Global Asymptotic Stabilty Analysis of DC-DC Buck Converters
Kanimozhi Kannabiran, B. Raja Mohamed Rabi, Booma Jayapalan, Krismadinata Krismadinata, Thangapalani Lakshmanan, Rajalakshmi Krishnamurthi
Abstract
Stability of power electronic converters is one of the most important problems related to their dynamics. The problems related to global asymptotic stability is discussed here. The design example used is DC-DC buck converter with Adaptive sliding mode control. An averaged small signal model is derived and transfer functions are obtained. Stability is also verified using conventional techniques by MATLAB simulation. Simulation results and mathematical proof shows that closed loop system designed is stable and a fast response is obtained. Simulated results show that the simulated converter system acquires the excellent robustness feature of achieving a stable steady-state and fast transient response under variable operating points. A prototype model has been developed and simulated results are compared with experimental results. The results validate the stability analysis of Dc-Dc buck converter