Comprehensive Modeling and Control of Grid-Connected Hybrid Energy Sources Using MPPT Controller

Shazly A. Mohamed, Mohamed A. Tolba, Ayman A. Eisa and Ali M. El-Rifaie
Additional contact information
Shazly A. Mohamed: Department of Electrical Engineering, Faculty of Engineering, South Valley University, Qena 83523, Egypt
Mohamed A. Tolba: Nuclear Researches Center, Reactors Department, Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
Ayman A. Eisa: National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
Ali M. El-Rifaie: College of Engineering and Technology, American University of the Middle East, Egaila 15453, Kuwait

Energies, 2021, vol. 14, issue 16, 1-22

Abstract: Nuclear and renewables energies are the two variants for low-carbon energy and the evolving grid suggests possible synergies between them. Nuclear energy introduces supple operations based on power demand, while renewables such as PV and wind hybrid systems depend on the presence and strength of sunlight or wind. For grid stability, there is need to improve their performance in order to overcome the impact of this disadvantage. The paper is a step in this direction as it addresses a detailed comprehensive dynamic modeling and an efficient control of grid-connected energy sources such as PV or wind system to increase system reliability and to ensure the power quality and safe operation of critical demands. The behavior of the suggested hybrid system is tested at different climate circumstances such as variation of sun radiation and wind speed. The PV is equipped with a boost converter and a three-phase pulse width modulation (PWM) inverter. The wind energy comprises a doubly fed generator (DFIG) based on a variable-speed wind turbine. The two controllers’ rotor-side and grid-side converters of DFIG have the ability to generate and observe reactive power, to keep constant speed of the rotor and control the DC-link voltage. The proposed scheme was investigated using MATLAB software. The maximum power point tracking (MPPT) was used for two systems, PV and wind, in varying weather conditions. The simulation results prove that the voltage at the point of common coupling was constant. Furthermore, the injected current of the grid side was in sinusoidal form and was synchronized with grid side voltage. In addition, the injected power-to-utility grid was around power delivered by the hybrid PV and wind system.

Keywords: photovoltaic array; wind turbine; DFIG; DC-DC boost converter; MPPT control technique (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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