<p>The demand for energy is continuously increasing, while there is urgent pressure to reduce the amount of greenhouse gas emissions. With this in mind, renewable energy solutions have never been more needed. This paper presents a supervisory control approach developed to handle and balance power supply provided by a hybrid renewable energy system integrating wind turbines, solar panels, and battery storage. The proposed system not only promotes the integration of renewable energy sources and improves energy efficiency, but also contributes to environmental sustainability. A critical issue of the research consists of accurately regulating the DC bus voltage to ensure stability. In doing so, we have adopted a multi-layered, Stateflow-based control approach in which all the priorities of each energy source are clearly stated. By coordinating energy generation, storage, and distribution, our approach aims at improving the overall reliability. The system consists of a wind turbine equipped with a gearless permanent magnet synchronous generator (PMSG), a photovoltaic array, and a lithium-ion battery. Each of these will be dedicated to MPPT algorithms that will allow maximizing efficiency. To model and validate our system, we used MATLAB/Simulink, including real meteorological data with daily variations for Fez, Morocco. The results prove that the system keeps the DC-link voltage within narrow limits of ± 3% and the battery SoC between 45% and 95%. Compared to similar works, the obtained result is much better. A simplified techno-economic analysis has also demonstrated that the system can supply energy at a competitive levelized cost (0.12 USD/kWh), making the proposed system an appealing and inexpensive alternative to diesel generators for remote rural areas. Overall, our findings reveal both technical strengths and economic potential of the proposed EMS, thus providing a practical pathway towards sustainable, off-grid electrification. By delivering a cost-effective and reliable energy solution, this work directly contributes to the United Nations Sustainable Development Goals, particularly Clean Water and Sanitation (SDG 6) by enabling power for water pumping and purification, Affordable and Clean Energy (SDG 7) and Climate Action (SDG 13), thus providing a practical pathway towards sustainable, off-grid electrification.</p>

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Stateflow-based hybrid PV/WT system with techno-economic assessment for off-grid electrification

  • Alpha Alhaji Bangura,
  • Mustapha Errouha,
  • Hicham Hihi,
  • Zakaria Chalh

摘要

The demand for energy is continuously increasing, while there is urgent pressure to reduce the amount of greenhouse gas emissions. With this in mind, renewable energy solutions have never been more needed. This paper presents a supervisory control approach developed to handle and balance power supply provided by a hybrid renewable energy system integrating wind turbines, solar panels, and battery storage. The proposed system not only promotes the integration of renewable energy sources and improves energy efficiency, but also contributes to environmental sustainability. A critical issue of the research consists of accurately regulating the DC bus voltage to ensure stability. In doing so, we have adopted a multi-layered, Stateflow-based control approach in which all the priorities of each energy source are clearly stated. By coordinating energy generation, storage, and distribution, our approach aims at improving the overall reliability. The system consists of a wind turbine equipped with a gearless permanent magnet synchronous generator (PMSG), a photovoltaic array, and a lithium-ion battery. Each of these will be dedicated to MPPT algorithms that will allow maximizing efficiency. To model and validate our system, we used MATLAB/Simulink, including real meteorological data with daily variations for Fez, Morocco. The results prove that the system keeps the DC-link voltage within narrow limits of ± 3% and the battery SoC between 45% and 95%. Compared to similar works, the obtained result is much better. A simplified techno-economic analysis has also demonstrated that the system can supply energy at a competitive levelized cost (0.12 USD/kWh), making the proposed system an appealing and inexpensive alternative to diesel generators for remote rural areas. Overall, our findings reveal both technical strengths and economic potential of the proposed EMS, thus providing a practical pathway towards sustainable, off-grid electrification. By delivering a cost-effective and reliable energy solution, this work directly contributes to the United Nations Sustainable Development Goals, particularly Clean Water and Sanitation (SDG 6) by enabling power for water pumping and purification, Affordable and Clean Energy (SDG 7) and Climate Action (SDG 13), thus providing a practical pathway towards sustainable, off-grid electrification.