Electric Machinery Fundamentals Power & Energy 4 pptx
Electric Machinery Fundamentals Power & Energy_4 pptx
... base3
0.901 48 0 V 43 2 VVVV== =
The power supplied to the load is
()()
2
2
Load,pu Load
0 .47 65 1.513 0. 344 PIR== =
()( )
Load Load,pu base
0. 344 1000 kVA 344 kWPPS== =
The power supplied ...
()( )
,pu
sin 1 0 .40 9 sin 6.0 0. 042 8
G
QVI
θ
== °=
()( )
,pu
1 0 .40 9 0 .40 9
G
SVI== =
()( )
,pu base
0 .40 7 1000 kVA 40 7 kW
GG
PPS== =
()( )
,pu base
0. 042...
Electric Machinery Fundamentals Power & Energy_12 pptx
... (['Vt = ' num2str(Vt(ii)) ' V']);
disp (['If = ' num2str(i_f(ii)) ' A']);
% Plot the curves
figure(1);
plot(i_f,Ea,'b-','LineWidth',2.0); ...
current');
axis ([0 5 0 150]);
set(gca,'YTick',[0 10 20 30 40 50 60 70 80 90 100 110 120 130 140
150]')
set(gca,'XTick',[0 0.5 1.0 1.5 2.0 2.5 3.0 3.5...
Electric Machinery Fundamentals Power & Energy_13 pptx
...
disp (['Ea = ' num2str(Ea(ii)) ' V']);
disp (['Vt = ' num2str(Vt(ii)) ' V']);
disp (['If = ' num2str(i_f(ii)) ' A']);
disp (['If_a ...
figure(1)
plot(nm,t_ind,'Color','b','LineWidth',2.0);
xlabel('\itn_{m} \rm(r/min)');
ylabel('\tau_{ind} \rm(N-m)');
title ('Single...
Electric Machinery Fundamentals Power & Energy_2 potx
...
plot(amps,abs(VS(1,:)/1000),'b-','LineWidth',2.0);
hold on;
plot(amps,abs(VS(2,:)/1000),'k ','LineWidth',2.0);
plot(amps,abs(VS(3,:)/1000),'r ','LineWidth',2.0); ...
title ('\bfSecondary Voltage Versus Load');
xlabel ('\bfLoad (A)');
ylabel ('\bfSecondary Voltage (kV)');
legend('0.8 PF laggi...
Electric Machinery Fundamentals Power & Energy_3 docx
...
plot(amps,VR(1,:),'b-','LineWidth',2.0);
hold on;
plot(amps,VR(2,:),'k ','LineWidth',2.0);
plot(amps,VR(3,:),'r ','LineWidth',2.0);
title ('\bfVoltage ...
plot(amps,abs(VSP(3,:)),'r ','LineWidth',2.0);
title ('\bfSecondary Voltage Versus Load');
xlabel ('\bfLoad (A)');
ylabel (&ap...
Electric Machinery Fundamentals Power & Energy_5 docx
...
plot(t,vx,'b','Linewidth',1.0);
hold on;
plot(t,vy,'k ','Linewidth',1.0);
title('\bfReference Voltages for fr = 500 Hz');
xlabel('\bfTime (s)'); ...
plot(t,vb,'r:','Linewidth',2.0);
plot(t,vc,'k ','Linewidth',2.0);
title('\bfPhase Voltages');
xlabel('\bfTime (s)');...
Electric Machinery Fundamentals Power & Energy_6 doc
...
plot(I,abs(VT_lag),'b-','LineWidth',2.0);
hold on;
plot(I,abs(VT_unity),'k ','LineWidth',2.0);
plot(I,abs(VT_lead),'r ','LineWidth',2.0);
title ('\bfTerminal ...
plot(Pload,PB,'k ','LineWidth',2.0);
plot(Pload,PC,'r ','LineWidth',2.0);
plot([0 10],[3 3],'k','LineWidt...
Electric Machinery Fundamentals Power & Energy_8 ppt
...
plot(If,abs(Ia_nl),'k-','Linewidth',2.0);
hold on;
plot(If,abs(Ia_half),'b ','Linewidth',2.0);
plot(If,abs(Ia_full),'r:','Linewidth',2.0); ... conditions is
43 0 13.5 44 0 0 V
34. 2 16.5 A
0.22 3.0
A
A
AS
RjX j
φ
−
∠°−∠°
== =∠°
++
EV
I
The real power supplied by this machine is
()( )( )
3 cos 3 44 0 V 34. 2 A cos 16...
Electric Machinery Fundamentals Power & Energy_9 doc
...
figure (4) ;
plot(nm,eff,'b-','LineWidth',2.0);
xlabel('\bf\itn_{m} \rm\bf(r/min)');
ylabel('\bf\eta (%)');
title ('\bfEfficiency versus Speed'); ...
plot(nm,t_ind,'k-','LineWidth',2.0);
xlabel('\bf\itn_{m}');
ylabel('\bf\tau_{ind}');
title ('\bfInduction Motor Torque-Speed Characteristic&a...
Electric Machinery Fundamentals Power & Energy_11 ppt
...
plot(t_ind_noar,n_noar,'b-','LineWidth',2.0);
hold on;
plot(t_ind_ar,n_ar,'k ','LineWidth',2.0);
xlabel('\bf\tau_{ind} (N-m)');
ylabel('\bf\itn_{m} ...
figure(1);
plot(t_ind,n,'b-','LineWidth',2.0);
xlabel('\bf\tau_{ind} (N-m)');
ylabel('\bf\itn_{m} \rm\bf(r/min)');
title ('\bfDiffere...
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