A PV array is a nonlinear power source. The output power induced in the photovoltaic modules depend on solar radiation and temperature of the solar cells. The selection of converter is important for MPPT operation. A boost converter (step-up converter) is a Dc to Dc power converter that steps up voltage (while stepping down current) from its input (supply) to its output (load). To reduce voltage ripple, filters made of capacitors (sometimes in combination with inductors) are normally added to such a converter's output (load-side filter) and input (supply-side filter). The MPPT algorithm represents optimal load for PV array, producing opportune voltage for the load. Perturbation and Observation (P&O) method has a simple feedback structure and fewer measured parameters. It operates by periodically perturbing (i.e. incrementing or decreasing) the array terminal voltage and comparing the PV output power with that of the previous perturbation cycle.
PV Array, MPPT, Boost Converter
