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31.发明申请公开(公告)号：US20180316258A1
公开(公告)日：2018-11-01
申请号：US15498163
申请日：2017-04-26
Applicant: Futurewei Technologies, Inc.
Abstract: An apparatus and associated method are provided involving a converter circuit. The converter circuit comprises an inductor including a first terminal configured to be coupled to a power source, and a second terminal. Also included is a pair of serially-coupled transistors coupled to the second terminal of the inductor. The pair of serially-coupled transistors have a transistor intermediate node therebetween. Further included is a pair of serially-coupled diodes coupled to the second terminal of the inductor. The pair of serially-coupled diodes have a diode intermediate node therebetween. A first capacitator is coupled in parallel with the serially-coupled transistors and the serially-coupled diodes. Further, the converter circuit includes a sub-circuit having a second capacitor serially-coupled with an auxiliary transistor. The sub-circuit is coupled between the transistor intermediate node and the diode intermediate node.
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公开(公告)号：US10116219B2
公开(公告)日：2018-10-30
申请号：US15263121
申请日：2016-09-12
Applicant: Futurewei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
Abstract: A method comprises connecting a first resonant converter and a second resonant converter in parallel, detecting a first signal indicating a first soft switching process of the first resonant converter and a second signal indicating a second soft switching process of the second resonant converter and adjusting a first switching frequency of the first resonant converter by a first control circuit and a second switching frequency of the second resonant converter by a second control circuit until a load current flowing through the first resonant converter is substantially equal to a load current flowing through the second resonant converter.
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公开(公告)号：US20180309300A1
公开(公告)日：2018-10-25
申请号：US15493796
申请日：2017-04-21
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Xiaolin Mao , Dianbo Fu , Huibin Zhu
Abstract: A method comprises operating a plurality of power optimizers connected in series between two input terminals of an inverter, wherein the plurality of power optimizers are connected to a plurality of solar panels to form a plurality of power modules connected in series, measuring operation parameters of the plurality of the solar panels, calculating a maximum power flow of each solar panel based upon the measuring, determining a mode transition range based upon the maximum power flows of the plurality of solar panels and configuring a first power optimizer to operate in a pass-through mode if a maximum power point tracking (MPPT) current of a first solar panel connected to the first power optimizer is within the mode transition range.
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公开(公告)号：US20180234022A1
公开(公告)日：2018-08-16
申请号：US15954424
申请日：2018-04-16
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：US20180212534A1
公开(公告)日：2018-07-26
申请号：US15924853
申请日：2018-03-19
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Yunfeng Liu
CPC classification number: H02M7/537 , H02M7/487 , H02M7/49 , H02M2007/4815 , Y02B70/1441
Abstract: A system comprises a plurality of inverter units having inputs connected to a power source and a coupled inductor comprising a plurality of windings and coupled between the plurality of inverter units and an output filter, wherein each winding of the plurality of windings has a first terminal connected to an output of a corresponding inverter unit and second terminals of the plurality of windings are connected together.
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Patent Agency Ranking
公开(公告)号：US20180183347A1
公开(公告)日：2018-06-28
申请号：US15635705
申请日：2017-06-28
Applicant: Futurewei Technologies, Inc.
Inventor： Liming Ye , Heping Dai , Dianbo Fu
CPC classification number: H02M3/33592 , H02M1/08 , H02M3/335 , H02M2001/0074 , H02M2001/0093 , Y02B70/1433 , Y02B70/1475
Abstract: An Input-Series-Output-Parallel (ISOP)-type partial power converter circuit comprises: an isolated, unregulated DC-to-DC converter configured to generate a first output voltage at a first output voltage node; and a regulated DC-to-DC converter coupled with the unregulated DC-to-DC converter and configured to generate a second output voltage at a second output voltage node, the regulated DC-to-DC converter comprising a resonant forward-flyback converter configuration; wherein the first output voltage node is coupled in parallel with the second output voltage node.
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公开(公告)号：US09998018B2
公开(公告)日：2018-06-12
申请号：US15289345
申请日：2016-10-10
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Wensong Yu , Hengchun Mao , Heping Dai
CPC classification number: H02M3/33546 , H02M1/14 , H02M3/33576 , H02M3/3376 , H02M7/487 , H02M2007/4815 , Y02B70/1433 , Y02B70/1441
Abstract: A multilevel LLC resonant converter comprises a first capacitor and a second capacitor connected in series providing a mid-voltage point of an input dc power source, a resonant tank connected in series with a primary side of a transformer, a first transistor and a second transistor connected in series, wherein a common node of the first transistor and the second transistor is connected to the mid-voltage point through a first isolation switch and a third transistor and a fourth transistor connected in series, wherein a common node of the third transistor and the fourth transistor is connected to the mid-voltage point through a second isolation switch.
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公开(公告)号：US20180102713A1
公开(公告)日：2018-04-12
申请号：US15838745
申请日：2017-12-12
Applicant: Futurewei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Liming Ye , Dianbo Fu
CPC classification number: H02M3/33546 , H02M1/08 , H02M1/088 , H02M1/14 , H02M1/36 , H02M3/3353 , H02M3/33553 , H02M3/33576 , H02M3/33592 , H02M3/3385 , H02M7/4807 , H02M2001/0006 , H02M2001/0058 , H02M2007/4818 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491 , Y02P80/112
Abstract: A device comprises a gate drive bridge coupled between a bias voltage of a power converter and ground and a transformer connected to the gate drive bridge, wherein the transformer comprises a primary winding connected to two legs of the gate drive bridge respectively and a plurality of secondary windings configured to generate gate drive signals for low side switches, high side switches and secondary switches of the power converter.
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公开(公告)号：US20180076628A1
公开(公告)日：2018-03-15
申请号：US15795794
申请日：2017-10-27
Applicant: Futurewei Technologies, Inc.
Abstract: A system comprises a five-level rectifier configured to be connected with an ac power source, wherein the five-level rectifier comprises a first boost apparatus and a first buck apparatus configured to operate in a first half cycle of the ac power source, and a second boost apparatus and a second buck apparatus configured to operate in a second half cycle of the ac power source and a five-level inverter connected to the five-level rectifier.
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公开(公告)号：US09806529B2
公开(公告)日：2017-10-31
申请号：US15222170
申请日：2016-07-28
Applicant: Futurewei Technologies, Inc.
Abstract: An inverter comprises a first boost apparatus having an input coupled to a positive dc bus, a second boost apparatus having an input coupled to a negative dc bus, a first switch coupled to an input of an L-C filter and the first boost apparatus, a second switch coupled to the input of the L-C filter and the second boost apparatus, a third switch coupled between the positive dc bus and the first switch, wherein a common node of the first switch and the third switch is directly connected to an output of the first boost apparatus, a fourth switch coupled between the negative dc bus and the second switch, wherein a common node of the fourth switch and the second switch is directly connected to an output of the second boost apparatus and an isolation switch coupled between the input of the L-C filter and ground.
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