Chaos Control of Boost Converter Based on Super-Twisting Sliding Mode Control

In the beginning, this paper studies the complex dynamic behaviors of current-mode boost converter by bifurcation diagrams and Poincare sectional. Then, in order to control the chaos phenomena well, the energy constant based super-twisting sliding mode control strategy is proposed. The strategy based sliding mode hypersurface allows the voltage and current of boost converter to converge to the expected value within a finite time. Meanwhile, the boost converter works stably in the period-I orbit to ensure an ideal output quality. Compared with other chaos control methods, it has the advantages of fast dynamic response, strong robustness and small voltage ripple. The simulation results clearly show that the proposed control strategy can achieve the desired effect.