Applications of Novel Combined Controllers for Optimizing Grid-Connected Hybrid Renewable Energy Systems

Fatima Menzri, Tarek Boutabba, Idriss Benlaloui (), Larbi Chrifi-Alaoui, Abdulaziz Alkuhayli, Usama Khaled and Mohamed Metwally Mahmoud ()
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Fatima Menzri: LGEA Laboratory, Electrical Engineering Department, Science and Applied Science Faculty, L’arbi Ben M’hid Oum Bouaghi University, Oum Bouaghi 04000, Algeria
Tarek Boutabba: LSPIE Laboratory, Faculty of Science and Technology, University of Khenchela, El-Hamma, BP 1252 Road of Batna, Khenchela 40004, Algeria
Idriss Benlaloui: Laboratory of Electromagnetic Induction and Propulsion Systems (LSPIE), Department of Electrical Engineering, Faculty of Technology, University of Batna 2, Batna 05000, Algeria
Larbi Chrifi-Alaoui: LTI Laboratory of Innovative Technologies, University of Picardie Jules Verne, LTI (EA, 3899), 13 F. Mitterrand Avenue, 02880 Cuffies, France
Abdulaziz Alkuhayli: Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
Usama Khaled: Electrical Engineering Department, Faculty of Energy Engineering, Aswan University, Aswan 81528, Egypt
Mohamed Metwally Mahmoud: Electrical Engineering Department, Faculty of Energy Engineering, Aswan University, Aswan 81528, Egypt

Sustainability, 2024, vol. 16, issue 16, 1-24

Abstract: Hybrid renewable energy systems (HRES) integrating solar, wind, and storage technologies offer enhanced efficiency and reliability for grid-connected applications. However, existing control methods often struggle with maintaining DC voltage stability and minimizing power fluctuations, particularly under variable load conditions. This paper addresses this research gap by proposing a novel control strategy utilizing a PD (1+PI) regulator that combines proportional–integral (PI) and proportional–derivative (PD) controllers. Integrated into the HRES with maximum power point tracking (MPPT), the system includes solar panels, a storage unit, and a wind system featuring a permanent magnet synchronous generator (PMSG). The PD (1+PI) regulator plays a critical role in stabilizing DC voltages within the storage system and collaborates with predictive direct power control (P-DPC) to improve current quality by mitigating fluctuations in active and reactive power. Comparative analysis against traditional direct power control methods shows that the proposed strategy reduces voltage fluctuation by 30% and improves energy utilization efficiency by 25%, validating its efficacy in managing energy from diverse sources to meet nonlinear load demands. The results demonstrate that integrating the PD (1+PI) regulator with MPPT and P-DPC approaches enhances power stability and optimizes energy utilization in grid-connected HRES, underscoring the effectiveness of this advanced control system.

Keywords: hybrid renewable energy systems (HRES); PD (1+PI) regulator; maximum power point tracking (MPPT); direct power control (DPC) (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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