Design of Constant Power Generation Controller for Grid Connected PV System

With Increase in demand of clean electricity generation in many countries, the increasing techniques of new photovoltaic (PV) systems force the Distribution System for transmission and distribution of electricity. By considering this aspect, the distributors of electricity are Focused to ensure fast and smooth transformation between maximum power point tracking and constant power generation so the maximum feeding power of PV systems must be limited. Optimum performance and stable operations are achieved in spite of solar irradiance levels by the new control technique which is proposed. In this strategy, PV output power can be regulated as per desired set point and force to operate the PV system at left side of maximum power point without any stability issues. This system consists of solar PV panel, boost converter, MPPT controller, inverter, LCL filter and Load. Here, PV system as energy source. The power generated from solar photovoltaic system is controlled by DC-DC boost converter. A modelling of this system is developed in MATLAB/Simulink. Constant power generation (CPG) control is much effective strategy in terms of stable transitions, high accuracy and fast dynamics which have been verified by experimental results.