Huawei Technologies Co., Limited

Huawei Digital Power Technologies Co., Ltd.

Kelei Liu

Tao Zhang

Xiaofei Zhang

Zhen Qin

Zhuyong Huang

Peiguo Liu

Yihang Lv

Bifei Yang

Fuzhou Wang

Junlin Li

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 overcurrent protection system includes an inductor current detection circuit configured to detect an inductor current in the inverter circuit to obtain an inductor current detection value, a pulse-by-pulse current limit enable signal generation circuit connected to the inductor current detection circuit and to the pulse-by-pulse current limit enable signal generation circuit, and configured to perform turn-off control on a switching transistor in the inverter circuit according to the pulse-by-pulse current limit enable signal, and a first instant-feeding load impact signal generation circuit connected to the pulse-by-pulse current limit enable signal generation circuit and configured to detect an inductor voltage in the inverter circuit to obtain an inductor voltage detection value, and generate an instant-feeding load impact signal in response to determining that the inductor voltage detection value reaches a preset voltage threshold.

Overcurrent protection system and method for inverter circuit

The present disclosure discloses a current limiting control method for a diode neutral-point-clamped three-level inverter and a related circuit. When a current in switching tubes is lowered to a value not greater than a first preset current value, the current limiting control method for a diode neutral-point-clamped three-level inverter and the related circuit drive an inside switching tube of the switching tubes to be turned on; after a first delay time, drive another inside switching tube to be turned on; after a second delay time, control an inside switching tube to be turned off and the other inside switching tube to be normally turned on; and control all the switching tubes to be turned on or off according to a control time sequence of the diode neutral-point-clamped three-level inverter circuit.

Current limiting control method for diode neutral-point-clamped three-level inverter and related circuit

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Shenzhen, China

Kelei Liu