Speed control of separately excited DC motor using class a chopper

This paper deals with design and implementation of speed controller to control the speed of separately excited DC motor using a class A chopper. The speed of Separately Excited DC motor is controlled to a maximum of its rated speed using chopper as a converter. The speed controller used is Proportional Integral type which reduces steady state error and provides fast control. The parameters of the speed controller have been designed using control system theory. The validity of the proposed approach is presented by simulating the DC drive system in SCILAB (XCOS) and also by implementing the same using TI'sF28027 launch pad under varying speed and varying load conditions.