Robust Non-linear Controller for Buck Converter

In this paper, a special kind of non-linear discontinuous feedback is proposed. It provides stabilization of the main parameter of the buck (step-down) converter, namely the output voltage. It is essential, that the input voltage and the load consumption current are unknown parameters. The idea, is to use so-called "vortex algorithms". These algorithms are able to provide robust properties of the plant, considering external unmatched disturbances. Numerical simulation has been carried out, which confirms the performance of the proposed algorithms.