Active backup power supply with power factor correction and output voltage regulation
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United States of America Patent
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Jun 1, 2004
Grant Date -
Feb 5, 2004
app pub date -
Aug 5, 2002
filing date -
Jul 30, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An active backup power supply with PFC and power output regulation comprises a power factor correction (PFC) circuit, a backup battery, an inverter and a control circuit. The said PFC circuit outputs current drawn as low THD (total harmonic distortion) and non-pulsating current from municipal power source. The said inverter connects to the PFC circuit and the backup battery at one end and outputs a precisely regulated power source at the other end. The said controller is to control the voltage relation between the PFC circuit and the inverter, so the PFC circuit is controlled in voltage boost mode to draw non-pulsating current from municipal power. With the above-mentioned components, the present invention enables an output power with PFC and voltage regulation to the load device (FIG. 3).
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