Huawei Technologies Co., Limited

Huawei Digital Power Technologies Co., Ltd.

Huawei Cloud Computing Technologies Co., Ltd.

Vertiv Tech Co., Ltd.

Chunyang Liu

Feng Liu

Qi Wang

Yanzhong Zhang

Zheng Ma

Ningbo Feng

Yang Cheng

Tong Ni

Kaixuan Nie

Qiangqiang Liu

Wei Huang

Miao Song

A payment method includes a cloud application instance sending an order and a device identity to a payment management node. The payment method further includes the payment management node recording a correspondence between the order and the device identity. The payment method further includes the cloud application instance sending an order payment request to a terminal device. The payment method further includes the terminal device sending, to the payment management node based on the order payment request, an order obtaining request carrying the device identity. The payment method further includes the payment management node obtaining the order from the correspondence based on the device identity carried in the order obtaining request, and sending the order to the terminal device. The payment method further includes terminal device receiving and processing the order.

Payment method and system based on cloud application instance, and related device

This application provides a motor drive system, a power system, and an electric vehicle, and relates to the field of power electronic technologies. The drive system is configured to drive a motor that uses a power battery pack as a power supply. The power battery pack includes at least two battery modules that are independent of each other, the drive system includes at least two direct current-alternating current DC-AC circuits, and the battery modules one-to-one correspond to the DC-AC circuits. Each battery module is correspondingly connected to an input end of one DC-AC circuit, and an output end of each DC-AC circuit is connected to a corresponding winding of the motor. The DC-AC circuit is configured to convert a direct current provided by the corresponding battery module into an alternating current to drive the corresponding winding of the motor.

Motor drive system, power system, and electric vehicle

A device for controlling a motor is provided. A type of a power component in a first drive circuit of the device is different from a type of a power component in a second drive circuit of the device. A loss of the power component in the first drive circuit is greater than a loss of the power component in the second drive circuit. When determining that a load of the motor is less than a preset load, a controller of the device controls the first drive circuit to stop working and controls the second drive circuit to start to work. When determining that the load of the motor is greater than or equal to the preset load, the controller controls both the first drive circuit and the second drive circuit to start to work.

Motor control unit and power system

A related power conversion circuit includes a three-level switch circuit and a resonant circuit, and a control method of the related power conversion circuit includes: controlling all transistors in the three-level switch circuit to be turned off, where a body diode connected in parallel to a transistor S, a body diode connected in parallel to a transistor Q, and a body diode connected in parallel to a transistor Qare all turned on based on a current freewheeling function of the resonant circuit; controlling the Sto be turned on, to set up a first working state of the power conversion circuit; and after the first working state lasts for a time length T, controlling the Qand the Qto be turned on.

Control method of power conversion circuit, and related power conversion circuit

Growing community of inventors

Xi'an, China

Chunyang Liu