Abstract:

Photovoltaic panels generate a limited amount of power, so the transmission of this power to the grid side should be done by an efficient DC-DC converter structure and a powerful controller circuit. The controller should be designed based on accurate mathematical analysis to act with high quality and use the minimum number of components as much as possible in order to obtain a cheap and simple topology. In this study, the performance analysis of a novel proportional-integral (PI) controller and Sliding Mode Controller (SMC) methods for a DC-DC power boost converter is examined in Continuous Conduction Mode (CCM). Having a comprehensive mathematical model for the converter allows designing an accurate controller. So, in the first step, an exhaustive model for this converter based on steady space matrixes has been presented. In the next step, these two different controllers investigated based on the proposed model of the boost converter and finally, comparisons for the performance analysis of presented controllers have been done. One of the novelty aspects of the PI controller is that it will give sample currents of the inductor to make a relation between the output voltage and the controller strategy in order to generate suitable pulses to drive the power switch and SMC does not need to any sampling for this purpose and acts through tracking the output voltage.