DC-DC buck converter with second order sliding mode control: analysis design and implementation
by Brijesh B. Naik; Axaykumar J. Mehta
International Journal of Power Electronics (IJPELEC), Vol. 12, No. 2, 2020

Abstract: This article presents design, analysis and implementation of second order sliding mode controller (SOSMC) for DC-DC buck converter. Firstly, second order sliding mode controllers with prescribed convergence law is designed using the buck converter model. The necessary bounds on the parameter variations for designing the SOSM are obtained. The closed loop stability condition is also derived using Lyapunov function. The SOSM controller is implemented with digital signal controller STM32F407VG based on ARM cortex M4 controller. The converter performance is assessed in simulation as well experimentally with the SOSMC and compared with classical sliding mode control. The effects of varying controller parameters and load disturbances are also analysed to endow the robust performance of the converter and efficacy of the algorithm.

Online publication date: Wed, 05-Aug-2020

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