Continuous Practical Terminal Sliding Mode Controller for Boost Converters: Design and Experimental Evaluation

Abstract

This brief presents a continuous practical terminal sliding mode (CPTSM) control method for precisely regulating the output voltage of boost converters, effectively addressing the converters’ nonlinear and nonminimum phase characteristics. The proposed CPTSM control method starts with the generalized super-twisting extended state observers to estimate the input voltage and load, thereby generating a reference current that adapts to real-time variations of the operating condition. Based on the exact feedback linearization technique, the CPTSM control strategy is developed. The benefits of the proposed strategy lie in its fast transient response and strong robustness. Furthermore, stringent theoretical analysis verifies the CPTSM control system. Finally, simulation and experimental results demonstrate the effectiveness and superiority of the proposed control scheme.