UPS module and UPS system

A technology of diodes and switching tubes, applied in the field of UPS modules and UPS systems, can solve the problems of large space, high cost, and low work efficiency, and achieve the effects of improving efficiency, saving costs, saving space and costs

Active Publication Date: 2013-07-03
VERTIV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a UPS module with small cost, small space and high work efficiency in view of the above-mentioned UPS modules in the prior art with high cost, large space and low work efficiency

Method used

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  • UPS module and UPS system

Examples

Experimental program
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Embodiment Construction

[0027] Such as figure 2 As shown, in the logic structure diagram of Embodiment 1 of the UPS module of the present invention, the UPS module includes a PFC rectification unit 100 , an inverter unit 200 and a DC / DC conversion unit 300 . The DC / DC conversion unit 300 includes a BUCK-BOOST circuit 301 .

[0028]When the AC mains power is normal, the AC mains power (LINE) is rectified by the PFC rectifier unit 100 to obtain a DC voltage, and the inverter unit 200 inverts the DC voltage into an AC voltage to supply power to the load (not shown) and through the charger (not shown) to charge the battery pack. When the AC power is abnormal, the DC / DC conversion unit 300 charges the positive bus through the PFC rectification unit 100 , and charges the negative bus through the BUCK-BOOST circuit 301 . Implementing this technical solution, when the AC mains is normal or abnormal, the PFC rectification unit is shared, so the PFC rectification unit 100 and the DC / DC conversion unit 300 h...

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Abstract

The invention discloses a UPS (Uninterrupted Power Supply) module and a UPS system. The UPS module comprises a PFC (Power Factor Correction) rectification unit and an inversion unit that are sequentially connected, wherein the PFC rectification unit is used for charging a positive busbar and a negative busbar when an alternating current mains supply is normal; the UPS module further comprises a DC / DC (direct current / direct current) conversion unit; the DC / DC conversion unit comprises a BUCK-BOOST circuit; and when the alternating current mains supply is abnormal, the DC / DC conversion unit charges the positive busbar through the PFC rectification unit, and the negative busbar through the BUCK-BOOST circuit. With the implementation of the technical scheme, when the alternating current mains supply is normal or abnormal, an upper bridge arm of the PFC rectification unit is shared, so that the UPS module is not required to adopt an isolation boosting transformer when using a battery pack, the space and cost are saved, the miniaturization trend of a switch power supply is followed, and the loss is reduced. In addition, since the DC / DC conversion unit and the PFC rectification unit are provided with a coupling circuit, a part of devices of the PFC rectification unit are utilized, the cost is saved, and the efficiency is improved.

Description

technical field [0001] The invention relates to power electronic technology, in particular to a UPS module and a UPS system. Background technique [0002] UPS (Uninterruptible Power Supply, uninterruptible power supply) is widely used in many industries such as electric power, telecommunications, finance, government, manufacturing, etc. It can guarantee to continue working for a period of time after a power outage, so that users will not affect their work or lose data due to power outages. It can also eliminate "power pollution" such as power surges on the mains, momentary high voltage, momentary low voltage, wire noise and frequency deviation. [0003] At present, in the design of small and medium power UPS systems, in order to solve the problem of sharing battery packs when multiple UPS modules are connected in parallel, such as figure 1 As shown, the traditional method is to design the DC / DC conversion unit 300 as an isolated boost circuit, for example, using figure 1 A...

Claims

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Application Information

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IPC IPC(8): H02J9/00H02J7/02
Inventor 沈宝山陈宗辉
Owner VERTIV CORP
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