A comprehensive study of renewable energy sources: Classifications, challenges and suggestions

Ang, Tze-Zhang; Salem, Mohamed; Jamil, Mohamad Kamarol Mohd; Das, Himadry Shekhar; Nazari, Mohammad Alhuyi; Prabaharan, Natarajan

doi:10.1016/j.esr.2022.100939

Cited by 172 publications

(66 citation statements)

References 224 publications

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“…Figure (1) shows the average of the daily values of G, T, RH, and TCO from April 2000 to December 2012, as we note that G, T, and TCO have the same pattern and change in the same way but RH changes in the opposite way. The data from 2000 to 2012 is used to derive the empirical equations, and they were:…”

Section: Resultsmentioning

confidence: 84%

“…Figure (2) shows the comparison between measured and estimated daily global solar radiation (G) for the data of 2013 as a new period, and table (1) represents the statistical indices for the models. We can note the great agreement between the measured (Gm) and estimated (Gd) values of daily global solar radiation, as R 2 was more than 0.92 in all models but it was near one in models 1 and 4. d and ME were close to one in the model 1, otherwise, MAE was close to zero for all models.…”

Section: Verification Of the Empirical Modelsmentioning

confidence: 99%

“…Solar radiation is the main driver of all the forces and phenomena that occur in the atmosphere and is also important for all biological processes that occur on the surface of the earth, and the demand for energy has increased in recent years and the sun is an important source of permanent energy, and Egypt has already built solar stations to generate electricity [1], [2]. Meteorological parameters are strongly affected by solar radiation, so they are useful in predicting missing values from the data series.…”

Section: Introductionmentioning

confidence: 99%

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Calculation of the Global Solar Radiation in a Subtropical Region (Qena, Egypt)

Haggagy¹,

Hassan²,

Allah³

et al. 2022

IJRPR

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Air temperature (T, °C), relative humidity (RH, %), and global solar radiation (G, MJ.m-2 ) have been measured in the meteorological station at South Valley University (SVU) at Qena, Egypt, from 2000 to 2013, while the total column ozone (TCO, DU) is downloaded from Giovanni's website. T, RH, and TCO are important meteorological parameters, and they are useful to estimate the missing data of the global solar radiation (G), as global solar radiation is desirable for electricity generation applications and for agriculture. Qena is a subtropical region in Upper Egypt, as it's characterized by clear weather most days of the year, and it's very hot in the summer and cold in the winter. The meteorological station at South Valley University (SVU) stopped measuring the G. The linear regression equation and the most important statistical indices are used in this paper such as, the determination coefficient (R2 ), the mean absolute error (MAE), the mean absolute bias error (MABE), the mean square error (MSE), the root mean square error (RMSE), the mean percentage error (MPE), the mean bias error (MBE), the model efficiency (ME), and the agreement index (d). For verification of the empirical models' efficiency, the data of a new period has used, 2013, and the results of the models were excellent and valid for estimating the missing data, as R2 was more than 0.92 in all models but it was near one in models 1 and 4. MAE was close to zero for all models. MBE, MPE, and MABE were close to zero for all models except model 3. Model 1 was the best one, as, R2 , MAE, MABE, MSE, RMSE, MAPE, d, ME, and MPE were 0.9883, 0.0193, 0.383, 0.2303, 0.4799, 1.927, 0.9979, 0.992, and 0.2932, respectively

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Section: Resultsmentioning

confidence: 84%

Section: Verification Of the Empirical Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Calculation of the Global Solar Radiation in a Subtropical Region (Qena, Egypt)

Haggagy¹,

Hassan²,

Allah³

et al. 2022

IJRPR

View full text Add to dashboard Cite

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“…The stability of the power grid system can be affected by the integration of the wind energy system [57][58][59]. Wind energy generation is achieved through a wind energy conversion system (WECS), the four categories of generators used for variable wind speed conversion in wind energy systems are electrically excited synchronous generators (EESG), squirrel-cage induction generators (SCIG), permanent magnet synchronous generators (PMSG), and doubly fed induction generators (DFIG) [60]. However, compared with EESG and SCIG, DFIG and PMSG have gained greater attention due to their higher energy conversion efficiency and quick control capability.…”

Section: Windmentioning

confidence: 99%

Solar, Wind and Their Hybridization Integration for Multi-Machine Power System Oscillation Controllers Optimization: A Review

et al. 2022

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Massive growth in global electrical energy demand has necessitated a genuine exploration and integration of solar and wind energy into the electrical power mix. This incorporation goes a long way in improving the cumulative generated power capacity of the power system. However, wind and solar photovoltaic (PV) are intermittent in nature, making the provisioning of a good maximum power tracking (MPPT) scheme necessary. Furthermore, the integration is characterized by synchronization challenges and introduces various modes of power system oscillations as it is converter-driven. This greatly affects the overall stability of the integrated power mix. Consequently, various technological models have been designed to address these challenges ranging from MPPT schemes, phase-lock loop (PLL), virtual synchronous generator (VSG), power system stabilizers (PSS), flexible AC transmission system (FACTS), coordinated control and artificial intelligence (AI). In this work, a multi-machine power system model is reviewed for integration stability studies. Various technical solutions associated with the integration are also reviewed. MPPT, PLL, VSG, PSS, FACTS, coordinated control, and various optimization technique schemes used for damping controller design are discussed.

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“…Over time, the issue of the high cost of new technologies slowed down the transition to renewables. But in the last 10 years, the maturity in technological advancement has tremendously reduced the cost of renewables to even surpass hydropower (Ang et al, 2022). To effectively reduce carbon emissions in the environment, a robust alternative fuel is needed to replace fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Insights into the recent advances in the pretreatment of biomass for sustainable bioenergy and bio-products synthesis: Challenges and future directions

Ifeanyi-Nze¹,

Charles

2023

EUR J SUSTAIN DEV RES

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Recently, biomass has shown its viability as an alternative to fossil fuels. Due to the growing trend in greenhouse gas emissions generated by the continual burning of fossil fuel products, it will be advantageous for humanity to seek a more sustainable and renewable source of energy. Due to its availability, biomass has a promising approach as a feedstock for bioconversion processes that produce energy, fuels, and other chemicals. The carbon dioxide generated by burning biomass has no influence on atmospheric carbon dioxide since it is derived from a renewable source. Despite these benefits, its adoption in bioconversion and biorefinery processes has traditionally been hindered by its recalcitrant nature, as indicated by its intrinsic characteristics. Prior to any conversion process, biomass must be pretreated to enhance product recovery. To satisfy the rising need for renewable and sustainable energy sources, the present conversion efficiency must be improved and the biorefinery concept must transition from using just one biomass component (cellulose) to utilizing the complete biomass component. This study examines numerous pretreatment procedures used prior to any conversion process, the challenges faced, and the future of biomass pretreatment technologies. Physical, hydrothermal, chemical, oxidation, biological, and hybrid pretreatment techniques are evaluated. The review indicates that the ideal approach to biomass pretreatment must be able to deal with the recalcitrant nature of biomass, enhance the crystallinity of cellulose, and provide the greatest recovery of biofuels, bio-char, sugars, and other industrially relevant bioproducts. The data offered in this study will equip readers with the knowledge necessary to effectively identify solutions to pretreatment problems and energy generation from pretreated biomass.

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A comprehensive study of renewable energy sources: Classifications, challenges and suggestions

Cited by 172 publications

References 224 publications

Calculation of the Global Solar Radiation in a Subtropical Region (Qena, Egypt)

Calculation of the Global Solar Radiation in a Subtropical Region (Qena, Egypt)

Solar, Wind and Their Hybridization Integration for Multi-Machine Power System Oscillation Controllers Optimization: A Review

Insights into the recent advances in the pretreatment of biomass for sustainable bioenergy and bio-products synthesis: Challenges and future directions

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