Modeling of a DC boost converter behavior in PV system using finite state machines

This paper presents an approach to the modeling of a DC boost converter used in a small photovoltaic system, whose operation is controlled by the maximum power point tracking controller. The presented simulation model is capable of representing converter´s dynamic operation during the changes of solar irradiance as well as speeding-up the simulation during a steady state converter´s operation, when there is no change of solar irradiance. In order to achieve this functionality, a finite state machines model of the photovoltaic system was created. Used mathematical formulas and simulation results showing model´s functionality are presented as well.