Open AccessFractional Order PI Control in Hybrid Renewable Power Generation System to Three Phase Grid Connection
Author(s) -
Ahmed H. Yousef,
Farag K. AboElyousr,
Ahmed Elnozohy,
Moayed Mohamed,
Saad A. Mohamed Abdelwahab
Publication year - 2020
Publication title -
international journal on electrical engineering and informatics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 18
ISSN - 2085-6830
DOI - 10.15676/ijeei.2020.12.3.5
Subject(s) - control theory (sociology) , controller (irrigation) , renewable energy , photovoltaic system , grid connection , microgrid , maximum power point tracking , grid , computer science , mathematics , inverter , engineering , electrical engineering , control (management) , voltage , geometry , artificial intelligence , agronomy , biology
The main objective of this paper is to allow renewable energy sources (RES) to actively participate within hybrid microgrid by proposing a new control system based on fractional order proportional integral (FOPI) controller. Fractional order proportional integral controller is a classical proportional integral (PI) in which the integral part is a fraction instead of integer numbers. The paper introduces a hybrid photovoltaic (PV), wind turbine and battery storage system connected to a three-phase grid. Three types of controller are considered and compared for a hybrid renewable energy system (HRES), namely, FOPI, PI, and the fractional order integral control (FIC). For the PV resource, maximum power point tracking (MPPT) controller was designed using the incremental conductance plus integral regulator technique. A DC/DC boost converter was utilized to connect the renewable energy resources to a point of common coupling. MATLAB/Simulink is adopted to perform the simulation results of the developed HRES. The results show that the FOPI controller outperforms other controllers under several operating conditions. The paper also includes experimental results from a prototype real scale.