Comparison between LCL and LLCL Filters For a Grid Connected Inverter Using Selective Harmonic Modulation

Abstract

This paper shows an analysis between the analytical design of photovoltaic power station filter and a real case filter. Indeed, the analytical filter considered in the design phase is an LCL filter, while the real case is an LLCL filter. This difference could impact the current harmonics rejected on the grid and breaks grid codes.