-
公开(公告)号：US20180091037A1
公开(公告)日：2018-03-29
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 , H02M1/10 , H02M5/458
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.
-
公开(公告)号：US20180062528A1
公开(公告)日：2018-03-01
申请号：US15670119
申请日：2017-08-07
发明人： Yan-Fei Liu , Zhiyuan Hu
CPC分类号： H02M3/33546 , H02M3/285 , H02M3/3376 , H02M2001/0058 , H02M2007/4818 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491 , Y02P80/112
摘要： Provided are methods and circuits for a resonant converter comprising at least one switch-controlled capacitor, wherein the at least one switch-controlled capacitor controls a resonant frequency of the resonant tank circuit. Provided are constant and variable switching frequency embodiments, and fill-wave and half-wave switch-controlled capacitor embodiments. Also provided are interleaved resonant converters based on constant and variable switching frequency, and full-wave and half-wave switch-controlled capacitor resonant converter embodiments. Interleaved embodiments overcome load sharing problems associated with prior interleaved resonant converters and enable phase shedding to improve light load efficiency.
-
公开(公告)号：US20180026524A1
公开(公告)日：2018-01-25
申请号：US15655986
申请日：2017-07-21
申请人： KONICA MINOLTA, INC.
发明人： Toru KASAMATSU , Mikiyuki AOKI , Kouei CHO
CPC分类号： H02M1/36 , G03G15/80 , H02M3/285 , H02M3/33507 , H02M2001/0032
摘要： A power supply device includes: a first transformer including a primary winding and a secondary winding; a first control circuit controlling a switching operation of a switch element, and cause the primary winding to generate a first AC voltage; an application circuit receiving a second AC voltage generated in the secondary winding by mutual induction with the primary winding, and apply an output voltage according to the second AC voltage to a load; a voltage detection circuit detecting a magnitude of a DC voltage obtained by rectifying the first AC voltage or the second AC voltage; and an output circuit outputting a stop signal indicating stop of the power supply device, when a result of comparison between the magnitude of the DC voltage and a threshold value set according to a magnitude of the load satisfies a predetermined condition, after reception of an instruction to stop voltage supply.
-
公开(公告)号：US09876437B2
公开(公告)日：2018-01-23
申请号：US14497400
申请日：2014-09-26
发明人： Chu T. Chung , Marc H. Coq , Cecil C. Dishman , Chien H. Lin , Randhir S. Malik
CPC分类号： H02M3/33569 , H01F3/14 , H01F27/38 , H02M3/285
摘要： An interleaved transformer or a transformer and integrated set of inductors formed via a magnetic structure comprising a set of E cores and an I core inserted between the set of E cores is provided in order to address issues that occur when a structured transformer is coupled together with inductor flux. Actual inductance exhibited by the transformers is controlled by a preselected precise gap between the I core and each of the E cores. The advantage of such a structured transformer cancels out the magnetic flux in certain legs of the magnetic structure requiring less magnetic material and thus, less core losses while improving the overall efficiency of a power supply.
-
公开(公告)号：US20180006435A1
公开(公告)日：2018-01-04
申请号：US15637704
申请日：2017-06-29
CPC分类号： H01T13/44 , F02P3/01 , F02P23/04 , F23Q3/006 , H01F38/12 , H01T13/20 , H01T15/00 , H01T19/00 , H02M3/285 , H02M3/3372 , H02M2001/0077 , H02M2001/325
摘要： Described is a supply circuit for a corona ignition device, with an input for connection to a direct voltage source, a first converter, a second converter, and an output for connecting a load. The two converters each generate an output voltage, which is provided on its secondary side and exceeds the input voltage. The two converters each contain a transformer that galvanically separates the primary side of the converter from its secondary side. At least one transistor switch is arranged between the input and primary side of the two converters for pulse width-modulation of the input voltage. The primary side of the second converter is connected in parallel with the primary side of the first converter, the secondary side of the second converter is connected in series with the secondary side of the first converter, the secondary sides of the two converters are each bridged in this series connection by at least one diode, so that an output voltage can be provided at the output of the supply circuit even given a failure of one of the two converters.
-
公开(公告)号：US09853551B2
公开(公告)日：2017-12-26
申请号：US15143917
申请日：2016-05-02
发明人： Masanori Ishigaki , Jongwon Shin
CPC分类号： H02M3/285 , H02M3/33584 , H02M2001/0058
摘要： A power transfer system includes DC-DC power conversion circuitry that has a first switch and a second switch on either side of a first transformer and a first capacitor and a second capacitor on either side of a second transformer that is connected in parallel with the first transformer. Primary secondary sides of the DC-DC power conversion circuitry are aligned based a direction of power transfer. A quantity of power transfer through the DC-DC power conversion circuitry is determined based on power and voltage characteristics of electrical components. A duty cycle and a switching frequency for the first switch or second switch is determined based on the quantity of power to be transferred. The primary and secondary switches are controlled using switching.
-
17.发明申请公开(公告)号：US20170366099A1
公开(公告)日：2017-12-21
申请号：US15690299
申请日：2017-08-30
发明人： Lunquan LI , Jiajian LIU , Sha YAN
CPC分类号： H02M7/1623 , H02M1/4233 , H02M3/285 , H02M3/33584 , H02M3/33592 , H02M2001/007 , H02M2007/2195 , Y02B70/1433 , Y02B70/1441
摘要： A high-frequency isolation alternating/direct current conversion circuit and a control method thereof are disclosed. The conversion circuit includes an alternating current source, a direct current source, a resonant capacitor, a high-voltage energy-storage filter, a high-frequency inverter bridge, a drive circuit, a resonant inductor, a high-frequency isolation transformer, a direct current side synchronous switch, a control circuit, and the like. The conversion circuit is made to be switched between two working modes, a rectification mode and an inversion mode by using a preset direct current source reference voltage as a reference, according to an external voltage reference, and by using different turn-on working modes of the high-frequency inverter bridge.
-
公开(公告)号：US09825531B2
公开(公告)日：2017-11-21
申请号：US13939015
申请日：2013-07-10
发明人： Gerald Deboy , Anthony Sanders
CPC分类号： H02M3/335 , H02M3/285 , H02M3/33507 , H02M3/33592 , Y02B70/1475 , Y10T307/406
摘要： A power circuit is described that includes a transformer arranged to store energy. The power circuit further includes a parallel switch device arranged in parallel to a secondary side winding of the transformer, an output port coupled to a device and the secondary side winding of the transformer, and a control unit. The control unit is configured to receive, from the device, information indicative of a required voltage associated with the device, and control, based on the information, the parallel switch device to generate, based on an amount of energy stored at the transformer, the required voltage as an output voltage at the output port.
-
公开(公告)号：US20170331377A1
公开(公告)日：2017-11-16
申请号：US15533779
申请日：2015-12-02
申请人： Robert Bosch GmbH
CPC分类号： H02M3/1563 , G06F1/10 , H02M1/12 , H02M1/44 , H02M3/1588 , H02M3/285 , H02M2001/0003 , H02M2003/1586 , H03L7/16 , H04B2215/067
摘要： A switching converter, including an input interface for providing an input voltage, an output interface for providing at least one output voltage, a voltage conversion device for converting the provided input voltage into one of the at least one output voltage, and a clock generator for providing a working clock, the clock generator being configured in such a way that the clock generator provides a modulated basic clock as the working clock. A control unit including such a switching converter, and a method for operating such a switching converter, are also described.
-
公开(公告)号：US20170317596A1
公开(公告)日：2017-11-02
申请号：US15143917
申请日：2016-05-02
发明人： Masanori ISHIGAKI , Jongwon SHIN
CPC分类号： H02M3/285 , H02M3/33584 , H02M2001/0058
摘要： A power transfer system includes DC-DC power conversion circuitry that has a first switch and a second switch on either side of a first transformer and a first capacitor and a second capacitor on either side of a second transformer that is connected in parallel with the first transformer. Primary secondary sides of the DC-DC power conversion circuitry are aligned based a direction of power transfer. A quantity of power transfer through the DC-DC power conversion circuitry is determined based on power and voltage characteristics of electrical components. A duty cycle and a switching frequency for the first switch or second switch is determined based on the quantity of power to be transferred. The primary and secondary switches are controlled using switching.
-
-
-
-
-
-
-
-
-
搜索结果
721 条记录 (耗时 0.024 秒)
