Abstract
In this paper, a higher-order sliding mode controller for a power DC–DC converter is proposed. The uncertainty and disturbance are implicit to be unknown. A detailed analysis to explore the local and global stability of a Buck DC–DC converter was presented in this paper. Different control schemes were implemented to regulate the output voltage and to eliminate the high current ripples for the proposed converter, beginning with a proportional-integral-derivative compensation scheme, then a sliding mode controller, a higher-order sliding mode controller and finally an adaptation low with higher-order sliding mode controller (AHOSMC). Stability and robustness of the AHOSMC are proved by using the classical Lyapunov criterion. The sensitivity of parameters variation is analyzed, and a detailed bifurcation analysis is undertaken.
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