This paper deals with the fractional modeling of a DC-DC buck-boost converter, suitable in solar-powered electrical generation systems, and the design of a fractional controller for the aforementioned switching converter.\udAlthough the modeling and design of the controller is carried out for this particular DC-DC converter,it can be easily extended to other kind of switching converter.\udIn addition, the comparison between integer-order plant/controller and fractional-order plants/controller is carried out. The article also shows that, under the\udsame design conditions, the fractional-order controller has a better performance and behaviour than the classical integer-order controller in both situations, that is, with\udinteger-order plant and fractional-order plant models.
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