PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB

284 Practical MATLAB® Applications for Engineers

PowerWaveAna = (45/2)cos(15pi/180)
PowerWaveANA =
21.7333
% results are printed for
comparisons
fprintf(‘Average Power, Numerical:%f\n’,PowerWave)
Average Power, Numerical: 21.733331
fprintf(‘Average Power, Analytical:%f\n’,PowerWaveANA)
Average Power, Analitical: 21.7333
fprintf(‘VRMS, Numerical:%f\n’,VRMS)
VRMS, Numerical: 6.3640
fprintf(‘VRMS, Analytical:%f\n’,VRMSANA)
VRMS, Analytical: 6.3630
fprintf(‘IRMS, Numerical:%f\n’,IRMS)
IRMS, Numerical: 3.5355
fprintf (‘IRMS, Analytical:%f\n’,IRMANA)
IRMS, Analytical: 3.5350
fprintf (‘PowerFactor, PF:%f\n’,PF)
PowerFactor,PF: 0.965926
Observe that the analytical results fully agree with the numerical results.

0 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.01

− 10

0

10

20

30

40

50

time in seconds

Amplitudes of P, I, & V

Instantaneous Power, Current, and Voltage

i(t)

v(t)

p(t)

FIGURE 3.64
Plots of i(t), v(t), and p(t) of Example 3.10.