Analysis of Voltage and Armature Resistance Regulation of Direct Current Motors

The analysis method used is to create modelling of DC motor control simulation using simulink model in the Matlab (Matrix Laboratory) application. The results obtained are the starting current of the DC motor before controlling 441.5 Ampere while the nominal current is 42.4 Amperes. After controlling with the addition of external resistance, the starting current becomes 73.59 Amperes and controlling by regulating the armature voltage with the starting current was only 44.98 Amperes. For DC motor rotation speed before controlling will change along with load changes, namely: 50% increase in load causes the rotation to 1712 rpm, 75% increase in load causes the rotation to 1696 rpm while a 35% load decrease causes DC motor rotation becomes 1777 rpm. Then after controlling: 50%, 75% increase in load and 30% decrease did not change the rotation speed because the rotation steady at 1750.71 rpm