公开(公告)号：US11804795B2

公开(公告)日：2023-10-31

申请号：US17495754

申请日：2021-10-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xuejuan Kong ,  Lixia Zou ,  Ying Liu

IPC: H02P27/04 ,  H02P23/18 ,  H03M1/46

CPC classification number: H02P23/18 ,  H02P27/04 ,  H03M1/462

Abstract: This application relates to a motor controller applied to an electric vehicle, a microprocessor in the motor controller, and a sampling trigger method applied to the microprocessor. The sampling trigger method includes: a signal generation module generates an exciting fundamental wave signal to drive the resolver to work; a signal processing module determines an exciting symbol based on the exciting fundamental wave signal, where the exciting symbol includes alternate high-level signals and low-level signals, and the signal processing module further determines a zero crossing point signal of the exciting fundamental wave signal based on the exciting symbol; and a phase shift processing module performs phase shift processing on the zero crossing point signal to obtain a sampling trigger signal, to trigger the microprocessor to sample the resolver feedback signal. In this solution, fewer peripheral circuits of a chip are used, thereby improving a product integration degree.

公开(公告)号：US10803004B2

公开(公告)日：2020-10-13

申请号：US16445607

申请日：2019-06-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Deng ,  Xuejuan Kong ,  Zhou Shu

IPC: G06F13/42 ,  H04L12/10 ,  H04L12/40

Abstract: A modular UPS system includes at least two power devices, a controlling device, and a serial bus. The power device is configured to receive control status information transmitted by the controlling device. The power device is configured to transmit a status signal data frame to the serial bus according to the control status information when determining that a current period is a first preset period, where the status signal data frame includes an identifier field, the identifier field includes a status signal data area, and the status signal data area is used to store a data value of a status signal. The serial bus is configured to receive status signal data frames transmitted by the at least two power devices, and transmit status signal data frames with a same value in status signal data areas to the controlling device in parallel.

公开(公告)号：US20190303341A1

公开(公告)日：2019-10-03

申请号：US16445607

申请日：2019-06-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Deng ,  Xuejuan Kong ,  Zhou Shu

IPC: G06F13/42 ,  H04L12/40 ,  H04L12/10

Abstract: A modular UPS system includes at least two power devices, a controlling device, and a serial bus. The power device is configured to receive control status information transmitted by the controlling device. The power device is configured to transmit a status signal data frame to the serial bus according to the control status information when determining that a current period is a first preset period, where the status signal data frame includes an identifier field, the identifier field includes a status signal data area, and the status signal data area is used to store a data value of a status signal. The serial bus is configured to receive status signal data frames transmitted by the at least two power devices, and transmit status signal data frames with a same value in status signal data areas to the controlling device in parallel.