PHOTOVOLTAIC ARRAY FED INVERTER

Babu Paul, Sarath M S, Sebastian Jo Thalackal, Sharun Vittappan, Shonitha Krishnan M

Abstract: Solar energy is the most low cost, competition free, universal source of energy as sun shines throughout. This energy can be converted into useful electrical energy using photovoltaic technology. The steady state reduction of price per peak watt and simplicity with which the installed power can be increased by adding panels are attractive features of pv technology. In this project, a controller to vary the amplitude of the inverter output voltage interposed between the PV array and the load is developed. The detailed modelling of the components of proposed scheme has been taken up. The developed controller varies the pulse-width of a PWM generator, so that that the inverter output voltage varies with irradiation and temperature. The variation of the amplitude is to maximize the power output for a given radiation and temperature. Experimental investigation presented gives the utility of such a control approach.

Keywords: PV Array, Inverter, PIC16F616 microcontroller, PWM technique

DOI: https://doi.org/10.15623/ijret.2014.0305049