DESIGN AND ANALYSIS OF THYRISTOR BASED DC DRIVE SYSTEM FOR SPEED CONTROL OF DC MOTOR

In industries, DC motors are used because of their simple design and consistent performance. Also, DC motors posses a broad range of speed control, so these motors are preferred to be used as variable speed drives. Another advantages of DC motor are their starting torque which is significantly high and better speed regulation. These features make a DC motor favorable for use in industries and hence it becomes very important to have a controller designed for DC motor which can ensure their better speed control. In this paper, a method for speed control of DC motor using three phase thyristor-based converter and Modulus-Hugging approach has been proposed. The control methodology has been realized through MATLAB/SIMULINK. The power converter designed is thyristor based. The speed of DC motor has been controlled by varying the voltage across the armature circuit. Simulation results have been obtained and presented in this paper to demonstrate the efficacy of the projected system. This system can also be implemented on hardware using different types of loads.