![]() From the results it has been shown that the modelled DC motor follows the reference speed with a high accuracy even during speed and load changes. The reference current is compared to the armature current by a current controller that also has a PI controller and the current difference if any is used to fire the chopper which then supplies the DC motor with a DC voltage. A speed controller made from a PI controller is used to compare the DC motor speed and reference speed then generate a current reference in case of a deviation between the two speeds. The DC motor is supplied from a DC source through a chopper that is made up of a free-wheeling diode and a gate turn off thyristor. In this project, a system has been designed, modelled and simulated for the speed regulation of a separately excited DC motor under dynamic conditions of reference speed and mechanical input toque. Available files: Matlab Simulink and Report.
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