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clc
// Variable Initialization
Vm=230//Supply Voltage in Volts
Ra=0.75//Combined Field and Armature circuit resistance in Ohm
N=1300//Motor speed in Rpm
V=210//Rated voltage of motor in Volts
a=45//firing angle in Degree
Kaf=0.03 //Constant in N-m/A^2
Kres=0.075 //Constant in V-s/Rad
//Solution
//For Full-converter controlled Dc Drive
W=(2*%pi*N)/60//angular speed in Rad/sec
Ia=(((2*Vm*1.414)/%pi)*(cosd(a))-(Kres*W))*(1/(Ra+Kaf*W))//Armature current in Amp
T=Kaf*(Ia)^2//Torque in N-m
I=(T/Kaf)^(1/2)//motor current in Amp
Va=(2*Vm*1.414)*(cosd(a))*(1/%pi)//Average voltage in Volts
//Input Power if losses are neglected
Ps=Va*I//Power loss in Watt
Pi=Vm*I//power input in watt
Pf=(Ps/Pi)//Power Factor in Lag
//Result
printf('\n\n The motor Torque =%0.1f N-m \n\n',T)
printf('\n\n The Supply Power Factor =%0.1f Lag \n\n',Pf)
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