Asymmetrical Source Configuration of Multilevel Inverter on Solar PV System- A Review

Abstract

Solar energy is the best clean alternative energy resource. During shading condition arrays can be treated as an asymmetrical DC source for multilevel inverter, based on insulation level, sets of PV panels are formed to act as DC source. During shading condition, based on insulation level sets of PV panels are allocated to multilevel inverter to as asymmetric source. With the growing research in multilevel inverter there are many topologies have been conceptualized which are having advantage over the conventional inverters. By allocating as asymmetric source the lesser source higher number of levels can be synthesized and the MPPT complexity can be reduced. The review of this paper toward the comprehensive analysis of conventional and novel cross connected source MLI topologies with reduced count for asymmetric source configuration for Solar PV application, as all cross connected source MLI cannot be implemented for asymmetric source configuration.

Keyword: multilevel inverter, maximum power point tracking (MPPT), solar PV, total harmonic distortion(THD)