Maximum Power Tracking of Solar Panel using Modified Incremental Conductance Method

Abstract

Static method to optimize a power delivered by a solar panel is called Maximum Power Point Tracking (MPPT). The method tries to find a maximum power from its PV solar panel characteristics curve using a power converter. MPPT is realized using a buck boost converter and Filter variable step size modified incremental conductance method. Experimental works show that the MPPT system successfully seeks its maximum power and decreases the oscillation during pathway to reach the maximum power. The power generated by the solar panels at 1000 watt/m2 (without MPPT) is 4.17 watt $(R = 50 \Omega)$ and 2.37 watts (R = $25 \Omega)$. MPPT system can increase the power to solar panels into 4.48 watt (R = $50 \Omega)$, and 4.32 watt (R = $25 \Omega)$. The power generated by the solar panels at 750 watt/m2 (without MPPT) is 2.53 watt (R = $50 \Omega)$ and 1.48 watts (R = $25 \Omega)$. MPPT system designed also improve the power of solar panels into 3.02 watt (R = $50 \Omega)$ and 3.02 watt (R = $25 \Omega)$. The error steady state in the maximum power condition is 1.188%.