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

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.

Application of Whale Optimization Algorithm Based FOPI Controllers for STATCOM and UPQC to Mitigate Harmonics and Voltage Instability in Modern Distribution Power Grids

“…Power quality (PQ) challenges and their remediation are now a priority for transmission system operators. PQ issues arise due to many causes such as nonlinear loads (NLs), transient faults [1,2], and the installation of renewable generators. This needs PQ improvement, which helps to extend the equipment's life cycle as well as increase the supply reliability for supplying critical loads in the electric system [3][4][5].…”

“…transient faults [1,2], and the installation of renewable generators. This needs PQ improvement, which helps to extend the equipment's life cycle as well as increase the supply reliability for supplying critical loads in the electric system [3][4][5].…”

Network‐constrained unit commitment‐based virtual power plant model in the day‐ahead market according to energy management strategy

“…To make this happen, quite a few scenarios need to be considered, and the probability distribution function (PDF) related to uncertainties should be known to reach a reliable solution. However, having accurate knowledge of the PDFs related to the output power of renewable source [28][29][30][31] (WF), for instance, requires considerable time. Additionally, as the number of scenarios is large, the computational modelling is complicated and time-demanding.…”

Energy management of distribution network with inverter‐based renewable virtual power plant considering voltage security index

“…To this end, a two-stage optimization problem is established to minimize the expected energy loss (EEL) and the additive inverse of the VSI. In this presentation, the boundaries related to the VSI, optimal AC power flow, and operating model of renewable sources [37][38][39][40][41] and flexible tools (e.g. EVs and DRPs), as well as inverter, are taken into account.…”