Analysis of High-Performance Two-Stage CPG Interfaced with GTSPPS

The presented paper deals with the analysis of a two-stage constant power generation (CPG) interfaced with a grid-tied solar photovoltaic power system (GTSPPS). In earlier days, for extracting the maximum power point in GTSPPS, different types of MPPT controllers were used. These techniques fail whenever a change in solar irradiance takes place. A CPG technique was proposed that makes use of a single stage, but this technique still has a drawback as its operating area always lies to the right of MPPT, so whenever a sudden change in solar irradiance occurs, the robustness of the CPG algorithm decreases. Thus, there is a need for two-stage CPG so as to have a stable, constant power generation. Further, the performance of two-stage CPG has been compared with different control techniques under dynamic as well as steady-state conditions to know its suitability under practical conditions.