Digital PID Controller Design for DC-DC Buck Converter

Abstract

DC-DC converters with computerized digital control methods picked up ubiquity because of their high productivity, low power utilization, higher resistance to natural changes, for example, temperature and maturing of parts, capacity to interface effortlessly, of programmability and to actualize advanced control plans. Their requisitions incorporate compact electronic gadgets, for example, computer and smart phones others. Various techniques have been developed to meet the requirement of output voltage and at the same time it is also necessary to get more resolution to increase precision. The other is to develop new control methods that can utilize the advantages of the digital controller so as to improve the dynamic performance of the switching power converters. The objective of this thesis is to study current techniques of DPWM generation and to develop new techniques using 8052 for low cost implementation and PID controller implementation. Usage of computerized PID controllers for DC-DC converters is talked about in this thesis. The essential preferences of digital control over analog control are higher invulnerability to ecological changes, for example, temperature and maturing of parts, expanded adaptability by changing the product, more praiseworthy control procedures and lessened number of segments. Simple PID controller was initially planned utilizing frequency response techniques, and then changed over into digital control.