公开(公告)号：US20230391218A1

公开(公告)日：2023-12-07

申请号：US18168529

申请日：2023-02-13

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yanzhong Zhang ,  Xiaofeng Yao ,  Haibin Hu

IPC: B60L53/51 ,  H02J7/35 ,  H02J7/00 ,  H02J3/38

CPC classification number: B60L53/51 ,  H02J7/35 ,  H02J7/00712 ,  H02J3/38 ,  H02J2207/20 ,  H02J2300/24 ,  B60L2210/40 ,  B60L2210/14

Abstract: This application provides a charging module and a charging system. The charging system includes a charging module. The charging module includes a direct current-to-direct current (DC/DC) charging component, a functional interface, an inverter, and a control and guide component. The functional interface includes a photovoltaic interface. The DC/DC charging component is configured to receive a first power exported by a photovoltaic module to charge an electric vehicle (EV). In this way, after receiving, through the photovoltaic interface, electrical energy converted from solar energy, the charging module does not need to cooperate with an on-board charger (OBC), but uses the DC/DC charging component to charge the EV with a direct current. The charging module provided in this application is not limited by a charging power of the OBC when charging the EV, thereby increasing an actual power for charging the EV and a charging speed.

公开(公告)号：US11837868B2

公开(公告)日：2023-12-05

申请号：US17704120

申请日：2022-03-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaoqian Meng ,  Haibin Guo ,  Yongbing Gao

IPC: H02J3/38 ,  H02S40/32 ,  H02M7/537

CPC classification number: H02J3/381 ,  H02M7/537 ,  H02S40/32 ,  H02J2207/20 ,  H02J2300/24

Abstract: A photovoltaic system and a leakage current control method for the photovoltaic system includes at least one photovoltaic module group, at least one photovoltaic inverter, a grounded metal frame, and a sampling control unit. The photovoltaic module group is mounted on the grounded metal frame. An output end of the photovoltaic module group is connected to an input end of the photovoltaic inverter, and an output end of the photovoltaic inverter is connected to a power grid. The sampling control unit is coupled to both the photovoltaic module group and the photovoltaic inverter and is configured to detect a current value of a leakage current formed by a common-mode voltage of the photovoltaic inverter on a parasitic capacitor. Herein, the parasitic capacitor exists between the photovoltaic module group and the grounded metal frame.

公开(公告)号：US20230378758A1

公开(公告)日：2023-11-23

申请号：US18366102

申请日：2023-08-07

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Huan ZHAO

IPC: H02J3/38

CPC classification number: H02J3/38 ,  H02J2300/24

Abstract: A control system and method for a power supply system. The control system includes a front controller and a front voltage conversion circuit and a post controller and a post voltage conversion circuit. The front voltage conversion apparatus is configured to supply power to the post voltage conversion apparatus through a direct current bus. The post voltage conversion apparatus is configured to: receive electric energy transmitted by the front voltage conversion apparatus through the direct current bus, and supply power to a power grid. The post controller is further configured to transmit, to the front controller through the direct current bus, information indicating that high voltage ride-through occurs on the power grid. Voltage control on the direct current bus does not need to depend on the high-speed communication cable, thereby improving control efficiency of a power supply system.

公开(公告)号：US11824496B2

公开(公告)日：2023-11-21

申请号：US17651812

申请日：2022-02-21

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Heping Dai ,  Xiaolin Mao ,  Dianbo Fu ,  Huibin Zhu

IPC: H02S50/10 ,  H02J3/38 ,  H02J3/46 ,  H02S50/00

CPC classification number: H02S50/10 ,  H02J3/38 ,  H02J3/381 ,  H02J3/388 ,  H02J3/46 ,  H02S50/00 ,  H02J2300/26

Abstract: A system includes a plurality of power modules connected in series between two input terminals of an inverter, a plurality of local controllers coupled to their respective power modules, wherein a first local controller of the plurality of local controllers is coupled to a first power module comprising a first solar panel, a first capacitor and a first power optimizer, and wherein the first local controller is configured to enable the first power optimizer to switch among a buck mode, a boost mode and a pass-through mode based upon a maximum power point tracking (MPPT) current of the first solar panel, and a central controller coupled to the inverter, wherein the central controller is configured to regulate an input voltage of the inverter.

公开(公告)号：US20230369979A1

公开(公告)日：2023-11-16

申请号：US18361016

申请日：2023-07-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaoqiu Li

IPC: H02M3/158 ,  H02M1/08 ,  B60L53/22

CPC classification number: H02M3/1582 ,  H02M1/083 ,  B60L53/22 ,  B60L2210/10

Abstract: A conversion circuit includes a buck-boost unit and a switched capacitor unit. The buck-boost unit may perform buck conversion or boost conversion on a received first input voltage, use a first input voltage obtained after the buck conversion or boost conversion as a forward voltage, and provide the forward voltage for the switched capacitor unit. The switched capacitor unit may perform boost conversion on the forward voltage, and output a forward voltage obtained after the boost conversion as a first output voltage. The conversion circuit may support continuous adjustment of a transformation ratio, and a maximum transformation ratio of the conversion circuit is not limited by a transformation ratio of the switched capacitor unit. The first output voltage of the conversion circuit may be any voltage not less than the first input voltage.

公开(公告)号：US20230366953A1

公开(公告)日：2023-11-16

申请号：US18356406

申请日：2023-07-21

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhiwu XU ,  Haibin GUO ,  Lin LI

IPC: G01R31/55 ,  H02M1/00 ,  H02M7/48 ,  H02M7/12

CPC classification number: G01R31/55 ,  H02M1/007 ,  H02M7/48 ,  H02M7/12

Abstract: A detection method and a related apparatus. Whether a first converter and a second converter are connected to a same combiner device is determined by determining an output port voltage signal of the first converter and an output port voltage signal of the second converter, so that first information or second information is generated and notified to staff. Generally, if a first converter and a second converter in a combiner system are not connected to a same combiner device, it may be considered as that a wire connection of the first converter or the second converter is incorrect. In the detection method and the related apparatus, whether there is a wiring error in the combiner system of the converters can be quickly and accurately determined in an application scenario in which voltage information at a combiner point cannot be obtained.

公开(公告)号：US20230366572A1

公开(公告)日：2023-11-16

申请号：US18360417

申请日：2023-07-27

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Xiaoli DUAN ,  Bo WEI ,  Qiang JING

IPC: F24F8/90 ,  F24F8/108

CPC classification number: F24F8/90 ,  F24F8/108 ,  B01D46/70

Abstract: This application discloses a filtering system, an air conditioning system that includes the filtering system, and a cleaning method for a filtering system. An example filtering system includes a total liquid inlet, a total liquid outlet, a first Y-shaped strainer, and a second Y-shaped strainer. The first Y-shaped strainer includes a first liquid flow port, a second liquid flow port, and a first drainage port. The first liquid flow port is connected to the total liquid inlet by using a first pipeline, the second liquid flow port is connected to the total liquid outlet by using a second pipeline, and the first drainage port is connected to a first waste liquid area by using a third pipeline. The second Y-shaped strainer includes a third liquid flow port, a fourth liquid flow port, and a second drainage port, the third liquid flow port is connected to the total liquid inlet by using a fourth pipeline.

公开(公告)号：US11813942B2

公开(公告)日：2023-11-14

申请号：US17574475

申请日：2022-01-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shuaijie Wang ,  Yuan Zhou ,  Bucheng Ji

IPC: H02P6/14 ,  B60L15/08 ,  B60L50/60 ,  B60L50/40 ,  H02M1/00 ,  B60L3/00 ,  H02M3/158 ,  H02P27/08

CPC classification number: B60L15/08 ,  B60L3/0092 ,  B60L50/40 ,  B60L50/66 ,  H02M1/008 ,  H02M3/1582 ,  H02P27/08 ,  B60L2210/12

Abstract: A motor control system and a vehicle reliably perform a three-phase active short circuit on a motor when a single-point power source fails. The motor control system includes a bus capacitor and a motor. The motor is connected to a positive direct current bus and a negative direct current bus through three phases of inverter bridges, the positive direct current bus and the negative direct current bus are respectively connected to a positive terminal and a negative terminal of the bus capacitor, and each phase of inverter bridge includes an upper bridge arm connected to the positive direct current bus and a lower bridge arm connected to the negative direct current bus. In addition, the motor control system further includes: an upper gate drive circuit, a lower gate drive circuit, a first power supply unit, and a second power supply unit.

公开(公告)号：US20230361671A1

公开(公告)日：2023-11-09

申请号：US18351004

申请日：2023-07-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shuyu OU ,  Muhammad YAQOOB ,  Qingzu HONG ,  Wenbo SUN ,  Grover Victor TORRICO-BASCOPÉ

IPC: H02M1/08 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M1/083 ,  H02M3/33576 ,  H02M1/0058 ,  H02M3/33515

Abstract: A control method for a hybrid three-port DC-DC power converter combining a dual active bridge converter and a dual active bridge series resonant converter topology. The controller includes a first control loop to regulate power flow between the first port and the second port and a second control loop to regulate power flow between the second port and the third port. The first control loop employs a three-mode control methodology to regulate power flow through the dual active bridge converter between the first port and the second port. The second control loop is configured with a lower bandwidth than the first control loop and regulates power flow through the dual active bridge series resonant converter between the second port and the third port.

公开(公告)号：US11811315B2

公开(公告)日：2023-11-07

申请号：US17350191

申请日：2021-06-17

Applicant: Huawei Digital Power Technologies, Co., Ltd.

Inventor： Yongbing Gao ,  Jun Wang ,  Lei Shi

IPC: H02M3/155 ,  H02H7/12 ,  H02M1/44 ,  H02M7/537 ,  H04B1/40

CPC classification number: H02M3/155 ,  H02H7/1213 ,  H02M1/44 ,  H02M7/537 ,  H04B1/40

Abstract: A direct current (DC)/DC conversion circuit includes an input end, a power circuit, and an output end, a bypass circuit that is a unidirectional conduction circuit, and a switch disposed between the input end and the power circuit, where the input end is configured to be coupled to an external power supply to receive power to the DC/DC conversion circuit. The bypass circuit is coupled between the input end and the power circuit, the bypass circuit is disposed between the switch and the power circuit, and the bypass circuit is coupled to the power circuit in parallel. The switch is configured to be closed when the input end is reversely coupled to the external power supply to enable a current from a positive electrode of the external power supply to flow back to a negative electrode of the external power supply through the bypass circuit and the switch.