Power factor correction converter with parallel-connected converter sections
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United States of America Patent
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Feb 19, 2013
Grant Date -
May 17, 2012
app pub date -
Feb 24, 2010
filing date -
Jun 10, 2009
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Abstract
When a commercial power supply E operates normally, converter sections PFC1, PFC2 connected in parallel to each other can operate to approximate the input current from the commercial power supply E to the waveform and phase of the input voltage to correct a power factor while supplying stabilized output voltages Vo1, Vo2 to a load. When the voltage of the commercial power supply E drops, the smoothing capacitor Co1 operates as an input power supply to power the converter section PFC2, which allows the smoothing capacitor Co2 to supply the stabilized output voltage Vo2 to the load.
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