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公开(公告)号：US09812977B2
公开(公告)日：2017-11-07
申请号：US14676515
申请日：2015-04-01
Applicant: Futurewei Technologies, Inc.
Inventor： Liming Ye , Heping Dai , Dianbo Fu , Daoshen Chen
CPC classification number: H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
Abstract: A method comprises determining an operating mode based upon an input voltage and an output voltage of a resonant converter, wherein the resonant converter comprises a switch network coupled to an input dc power source, a resonant tank coupled to the switch network and a transformer coupled between the resonant tank and a secondary rectifier, wherein the secondary rectifier is a full-bridge rectifier, configuring the switch network to operate at a buck converter mode in response to a first input voltage and configuring the secondary rectifier to operate at a boost converter mode in response to a second input voltage, wherein the first voltage is higher than the output voltage and the second voltage is lower than the output voltage.
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公开(公告)号：US09806637B2
公开(公告)日：2017-10-31
申请号：US13874303
申请日：2013-04-30
Applicant: FutureWei Technologies, Inc.
Inventor： Dianbo Fu
CPC classification number: H02M7/539 , H02M7/487 , H02M7/538 , H02M2001/0058 , Y02B70/1491 , Y10T307/50 , Y10T307/707 , Y10T307/747
Abstract: An inverter comprises a first switch coupled to an input of an output filter and a positive dc bus, a second switch coupled to the input of the output filter and a negative dc bus, a first freewheeling apparatus coupled to the first switch, the second switch and ground, a first soft switching network coupled to the first freewheeling apparatus and the first switch, wherein the first soft switching network is configured such that the first switch is of a first zero voltage transition during a turn-on process of the first switch and a second soft switching network coupled to the first freewheeling apparatus and the second switch, wherein the second soft switching network is configured such that the second switch is of a second zero voltage transition during a turn-on process of the second switch.
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公开(公告)号：US09614453B2
公开(公告)日：2017-04-04
申请号：US14548567
申请日：2014-11-20
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Liming Ye , Dianbo Fu , Daoshen Chen
CPC classification number: H02M3/3372 , H02M3/07 , H02M3/1582 , H02M3/18 , H02M3/33576 , H02M3/337 , H02M2001/0058 , H02M2001/007 , Y02B70/1433 , Y02B70/1491
Abstract: An apparatus comprises an isolated power converter coupled between an input dc power source, wherein the isolated power converter comprises a first switch network coupled to a first transformer winding through a first resonant tank and a second switch network coupled to a second transformer winding through a second resonant tank and a dc/dc converter coupled to the second switch network.
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公开(公告)号：US09595877B2
公开(公告)日：2017-03-14
申请号：US14500486
申请日：2014-09-29
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Dianbo Fu , Liming Ye , Daoshen Chen
CPC classification number: H02M3/33576 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: An apparatus comprises an isolated power converter coupled to an input dc power source, wherein the isolated power converter comprises a primary switching network operating at a fixed switching frequency, a secondary resonant tank including a dc blocking capacitor and a rectifier having two input terminals coupled to the secondary resonant tank, an output capacitor coupled between a first output terminal of the rectifier and a load and a dc/dc converter coupled between a second output terminal of the rectifier and the load.
Abstract translation: 一种装置包括耦合到输入直流电源的隔离功率转换器，其中所述隔离功率转换器包括以固定开关频率工作的初级开关网络，包括直流隔离电容器的次级谐振箱和具有耦合到 次级谐振回路，耦合在整流器的第一输出端和负载之间的输出电容器和耦合在整流器的第二输出端子与负载之间的dc / dc转换器。
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公开(公告)号：US20160268924A1
公开(公告)日：2016-09-15
申请号：US14656611
申请日：2015-03-12
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Yunfeng Liu , Yongbing Gao
IPC: H02M7/537
Abstract: An inverter comprises a first input capacitor and a second input capacitor connected in series, an inverting unit comprising a first switch, a second switch, a third switch and a fourth switch connected in series, wherein the inverting unit is connected to an input of an L-C filter, a first bidirectional conductive path connected between a common node of the first switch and the second switch, and a common node of the first input capacitor and the second input capacitor, a second bidirectional conductive path connected between a common node of the third switch and the fourth switch, and the common node of the first input capacitor and the second input capacitor and a flying capacitor connected between the common node of the first switch and the second switch, and the common node of the third switch and the fourth switch.
Abstract translation: 反相器包括串联连接的第一输入电容器和第二输入电容器，反相单元包括串联连接的第一开关，第二开关，第三开关和第四开关，其中反相单元连接到 LC滤波器，连接在第一开关的公共节点和第二开关之间的第一双向导电路径，以及第一输入电容器和第二输入电容器的公共节点，第二双向导电路径，连接在第三开关的公共节点之间 开关和第四开关，以及第一输入电容器和第二输入电容器的公共节点以及连接在第一开关的公共节点和第二开关之间的飞跨电容器，以及第三开关和第四开关的公共节点 。
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Patent Agency Ranking
96.发明授权Apparatus and efficiency point tracking method for high efficiency resonant converters 有权高效率谐振变换器的装置和效率点跟踪方法公开(公告)号：US09444346B2
公开(公告)日：2016-09-13
申请号：US14056532
申请日：2013-10-17
Applicant: FutureWei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
CPC classification number: H02M3/33507 , H02M1/14 , H02M3/156 , H02M3/22 , H02M3/325 , H02M3/33523 , H02M3/33569 , H02M3/33576 , H02M3/33592 , H02M3/337 , H02M3/3376 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A converter comprises an input stage coupled to a power source, wherein the input stage comprises a plurality of power switches, a resonant tank coupled to the plurality of power switches, a transformer coupled to the resonant tank, an output stage coupled to the transformer, an efficiency point tracking indicator coupled to the converter, a detector coupled to the efficiency point tracking indicator and a control circuit configured to receive an efficiency point tracking signal from the detector and adjust a switching frequency of the power switches based upon the efficiency point tracking signal.
Abstract translation: A转换器包括耦合到电源的输入级，其中所述输入级包括多个功率开关，耦合到所述多个功率开关的谐振槽，耦合到所述谐振回路的变压器，耦合到所述变压器的输出级， 耦合到转换器的效率点跟踪指示器，耦合到效率点跟踪指示器的检测器和配置成从检测器接收效率点跟踪信号的控制电路，并且基于效率点跟踪信号调整功率开关的开关频率 。
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公开(公告)号：US20160149501A1
公开(公告)日：2016-05-26
申请号：US14548567
申请日：2014-11-20
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Liming Ye , Dianbo Fu , Daoshen Chen
IPC: H02M3/335
CPC classification number: H02M3/3372 , H02M3/07 , H02M3/1582 , H02M3/18 , H02M3/33576 , H02M3/337 , H02M2001/0058 , H02M2001/007 , Y02B70/1433 , Y02B70/1491
Abstract: An apparatus comprises an isolated power converter coupled between an input dc power source, wherein the isolated power converter comprises a first switch network coupled to a first transformer winding through a first resonant tank and a second switch network coupled to a second transformer winding through a second resonant tank and a dc/dc converter coupled to the second switch network.
Abstract translation: 一种装置包括耦合在输入直流电源之间的隔离功率转换器，其中所述隔离功率转换器包括耦合到通过第一谐振储能器的第一变压器绕组的第一开关网络和通过第二谐振回路耦合到第二变压器绕组的第二开关网络 谐振箱和耦合到第二开关网络的dc / dc转换器。
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公开(公告)号：US09337743B2
公开(公告)日：2016-05-10
申请号：US14052583
申请日：2013-10-11
Applicant: FutureWei Technologies, Inc.
Inventor： Heping Dai , Daoshen Chen , Dianbo Fu
CPC classification number: H02M3/33546 , H02M1/08 , H02M3/285 , H02M3/3353 , H02M3/33553 , H02M3/33576 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491 , Y02P80/112
Abstract: A converter comprises an input stage coupled to a power source, wherein the input stage comprises a plurality of power switches, a first resonant tank coupled to the input stage, wherein the first resonant tank is of a first Q value, a second resonant tank coupled to the input stage, wherein the second resonant tank is of a second Q value, a transformer coupled to the input stage through the first resonant tank and the second resonant tank and an output stage coupled to the transformer.
Abstract translation: A转换器包括耦合到电源的输入级，其中输入级包括多个功率开关，耦合到输入级的第一谐振回路，其中第一谐振回路具有第一Q值，第二谐振回路耦合 到所述输入级，其中所述第二谐振回路具有第二Q值，通过所述第一谐振回路耦合到所述输入级的变压器和所述第二谐振回路以及耦合到所述变压器的输出级。
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公开(公告)号：US09281752B2
公开(公告)日：2016-03-08
申请号：US14071446
申请日：2013-11-04
Applicant: FutureWei Technologies, Inc.
Inventor： Dianbo Fu , Heping Dai , Liming Ye , Daoshen Chen
CPC classification number: H02M3/33546 , H02M3/33576 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A method comprises providing a resonant converter, wherein the resonant converter comprises an input switch network coupled to a power source, wherein the input switch network comprises a plurality of power switches, a resonant tank coupled to the plurality of power switches, a transformer coupled to the resonant tank and an output stage coupled to the transformer, wherein the output stage comprises a synchronous rectifier formed by a first switch and a second switch, detecting a drain voltage of the first switch, comparing the drain voltage with a predetermined voltage threshold, wherein the drain voltage is coupled to a negative input of a comparator and the predetermined voltage threshold is coupled to a positive input of the comparator, generating a logic state based upon an output of the comparator and adjusting, by a control circuit, a switching frequency of the resonant converter based upon the logic state.
Abstract translation: 一种方法包括提供谐振转换器，其中所述谐振转换器包括耦合到电源的输入开关网络，其中所述输入开关网络包括多个功率开关，耦合到所述多个功率开关的谐振槽，耦合到 所述谐振槽和耦合到所述变压器的输出级，其中所述输出级包括由第一开关和第二开关形成的同步整流器，检测所述第一开关的漏极电压，将所述漏极电压与预定电压阈值进行比较，其中 漏极电压耦合到比较器的负输入，并且预定电压阈值耦合到比较器的正输入，基于比较器的输出产生逻辑状态，并通过控制电路调整开关频率 基于逻辑状态的谐振转换器。
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公开(公告)号：US09190934B2
公开(公告)日：2015-11-17
申请号：US14199749
申请日：2014-03-06
Applicant: FutureWei Technologies, Inc.
Inventor： Dianbo Fu
CPC classification number: H02M7/537 , H02J3/383 , H02M3/158 , H02M7/483 , H02M7/487 , H02M2001/007 , H02M2007/4822 , Y02E10/563
Abstract: An inverter comprises a first boost apparatus, a second boost apparatus, a first half-cycle switching network coupled to the first boost apparatus, wherein the first half-cycle switching network is configured such that a first three-level conductive path is formed when a voltage at a dc source is greater than an instantaneous value of a voltage at an output of the inverter and a first five-level conductive path is formed when the instantaneous value of the voltage at the output of inverter is greater than the voltage at the dc source.
Abstract translation: 逆变器包括第一升压装置，第二升压装置，耦合到第一升压装置的第一半周期开关网络，其中第一半周期开关网络被配置为使得当第一升压装置 在直流电源处的电压大于逆变器输出端的电压的瞬时值，并且当逆变器输出端的电压的瞬时值大于直流电压时形成第一五电平导通通路 资源。
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