公开(公告)号：US20240388196A1

公开(公告)日：2024-11-21

申请号：US18655977

申请日：2024-05-06

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yang Yan

IPC: H02M1/32 ,  H02M1/00 ,  H02M3/04 ,  H02M7/44 ,  H05K7/20

Abstract: A power converter includes a plurality of direct current terminals, a plurality of temperature detection units, a plurality of direct current/direct current (DC/DC) conversion circuits, at least one direct current/alternating current (DC/AC) conversion circuit, and a controller. The temperature detection unit is configured to detect a temperature of the direct current terminal. When a highest temperature value in temperatures of the plurality of direct current terminals is greater than a first alarm threshold, a current value of an input current of at least one DC/DC conversion circuit is controlled to decrease. If the highest temperature value decreases to be less than or equal to a first safety threshold after the current value of the input current of the at least one DC/DC conversion circuit is decreased, a signal indicating that the direct current terminal corresponding to the at least one DC/DC conversion circuit is abnormal is output.

公开(公告)号：US20250167540A1

公开(公告)日：2025-05-22

申请号：US19023153

申请日：2025-01-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yang Yan ,  Luo Li ,  Weiping Liu ,  Gun Yang

IPC: H02H7/20 ,  H02J3/38 ,  H02M1/00 ,  H02M1/32 ,  H02S40/30

Abstract: A photovoltaic inverter system includes a lightning protection apparatus, a plurality of DC/DC conversion circuits, and an inverter circuit. Each DC/DC conversion circuit is connected to a component. The plurality of DC/DC conversion circuits are connected in parallel and then connected to the inverter circuit. The lightning protection apparatus includes a gas lightning protection unit and a first lightning protection unit. The gas lightning protection unit is separately connected to a first terminal of the component and a first terminal of another component. The first lightning protection unit is connected between the first terminal of the component and a grounding terminal. The gas lightning protection unit is configured to transmit, to the first lightning protection unit, a first current, namely a current introduced by any terminal of the another component. The first lightning protection unit is configured to transmit the first current and/or a second current to the grounding terminal.

公开(公告)号：US20250096698A1

公开(公告)日：2025-03-20

申请号：US18892057

申请日：2024-09-20

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Gun Yang ,  Weijia Yan ,  Yang Yan ,  Weiping Song

IPC: H02M7/00 ,  H02J15/00 ,  H02M1/32

Abstract: An inverter includes a chassis, which has a cavity that accommodates a plurality of power devices and a partition and blocking assembly. The partition and blocking assembly divides the cavity of the chassis into two installation cavities, and the plurality of power devices are disposed in the two installation cavities. The chassis includes a first side wall and a second side wall that are adjacent to each other. An air inlet of a fan of the partition and blocking assembly communicates with one installation cavity, an air outlet of the fan communicates with the other installation cavity, and a direction from the air inlet to the air outlet faces away from the first side wall. A gap exists between the partition and blocking assembly and the second side wall, or the partition and blocking assembly is provided with a through hole.