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Diffstat (limited to '3681/CH11/EX11.4/Ex11_4.sce')
-rw-r--r-- | 3681/CH11/EX11.4/Ex11_4.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/3681/CH11/EX11.4/Ex11_4.sce b/3681/CH11/EX11.4/Ex11_4.sce new file mode 100644 index 000000000..1bdacecba --- /dev/null +++ b/3681/CH11/EX11.4/Ex11_4.sce @@ -0,0 +1,26 @@ +// Calculating the suitable number of slots and conductors per slot
+clc;
+disp('Example 11.4, Page No. = 11.28')
+// Given Data
+// 3 phase star connected alterator (Single layer winding)
+rpm = 300;// R.p.m.
+E = 3300;// Voltage rating (in volts)
+f = 50;// Frequency (in Hz)
+D = 2.3;// Diameter of core (in meter)
+L = 0.35;// Length of core (in meter)
+Bm = 0.9;// Maximum flux density in the air gap (in Wb per meter square)
+// Calculation of the suitable number of slots and conductors per slot
+ns = rpm/60;// Synchronous speed (r.p.s)
+p = 2*f/ns;// Number of poles
+Bav = 2/%pi*Bm;// Average flux density in the air gap (in Wb per meter square)
+Flux_pole = Bav*%pi*D*L/p;// Flux per pole (in Wb)
+Eph = E/3^(1/2);// Voltage per phase (in volts)
+ys = 40;// Slot pitch (in mm). The slot pitch should be nearly 40 mm for 3.3 kV machines
+Kw = 0.955;// Taking winding factor
+Tph = int(Eph/(4.44*f*Flux_pole*Kw));// Turns per phase
+q = int(%pi*D/(3*p*ys*10^(-3)));// Slots per pole per phase
+S = 3*p*q;// Total number of stator slots
+Tph6 = 6*Tph;// Total number of stator conductors
+Zs = int(Tph6/S);// Conductors per slot
+disp(Zs*S,'Total stator conductors used =');
+disp(Zs*S/6,'Turns per phase used=');
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