Advanced Control of DC-DC Converters: Design & Simulation

Abstract

This work aims to design and implement an efficient control strategy for a push-pull converter using the Active Disturbance Rejection Control (ADRC) technique. The averaged mathematical model of the converter was developed to accurately represent its dynamic behavior for control purposes. An Extended State Observer (ESO) was constructed to estimate unmeasured states and disturbances. The controller gains were tuned based on the desired bandwidth to ensure fast response and robust stability. The system Simulation was implemented in Simulink using MATLAB Function blocks for both modeling and control. A modified classical PID controller was also implemented for performance comparison. Simulations were conducted under three scenarios involving changes in reference voltage, input voltage, and load resistance. The results showed that ADRC offers superior performance in terms of speed, overshoot reduction, and disturbance rejection capability.