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authorprashantsinalkar2017-10-10 12:27:19 +0530
committerprashantsinalkar2017-10-10 12:27:19 +0530
commit7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch)
treedbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3760/CH4/EX4.81
parentb1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff)
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+clc;
+p=3000; // power of amplidyne
+v=300; // voltage of amplidyne
+w=200; // angular velocity of amplidyne
+rf=50; // field resistance
+ra=5; // armature resistance
+rc=1; // compensating winding resistance
+kqf=250;
+kdq=100;
+kqd=80; // voltage constants
+A=(kdq*kqf)/(ra*rf); // voltage amplification factor
+id=p/v; // rated current
+vf=(v+id*(ra+rc))/A; // field voltage
+ifl=vf/rf; // field current
+pk=(v*id)/(vf*ifl); // power gain
+printf('Field current is %f A\n',ifl);
+printf('Power gain at rated output is %f \n',pk);
+// when compensation is zero
+vf=(v+id*(((kdq*kqd)/ra)+ra))/A; // field voltage
+ifl=vf/rf;
+printf('Field current at zero compensation is %f A\n',ifl);
+pk=(v*id)/(vf*ifl); // power gain
+printf('Power gain at rated output at zero compensation is %f \n',pk);