Huawei Digital Power Technologies Co., Ltd.

Huawei Technologies Co., Limited

Voltronic Power Technology Corporation

Peiguo Liu

Bo Wang

Xiaofei Zhang

Zhuyong Huang

Yuan Liu

Juor-Ming Hsieh

Zhen Qin

Peng Shuai

Kelei Liu

Yang Cheng

Mita Cai

Zhenfu Fei

Yanan Zhou

Yanfei Huang

Bifei Yang

Dangen Nie

Peng Shi

A power supply and distribution system for a data center. The power supply and distribution system for a data center includes a plurality of SST power supply systems. Each of the plurality of SST power supply systems includes a rectifier module that performs voltage reduction and rectification by using an SST and an energy storage apparatus connected to the rectifier module. The plurality of SST power supply systems are in a one-to-one correspondence with a plurality of cabinet units, and each of the plurality of cabinet units is configured to deploy an SST power supply system corresponding to the cabinet unit. The rectifier module in each of the plurality of SST power supply systems receives electric energy through a medium-voltage bus.

Power supply and distribution system for data center

A cooling capacity distribution unit includes a liquid-cooled circulating pump disposed in a cabinet, and a frequency converter that supplies power to the liquid-cooled circulating pump. The frequency converter includes an AC-DC module and a DC-AC module. The AC-DC module is configured to be connected to mains, and the DC-AC module is connected to the liquid-cooled circulating pump. The cooling capacity distribution unit further includes a power supply unit, where the power supply unit includes a backup battery disposed in the cabinet, and a DC-DC module connected to the backup battery. The DC-DC module is connected to the DC-AC module and is configured to supply power to the liquid-cooled circulating pump.

Cooling capacity distribution unit and liquid cooling system

Embodiments of this application provide a power conversion circuit. The power conversion circuit includes at least one first power conversion unit connected in series to a first phase line, at least one second power conversion unit connected in series to a second phase line, at least one third power conversion unit connected in series to a third phase line, a plurality of first start circuits connected in series to the first phase line, and a plurality of second start circuits connected in series to the second phase line. Each first start circuit includes a first relay and a first resistor that are connected in parallel, and first relays in all the first start circuits are sequentially closed after the power conversion circuit is powered on, to start the power conversion circuit. Each second start circuit includes a second relay and a second resistor that are connected in parallel.

Power conversion circuit, method for controlling power conversion circuit, and transformer

An uninterruptible power supplying method and an uninterruptible power supply. The method includes switching an uninterruptible power supply to a bypass working mode from a main loop working mode, so as to provide mains power for a load through a bypass; determining the working mode of the uninterruptible power supply; and when the uninterruptible power supply is in the bypass working mode, adjusting a working frequency of at least one switch tube in a main loop of the uninterruptible power supply to a second frequency from a first frequency, where the second frequency is less than the first frequency, so as to reduce power loss when the uninterruptible power supply is in the bypass working mode.

Uninterruptible power supplying method and uninterruptible power supply

An uninterruptable power supply (UPS) and a direct current-direct current (DC-DC) converter. An input end of the DC-DC converter is connected to a BUS+, a BUS&#x2212;, and an N wire, and a load in the DC-DC converter is connected to a switch tube through an inductor rather than being directly connected to the switch tube.

Uninterruptible power supply and DC-DC converter

Disclosed is an uninterrupted power supply apparatus, comprising a rectifying unit outputs a positive half-cycle of voltage potential and a negative half-cycle of voltage potential; a backup battery outputs a backup voltage; a first boost unit receives the positive half-cycle of voltage potential or the backup voltage and outputs a first voltage; a second boost unit receives the negative half-cycle of voltage potential or the backup voltage and outputs a second voltage; a current shunt unit receives the first voltage and the second voltage and outputs an AC output voltage; a charge circuit, coupled to the rectifying unit, the backup battery, and the first and/or the second boost unit, for being capable of controlling the first and/or the second boost unit to either store a charging power or charge the backup battery by applying the stored charging power alternatively and successively.

Uninterrupted power supply apparatus

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Shenzhen, China

Peiguo Liu