Huawei Digital Power Technologies Co., Ltd.

Mingming Pu

Jian Li

Zonghao Yang

Maoping Jia

A power supply system is described. The power supply system can include an active power contactor, a standby power contactor, an auxiliary power contactor, a control switch, and a controller. The active power contactor is connected in series in a path of a main power supply circuit, and the standby power contactor is connected in series in a path of a standby power supply circuit. The active power contactor and the standby power contactor are interlocked through the auxiliary power contactor. The auxiliary power contactor and the control switch are connected in series. The controller is configured to when the main power supply circuit is abnormal, control the control switch to change a status of the auxiliary power contactor, to switch to the standby power supply circuit, or control the control switch to change the status of the auxiliary power contactor, to switch to the main power supply circuit.

Power supply system and control method

This application provides a cooling system, including a heat exchanger, a cooling supplement component, a bypass vent valve, and a controller. The heat exchanger includes an air intake vent A and an air exhaust vent B that are used for outdoor fresh air entry and discharge, and an air intake vent C and an air exhaust vent D that are used for indoor return air entry and discharge. The cooling supplement component includes a condenser and an evaporator, the condenser is connected to the air exhaust vent B by using an exhaust air pipe, and the evaporator is connected to the air exhaust vent D. The bypass vent valve is disposed on the exhaust air pipe, and the bypass vent valve communicates with outdoor air. The bypass vent valve is connected to the controller, and the controller is configured to control the bypass vent valve.

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Xi'an, China

Mingming Pu