Implementation of photovoltaic inverter controller on DSP

Abstract

With the current ever increasing demands for energy from conventional sources reaching critical levels and limitations on supply and demand, defying the best efforts of both scientists and governments to implement, the development of renewable energy sources is becoming increasingly important and viable. Among these renewab le energy solutions, the photovoltaic system is one of the most promising energy sources. Such system show ever still present some significant drawbacks such as low efficiency and nonlinear P–V characteristics. This work addresses these issues using a number of novel techniques. In this context, our thesis deals the development and improvement of PV systems, in which design of Flyback converter, grid connected H-bridge inverter have been validated using Matlab/Simulink and developed experimental prototype. In addition, a new variable step-size incremental Conductance IC MPPT (maximum power point tracking) algorithm has been developed and tested successfully on a photovoltaic system based on Flyback converter and control circuit using dsPIC30F4011. The resulting techniques and development represents significant advances in the field of PV generation and control.