公开(公告)号：US11984815B2

公开(公告)日：2024-05-14

申请号：US17825211

申请日：2022-05-26

申请人： North Carolina State University

发明人： M A Awal ,  Srdjan Lukic ,  Iqbal Husain

IPC分类号： H02M7/217 ,  H02M1/00 ,  H02M1/04 ,  H02M1/12 ,  H02M1/36 ,  H02M3/335 ,  H02M7/219 ,  H02M7/797

CPC分类号： H02M7/2173 ,  H02M1/0012 ,  H02M1/0067 ,  H02M1/007 ,  H02M1/0074 ,  H02M1/045 ,  H02M1/12 ,  H02M1/36 ,  H02M3/33573 ,  H02M3/33584 ,  H02M7/219 ,  H02M7/797

摘要： Disclosed herein is a modular, scalable, and galvanically isolated power electronics converter topology for medium voltage AC (MVAC) to DC or high voltage AC (HVAC) to DC power conversion. A disclosed modular converter can comprise a low-voltage direct current bus and a centralized controller configured to regulate the low-voltage direct current bus. The modular converter can further comprise a plurality of three-phase blocks connected in series. Individual three-phase blocks of the plurality of three-phase blocks can comprise a plurality of single-phase modules connected in an input-series output-parallel configuration. The modular converter can further comprise a filter connected between a grid input and the plurality of three-phase blocks and a pulse-width modulator configured to generate encoded gate pulses for the individual three-phase blocks of the plurality of three-phase blocks.

公开(公告)号：US11942872B2

公开(公告)日：2024-03-26

申请号：US18164666

申请日：2023-02-06

申请人： Guangdong Sofar Smart Solar Technology Co., Ltd.

发明人： Lei Chang ,  Xinwei Liu ,  Dongdong Yang ,  Hongyuan Jin

IPC分类号： H02M1/00 ,  H02M1/04 ,  H02M3/00 ,  H02M3/28 ,  H02M7/48 ,  H02M7/493 ,  H02M3/158 ,  H02M3/335

CPC分类号： H02M7/4815 ,  H02M1/0064 ,  H02M1/04 ,  H02M3/01 ,  H02M3/285 ,  H02M7/493 ,  H02M3/1584 ,  H02M3/1586 ,  H02M3/33523

摘要： The present application discloses a multi-path resonant circuit and a resonant converter. The multi-path resonant circuit includes at least two parallel N-phase resonant circuits, wherein N is an integer greater than or equal to 3. The at least two parallel N-phase resonant circuits include a first N-phase resonant circuit and a second N-phase resonant circuit. A first resonant inductor in any phase resonant circuit of the first N-phase resonant circuit is coupled with a second resonant inductor in any phase resonant circuit of the second N-phase resonant circuit. In this way, current sharing of the multi-path resonant circuit can be realized through a simpler structure.

公开(公告)号：US20220416684A1

公开(公告)日：2022-12-29

申请号：US17825211

申请日：2022-05-26

申请人： North Carolina State University

发明人： M A Awal ,  Srdjan Lukic ,  Iqbal Husain

IPC分类号： H02M7/217 ,  H02M1/00 ,  H02M1/04 ,  H02M7/219

摘要： Disclosed herein is a modular, scalable, and galvanically isolated power electronics converter topology for medium voltage AC (MVAC) to DC or high voltage AC (HVAC) to DC power conversion. A disclosed modular converter can comprise a low-voltage direct current bus and a centralized controller configured to regulate the low-voltage direct current bus. The modular converter can further comprise a plurality of three-phase blocks connected in series. Individual three-phase blocks of the plurality of three-phase blocks can comprise a plurality of single-phase modules connected in an input-series output-parallel configuration. The modular converter can further comprise a filter connected between a grid input and the plurality of three-phase blocks and a pulse-width modulator configured to generate encoded gate pulses for the individual three-phase blocks of the plurality of three-phase blocks.

公开(公告)号：US11424677B2

公开(公告)日：2022-08-23

申请号：US16890856

申请日：2020-06-02

申请人： Inertech IP LLC

发明人： Subrata K. Mondal

IPC分类号： H02J7/00 ,  H02M3/155 ,  H02M7/527 ,  H02M1/04 ,  H02M1/08 ,  H02J9/00 ,  H02M7/487 ,  H02M3/158 ,  H02M3/335 ,  H02J9/06 ,  H02M1/00

摘要： Systems and methods of this disclosure use low voltage energy storage devices to supply power at a medium voltage from an uninterruptible power supply (UPS) to a data center load. The UPS includes a low voltage energy storage device (ultracapacitor/battery), a high frequency (HF) bidirectional DC-DC converter, and a multi-level (ML) inverter. The HF DC-DC converter uses a plurality of HF planar transformers, multiple H-bridge circuits, and gate drivers for driving IGBT devices to generate a medium DC voltage from the ultracapacitor/battery energy storage. The gate drivers are controlled by a zero voltage switching (ZVS) controller, which introduces a phase shift between the voltage on the primary and secondary sides of the transformers. When the primary side leads the secondary side, the ultracapacitor/battery discharges and causes the UPS to supply power to the data center, and when the secondary side leads the primary side, power flows from the grid back to the UPS, thereby recharging the ultracapacitor/battery.

公开(公告)号：US09998021B2

公开(公告)日：2018-06-12

申请号：US15334173

申请日：2016-10-25

申请人： Alpha and Omega Semiconductor Incorporated

发明人： Kuang Ming Chang ,  Lin Chen ,  Qihong Huang

IPC分类号： H02M3/335 ,  H02M1/08 ,  H02M1/32 ,  H02M1/00 ,  H02M7/48 ,  H02M1/04

CPC分类号： H02M3/33592 ,  H02M1/047 ,  H02M1/08 ,  H02M1/083 ,  H02M1/32 ,  H02M1/44 ,  H02M2001/0009 ,  H02M2001/0058 ,  H02M2007/4815

摘要： A flyback converter implements a Forced Zero Voltage Switching (ZVS) timing control by detecting a positive current excursion of the secondary winding current as the synchronous rectifier turn off trigger. The synchronous rectifier switch is turned on near the end of the switching cycle or the on duration is extended to develop a current ripple on the secondary winding current. The control circuit of the flyback converter detects a positive current excursion on the secondary winding current to turn off the synchronous rectifier and to start the next switching cycle. At this point, the voltage across the primary switch has been discharged and the primary switch can be turned on with zero drain-to-source voltage. In other embodiments, zero voltage switching for the off-transition of the primary switch is realized by coupling a capacitor across the primary switch or by coupling a capacitor across the primary winding, or both.

公开(公告)号：US3218541A

公开(公告)日：1965-11-16

申请号：US9261961

申请日：1961-03-01

申请人： ENGLISH ELECTRIC CO LTD

发明人： DESMOND AINSWORTH JOHN

IPC分类号： H02H7/127 ,  H02M1/04 ,  H02M7/15 ,  H03K17/723

CPC分类号： H02M7/15 ,  H02H7/127 ,  H02M1/045 ,  H03K17/723 ,  Y02B70/1483

公开(公告)号：US3082352A

公开(公告)日：1963-03-19

申请号：US8062661

申请日：1961-01-04

申请人： ELEMAG ANSTALT

发明人： RUDOLF DIENER

IPC分类号： H02M1/04 ,  H02M7/15

CPC分类号： H02M1/042 ,  H02M7/15

公开(公告)号：US3049660A

公开(公告)日：1962-08-14

申请号：US5270460

申请日：1960-08-29

申请人： BENDIX CORP

发明人： ALBERT ROBERTI MICHAEL ,  ALBEN WALTER RALPH

IPC分类号： G05F1/445 ,  H02M1/04 ,  H02M1/08

CPC分类号： G05F1/445 ,  H02M1/04 ,  H02M1/081

公开(公告)号：US2924749A

公开(公告)日：1960-02-09

申请号：US69795457

申请日：1957-11-21

申请人： SIEMENS AG

发明人： LUDWIG FILBERICH

IPC分类号： H02M1/04

CPC分类号： H02M1/045

公开(公告)号：US2829312A

公开(公告)日：1958-04-01

申请号：US47958055

申请日：1955-01-03

申请人： PHILIPS CORP

发明人： BUYS JACOB

IPC分类号： G05B11/01 ,  H01J20060101 ,  H01J17/04 ,  H02M1/04

CPC分类号： G05B11/013 ,  H01J17/04 ,  H02M1/042