Power Factor Correction

Theory and Formula

Power Factor Correction (PFC) helps improve energy efficiency by reducing reactive power in an electrical system. It's typically achieved by installing capacitors that offset the lagging reactive power caused by inductive loads.

This calculator uses the following formula to calculate the required reactive power (kVAR):

Required kVAR = kW × [tan(cos⁻¹(initial PF)) - tan(cos⁻¹(target PF))]
          

Where:

• kW is the real power
• PF is the power factor (initial and desired)
• cos⁻¹ is the arccosine function, converting PF to its phase angle