公开(公告)号：US20250023460A1

公开(公告)日：2025-01-16

申请号：US18902523

申请日：2024-09-30

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Xiaolu HU ,  Zezhou YANG ,  Liqiong YI ,  Shaoxian CHEN

IPC: H02M1/42 ,  H02H7/125 ,  H02M1/00

Abstract: A power control circuit includes an alternating current power supply module, a power module, and a controller. The power module includes a bridgeless power factor correction circuit. A sampling apparatus in the alternating current power supply module samples a current signal output by an alternating current power supply or the power module, and outputs an obtained sampled signal to the controller. The controller controls on and off of a switch element in the alternating current power supply module based on the received sampled signal, and the controller switches off the switch element when the sampled signal includes a lightning surge signal. In addition, the controller is further configured to perform current metering on the sampled signal.

公开(公告)号：US20230154671A1

公开(公告)日：2023-05-18

申请号：US18150995

申请日：2023-01-06

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zezhou YANG ,  Liqiong YI ,  Shu ZHONG ,  Baoguo CHEN ,  Xiaolu HU

IPC: H01F27/30 ,  H01F27/28 ,  H01F3/14 ,  H02M1/00 ,  H02M3/335

CPC classification number: H01F27/306 ,  H01F27/2804 ,  H01F3/14 ,  H02M1/0064 ,  H02M3/33569 ,  H01F2038/006

Abstract: A matrix transformer, a power converter, and a matrix transformer winding arrangement method. Each of the magnetic core columns of n sub-transformers of the matrix transformer is wound with a first winding and a second winding, first windings are used to form a high-voltage-side winding of the matrix transformer, and second windings are used to form a low-voltage-side winding of the matrix transformer. A ratio of a turn quantity design value of the high-voltage-side winding to the quantity n of the sub-transformers is not an integer.