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公开(公告)号：US11984819B2
公开(公告)日：2024-05-14
申请号：US17495117
申请日：2021-10-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhaohui Wang , Lei Shi , Dong Chen
IPC: H02J3/38 , H02M1/12 , H02M1/14 , H02M7/5387
CPC classification number: H02M7/53871 , H02J3/381 , H02M1/123 , H02M1/14 , H02J2300/24
Abstract: A power conversion circuit includes a switching network, a control circuit, a filter circuit, and a direct current side circuit; and the filter circuit includes a first power inductor, a common mode choke, a first differential mode filter capacitor, a first common mode filter capacitor, and a second common mode filter capacitor. The first power inductor includes a first winding and a second winding, and the common mode choke includes a third winding and a fourth winding; a first end of the first winding and a first end of the second winding are separately connected to the switching network, a second end of the first winding and a second end of the second winding are respectively connected to a first end of the third winding and a first end of the fourth winding.
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公开(公告)号：US11811217B2
公开(公告)日：2023-11-07
申请号：US17584102
申请日：2022-01-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: A photovoltaic power generation system includes a capacitor bridge arm, an inverter bridge arm, and the fault protection apparatus. The capacitor bridge arm includes a positive electrode output port, a negative electrode output port, and a reference output port The inverter bridge arm includes a positive electrode input port, a negative electrode input port, and a reference input port. The positive electrode input port is connected to the positive electrode output port. The negative electrode input port is connected to the negative electrode output port. The reference input port is connected to the reference output port by using the fault protection apparatus. The fault protection apparatus is turned off based on a magnitude value or a variation of a voltage, or a magnitude value or a variation of a current between the reference input port and the positive electrode input port or the negative electrode input port.
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公开(公告)号：US11695335B2
公开(公告)日：2023-07-04
申请号：US17188859
申请日：2021-03-01
Applicant: Huawei Digital Power Technologies Co., Ltd.
CPC classification number: H02M3/155 , H02M3/07 , H02M3/158 , H03K17/122 , H03K17/127 , H03K17/74 , H02M1/0051 , H02M1/0058 , H02M1/088 , H03K2017/307 , H03K2217/0036
Abstract: A method comprises configuring a power converter to operate as a boost converter, the power converter comprising a low side switch and a high side switch, during a first dead time after turning off the low side switch and before turning on the high side switch, configuring the power converter such that a current of the power converter flows through a high speed diode, and after turning on the high side switch, configuring the power converter such that the current of the power converter flows through a low forward voltage drop diode.
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公开(公告)号：US20230170792A1
公开(公告)日：2023-06-01
申请号：US18162524
申请日：2023-01-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yongbing Gao , Dong Chen , Lei Shi
IPC: H02M1/36 , H02M7/5387 , H02M1/44
CPC classification number: H02M1/36 , H02M7/5387 , H02M1/44 , H02J3/00
Abstract: Embodiments of this application provide a power conversion circuit, a power transmission system, and a photovoltaic device. The power conversion circuit includes: a first bridge arm, where the first bridge arm includes a first upper bridge arm and a first lower bridge arm; the first upper bridge arm includes a switching component connected between an input positive end and an output end; the first lower bridge arm includes a switching component connected between the output end and an input negative end; each of the switching components includes a switching transistor and a first diode anti-parallel connected to the switching transistor.
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公开(公告)号：US20240063754A1
公开(公告)日：2024-02-22
申请号：US18496226
申请日：2023-10-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhen Cao , Dong Chen , Xiaofeng Yao , Jiebin Cheng , Guilei Gu
Abstract: This application provides a power converter box used in a photovoltaic system. The power converter box includes at least two power converters, and the at least two power converters include one primary power converter and at least one secondary power converter. The primary power converter obtains status information of a photovoltaic substring corresponding to a secondary power converter, and sends, to an inverter by using a PLC communication module in the primary power converter, the status information of the photovoltaic substring corresponding to the secondary power converter and status information of a photovoltaic substring corresponding to the primary power converter. The primary power converter further receives, by using the PLC communication module in the primary power converter, control information sent by the inverter, controls, based on the control information, an output power of the photovoltaic substring corresponding to the primary power converter.
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Patent Agency Ranking
公开(公告)号：US20230115497A1
公开(公告)日：2023-04-13
申请号：US17964128
申请日：2022-10-12
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dong Chen , Zhen Cao , Xiaofeng Yao , Jiebin Cheng , Guilei Gu
IPC: H02J3/38 , H02M1/32 , H02M1/36 , H02M3/158 , H03K17/082
Abstract: A power converter analog chip includes a sampling circuit configured to collect electrical parameters of the power converter; a maximum power point tracking circuit configured to perform maximum power point tracking based on the input power or the output power obtained by the electrical parameters, and to obtain an adjustment signal; a rapid shutdown circuit configured to, when receiving a rapid shutdown instruction sent from the outside of the analog chip, generate a rapid shutdown signal; a protection circuit, configured to, when an electrical parameter of the power converter exceeds a first preset threshold, generate a protection signal and send the protection signal to the multiplexer; and a multiplexer configured to select one of the rapid shutdown signal, the protection signal, or the adjustment signal as a control signal, to control a power component in the power converter.
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公开(公告)号：US12249905B2
公开(公告)日：2025-03-11
申请号：US18174855
申请日：2023-02-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhen Cao , Dong Chen , Xiaofeng Yao
Abstract: A serial-parallel converter protection system includes a controller, a drive, a first switching transistor, and a second switching transistor. An input terminal of a converter is connected to an output terminal of the converter through the first switching transistor. The output terminal of the converter is connected in parallel with the second switching transistor. When an output voltage of the converter is greater than a first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on. In some embodiments, when the output voltage of the converter is greater than the first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on, so that the converter is bypassed, thereby preventing a voltage and a current from impacting a component inside the converter.
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公开(公告)号：US20240096729A1
公开(公告)日：2024-03-21
申请号：US18468174
申请日：2023-09-15
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dong Chen , Fenglong Lu , Yunyu Tang , Lei Shi , Yunfeng Liu , Shuyi Lv , Pengcheng Zhang
IPC: H01L23/367 , H01L23/13 , H01L23/373
CPC classification number: H01L23/367 , H01L23/13 , H01L23/3735 , H01L23/3736 , H01L23/3121
Abstract: A packaged device includes a circuit board, an electronic component, and a heat storage portion. The electronic component is electrically coupled to the circuit board; and the heat storage portion is disposed on the circuit board or embedded in the circuit board, and the heat storage portion is adjacent to the electronic component, where a specific heat capacity of the heat storage portion is higher than a specific heat capacity of the circuit board, and the heat storage portion is configured to store and release heat. A heat storage material with a relatively high specific heat capacity is introduced into the packaged device, and the heat storage portion is disposed on the circuit board around the electronic component where a large amount of heat generated by the electronic component in a short time can be quickly stored in the heat storage portion and then released to the outside.
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公开(公告)号：US11606019B2
公开(公告)日：2023-03-14
申请号：US17495112
申请日：2021-10-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dong Chen , Lei Shi , Zhaohui Wang
Abstract: A control circuit includes a detection module configured to detect an operating condition of a semiconductor switching device; a determining module configured to determine a gate allowable voltage of the semiconductor switching device based on the operating condition; and an output module configured to output a control signal to a driving power supply circuit of the semiconductor switching device based on the gate allowable voltage, to control the driving power supply circuit to provide a gate on voltage that is not higher than the gate allowable voltage and that is positively correlated with the gate allowable voltage for the semiconductor switching device. When the operating condition of the semiconductor switching device becomes better, the gate allowable voltage of the semiconductor switching device is increased.
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公开(公告)号：US11870346B2
公开(公告)日：2024-01-09
申请号：US17548963
申请日：2021-12-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dong Chen , Lei Shi , Zhaohui Wang
Abstract: A DC-DC converter includes: a first capacitor, a second capacitor, a first switch device, a second switch device, a third switch device, a fourth switch device, a flying capacitor, where one end of the flying capacitor is coupled to the first intermediate node, the other end of the flying capacitor is coupled the second intermediate node; and the protective circuit, including a clamping unit and a buffering unit, where when a voltage between the positive end of the bus and the negative end of the bus increases, the clamping unit clamps the first switch device to a voltage of the first capacitor, and clamps the fourth switch device to a voltage of the second capacitor, and the buffering unit reduces a current flowing through the clamping unit and the flying capacitor.
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