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公开(公告)号：US11909234B2
公开(公告)日：2024-02-20
申请号：US16634298
申请日：2018-03-01
Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
Inventor： Stefan Goetz
CPC classification number: H02J7/0024 , H02J7/345 , H03K17/063 , H02M1/08 , H02M7/483 , H03K2217/0081
Abstract: The present invention relates to a method for recharging an energy store (102) used to drive a power semiconductor switch (100), wherein the energy store (102) and the power semiconductor switch (100) are at the same potential, wherein a switching state of the power semiconductor switch (100) is effected by a controller (204, 712), wherein the controller (204) assigns a respective potential value to the energy store (102) at a respective switching state (202) and wherein, by driving at least one charging switch (112, 114, 122, 132, 142, 152), charging of the energy store (102) is activated as soon as the potential value of the energy store (102) corresponds to a ground potential of a supply voltage (106, 216).
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公开(公告)号：US20240055862A1
公开(公告)日：2024-02-15
申请号：US17887904
申请日：2022-08-15
Applicant: SPARQ SYSTEMS INC.
Inventor： Majid Pahlevaninezhad , Praveen Jain
CPC classification number: H02J3/32 , H02M7/4837 , H02M1/0012 , H02J3/381 , H02J2300/26
Abstract: Systems and methods relating to the conversion of DC power to AC power suitable for an AC power grid. DC power is received from one or more PV panels and is converted into DC power useful for charging an energy storage subsystem. The energy storage subsystem feeds into a DC/DC converter that converts the low voltage DC power into high voltage DC power suitable for a DC/AC inverter. The DC/AC inverter then converts the high voltage DC power into AC power suitable for an AC grid. A low voltage DC/DC converter can be used that is based on a differential geometry approach such that adjustable parameter values for components within the converter converge to nominal values as system parameters evolve.
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公开(公告)号：US20240048063A1
公开(公告)日：2024-02-08
申请号：US17641824
申请日：2020-08-27
Applicant: Maschinenfabrik Reinhausen GmbH
Inventor： Angus BRYANT
CPC classification number: H02M7/003 , H02M7/4835 , H01G2/04 , H01G9/26
Abstract: The invention regards a modular switching cell of a high voltage direct current power converter, comprising a base module (18) with a first switching unit (2), a second switching unit (3), a first capacitor (4), and a second capacitor (5), wherein the first switching unit (2), the second switching unit (3), the first capacitor (4), and the second capacitor (5) are mounted on a chassis (15), characterized in that the base module (18) is adapted to receive at least three different busbar sets, each including a plurality of busbars for interconnecting the first switching unit (2), the second switching unit (3), the first capacitor (4), and the second capacitor (5) to form one of two parallel half bridge circuits between a first cell terminal and a second cell terminal, and two serial half bridge circuits between the first cell terminal and the second cell terminal (200), and a full bridge circuit between the first cell terminal and the second cell terminal.
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公开(公告)号：US20230402941A1
公开(公告)日：2023-12-14
申请号：US18454581
申请日：2023-08-23
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Xinyu YU , Kai XIN , Haibin GUO , Fuqiang XU
IPC: H02M7/5388 , H02M1/12 , H02M1/14 , H02M7/483
CPC classification number: H02M7/5388 , H02M1/12 , H02M1/14 , H02M7/483
Abstract: This application discloses a common-mode voltage adjustment method and apparatus, and a control system, and relates to the field of electronic technologies. In an example method, a controller generates an injection instruction of a first common-mode voltage based on a first modulation scheme, generates an injection instruction of a second common-mode voltage based on a second modulation scheme, and generates an injection instruction of a third common-mode voltage based on the injection instruction of the first common-mode voltage and the injection instruction of the second common-mode voltage during a modulation scheme switching period. The injection instruction of the third common-mode voltage may be used to control a inverter circuit to output the third common-mode voltage.
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公开(公告)号：US20230396185A1
公开(公告)日：2023-12-07
申请号：US18250906
申请日：2021-10-28
Applicant: GPOWER SEMICONDUCTOR, INC.
IPC: H02M7/483 , H02M7/5387 , H02M1/44
CPC classification number: H02M7/4833 , H02M1/44 , H02M7/53871
Abstract: The present disclosure discloses a dual output energy conversion device, modulation method, and power supply device which can enhance the bus voltage boosting capability of the conversion device by using a first electric energy storage module, so that it can be used in a wider input voltage range. A first conversion output circuit and a second conversion output circuit are set, and voltage stress of all switching tubes is reduced to half of the direct current bus voltage, which can greatly reduce the system EMI of the conversion device in high-frequency applications, and improve the power conversion efficiency of the device. The dual output energy conversion device only needs to realize the control of one-stage power conversion, and has a simple control structure.
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Patent Agency Ranking
公开(公告)号：US20230378872A1
公开(公告)日：2023-11-23
申请号：US18192772
申请日：2023-03-30
Inventor： Jae Soon Choi , Hak Hee Lee , Seok Mun Choi
CPC classification number: H02M3/1582 , H02M1/0095 , H02M7/4837
Abstract: A 3-level buck-boost converter includes: an inductor connected in series between a switching node and a ground terminal; an output capacitor connected between an output terminal from which an output voltage is output and a ground terminal; a first switch connected between an input terminal to which an input voltage is input and a top plate node; a second switch connected between the top plate node and the switching node; a third switch connected between the switching node and a bottom plate node; a fourth switch connected between the bottom plate node and the output terminal; a flying capacitor connected between the top plate node and the bottom plate node; balancing switches connected between the switching node and the balancing node; a top balancing capacitor connected between the input terminal and the balancing node; and a bottom balancing capacitor connected between the balancing node and the output terminal.
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公开(公告)号：US11811300B2
公开(公告)日：2023-11-07
申请号：US17440243
申请日：2020-04-14
Applicant: DCBEL INC.
Inventor： Hani Vahedi , Marc-André Forget
CPC classification number: H02M1/007 , B60L53/20 , H02M3/33584 , H02M7/04 , H02M7/4837 , H02M7/797 , B60L2210/10 , B60L2210/40 , H02M1/0009 , H02M1/42
Abstract: The present disclosure provides a method and apparatus for providing electrical isolation using a converter comprising a first converter working in a rectifier mode receiving AC current and providing DC current, a second converter working in an inverter mode receiving said DC current from said first converter and providing AC current, a transformer receiving said AC current from said second converter having an input and output, said transformer providing electric isolation between said input and output, a third converter working in a rectifier mode receiving AC current from said transformer and providing DC current, wherein at least one of said first, second and third converters is a multilevel converter.
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公开(公告)号：US11799393B2
公开(公告)日：2023-10-24
申请号：US17817656
申请日：2022-08-05
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Hong Liu , Wen Zhang , Wenfei Hu , Cheng Lu , Hongyang Wu
IPC: H02M7/493 , H02M7/5395 , H02M7/483 , H03K5/01
CPC classification number: H02M7/493 , H02M7/483 , H02M7/5395 , H03K5/01
Abstract: The application provides a dispersed carrier phase-shifting method and system. The method includes connecting at least two power modules to form a modular system; each power module including a control module for sampling at least twice a common state variate, signs of slopes of the common state variate at a first and second sampling time are opposite, and a reference time of the first sampling time for each control module is the same; and regulating a carrier frequency of the power module according to a relative size between a sampled values at the first and second sampling time. According to embodiments herein, carrier phase-shifting of modular system may be implemented without communication between respective modules. Under closed-loop control, optimal carrier phase-shifting can be automatically achieved under various duty ratios, thereby having good stability.
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公开(公告)号：US11784581B2
公开(公告)日：2023-10-10
申请号：US17644495
申请日：2021-12-15
Applicant: ABB Schweiz AG
Inventor： Federico Bertoldi , Kalle Ilves , Nan Chen
CPC classification number: H02M7/487 , H02M7/4815 , H02M7/539 , H02M7/4835 , H02M7/4837
Abstract: A converter and a method of operating a converter. The converter comprising a DC link capacitor, an upper arm (S1) and a lower arm (S4) with switching cells in series, an upper switch (S2) and a lower switch (S3). The upper switch (S2) and the lower switch (S3) are connected together and the connection point forming an output voltage terminal (a). The converter comprising further an upper valve component and a lower valve component, which are arranged such that the upper valve component allows current from the center point of the DC link capacitor towards the upper arm and the lower valve component allows current from the lower arm towards center point of the DC link capacitor. A current path through the upper valve component or the lower valve component comprises inductance to form a resonance circuit.
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公开(公告)号：US11777420B2
公开(公告)日：2023-10-03
申请号：US17928133
申请日：2021-04-30
Applicant: Siemens Aktiengesellschaft
Inventor： Viktor Hofmann , Mark-Matthias Bakran , Sebastian Semmler
CPC classification number: H02M7/4835 , H02M1/0074 , H02M1/084
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.
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