Complex Power Block

Compute real, reactive, apparent, power factor and phase angle (deg) of a voltage-current pair at fundamental Frequency based on the following equations.
Real Power = mean(V*I)
Reactive Power = Apparent Power*sin(Phase Angle)
Apparent Power = Vrms*Irms
Power Factor = Real Power/Apparent Power
Phase Angle = acos(Power Factor)
For the first cycle of simulation, the outputs are held constant to the powers computed for the Voltage initial input and Current initial input parameters.