Patent ID: 9577534
Date: 2017-02-21
CPC Classifications: F24F,H02M,Y02B

Claim:
1. A power converter comprising: a rectifier configured to rectify an input alternate current from an AC power source; a power factor corrector including a reactor and a switching device which switches between accumulation and discharge of energy, based on an input voltage output from the rectifier, in and out of the reactor, and configured to be capable of performing a power factor correction operation by boosting the input voltage; an input voltage detector configured to periodically detect the input voltage; an output voltage detector configured to periodically detect an output voltage from the power factor corrector; a power converter connected to an output of the power factor corrector, and configured to generate output AC power; and a controller configured to control the power factor correction operation by the power factor corrector, wherein the controller is configured to: a detection period whereby the input voltage detector periodically detects the input voltage is longer than a detection period whereby the output voltage detector periodically detects the output voltage from the power factor corrector, such that the instantaneous voltage drop or the instantaneous power failure causes a smaller drop in the result of detection by the input voltage detector than the result of detection by the output voltage detector.