Automatic Power Factor Correction Using Arduino

Abstract: In today's technological revolution, power is very valuable. Low power factor results in increased energy consumption, voltage drops, decreased power system efficiency, and shortened equipment lifespan. Identifying the causes of power loss and improving power system stability is crucial. The rise in inductive loads has decreased power system efficiency. Therefore, a simple and effective method for improving power factor is needed. An automatic power factor correction device precisely determines the delay between the line voltage and line current by measuring the time difference between the arrival of the current and voltage signals from the AC mains. This time value is then calibrated to calculate the phase angle and corresponding power factor using an internal timer. The microcontroller (Arduino) then calculates the power factor and switches on different capacitor banks accordingly. This automatic power factor correction method can be applied in industries, power systems, and even households to improve stability and system efficiency. Power factor correction plays a significant role in enhancing the efficiency and reliability of electrical power systems.