Finite time trajectory tracking of a switched non inverting buck–boost converter using pulse width modulation

Abstract

Control and monitoring of DC–DC converters have become crucial issues as these devices grow more and more prevalent in power electronics applications, including renewable energy systems, DC microgrids, electric vehicle, and More Electric Aircraft (MEA). This paper proposes a novel approach that uses state space averaging method, backstepping control, and pulse width modulation to track the trajectory in finite time of a non-inverting buck–boost converter in both buck and boost modes. The main objective is to find the voltage across capacitor which facilitates tracking of an output reference voltage. For modeling the non-inverting buck–boost converter, the expression of the final state space equation is found using the state space averaging method, while the expression of the continuous finite time controller is found using the backstepping control technique. The tracking error is minimized in the simulation, ensuring stability of the closed loop system based on the Lyapunov stability theorem. The simulation results demonstrate the effectiveness of the proposed control technique. Comparative analysis using fuzzy, PID, PI, OCC (One Cycle Control), GPC (Generalized Predictive Control), energy based model, and MDPP (Minimum Degree Pole Placement) ensures the efficacy of proposed method.