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Diffstat (limited to '3640/CH2/EX2.2/Ex2_2.sce')
| -rw-r--r-- | 3640/CH2/EX2.2/Ex2_2.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/3640/CH2/EX2.2/Ex2_2.sce b/3640/CH2/EX2.2/Ex2_2.sce new file mode 100644 index 000000000..16a6da638 --- /dev/null +++ b/3640/CH2/EX2.2/Ex2_2.sce @@ -0,0 +1,26 @@ +clc
+//the example below is an extension of Ex2_1
+L=0.25 //length of stator stack in metres
+r=0.15 //radius of stator stack in metres
+BImax=0.96 //peak value of air gap flux density in tesla
+P=6 //no of machine poles
+phi=(4*L*r*BImax)/P //flux per pole in webers
+//above comes from Ex2_1
+span=5 //span of each coil given by no of slots
+edps=30 //electrical degrees per slot in degrees
+p=span*edps//coil pitch in degrees
+mprintf("p=%d°\n",span*edps)
+Nc=2//turns of coil
+Kp=sin(((p/2)*%pi)/180) //pitch factor //degree being converted to radians before calculation
+mprintf("Kp=sin(p/2)=%f\n",Kp) //the ans may vary due to roundoff error
+mprintf("λcmax=Nc*Kp*Φ=%fWb turns\n",Nc*Kp*phi)//max flux linkage //ans may vary due to roundoff error
+ns=1000 //machine speed in rev/min
+p=6 //no of poles
+f=(p*ns)/120 //frequency at given speed in Hertz
+mprintf("f=%dHz\n",f)
+mprintf("Ec=sqrt(2)*Π*f*Nc*kp*Φ=%fV\n",sqrt(2)*%pi*f*Nc*Kp*phi)//ans may vary due to roundoff error //voltage induced at above frequency
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