Fly back inverter has the points of interest, for example, conservative compliance, straightforward control circle, electric detachment, high advance up proportion, high effectiveness, and so on., consequently is an appealing answer for photovoltaic air conditioning module applications. In this topology, BCM is more favored contrasted with DCM and CCM, in light of its higher power level, higher effectiveness and more extensive exchanging recurrence transmission capacity. Be that as it may, the control of BCM is more muddled because of its variable exchanging recurrence. This additionally prompts the trouble to get the exact scientific model between the yield current iout and the reference current iref, which impacts the THD of iout . This paper breaks down and proposes a numerical model among iout and iref in BCM through hypothetical determination, and proposes a novel control system to produce the reference current that can diminish THD of yield current. In the mean time the acknowledgment of MPPT dependent on the numerical model is additionally examined. At last, reproduction and examination results dependent on an enhanced Fly backinverter model are introduced, which approves the proposed scientific model and the control procedure.

Keywords : Flyback converter, harmonics, interleaved con- verters, photovoltaic (PV) inverters.