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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /833/CH11/EX11.12 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '833/CH11/EX11.12')
| -rwxr-xr-x | 833/CH11/EX11.12/Ex11_12.sce | 37 | ||||
| -rwxr-xr-x | 833/CH11/EX11.12/Ex11_12.txt | 37 | ||||
| -rwxr-xr-x | 833/CH11/EX11.12/Result11_12.txt | 36 |
3 files changed, 110 insertions, 0 deletions
diff --git a/833/CH11/EX11.12/Ex11_12.sce b/833/CH11/EX11.12/Ex11_12.sce new file mode 100755 index 000000000..f2659dfa7 --- /dev/null +++ b/833/CH11/EX11.12/Ex11_12.sce @@ -0,0 +1,37 @@ +//Caption:Find (a)Equivalent rotor current per phase (b)Stator current per phase (c)Power factor (d)Rotor input (e)Rotor copper losses (f)Torque (g)Mechanical power output from rotor (h)Stator input (i)Efficiency.Solve it by APPROXIMATE equivalent circuit method
+//Exa:11.12
+clc;
+clear;
+close;
+V=440//Voltage supplied(in volts)
+p=8//Number of poles
+f=50//Frequency(in hertz)
+r1=0.2//Stator resistance(in ohm)
+x1=1.2//Stator reactance(in ohm)
+r2=0.3//Equivalent resistance of rotor referred to stator(in ohm)
+x2=1.2//Equivalent reactance of rotor referred to stator(in ohm)
+r_m=150//Magnetising resistance(in ohms)
+x_m=18//Magnetising reactance(in ohms)
+P_wf=750//Winding and friction losses(in watt)
+s=0.04//Slip
+I2=V/((r1+(r2/s))+(%i*x1)+(%i*x2))
+disp(I2,'(a)Equivalent rotor current per phase(in A)=')
+y1=1/r_m
+y2=1/(%i*x_m)
+I_o=V*(y1+y2)
+I_1=I2+I_o
+disp(I_1,'(b)Stator current per phase(in A)=')
+pf=cosd(atand(imag(I_1)/real(I_1)))
+disp(pf,'(c)Power factor=')
+P_r=(I2*conj(I2))*(r2/s)
+disp(P_r,'(d)Rotor input(in watt)=')
+P_rc=(I2*conj(I2))*r2
+disp(P_rc,'(e)Rotor copper losses(in watts)=')
+T=P_r/(2*%pi*((f*120)/(p*60)))
+disp(T,'(f)Torque(in N-m)=')
+P_me=P_r-P_rc-(P_wf/3)
+disp(P_me,'(g)Mechanical power output from rotor(in watts per phase)=')
+P_si=V*pf*(sqrt(I_1*conj(I_1)))
+disp(P_si,'(h)Stator input(in watts per phase)=')
+e=(P_me/P_si)*100
+disp(e,'(i)Efficiency (in %)=')
\ No newline at end of file diff --git a/833/CH11/EX11.12/Ex11_12.txt b/833/CH11/EX11.12/Ex11_12.txt new file mode 100755 index 000000000..f2659dfa7 --- /dev/null +++ b/833/CH11/EX11.12/Ex11_12.txt @@ -0,0 +1,37 @@ +//Caption:Find (a)Equivalent rotor current per phase (b)Stator current per phase (c)Power factor (d)Rotor input (e)Rotor copper losses (f)Torque (g)Mechanical power output from rotor (h)Stator input (i)Efficiency.Solve it by APPROXIMATE equivalent circuit method
+//Exa:11.12
+clc;
+clear;
+close;
+V=440//Voltage supplied(in volts)
+p=8//Number of poles
+f=50//Frequency(in hertz)
+r1=0.2//Stator resistance(in ohm)
+x1=1.2//Stator reactance(in ohm)
+r2=0.3//Equivalent resistance of rotor referred to stator(in ohm)
+x2=1.2//Equivalent reactance of rotor referred to stator(in ohm)
+r_m=150//Magnetising resistance(in ohms)
+x_m=18//Magnetising reactance(in ohms)
+P_wf=750//Winding and friction losses(in watt)
+s=0.04//Slip
+I2=V/((r1+(r2/s))+(%i*x1)+(%i*x2))
+disp(I2,'(a)Equivalent rotor current per phase(in A)=')
+y1=1/r_m
+y2=1/(%i*x_m)
+I_o=V*(y1+y2)
+I_1=I2+I_o
+disp(I_1,'(b)Stator current per phase(in A)=')
+pf=cosd(atand(imag(I_1)/real(I_1)))
+disp(pf,'(c)Power factor=')
+P_r=(I2*conj(I2))*(r2/s)
+disp(P_r,'(d)Rotor input(in watt)=')
+P_rc=(I2*conj(I2))*r2
+disp(P_rc,'(e)Rotor copper losses(in watts)=')
+T=P_r/(2*%pi*((f*120)/(p*60)))
+disp(T,'(f)Torque(in N-m)=')
+P_me=P_r-P_rc-(P_wf/3)
+disp(P_me,'(g)Mechanical power output from rotor(in watts per phase)=')
+P_si=V*pf*(sqrt(I_1*conj(I_1)))
+disp(P_si,'(h)Stator input(in watts per phase)=')
+e=(P_me/P_si)*100
+disp(e,'(i)Efficiency (in %)=')
\ No newline at end of file diff --git a/833/CH11/EX11.12/Result11_12.txt b/833/CH11/EX11.12/Result11_12.txt new file mode 100755 index 000000000..8bc0d28b9 --- /dev/null +++ b/833/CH11/EX11.12/Result11_12.txt @@ -0,0 +1,36 @@ +(a)Equivalent rotor current per phase(in A)=
+
+ 52.083013 - 16.233666i
+
+ (b)Stator current per phase(in A)=
+
+ 55.016346 - 40.678111i
+
+ (c)Power factor=
+
+ 0.8040793
+
+ (d)Rotor input(in watt)=
+
+ 22321.291
+
+ (e)Rotor copper losses(in watts)=
+
+ 892.85165
+
+ (f)Torque(in N-m)=
+
+ 284.20351
+
+ (g)Mechanical power output from rotor(in watts per phase)=
+
+ 21178.44
+
+ (h)Stator input(in watts per phase)=
+
+ 24207.192
+
+ (i)Efficiency (in %)=
+
+ 87.488211
+
\ No newline at end of file |