Power, reactive and apparent power and power factor calculations

Explanation of the power calculator programs for Ti84 :ONEPHASE.8XP

definitions

The calculation of power, power factor, reactive power and current is a very important subject in Electrical Engineering.

4 Different inputs in this Ti program are possible.

Definitions according to electrical network theory.

Formulas : Pc=U.I *= complex power, I*= conjugate, definition conjugate: (a+bi)*=(a-bi)

abs(Pc)=apparent power (Va)=Pa,

Re(Pc)= real power (Watt)=Ptrue,

Im(Pc)=reactive power (Var)= Pr

cos(ϕ) or power factor (pf)= (real power)/(apparent power)=Ptrue/Pa

Different input possibilties for the power analysis program

All unknown parameters of the circuit power analysis are calculated

Download the program

onephase.zip

Explanation of the Power Calculator Programs for the Ti84 : program P1PHASE.8xp

This program calculates real power, apparent power, cosfi, etc. for different input options of the current. The examples show the options. The difference between positive and negative blind power is accentuated.

Example of system with negative reactive power

Input current complex as well in amplitude and phase angle for an inductive and capacitve system

Download the program.

P1phase.zip