AC Power Calculator

What is an AC Power Calculator?

An AC Power Calculator is a tool that helps compute various power-related parameters in alternating current (AC) circuits. It calculates real power, apparent power, reactive power, power factor, and phase angle based on input values of voltage, current, and power factor.

Key Formulas

The main formulas used in AC power calculations are:

• Apparent Power (S): S = V × I
• Real Power (P): P = S × PF
• Reactive Power (Q): Q = √(S² - P²)
• Power Factor (PF): PF = P / S
• Phase Angle (θ): θ = arccos(PF)

Where:

• V is voltage in volts (V)
• I is current in amperes (A)
• S is apparent power in volt-amperes (VA)
• P is real power in watts (W)
• Q is reactive power in volt-amperes reactive (VAR)
• PF is power factor (dimensionless)
• θ is phase angle in degrees (°)

The Power Triangle

The power triangle is a visual representation of the relationship between apparent power (S), real power (P), and reactive power (Q) in AC circuits: