Power-saving line interactive uninterruptible power system
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United States of America Patent
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Nov 20, 2012
Grant Date -
Apr 28, 2011
app pub date -
Oct 22, 2009
filing date -
Aug 28, 2009
priority date (Note) -
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Abstract
A power-saving line interactive UPS has a power switch set, a low-frequency transformer, a full-bridge circuit, a main controller, a charge and discharge mode controller, a rechargeable battery and a high-frequency charging circuit. The high-frequency circuit is connected between an AC power input terminal and the rechargeable battery to convert the AC power into a DC power and charge the rechargeable battery. Therefore, when the AC power is normally supplied and the power capacity of the rechargeable battery is not full, the high-frequency charging circuit is activated to charge the rechargeable battery without charging the rechargeable battery through the low-frequency transformer and the full-bridge switching circuit, thereby effectively reducing overall power consumption.
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