Apparatus for controlling power factor compensation in...

Details Apparatus for controlling power factor compensation in... Apparatus for controlling power factor compensation in...

2006-05-23

2006-05-23

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Power factor control of armature or line circuit

C318S508000, C318S509000, C318S510000, C318S512000, C318S729000, C323S205000, C323S212000

Reexamination Certificate

active

07049774

ABSTRACT:
The present invention provides an apparatus for controlling power factor compensation and method thereof, in which a turn-on timing point of a power factor compensation switch is delayed by a prescribed time from a zero crossing timing point to enhance a power factor. The present invention includes periodically detecting a zero crossing time point of an inputted voltage, turning on the power factor compensation switch if a turn-on time point of the power factor compensation switch set to a time point delayed by a prescribed time from the detected zero crossing time of the inputted voltage is reached, and turning off the power factor compensation switch if a prescribed time passes after turning on the power factor compensation switch.

REFERENCES:
patent: 6181583 (2001-01-01), Okui et al.
patent: 6489742 (2002-12-01), Lumsden
patent: 6856119 (2005-02-01), Crawford

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