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clc
// Variable Initialization
Vm=230//Supply Voltage in Volts
Ra=0.25//Combined Field and Armature circuit resistance in Ohm
N=1000//Motor speed in Rpm
V=210//Rated voltage of motor in Volts
a=30//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
Va=(2*Vm*1.414)*(cosd(a))*(1/%pi)//Average voltage in Volts
//Input Power if losses are neglected
Ps=Va*Ia //Power loss in Watt
Pi=Vm*Ia//power input in watt
Pf=(Ps/Pi)//Power Factor in Lag
//Results
printf('\n\n The motor Current =%0.1f Amp \n\n',Ia)
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)//The answers vary due to round off error
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