Microcontroller Based Power Factor Correction Using IC L6561

Priya S. Devkar

Abstract: Proposed system presents an efficient AC/DC converter with power factor correction by using IC L6561. The Microcontroller 89s52 used to generate triggering pulses for semi converter based on firing angle control mechanism. Semi converter gives controlled DC output with variable voltage range. IC l6561 based on borderline control techniques used for power factor correction. The objective of proposed system is to give reliable power control over the output of AC to Dc converter and improve the power factor. The major application of this system is for domestic purposes and also can be used in industry purpose.

Keywords: Firing angle control, Optoisolator, Semi converter, ZCD, ICL6561, PFC