ADAPTIVE CONTROL OF CONVERTER FED D.C. DRIVE

Abstract

This dissertation deals with the experimental studies on self tuning control. of a closed loop variable speed d.c. motor drive system. A self tuning controller for speed control is developed and realised through software on IBM PC. And thyristorized three phase fully controlled converter, microprocessor controlled firing circuit, current controller (PI) and digital speed measurement circuit have been designed, fabricated and tested. Chapter-I consists of literature review and brings out the advantages of self tuning control over other control schemes. Chapter-II gives the complete details of self tuning controller design. Chapter-III deals with the study of motor speed control and system hardware. Chapter-IV describes the system software and their flow charts. Chapter-V deals with tho exper.i.menttil results,. In the last- chapter-VI -conclusion; and scope of further work have been described.