Power-saving uninterrupted power supply system

An electric system and power-saving technology, which is applied in the field of power-saving uninterruptible power system, can solve problems such as the inability to provide load AC power, and achieve the effect of improving the overall conversion power

Inactive Publication Date: 2011-08-24
CYBER POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the bidirectional AC converter (71) does not use a transformer, the volume of the online interactive uninterruptible power supply system can be miniaturized and the power conversion efficiency can be improved, but it is relatively unable to provide a relatively stable AC power supply

Method used

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Embodiment Construction

[0030] The technical means adopted by the present invention to achieve the intended creation purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

[0031] See first figure 1 , the power-saving uninterruptible power supply system of the present invention includes:

[0032] Two power supply coupling terminals (L) (N), for connection with two electrodes of an external AC power supply;

[0033] A transformer (10), which includes a primary side (11) and a secondary side (12), one end of the primary side (11) is connected to one of the power coupling terminals (L) through a power switch (50), and the other One end is connected to another power coupling terminal (N); and the power switch (50) can be a relay, a MOS transistor or other electronic components used as a switch;

[0034] A first switch (51), which is connected in series between the external AC power supply and the power switch (50), and includes a commo...

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PUM

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Abstract

The invention provides a power-saving uninterrupted power supply system, comprising a first switch, a second switch, a transformer, a voltage stabilizer, a charging and current converter, a normal mode judging unit and a power switch, wherein when an alternating current power supply is stable, the first switch and the second switch are synchronously switched and conducted so that the alternating current power supply is used for directly supplying power to a load end, and simultaneously, the power switch is in a non-conductive state; and the voltage stabilizer and the transformer are not connected with the entity of the alternating current power supply. Therefore, when the alternating current power supply is stable, the voltage stabilizer and the transformer do not consume redundant power supply and the integrated conversion power of the uninterrupted power system provided by the invention can be effectively increased.

Description

technical field [0001] The invention relates to an uninterruptible power system, especially a power-saving uninterruptible power system. Background technique [0002] Generally speaking, uninterruptible power systems can be divided into three types, one is online, the other is offline, and the third is online interactive. Please refer to figure 2 As shown, an improved online uninterruptible power system (60) includes: [0003] A rectifier (61), which is connected to an external AC power supply, rectifies the AC power supply into a DC power supply and then outputs it; [0004] a converter (62), which is connected to the output terminal of the rectifier (61), and whose output terminal is connected to the load terminal (65); [0005] a charger (63), which is connected to the external AC power source through a first switch (SW1); [0006] a battery (631), connected to the charger (63), and connected to the inverter (62) through a second switch (SW2); [0007] A control sign...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/02
CPCY02B70/30Y04S20/20
Inventor 何濓洵叶修廷谢宏明
Owner CYBER POWER SYST
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