Assessment of a Hybrid (Wind-Solar) System at High-Altitude Agriculture Regions for achieving Sustainable Development Goals

The implementation of a decentralized energy system has the potential to improve the life quality of the people who live in remote rural areas with limited or nonexistent power sources. Renewable energy technologies can be very important in the production of power. The main purpose of this study is to assess Jeje, Nigeria's wind energy potential, using a reanalysis and analysis dataset. To this aim, data on wind speed at a height of 10 m were gathered from a variety of sources, including EAR5, EAR5 Ag, EAR5 Land, CFSR, and MERRA-2. The Weibull distribution function, commonly employed to evaluate wind energy potential, was utilized. A maximum wind power density value of 15.75 W/m2 was obtained when the MERRA-2 dataset was implemented. The results indicate that large-scale wind turbines are not a viable alternative in this area. Thus, the performance of six wind turbines, expressed by output power with a cut in speed ranging between 1 and 1.5 m/s, was investigated. The results demonstrated that the AWI-E1000T is the most efficient wind turbine under consideration. In addition, it has been shown that each considered turbine can be installed in this area based on the data acquired from the MERRA-2 and CFSR.

Assessment of Wind Energy Potential for achieving Sustainable Development Goal 7 in the Rural Region of Jeje, Nigeria

Kassem,

Camur,

Apreala

2024

A Techno-Economic Feasibility Study of Electricity and Hydrogen Production in Hybrid Solar-Wind Energy Park. The Case Study of Tunisian Sahel

Farhani,

Barhoumi,

Grissa

et al. 2024

This paper provides a comprehensive analysis of the potential for integrating renewable energy sources to meet the growing electricity and hydrogen demand in the Tunisian Sahel region, focusing particularly on solar and wind energies. The feasibility of installing a hybrid solar-wind energy system capable of producing both electricity and hydrogen is evaluated. With the help of the available solar and wind resources combined, the system not only generates electric power, but also produces hydrogen gas through electrolyzation, hence offering a multipurpose solution in terms of storage and supply. This flexibility is crucial due to the variability of renewable resources, which change daily and seasonally. The paper outlines the optimization process for designing the hybrid system deploying HOMER Pro software, according to local climatic conditions and demand profiles. The economic analysis reveals that the system can produce an average of 101.8 kg of hydrogen daily with a total photovoltaic capacity of 3,000 kWp, resulting in a project net cost estimation of approximately 5,494,912 euros. This analysis provides valuable insights for stakeholders considering similar projects, including the costs associated with photovoltaic systems, electrolyzers, and hydrogen storage solutions.

Control of Grid-connected Inverter using Carrier Modulation

Tran

2024

Multilevel inverters are becoming prevalent due to their remarkable attributes, including their ability to withstand high voltage shocks and accommodate high capacity. As a result, they find extensive applications in grid-connected inverter systems utilizing photovoltaic (PV) panels and electric drive systems for electric motors. However, their power quality is heavily reliant on current controls and inverter modulation techniques. Conventional modulation methods typically employ fixed frequency carriers for inverter modulation, lacking inherent control signal information. In response to this challenge, this study proposes a novel modulation method for grid-connected multilevel inverters utilizing frequency and phase-modulated carriers. The study findings demonstrate the effectiveness of the proposed approach in the nominal operation, showcasing a reduction in Total Harmonic Distortion (THD) by 15.92% and a 48.5% decrease in the highest individual harmonic amplitude compared to the conventional method using the modulation of phase opposite disposition. Moreover, the switching count is also decreased by 26.37%.