Improved MPPT Controller Without System Dependency
Mustafa Engin Başoğlu Bekir Çakır
AbstractThis paper proposes an improved MPPT controller without system dependency. This controller consists of three stages which are initialization, action and perturb and observe (P&O) algorithm. First, value of solar irradiance is estimated by measuring PV current under certain condition. Then, a look-up table is used to calculate duty ratios in the action stage. Finally, P&O algorithm is used to complete MPPT precisely. To validate the superior performance of the proposed MPPT controller, a single ended primary inductance converter (SEPIC) and MPPT system are modelled in MATLAB/Simulink environment. Besides that, experimental results show that proposed controller has better performance compared with P&O algorithm.