High-voltage direct current power supply system

Abstract

The invention provides a novel high-voltage direct current power supply system structure applied to a data center. The novel system structure is characterized in that a high-voltage direct current on-line mode and a high-voltage direct current off-line mode are combined, the power receiving compatibility of IT equipment is fully considered, the compatible structure is flexible, and more practical significance is achieved; the check discharge test function of a storage battery in the on-line mode is optimized, detection precision is improved, and meanwhile damage to the storage battery due to large-capacity discharging is reduced; a storage battery testing bus is added to the system, and the problem of the periodic inspection of the storage battery in the high-voltage direct current off-line mode is simply solved; a bidirectional transducer is used, and the charging and discharging control of the storage battery is more flexible; the using of a rectifier module is reduced in the off-line mode, system efficiency is improved, and input cost at an earlier stage is lowered.

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 HVDC transmission technology is 240V. The architecture 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. Charge a...

AI Technical Summary

Problems solved by technology

[0006] 1) The capacity configuration of the rectifier module is usually the maximum load of the load and the capacity required for charging the battery pack, so multiple rectifier modules need to be installed, and the production cost is high;

[0007] 2) There is power loss in the rectifier module, resulting in low overall efficiency of the system;

[0008] 3) The output power of the battery pack is uncontrollable, resulting in the possibility of large-capacity discharge of the battery pack, which affects the life of the battery pack;

[0009] 4) Since the battery pack will carry out regular capacity inspections, that is, the system will integrate the power of the battery to complete the verification of the power capacity. Therefore, the battery pack has shortcomings such as insufficient control accuracy and deviation from battery pack maintenance standards during check discharge. ;

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