Table of Contents
AC Power Calculator
Enter 2 magnitudes + 2 phase angles to get the other values and press the Calculate button:
AC Power Calculator Calculation
The voltage V in volts (V) is eqaul to the current I in amps (A) times the impedance Z in ohms (Ω):
V(V) = I(A) × Z(Ω) = (|I|×|Z|) ∠ (θI + θZ)
The complex power S in volt-amps (VA) is equal to the voltage V in volts (V) times the current I in amps (A):
S(VA) = V(V) × I(A) = (|V|×|I|) ∠ (θV – θI)
The real power P in watts (W) is equal to the voltage V in volts (V) times current I in amps (A) times the power factor (cos φ):
P(W) = V(V) × I(A) × cos φ
The reactive power Q in volt-amps reactive (VAR) is equal to the voltage V in volts (V) times the current I in amps (A) time the sine of the complex power phase angle (φ):
Q(VAR) = V(V) × I(A) × sin φ
The power factor (FP) is equal to the absolute value of the cosine of the complex power phase angle (φ):
PF = |cos φ|