Complex power

     Complex power       

                                    factor has been studied and  formalized for a very 

                                   long time just to fined the total effect of Parallel loads. 

                                    It is very important in power analysis because it 

                                    contains all the  information pertaining to the 

                                     power absorbed by a given load. 

S = 1/2 VI*   or    S= Vrms Irms

 and

S= Vrms Irms  ∠θv - θi

                                         But complex power maybe expressed in terms of the load impedance Z so we may write

                                       
Example 

                                          complex power contains all the relevant 
                                          power  information in a given load.

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I’ve learned that complex power is very conceptual and essential to understand.

I’ve learned that Complex numbers can help us in acquiring all loads. And these are, resistor absorbs the real power and dissipates in the form of heat and light. Inductor absorbs the reactive power and dissipates in the form of magnetic field. Capacitor absorbs the reactive power and dissipates in the form of electric or electrostatic filed. Using complex power we can easily determine if it is inductive, capacitive or it is resistive loads. For expressing the complex power we have to first consider a single phase network whose voltage and current can be represented in complex form.