Friday, July 24, 2020

Active Power and Reactive Power

Active Power and Reactive Power

Let us consider a single phase power circuit in which current lags behind the voltage by an angle φ.

Let the instantaneous electric potential difference v = Vm.sinωt

Then the instantaneous current can be expressed as i = Im. sin(ωt - φ).

Where, Vm and Im are the maximum values of sinusoidally varying electric potential difference and current respectively.

The instantaneous power of the circuit is given by



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