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公开(公告)号：US20150256104A1
公开(公告)日：2015-09-10
申请号：US14199749
申请日：2014-03-06
Applicant: FutureWei Technologies, Inc.
Inventor： Dianbo Fu
IPC: H02M7/537
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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公开(公告)号：US20150131329A1
公开(公告)日：2015-05-14
申请号：US14077406
申请日：2013-11-12
Applicant: FutureWei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Liming Ye , Dianbo Fu
IPC: H02M3/335
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: An apparatus comprises a bridge coupled between a bias voltage and ground, wherein the bridge comprises a first switch and a second switch connected in series and coupled between the bias voltage and ground and a third switch and a fourth switch connected in series and coupled between the bias voltage and ground, a resonant device coupled to the bridge, wherein the resonant device comprises a fixed capacitance, a gate capacitance and a magnetizing inductance, a transformer coupled to the resonant device, wherein the transformer comprises a primary winding and a plurality of secondary windings.
Abstract translation: 一种装置包括耦合在偏置电压和接地之间的桥，其中桥包括串联连接并耦合在偏置电压和地之间的第一开关和第二开关，以及串联耦合在第三开关和第四开关之间的第三开关和第四开关， 偏置电压和接地，耦合到桥的谐振装置，其中所述谐振装置包括固定电容，栅极电容和磁化电感，耦合到所述谐振装置的变压器，其中所述变压器包括初级绕组和多个次级绕组 绕组。
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公开(公告)号：US20140152413A1
公开(公告)日：2014-06-05
申请号：US13705287
申请日：2012-12-05
Applicant: FUTUREWEI TECHNOLOGIES, INC.
Inventor： Dianbo Fu , Yunfeng Liu , Yanshen Hu
CPC classification number: H01F27/38 , H02M7/49 , H02M7/493 , H02M2007/4822
Abstract: An embodiment apparatus comprises a magnetic core comprising a first side and a second side opposite the first side, a first winding comprising a first portion wound around the first side and a second portion wound around the second side, a second winding comprising a third portion wound around the first side and a fourth portion wound around the second side, wherein the second portion and the fourth portion are coupled to each other.
Abstract translation: 实施例装置包括磁芯，该磁芯包括第一侧和与第一侧相对的第二侧，第一绕组，包括围绕第一侧缠绕的第一部分和绕第二侧缠绕的第二部分，第二绕组，包括缠绕的第三部分 围绕第一侧和围绕第二侧缠绕的第四部分，其中第二部分和第四部分彼此连接。
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公开(公告)号：US20200295570A1
公开(公告)日：2020-09-17
申请号：US16889520
申请日：2020-06-01
Applicant: Futurewei Technologies, Inc.
Inventor： Xiaolin Mao , Heping Dai , Dianbo Fu , Huibin Zhu
Abstract: System, device and method for exporting power are provided including at least one AC optimizer with plurality of DC inputs each connecting with respective one of plurality of DC sources, and independent maximum power point tracking (MPPT) performed for each respective DC source to extract power from each DC source for output and coupling to AC grid. When multiple AC optimizers are employed, with each AC optimizer having multiple DC inputs, each DC input can be connected to PV module with independent MPPT function. Since, each AC optimizer can serve multiple PV modules, significant cost saving and efficiencies can be achieved. Optionally, on PV sub-module level, each of the multiple DC inputs can be used as an independent MPPT channel for a PV sub-module cell string.
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公开(公告)号：US10566908B2
公开(公告)日：2020-02-18
申请号：US16277080
申请日：2019-02-15
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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Patent Agency Ranking
公开(公告)号：US10536002B2
公开(公告)日：2020-01-14
申请号：US15594231
申请日：2017-05-12
Applicant: Futurewei Technologies, Inc.
Inventor： Xiaolin Mao , Heping Dai , Huibin Zhu , Dianbo Fu
Abstract: A direct current (DC) bus voltage from a combined output of a plurality of DC power modules is controlled based on an alternating current (AC) voltage of a power grid. The DC bus voltage tracks the AC grid voltage to provide efficient conversion between the DC power sources and the AC grid, even when the amplitude of the AC grid voltage varies. In one example, a variable reference voltage is generated based on a detected AC grid voltage. The reference voltage increases and decreases in proportion to increases and decreases in the AC grid voltage. In this manner, large differences between the bus voltage and the grid voltage are avoided. By closely tracking the two voltages, efficiency in the modulation index for power conversion can be achieved.
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公开(公告)号：US20190386580A1
公开(公告)日：2019-12-19
申请号：US16557324
申请日：2019-08-30
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Yunfeng Liu
Abstract: A system includes a first inverter connected between a de power source and an input terminal of a first leg of a coupled inductor, a second inverter connected between the de power source and an input terminal of a second leg of the coupled inductor, a third inverter connected between the de power source and an input terminal of a third leg of the coupled inductor, and an output filter connected between the coupled inductor and an ac power source, wherein output terminals of the first leg, the second leg and the third leg of the coupled inductor are connected together and further connected to the output filter.
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公开(公告)号：US10411591B2
公开(公告)日：2019-09-10
申请号：US15451254
申请日：2017-03-06
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Hengchun Mao , Bing Cai
Abstract: An embodiment holdup time circuit of a bridgeless power factor correction circuit comprises a charge device connected between an output terminal of a bridgeless power factor correction circuit and an energy storage apparatus, a discharge device connected between the energy storage apparatus and an input of the bridgeless power factor correction circuit, the energy storage apparatus and the bridgeless power factor correction circuit comprising a first boost converter, a second boost converter, a first switch and a second switch, wherein the first switch is connected between the first boost converter and ground and the second switch is connected between the second boost converter and ground.
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公开(公告)号：US20190252988A1
公开(公告)日：2019-08-15
申请号：US16277080
申请日：2019-02-15
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：US10284097B2
公开(公告)日：2019-05-07
申请号：US16173904
申请日：2018-10-29
Applicant: Futurewei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
Abstract: A system comprises an input power stage coupled to a primary side of a transformer, an output power stage coupled to a secondary side of a transformer, a first common node capacitor and a common node resistor connected in series between a midpoint of the secondary side of the transformer and ground and a detector having an input connected to a common node of the first common node capacitor and the common node resistor, and an output connected to a control circuit, wherein the control circuit is configured to dynamically adjust a switching frequency of the system based upon an output of the detector.
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