公开(公告)号：US10135350B2

公开(公告)日：2018-11-20

申请号：US15954424

申请日：2018-04-16

Applicant: Futurewei Technologies, Inc.

Inventor： Liming Ye ,  Heping Dai ,  Dianbo Fu

IPC: H02M3/335 ,  H02M7/483 ,  H02M1/00

Abstract: A converter is provided. The converter includes a first DC/DC converter, a non-isolated DC/DC converter and a control circuit. The first DC/DC converter includes a transformer, a primary side inverter and a secondary side rectifier. The primary side inverter and a secondary side rectifier are operable at multiple operating modes. The control circuit determines an operating mode for the primary side inverter or the secondary side rectifier, and controls the primary side inverter or the secondary side rectifier to change its respective operating mode.

公开(公告)号：US20180233614A1

公开(公告)日：2018-08-16

申请号：US15650370

申请日：2017-07-14

Applicant: Futurewei Technologies, Inc.

Inventor： Heping Dai ,  Liming Ye ,  Dianbo Fu ,  Xiaolin Mao

IPC: H01L31/05 ,  H01L31/18 ,  H01L31/02 ,  H01L31/0443

Abstract: The disclosure relates to technology for providing power, voltage, and/or current from a combination of photovoltaic modules. In one aspect, a system has central power optimizer, which is located between a group of distributed power optimizers and a solar inverter. Each distributed power optimizer may be connected to the DC output of one photovoltaic modules, and may be used to regulate the power output of the photovoltaic module. The combined DC voltages of the distributed power optimizers may be provided to the input of the central power optimizer.

公开(公告)号：US09977455B2

公开(公告)日：2018-05-22

申请号：US15198056

申请日：2016-06-30

Applicant: Futurewei Technologies, Inc.

Inventor： Heping Dai ,  Liming Ye ,  Dianbo Fu

IPC: G05F5/00 ,  G01R19/00 ,  H02M3/156 ,  H02M1/00

CPC classification number: G05F5/00 ,  G01R19/00 ,  H02M3/156 ,  H02M2001/0009

Abstract: A configurable impedance circuit includes a controller that senses a rectified voltage and generates a first and second control signals based on a comparison of the rectified voltage to at least one threshold voltage. The configurable impedance circuit also includes a filter for filtering the rectified voltage that couples a plurality of capacitors in series to the rectified voltage in a first configuration based on the first control signal and couples the plurality of capacitors in parallel to the rectified voltage in a second configuration based on the second control signal.

公开(公告)号：US09973099B2

公开(公告)日：2018-05-15

申请号：US14836630

申请日：2015-08-26

Applicant: Futurewei Technologies, Inc.

Inventor： Liming Ye ,  Heping Dai ,  Dianbo Fu

IPC: H02M3/335 ,  H02M7/483 ,  H02M1/00

CPC classification number: H02M3/33576 ,  H02M7/483 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A converter is provided. The converter includes a first DC/DC converter, a non-isolated DC/DC converter and a control circuit. The first DC/DC converter includes a transformer, a primary side inverter and a secondary side rectifier. The primary side inverter and a secondary side rectifier are operable at multiple operating modes. The control circuit determines an operating mode for the primary side inverter or the secondary side rectifier, and controls the primary side inverter or the secondary side rectifier to change its respective operating mode.

公开(公告)号：US09923451B2

公开(公告)日：2018-03-20

申请号：US15095885

申请日：2016-04-11

Applicant: Futurewei Technologies, Inc.

Inventor： Liming Ye ,  Heping Dai ,  Dianbo Fu

IPC: H02M1/14 ,  H02M7/06 ,  G05F5/00

CPC classification number: H02M1/14 ,  G05F5/00 ,  H02M1/15 ,  H02M1/4266 ,  H02M7/066 ,  Y02B70/123

Abstract: A configurable impedance circuit is provided, including a filter for filtering a received DC voltage and a controller. The filter includes a first capacitor, a second capacitor, and a selectable switch coupled in series with the second capacitor and coupled to receive a control signal. The selectable switch and the second capacitor are selectively coupled in parallel with the first capacitor. The controller is connected to sense a differential voltage across the second capacitor and configured to generate the control signal to open or close the selectable switch based on the differential voltage across the second capacitor, so as to maintain a voltage range across the second capacitor. According to disclosure of the present invention, the total physical size of the capacitors is reduced and the size of the power supply is reduced accordingly.

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

IPC: H02M3/335 ,  H02M1/00

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.

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

IPC: H02M3/335 ,  H02M3/337 ,  H02M1/00

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.

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

IPC: H02M3/335 ,  H02M1/00

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。

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

IPC: H02M3/22 ,  H02M3/156 ,  H02M3/325 ,  H02M3/335 ,  H02M3/337 ,  H02M1/00

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 。

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。