Uninterruptible power system
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United States of America Patent
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app pub date -
Mar 29, 2016
filing date -
Dec 11, 2014
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Abstract
An uninterruptible power system is provided. When a first power supply of the system is faulty, in a process in which a switch unit switches power supply from the first power supply to a second power supply, the second power supply discharges to a direct current bus using a bidirectional power converter, electric energy stored in the direct current bus is also discharged in a short time in a process of the switch, and the direct current bus outputs both a discharging current of the second power supply and a discharging current of the direct current bus to a system output end, which ensures that the direct current bus outputs a stable voltage in a gap period of an action of the switch unit.
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