Fuzzy logic controller based SEPIC converter of maximum power point tracking

This paper presents a fuzzy logic controller (FLC) based single-ended primary-inductor (SEPIC) converter of maximum power point tracking (MPPT). The proposed scheme ensures optimal use of PV array and proves its efficacy in variable load conditions, unity and lagging power factor at the inverter output (load) side as it is used also there. The real-time implementation of the MPPT SEPIC converter is done by digital signal processor (DSP); TMS320F28335. The performance of the converter is tested in both simulation and experiment at different operating conditions. The results are compared to PI based ones due to its severe use in industries. The results show that the proposed FLC based SEPIC-MPPT scheme can accurately track the reference signal and transfer power around 4.8% more than conventional PI based system.