Real time Simulation of Gird-connected Photovoltaic Multilevel Inverter using Hybrid GA/PSO Optimization Algorithm

This paper presents a new real-time intelligent optimization algorithm to minimize the voltage harmonics of a multilevel photovoltaic inverter. Hybrid Genetic algorithm /Particle swarm optimization algorithm is employed in a real-time simulation to identify the best fire angels of the multilevel inverter to eliminate any destructive effect, such as dc voltage variations and changes in line and dc-link resistors. The dual objective function of harmonic minimization and voltage regulation is considered in this real-time simulation. This approach can be applied to any multilevel inverter with various numbers of levels. The validity of the proposed algorithm is proven by real-time simulation of seven and an eleven-level inverter.