Simplified Model for Optimal Sizing of the Off-Grid PV System Regarding Value of Loss of Load Probability

Topić, Danijel; Knežević, Goran; Kosić, Daniel; Perko, Jurica

doi:10.17559/tv-20171203150754

Cited by 5 publications

(5 citation statements)

References 13 publications

(14 reference statements)

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“…The 5d bands of Ce 3+ in YAM are located particularly favorably for down-conversion for solar cells. The energy of the lower 5d 1 of Ce 3+ at about 25,200 cm −1 (which corresponds to the wavelength of 397 nm) gives a chance of two-photon cooperative down-conversion to two Yb 3+ ions ( 2 F 5/2 levels with the energy of 10,000 cm −1 or approximately 1 µm) to take place. This location of the 5d band also allows for absorption of part of solar spectral irradiance, which carries a useful amount of energy, but is also inefficiently used by a typical crystalline silicon solar cell.…”

Section: Resultsmentioning

confidence: 99%

“…The enhanced efficiency of photovoltaic devices, in the 300-500 nm spectral range, would improve the performance of devices operating under diffused solar irradiation. This feature makes the idea of solar spectrum converters particularly important for off-grid systems, as it would improve their performance under overcast and low irradiance conditions, improving their reliability and decreasing the probability of loss of load [1].…”

Section: Introductionmentioning

confidence: 99%

“…Excitation and emission spectra of Ce 3+ -only activated YAM samples.The 5d bands of Ce 3+ in YAM are located particularly favorably for down-conversion for solar cells. The energy of the lower 5d1 of Ce 3+ at about 25,200 cm −1 (which corresponds to the wavelength of 397 nm) gives a chance of two-photon cooperative down-conversion to two Yb 3+ ions ( 2 F5/2 levels with the energy of 10,000 cm −1 or approximately 1 µ m) to take…”

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confidence: 99%

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Down-Shifting in the YAM: Ce3+ + Yb3+ System for Solar Cells

et al. 2021

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In this work, we investigate Ce3+ to Yb3+ energy transfer in Y4Al2O9 (YAM) for potential application in solar spectrum down-converting layers for photovoltaic devices. Photoluminescence properties set, of 10 samples, of the YAM host activated with Ce3+ and Yb3+ with varying concentrations are presented, and the Ce3+ to Yb3+ energy transfer is proven. Measurement of highly non-exponential luminescence decays of Ce3+ 5d band allowed for the calculation of maximal theoretical quantum efficiency, of the expected down-conversion process, equal to 123%. Measurements of Yb3+ emission intensity, in the function of excitation power, confirmed the predominantly single-photon downshifting character of Ce3+ to Yb3+ energy transfer. Favorable location of the Ce3+ 5d bands in YAM makes this system a great candidate for down-converting, and down-shifting, luminescent layers for photovoltaics.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Down-Shifting in the YAM: Ce3+ + Yb3+ System for Solar Cells

et al. 2021

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“…These renewable energy sources are often connected to the conventional power system through the distribution network near the loads; thus, no transmission system is needed. In such a case, these are referred to as distributed generation systems [3]. Distributed generation can negatively impact the performance of the distribution network as the distribution network will no longer operate with a unidirectional power flow pattern [4].…”

Section: Introductionmentioning

confidence: 99%

Energy Management Strategy for DC Micro-Grid System with the Important Penetration of Renewable Energy

Ndeke,

Adonis,

Almaktoof

2024

Applied Sciences

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This paper presents an energy management strategy using a Stateflow controller related to DC microgrids with the important penetration of renewable energy. The increase in world electricity demand is one of the principal drivers of the exhaustion of fossil fuels and increased greenhouse gas emissions. To solve these problems, several countries have adopted actions for widespread renewable energy deployment, which includes wind energy, solar power, biomass power, tidal, and hydropower. These sources are considered as significant in delivering clean energy and reducing greenhouse gas emissions for sustainable improvement. As these sources play an increasingly vital role in the global energy landscape, the efficient management of these intermittent sources is essential for grid stability and sustainability. This paper aimed to develop an energy management strategy for DC microgrids to supply power to a DC microgrid system. The main objective of this paper was to implement an energy management system to ensure the proper operation of DC microgrid systems utilizing Simulink blocks available in MATLAB/Simulink 2020b software. The simulation results demonstrated that the developed energy management algorithm was unconditionally reliable, ensuring the proper operation of the microgrid systems. Additionally, the results demonstrated that the energy management strategy exhibited robust performance across different scenarios, effectively balancing energy generation and consumption while ensuring the reliable operation of the microgrid system. Moreover, the developed algorithm model presents another advantage, as it enables users to access and to change any control parameters within the DC microgrid. By comparing these results with the literature, the developed energy management algorithm provides safety and the automatic control of the microgrid.

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“…These renewable energy sources are often connected to the conventional power system through the distribution network near the loads, thus no transmission system is needed. In such a case, these are referred to as distributed generation systems [3]. Distributed generation can impact negatively on the performance of the distribution network as the distribution network will no longer operate with a unidirectional power flow pattern [4].…”

Section: Introductionmentioning

confidence: 99%

Energy Management Strategy for Dc Micro-grid System With an Important Penetration of Renewable Energy

Bipongo,

Adonis,

Almaktoof

2023

Preprint

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This paper presents an energy management strategy using stateflow controller related to DC micro-grids with an important penetration of renewable energy. The increase in world electricity demand is one of the principal drivers of the exhaustion of fossil fuels and expanded greenhouse gas emissions. To solve these problems, several countries have adopted actions for large renewable energy deployment, which includes wind energy, solar power, biomass power, tidal, and hydropower. These sources are considered as significant in delivering clean energy and reducing greenhouse gas emissions for sustainable improvement. In such a case, these are referred to as distributed generation systems. Distributed generation can impact negatively on the performance of the distribution network as the distribution network will no longer operate with a unidirectional power flow pattern. To address these issues, micro-grids are being used as a platform to integrate distributed generation systems, as they provide significant benefits to end-users and to the distribution network. The objective of this paper was to implement an energy management system to ensure the proper operation of the developed DC microgrid and this was developed using Simulink blocks available in the MATLAB/Simulink software. The simulation results shown that this control strategy is unconditionally reliable to ensure proper operation of the microgrid systems. Moreover, the developed algorithm model presents another advantage, which enables the users to access and to change any control parameters within the DC microgrid. By comparing these results with the literature, the developed energy management algorithm provides safety and automatic control of the microgrid.

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Simplified Model for Optimal Sizing of the Off-Grid PV System Regarding Value of Loss of Load Probability

Cited by 5 publications

References 13 publications

Down-Shifting in the YAM: Ce3+ + Yb3+ System for Solar Cells

Down-Shifting in the YAM: Ce3+ + Yb3+ System for Solar Cells

Energy Management Strategy for DC Micro-Grid System with the Important Penetration of Renewable Energy

Energy Management Strategy for Dc Micro-grid System With an Important Penetration of Renewable Energy

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