DESIGN AND IMPLEMENTATION OF A DISCRETE CONTROLLER FOR SOFT SWITCHING DC - DC CONVERTER

Abstract

Abstract: In this paper, high efficiency Zero Voltage Switching buck converter with closed loop discrete PID controller is designed and simulated. The conventional buck converter generates switching losses at turn on and turns off. The efficiency of the buck converter can be improved by using resonant component. The only switch used in the converter is turn-ON at zero current and turn-OFF at zero voltage by means of the resonant component Inductor and Capacitor. The dynamic performance of the ZVS buck converter can be improved by the design of discrete PID PWM controller. A 10W / 400 KHz Soft switched Discrete PID PWM buck converter is simulated and analyzed using MATLAB / Simulink. Discrete PI Controller, Analog PI & PID Controller is also designed and simulated whose performance parameters are compared