blob: 45fcb640e231fd67ac8c1a06b1e675731c0e3145 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
//Book - Power System: Analysis & Design 5th Edition
//Authors - J. Duncan Glover, Mulukutla S. Sarma, and Thomas J. Overbye
//Chapter - 2 ; Example 2.5
//Scilab Version - 6.0.0 ; OS - Windows
clc;
clear;
Pim=400; //Real Power of induction motor in kW
pfim=0.8; //Power factor of the induction motor
Ssm=150; //Apparent power of the synchronous motor in kVA
pfsm=0.9; //Power factor of the synchronous motor
Vline=4160; //RMS line voltage of AC supply in Volts
Sim=Pim/pfim; //Apparent power of the induction motor in kVA
Qim=sqrt(Sim*Sim-Pim*Pim); //Reactive power absorbed by the induction motor in kVAR
Psm=Ssm*pfsm; //Real power absorbed by the synchronous motor in kW
Qsm=sqrt(Ssm*Ssm-Psm*Psm); //Reactive power delivered by the synchronous motor in kVAR
P=Pim+Psm; //Total real power of the combined load in kW
Q=Qim-Qsm; //Total reactive power absorbed by the combined load in kVAR
S=sqrt(P*P+Q*Q); //Total apparent power absorbed by the combined load in kVA
pf=P/S; //Power factor of the combined load
Iline=S*1000/(sqrt(3)*Vline); //Line current of the combined load in Amperes
XCdel=3*Vline*Vline/(Q*1000); //Capacitive reactance at each leg for unity power factor in Ohm
Iupf=P*1000/(sqrt(3)*Vline); //Line current at unity poiwer factor
printf('\nThe power factor of the combined motor load is %f',pf);
printf('\nThe magnitude of line current delivered by the source is %f Amperes',Iline);
printf('\nThe magnitude of capacitive reactance at each leg for unity power factor is %f Ohm',XCdel);
printf('\nThe magnitude of the line current delivered by the source with capacitor bank installed is %f Amperes',Iupf);
|
