公开(公告)号：US20230396169A1

公开(公告)日：2023-12-07

申请号：US18248673

申请日：2021-10-07

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION

发明人： Yuusuke KOUNO ,  Toshiyuki BABA ,  Yasuomi MAKI ,  Yuichiro NOZAKI ,  Tsunehito FUJITA

IPC分类号： H02M3/28 ,  H02M1/14 ,  H02M5/458

CPC分类号： H02M3/285 ,  H02M5/458 ,  H02M1/14

摘要： In an electric power conversion device according to an embodiment, a chopper converts electric power from a power supply into direct-current power. An inverter converts the direct-current power into alternating-current power. Pairs of resonant capacitors are connected to a direct-current input section of the inverter. Each of the pairs is in series. Primary windings of high-frequency transformers are connected to the inverter and respective midpoints of the pairs of resonant capacitors. The high-frequency transformers convert the alternating-current power of the inverter. Rectifiers convert alternating-current power supplied from secondary windings of the high-frequency transformers into direct-current power. One or more voltage detectors detect output voltage of one or more of the rectifiers. A control device controls the chopper on the basis of output of the voltage detectors such that an output voltage of the direct-current power comes to a predetermined voltage value.

公开(公告)号：US11811327B2

公开(公告)日：2023-11-07

申请号：US17972290

申请日：2022-10-24

申请人： DELTA ELECTRONICS, INC.

发明人： Sheng-Hua Li ,  Wen-Lung Huang

IPC分类号： H02M1/00 ,  H02M3/24 ,  H02J3/38 ,  H02J7/00 ,  H02M3/28

CPC分类号： H02M3/24 ,  H02M1/009 ,  H02J3/381 ,  H02J7/007 ,  H02J2207/20 ,  H02J2300/24 ,  H02M1/007 ,  H02M3/285

摘要： 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.

公开(公告)号：US11742766B2

公开(公告)日：2023-08-29

申请号：US17194612

申请日：2021-03-08

申请人： ESAB AB

发明人： Andrzej Mnich

IPC分类号： H02M3/335 ,  B23K9/10 ,  B23K9/09 ,  B23K9/16 ,  H02M1/08 ,  H02M3/28 ,  H02M1/00

CPC分类号： H02M3/33576 ,  B23K9/092 ,  B23K9/1043 ,  B23K9/1062 ,  B23K9/16 ,  H02M1/083 ,  H02M1/0009 ,  H02M3/285

摘要： An apparatus to provide welding power. The apparatus may include a direct current-alternate current (DC-AC) power converter to output a primary current and a transformer stage. The transformer stage may include at least one power transformer to receive the primary current from the (DC-AC) power converter on a primary side of the transformer stage and to output a first voltage through a first rectifier and a first set of secondary windings disposed on a secondary side of the transformer stage. The transformer stage may further include an auxiliary set of secondary windings disposed on the secondary side to output a second voltage. The apparatus may also include a pair of active unidirectional switches disposed on the secondary side to receive the second voltage from the auxiliary set of secondary windings.

公开(公告)号：US20230179092A1

公开(公告)日：2023-06-08

申请号：US17987548

申请日：2022-11-15

申请人： Delta Electronics, Inc.

发明人： Da Jin ,  Yahong Xiong ,  Litao Qian ,  Qinghua Su

IPC分类号： H02M3/00 ,  H02M3/158 ,  H02M3/28

CPC分类号： H02M3/015 ,  H02M3/1584 ,  H02M3/285

摘要： A power conversion circuit is provided. According to the topologies of power conversion circuits and the corresponding control manners of the present disclosure, the output voltage is greatly reduced relative to the input voltage, and thus the function of voltage reduction is achieved. Moreover, a voltage-second product of the time and the voltage across the first output inductor and a voltage-second product of the time and the voltage across the second output inductor are both greatly reduced. Accordingly, the inductance, volume and loss of the first output inductor and the second output inductor are greatly reduced. Therefore, the voltage regulation module may receive the low output voltage outputted by the power conversion circuit, thereby reducing the overall volume of the voltage regulation module and increasing the power conversion density and conversion efficiency of the voltage regulation module.

公开(公告)号：US11664725B2

公开(公告)日：2023-05-30

申请号：US17464229

申请日：2021-09-01

申请人： Delta Electronics (Thailand) Public Co., Ltd.

发明人： Philipp Rehlaender ,  Frank Schafmeister ,  Joachim Böcker

IPC分类号： H02M3/335 ,  H02M3/00 ,  H02M3/28 ,  H02M3/337 ,  H02M7/48

CPC分类号： H02M3/015 ,  H02M3/285 ,  H02M3/3376 ,  H02M3/33546 ,  H02M7/4818

摘要： An interleaved LLC converter arrangement includes two or more LLC converters for transferring power from an input side to an output side, wherein the two or more LLC converters include a first LLC converter and a second LLC converter connected in parallel on the input side and on the output side and wherein each LLC converter includes a bridge inverter at the input side. For balancing the power transfer among the LLC converters if for example the second LLC converter transfers more power from the input side to the output side than the first LLC converter, each leg of the bridge of the bridge inverter of the first LLC converter is operated with a duty cycle of 0.5 and at least one leg of the bridge of the bridge inverter of the second LLC converter is operated with a duty cycle different from 0.5.

公开(公告)号：US20190252114A1

公开(公告)日：2019-08-15

申请号：US16211349

申请日：2018-12-06

申请人： Delta Electronics (Shanghai) CO., LTD

发明人： Zengyi LU ,  Xinwei LIU ,  Shiwei LIU ,  Xingkuan GUO ,  Jinfa ZHANG

IPC分类号： H01F27/30 ,  H01F27/24 ,  H01F30/12

CPC分类号： H01F27/306 ,  H01F3/14 ,  H01F27/24 ,  H01F27/346 ,  H01F27/38 ,  H01F30/12 ,  H01F37/00 ,  H02M3/24 ,  H02M3/285 ,  H02M3/33569 ,  H02M2001/0058

摘要： The present disclosure relates to a magnetic component, a converter and an inductor. The magnetic component includes a magnetic core including a first winding window, a second winding window and a third winding window; and a winding including a first winding, a second winding and a third winding, which are wound in the first winding window, the second winding window and the third winding window, respectively, wherein when an alike current flows through the first winding, a second winding and the third winding, magnetic fluxes respectively generated in magnetic core units forming the first winding window and the second winding window are superposed on a first common magnetic column therebetween, and magnetic fluxes respectively generated in magnetic core units forming the second winding window and the third winding window are superposed on a second common magnetic column therebetween.

公开(公告)号：US20190115838A1

公开(公告)日：2019-04-18

申请号：US16189714

申请日：2018-11-13

申请人： Silanna Asia Pte Ltd

发明人： Aleksandar Radic ,  Seyed-Behzad Mahdavikhah-Mehrabad

IPC分类号： H02M3/335 ,  H02M3/28 ,  H02M1/08 ,  H02M1/34

CPC分类号： H02M3/33507 ,  H02M1/08 ,  H02M1/34 ,  H02M3/285 ,  H02M2001/0074

摘要： The combined voltage regulator and snubber circuit generally has a voltage regulator device in parallel with the energy storage element of the snubber circuit operatively connectable in series with a leakage inductance current path; the leakage inductance being part of a magnetic component utilized in a switch-mode power supply having an input voltage source, controllable semiconductor switches, freewheeling semiconductor switches, feedback controller, reactive energy storage components and a load; the voltage regulator generally providing constant or variable voltage to the gate driver of the controllable semiconductor and/or feedback controller; the snubber circuit generally recycling leakage inductance energy to the input capacitor of a neighbouring cell in a multi-cell stacked converter.

公开(公告)号：US20180241311A1

公开(公告)日：2018-08-23

申请号：US15751798

申请日：2016-07-01

申请人： S9ESTRE, LLC

发明人： Bernd SCHAFFERER

IPC分类号： H02M3/158 ,  H02M1/088

CPC分类号： H02M3/1584 ,  H02J50/00 ,  H02M1/088 ,  H02M3/158 ,  H02M3/285 ,  H02M3/335 ,  H02M3/33507 ,  H02M3/33592 ,  H02M2001/0048

摘要： Methods and devices for power conversion. High frequency electromagnetic waves traveling in coupled transmission lines and their reflective properties are used to perform the power conversion. The use of high frequency operation allows for physically small transmission lines. The high operating frequencies also allow for small filter capacitors at the outputs of the power converter and hence allowing for fast response times in load changes or fast signal changes in case of a gate driver. The transmission lines can be implemented on the printed circuit board, laminate or even on chip. In case of a step up converter the switching elements are not subjected to the higher output voltage levels of the power converter and can therefore be implemented in a lower voltage process technology. Further, embodiments with and without galvanic isolation are described and physical embodiments to reduce undesired electromagnetic emissions are disclosed.

公开(公告)号：US20180131283A1

公开(公告)日：2018-05-10

申请号：US15684397

申请日：2017-08-23

申请人： ROHM CO., LTD.

发明人： Akihiro ONO

IPC分类号： H02M3/335 ,  H02J1/06 ,  G06F1/26

CPC分类号： H02M3/33507 ,  G06F1/26 ,  G06F1/266 ,  H02J1/06 ,  H02M3/285 ,  H02M3/33523 ,  H02M3/33576 ,  H02M2001/0006 ,  H02M2001/007 ,  H02M2001/008

摘要： A PD device comprises: a DC/DC converter disposed between an input and a VBUS output; a primary-side controller configured to control an input current of the DC/DC converter; a signal conversion and switching circuit coupled to a control input and configured to executes signal conversion and switching; an output capacitor CO connected between the VBUS output and the signal conversion and switching circuit; and a secondary-side controller coupled to the signal conversion and switching circuit, and configured to receive the control input signals subjected to the signal conversion and switching executed in the signal conversion and switching circuit, and to feed back the control input signals to the primary-side controller. The primary-side controller varies an output voltage value and an available output current value (MAX value) of the DC/DC converter by controlling the input current on the basis of the control input signals fed back from the secondary-side controller.

公开(公告)号：US09960666B2

公开(公告)日：2018-05-01

申请号：US15520420

申请日：2016-03-16

申请人： Southeast University

发明人： Jianfeng Zhao ,  Dongye Li ,  Zhendong Ji ,  Yichao Sun

IPC分类号： H02M1/32 ,  H02M3/335 ,  H02M7/5387 ,  H02M5/458 ,  H02M1/10 ,  H02M1/00

CPC分类号： H02M1/32 ,  H02M1/10 ,  H02M3/285 ,  H02M3/33592 ,  H02M3/3376 ,  H02M5/4585 ,  H02M7/5387 ,  H02M2001/007 ,  H02M2001/325 ,  H02M2007/4835

摘要： Disclosed in the present invention is a four-port power electronic transformer based on a hybrid modular multilevel converter (MMCs). The four-port power electronic transformer includes a hybrid MMC, direct current (DC)/DC converters, and an inverter. Each DC/DC converter includes a front stage part, a high frequency transformation part and a back stage part. Compared with an existing power electronic transformer, the present invention has the following characteristics: an MMC module and a front stage of a DC/DC circuit connected to the MMC module jointly complete DC fault ride-through, and the number of adopted devices is small; the MMC module controls a DC voltage and the DC/DC circuit controls power; voltages of one or two capacitors in the module can be controlled independently or simultaneously; and the four-port power electronic transformer has four ports: a high-voltage DC port, a high-voltage alternating current (AC) port, a low-voltage DC port, and a low-voltage AC port, and is applicable to a high-voltage high-power scenario with multiple voltage types and levels, particularly to the energy internet to be used as an energy router and the like.