Compensation of mismatch in PV characteristics using DC-DC converter

Abstract

PV modules output performances are affected by change in irradiance, temperature level and partial shading condition. Therefore, it is necessary to improve output power of PV module to achieve maximum power. This paper presents MATLAB based Simulink model in which flyback converter is used as MPPT converter. The advantage of having this scheme is that switching losses are less as flyback converter is operating under normal MPPT mode with one switch only. The proposed Distributed Module Current Compensation Technique using Flyback Converter (DMCCT-FC) improves the output power of PV system under partial shading condition and helps in achieving MPPT. Simulation results shows that the proposed DMCCT-FC MPPT technique works satisfactorily under given environmental scenario.