High-voltage direct-current power supply system

A power supply system, high-voltage direct current technology, applied in the field of power supply, can solve the problems such as the inability to use the online charging and discharging function of the battery, the energy loss of the rectifier module, and the reduction of system efficiency, and achieve simple and practical periodic discharge testing, improve reliability, and low cost input Effect

Active Publication Date: 2014-01-01
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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Problems solved by technology

[0005] 1) The high-voltage DC system is usually in the online mode, and the rectifier module will generate energy loss, resulting in a decrease in the overall efficiency of the system;
[0006] 2) The capacity configuration of the rectifier module is usually the maximum load of the load and the capacity required for battery pack charging, so multiple rectifier modules need to be installed, and the investment cost is high;
[0007] 3) Currently, the online charging and discharging function of the battery cannot be used in offline mode

Method used

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents coming within the spirit and scope of the appended claims.

[0025] In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" a...

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Abstract

The invention provides a novel off-line type high-voltage direct-current power supply system structure used in a data center. The novel system structure is characterized in that electric direct supply and a high-voltage direct-current complete-off-line mode are used in novel structure IT equipment, efficiency is higher than that of a traditional high-voltage direct-current on-line mode; a standby rectifier cubice is added to a load direct-current bus and is shared by subsystems, system reliability is greatly improved with low investment; using of a rectifier module is lowered through the off-line mode, system efficiency is improved, investment cost is lowered; a storage battery pack is connected with a load through a diode, the advantages of natural follow current and biasing reversal cut-off of the diode are used, manual switch control is of no need, and automatic separation of a power supply set and the standby rectifier cubice can be achieved. In general, the novel power supply structure has the advantages of being practical, high in reliability, efficient and low in investment.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a high-voltage direct current power supply system. Background technique [0002] In existing data centers, UPS (Uninterruptible Power System, uninterruptible power supply) is usually used as the main power supply equipment, but this equipment has disadvantages such as low conversion efficiency, large input current harmonics, low reliability, and high cost. In this context, HVDC (High-Voltage Direct Current, high-voltage direct current transmission) technology has entered people's field of vision and gradually matured. [0003] At present, the mainstream power supply voltage of domestic HVDC transmission technology is 240V. The structure of this power supply technology is to use the output of the rectifier and the output of the battery to connect to the same DC bus, and realize the power supply to the load and the battery pack through the DC power supply control system. ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/34
Inventor 张企宇朱永忠李孝众王俊平
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD
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