supply, a second solid pattern provided on the multi-layer wiring substrate and connected to a negative side of the first power supply, and a third solid pattern provided on the multi-layer wiring substrate and connected to a negative side of a second power supply that is insulated from the first power supply. The first solid pattern and the third solid pattern are arranged so as to at least partially overlap in a first direction of the multi-layer wiring substrate, and the second solid pattern and the third solid pattern are arranged so as to at least partially overlap in the first direction of the multi-layer wiring substrate.
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Patent Agency Ranking
公开(公告)号：US20230275533A1
公开(公告)日：2023-08-31
申请号：US18143890
申请日：2023-05-05
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Masahiro YAMAMOTO , Masaki NAKAISHI
CPC classification number: H02P27/06 , H02M7/06 , H02M7/537 , H02K7/09 , H02P6/182 , H02K11/33 , H02M7/05
Abstract: A power conversion device includes a converter circuit, an inverter circuit including a switching element, a first capacitor, a buffer circuit, and a current supply circuit. The converter circuit converts a first alternating current into a direct current, and outputs the direct current to a pair of wires. The inverter circuit converts the direct current into a second alternating current by a switching operation of the switching element, and supplies the second alternating current to drive coils of a motor so that a drive shaft is rotationally driven. The first capacitor and the buffer circuit are connected between the pair of wires. The buffer circuit includes a second capacitor and a regulator connected in series. The current supply circuit supplies a current to support coils using energy stored in the second capacitor so that a load of the drive shaft is supported in a non contact manner.
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公开(公告)号：US20230223886A1
公开(公告)日：2023-07-13
申请号：US18000476
申请日：2020-06-12
Applicant: SOCOVAR, SOCIÉTÉ EN COMMANDITE
Inventor： Mostafa ABARZADEH , Kamal AL-HADDAD
CPC classification number: H02P27/14 , H02M1/12 , H02M7/4837 , H02M7/5395 , H02M7/487 , H02M1/0095 , H02M7/05 , H02M7/217
Abstract: The present disclosure provides a method and apparatus using a novel PWM switching technique that requires only one PWM carrier signal and benefits from two logic functions to provide switching signals and provides the flying capacitor (FC) voltage as well as dc-link capacitors voltages regulated to their desired values without external control. It may also, eliminate the odd multiples of the switching harmonic clusters from the output voltage is possible; double the frequency of first switching harmonic; reduce filtering efforts may be required since the values of the output LC filter inductor and capacitor can be very much reduced. Furthermore, notable reduction in control complexity is possible using the novel PWM method.
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公开(公告)号：US20240275307A1
公开(公告)日：2024-08-15
申请号：US18626146
申请日：2024-04-03
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Ryou MATSUYAMA , Masaki KONO , Tomoisa TANIGUCHI
IPC: H02M7/5387 , G05F1/571 , H02M1/00 , H02M1/32 , H02M5/453 , H02M5/458 , H02M7/04 , H02M7/217 , H03K17/081
CPC classification number: H02M7/53871 , H02M1/0006 , H02M1/32 , H02M7/05 , H02M7/2173 , H03K17/08104 , G05F1/571 , H02M5/453 , H02M5/458
Abstract: A converter circuit converts AC electric power into DC power. An inverter circuit converts the DC power into AC power. A capacitor is connected in parallel to each of the converter circuit and the inverter circuit between these circuits. The capacitor allows variation of an output voltage from the converter circuit, and absorbs variation of an output voltage from the inverter circuit due to a switching operation. An overvoltage protection circuit includes a resistor and a semiconductor element connected in series to each other. The overvoltage protection circuit is connected in parallel to the capacitor to protect the inverter circuit from an overvoltage. First and second control units respectively control the inverter circuit and the overvoltage protection circuit.
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公开(公告)号：US20240235416A9
公开(公告)日：2024-07-11
申请号：US18489268
申请日：2023-10-18
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yuchen ZHOU
CPC classification number: H02M7/2173 , H02M1/4233 , H02M1/4266 , H02M7/05 , H02M7/219 , B60L53/53
Abstract: A charging module and a charging device. The charging module includes a three-phase rectifier module, a bus capacitor module, an inductor, and a controller. An input end of the three-phase rectifier module is electrically connected to an input power supply, and an output end of the three-phase rectifier module is electrically connected to an input end of the bus capacitor module. The bus capacitor module includes a first bus capacitor and a second bus capacitor. The first bus capacitor is connected between a first output end of a three-phase bridge arm and a midpoint of the three-phase bridge arm, and the second bus capacitor is electrically connected between a second output end of the three-phase bridge arm and the midpoint. The inductor is electrically connected to the midpoint of the three-phase bridge arm and a midpoint between the first bus capacitor and the second bus capacitor.
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公开(公告)号：US20240048065A1
公开(公告)日：2024-02-08
申请号：US17963172
申请日：2022-10-10
Applicant: Power Forest Technology Corporation
Inventor： Chia-Hsien Liu
Abstract: A power conversion device and a control circuit are provided. The power conversion device includes a power conversion circuit and a control circuit. The control circuit includes a first controller and a second controller. The power conversion circuit includes an input capacitor, a rectifier circuit, and a power switch. The input capacitor is coupled to an input terminal of the power conversion device. The rectifier circuit converts an input AC power into a rectified power. The first controller operates the power switch to cause the power conversion circuit to convert the rectified power into an output power. The second controller detects a signal waveform at the input terminal, and controls the first controller in response to the signal waveform at the input terminal, so as to utilize the power switch to discharge the charge stored in the input capacitor.
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