Speed Control of Chopper Fed DC Motor Using PID Controller for Industrial Drive Application

Abstract

The automatic control has played a vital role in the advance of engineering and science. Nowadays in industries, the control of direct current (DC) motor is a common practice thus the implementation of DC motor of controller speed is important. The main purpose of motor speed control is to keep the rotation of the motor at the preset speed and to drive a system at the demanded speed. In this paper, a simplified speed control design of chopper fed separately excited DC motor (SEDC) drive is proposed. The speed control methods of SEDC are either by varying the armature voltage, or by varying field flux of DC motor to obtain the speed at the target value. Armature voltage method is used in this project in which chopper gives the desired input voltage for the motor. The firing circuit of chopper receiving signal from PID controller to change the input voltage of DC motor to achieve the desired speed. PID controller chooses its parameters base on trial and error method. The expectation of this project is to get the precise the demanded speed and to drive a motor at that speed. The simulation model is implemented in the MATLAB/SIMULINK under varying speed to demonstrate its performance and results indicate that our proposed control schemes have good performance.