Analog controller for home application of photovoltaic system using interleaved DC-DC converter and single-phase inverter

This paper presents analog design, and implementation of a photovoltaic system using an interleaved dc-dc converter cascaded with a single-phase inverter for home application. Maximum Power Point Tracking (MPPT) algorithm is incorporated into the developed controller of the interleaved dc-dc converter to maximize the obtained power from the PV array. The interleaved dc-dc converter is compared with the regular boost converter topology. The interleaved dc-dc converter results in a reduced filter size due to the reduction in the ripple content at the input and the output terminals of the converter. Designing of a closed loop analog controlled single-phase inverter with Sinusoidal Pulse Width Modulation (SPWM) is implemented and tested in the lab for AC stand-alone load. Moreover, experimental investigations presented give the utility of such a control approach.