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公开(公告)号：US20190096572A1
公开(公告)日：2019-03-28
申请号：US16200164
申请日：2018-11-26
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Yunfeng Liu , Yanshen Hu
Abstract: A system comprises a first inverter and a second inverter connected in parallel, a coupled inductor connected to outputs of the first inverter and the second inverter, wherein the coupled inductor comprises a plurality of windings formed by a single winding wire and an output filter coupled to an output of the coupled inductor.
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公开(公告)号：US10230364B2
公开(公告)日：2019-03-12
申请号：US15497390
申请日：2017-04-26
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Zhaohui Wang , Jun Zhang , Lei Shi
Abstract: A device comprises a first diode and a second diode connected in series between a first terminal and a second terminal of a switching element, wherein an anode of the first diode is directly connected to an anode of the second diode, a third diode connected between the first terminal and the second terminal of the switching element and a first switch connected in parallel with the first diode.
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公开(公告)号：US10224827B1
公开(公告)日：2019-03-05
申请号：US16007750
申请日：2018-06-13
Applicant: Futurewei Technologies, Inc.
Inventor： Huibin Zhu , Xiaolin Mao , Heping Dai , Dianbo Fu
Abstract: According to one aspect of the present disclosure, there is provided an apparatus that includes a first power converter stage connected to a first side of a first transformer, and a second power converter stage connected to a first side of a second transformer. The apparatus further includes an interleaved multi-bridge circuit connected to the second side of the first transformer and to the second side of the second transformer. The apparatus further includes a controller that is configured to operate the interleaved multi-bridge circuit in a parallel mode in which the second sides of the first and second transformers are in parallel at a DC terminal of the interleaved multi-bridge circuit and in a series mode in which the second sides of the first and second transformers are in series at the DC terminal.
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公开(公告)号：US10177661B2
公开(公告)日：2019-01-08
申请号：US14739827
申请日：2015-06-15
Applicant: Futurewei Technologies, Inc.
Inventor： Liming Ye , Jinbo Huang , Heping Dai , Dianbo Fu , Daoshen Chen
Abstract: A method comprises generating a first ramp signal and a second ramp signal for controlling a buck converter portion and a boost converter portion of a buck-boost converter respectively, comparing the first ramp signal and the second ramp signal to a control signal, controlling the buck converter portion using the comparing the first ramp signal to the control signal and the boost converter portion using the comparing the second ramp signal to the control signal, comparing a current flowing through the inductor to a current threshold and terminating a switching cycle based upon the comparing the current flowing through the inductor to the current threshold.
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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
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.
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Patent Agency Ranking
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.
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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
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.
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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
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.
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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
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.
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公开(公告)号：US20180069490A1
公开(公告)日：2018-03-08
申请号：US15795506
申请日：2017-10-27
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: A system comprises a first inverter switch and a second inverter switch connected in series between a positive dc bus and a negative dc bus, a freewheeling apparatus connected between a common node of the first inverter switch and the second inverter switch, and ground, a first soft switching network coupled between the positive dc bus and the common node of the first inverter switch and the second inverter switch, wherein the first soft switching network is configured such that the first inverter switch is of a first zero voltage transition and a second soft switching network coupled between the negative dc bus and the common node of the first inverter switch and the second inverter switch, wherein the second soft switching network is configured such that the second inverter switch is of a second zero voltage transition.
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