Design and Control of a Floating Interleaved Boost DC-DC Converter for Fuel Cell Applications

International audienceThis paper aims to the design and control of a de-de floating interleaved boost converter with high voltage gain. Firstly, the process of the components sizing is presented in detail. Secondly, the controller with dual-loop cascade structure, both based on super-twisting sliding mode algorithm, are proposed to deal with the uncertainties of the converter. The control goals of constant converter output voltage, equal current sharing between phases and constant switching frequency (for phase interleaving to reduce the input current ripple) are achieved. The stability of the sliding mode inner loop and the outer loop are both proven using Lyapunov stability theorem. The effectiveness and the robustness of the proposed controller are validated by the simulation and experiment results