Applied Solar Energy最新文献_第10页

Fault Detection in Photovoltaic Systems Using Optimized Neural Network 基于优化神经网络的光伏系统故障检测

IF 1.204

Applied Solar Energy Pub Date : 2023-10-08 DOI: 10.3103/S0003701X22600850

Partha Kayal, Abdul Vasih T. V.

{"title":"Fault Detection in Photovoltaic Systems Using Optimized Neural Network","authors":"Partha Kayal,  Abdul Vasih T. V.","doi":"10.3103/S0003701X22600850","DOIUrl":"10.3103/S0003701X22600850","url":null,"abstract":"Fault detection in photovoltaic (PV) arrays is one of the prime challenges for the operation of solar power plants. This paper proposes an artificial neural network (ANN) based fault detection approach. Partial shading, line-to-line fault, open circuit fault, short circuit fault, and ground fault in a PV array have been investigated, and a data set is synthesized to evaluate the impact on maximum power amplitude and number of power peaks under various exposure of irradiance and temperature. The ANN model has been trained considering irradiance, temperature, maximum power, and the number of power peaks corresponding to the different faulty conditions and non-fault situations. The considered ANN model has been optimized in order to increase the accuracy of fault identification. A particle swarm optimization-based algorithm has been employed to find the optimum number of neurons in the hidden layers to achieve the highest possible prediction accuracy on the test data set. The performance of the optimized neural network has been further cross-validated by an arranged data set containing all the types of faulty conditions. The effectiveness of the proposed technique is verified by comparing the results with existing methods.","PeriodicalId":475,"journal":{"name":"Applied Solar Energy","volume":null,"pages":null},"PeriodicalIF":1.204,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41088847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structure of Ag-Containing Cu2ZnSnS4 Thin Films, Obtained by Spray Pyrolysis 喷雾热解法制备含银Cu2ZnSnS4薄膜的结构

IF 1.204

Applied Solar Energy Pub Date : 2023-10-08 DOI: 10.3103/S0003701X23600790

A. A. Zgliui, M. S. Tivanov, N. N. Curmei, L. V. Dermenji, L. I. Bruc, D. A. Serban

引用次数: 0

Design and Development of Novel Nanostructured Visible-Light Active Photoelectrodes based on TiO2 Nanorods for Solar Hydrogen Generation 基于TiO2纳米棒的新型太阳能制氢可见光活性纳米电极的设计与开发

IF 1.204

Applied Solar Energy Pub Date : 2023-10-08 DOI: 10.3103/S0003701X23600339

U. A. Shaislamov, A. S. Esbergenova, K. Mukimov, O. N. Ruzimuradov

引用次数: 0

Enhancing Solar Inverter Performance for both Stand-Alone and Grid Connected Systems 提高独立系统和并网系统的太阳能逆变器性能

IF 1.204

Applied Solar Energy Pub Date : 2023-10-08 DOI: 10.3103/S0003701X22601259

Md. Ehtesham, Mohmmad Ahmad, Sheeraz Kirmani, Majid Jamil

{"title":"Enhancing Solar Inverter Performance for both Stand-Alone and Grid Connected Systems","authors":"Md. Ehtesham, Mohmmad Ahmad, Sheeraz Kirmani, Majid Jamil","doi":"10.3103/S0003701X22601259","DOIUrl":"10.3103/S0003701X22601259","url":null,"abstract":"This paper presents a detailed performance analysis of multilevel inverter for both stand-alone and grid connected PV systems. Here, converter circuit is not only tested for parameters like total harmonic distortion (THD), power output and system efficiency by connecting the non-linear load but the variations of power factor is also considered which is not found commonly. First the simulated results for THD, power output and efficiency are tabulated with variation of load power factor individually for both systems and best operating power factor is found with respect to distortions and efficiency respectively. For Stand-alone system, circuit efficiency as high as 96.8% is achieved when operated at 0.85 power factor. Then the analytical analysis has been carried out for grid connected system where efficiency of 84.3% is achieved for 60o grid phase angle and 75.8% for 10o and thus proposing operation at higher grid phase angle. Harmonic components have been further reduced and brought below 5% level by means of passive filters. Finally, to validate the proposed outcome, simulated results have been compared with analytical results and corresponding plots have been shown.","PeriodicalId":475,"journal":{"name":"Applied Solar Energy","volume":null,"pages":null},"PeriodicalIF":1.204,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41088830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of Dynamic Wind Shear Coefficient to Characterize Best Fit of Wind Speed Profiles under Different Conditions of Atmospheric Stability and Terrains for the Assessment of Height-Dependent Wind Energy in Libya 估算动态风切变系数，以确定不同大气稳定性和地形条件下风速剖面的最佳拟合度，用于评估利比亚的高度依赖性风能

IF 1.204

Applied Solar Energy Pub Date : 2023-10-08 DOI: 10.3103/S0003701X23600212

A. Abdalla, W. El-Osta, Y. F. Nassar, W. Husien, E. I. Dekam, G.M. Miskeen

{"title":"Estimation of Dynamic Wind Shear Coefficient to Characterize Best Fit of Wind Speed Profiles under Different Conditions of Atmospheric Stability and Terrains for the Assessment of Height-Dependent Wind Energy in Libya","authors":"A. Abdalla, W. El-Osta, Y. F. Nassar, W. Husien, E. I. Dekam, G.M. Miskeen","doi":"10.3103/S0003701X23600212","DOIUrl":"10.3103/S0003701X23600212","url":null,"abstract":"Assessment of wind potential at a certain site requires an accurate estimate of wind speed at different heights other than that at the measured altitudes. Extrapolating wind data is affected, among other parameters, by the spacing height of the measured wind data. An estimate of the wind shear coefficient (WSC) is needed in order to develop the predicted wind speed profile. In this paper, the effect of spacing height of wind speed measurements on the WSC estimation is investigated using the power-law model, while taking into consideration the effect of the atmospheric stability. Estimation of WSC that would give the nearest value of the extrapolated wind speed to the measured value was performed at three different terrains and promising wind farm locations in Libya. The obtained results indicate the undeniable fact that WSC depends on time, altitude and the spacing height. The value of WSC of the lower measuring spacing height of 20–40 m gives best estimate to wind speed profiles for all atmospheric stability conditions for the two southern cities, while the second spacing height (40–60 m) gave best estimate of wind speed profile for the coastal site. Adopting the proposed WSC instead of the value of seventh in wind potential assessments, leads to an increase in the productivity of wind turbines at rates of 8 and 16% at hub heights of 50 and 100 m, respectively. This in turn will reduce the levelized cost of energy (LCOE) and enhance the competitiveness of wind energy in the energy market.","PeriodicalId":475,"journal":{"name":"Applied Solar Energy","volume":null,"pages":null},"PeriodicalIF":1.204,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41088835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analysis of Energy Performance of Nanofluid-Based Spectral Splitting Photovoltaic/Thermal Collectors of Different Designs 不同设计的基于纳米流体的光谱分裂光伏/集热器的能量性能分析

IF 1.204

Applied Solar Energy Pub Date : 2023-10-08 DOI: 10.3103/S0003701X2360039X

Guoqing Yu, Linghao Dai, Lin Gu

{"title":"Analysis of Energy Performance of Nanofluid-Based Spectral Splitting Photovoltaic/Thermal Collectors of Different Designs","authors":"Guoqing Yu, Linghao Dai, Lin Gu","doi":"10.3103/S0003701X2360039X","DOIUrl":"10.3103/S0003701X2360039X","url":null,"abstract":"Nanofluid-based spectral splitting photovoltaic/thermal (SSPV/T) system is an emerging means of achieving full-spectrum utilization of solar energy. In this paper, one-dimension models for nanofluid-based spectral splitting photovoltaic/thermal collectors designs are presented and validated by the experimental results. The energy performance of SSPV/T collectors of different structural designs is analyzed and compared with conventional collectors. The results show that for SSPV/T or conventional photovoltaic/thermal collectors, an insulated cover is very important, especially for thermal efficiency. The thermal efficiency of Design C (cover-insulated SSPV/T) is nearly four times of Design A (non-cover-insulated SSPV/T), while the electrical efficiency is only reduced by 0.7%. The analysis indicates that at present technologies, the spectral splitting PV/T collectors have no obvious advantages than conventional PV/T collectors whether for non-cover-insulated or cover-insulated PV/T collectors. Additionally, Design F (conventional cover-insulated PV/T with low-e coating) performs better than Design C (cover-insulated SSPV/T), low-e coating (high transmittance) is very promising in improving PV/T thermal efficiency.","PeriodicalId":475,"journal":{"name":"Applied Solar Energy","volume":null,"pages":null},"PeriodicalIF":1.204,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41088869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biogas Production based on Thermophilic Methanogenic Fermentation of Chicken Manure 基于鸡粪嗜热甲烷发酵的沼气生产

IF 1.204

Applied Solar Energy Pub Date : 2023-10-01 DOI: 10.3103/s0003701x23601874

引用次数: 0

Analysis of Degradation and Performance Changes of the Pap-Namangan Solar Photovoltaic Plant Pap-Namangan 太阳能光伏发电厂的退化和性能变化分析

IF 1.204

Applied Solar Energy Pub Date : 2023-10-01 DOI: 10.3103/s0003701x23601497

引用次数: 0

A Review of Photovoltaic Cell Generations and Simplified Overview of Bifacial Photovoltaic Cell Technology 光伏电池世代回顾和双面光伏电池技术简述

IF 1.204

Applied Solar Energy Pub Date : 2023-10-01 DOI: 10.3103/s0003701x23600911

{"title":"A Review of Photovoltaic Cell Generations and Simplified Overview of Bifacial Photovoltaic Cell Technology","authors":"","doi":"10.3103/s0003701x23600911","DOIUrl":"https://doi.org/10.3103/s0003701x23600911","url":null,"abstract":" <h3>Abstract</h3> Throughout this article, we explore several generations of photovoltaic cells (PV cells) including the most recent research advancements, including an introduction to the bifacial photovoltaic cell along with some of the aspects affecting its efficiency. This article focuses on the advancements and successes in terms of the efficiencies attained in many generations of photovoltaic cell and discusses the challenges of each generation. Monocrystalline silicon dominates the solar cell market, and other technologies are still being developed in order to commercialize them. As an illustration, recent solar cell technology, known as the fourth generation and containing graphene, has been discussed. To determine if the damaged solar panel pieces would function or not, a test was conducted, it showed that even after being cut into small pieces, the open circuit voltage had not changed. The bifacial photovoltaic technology has been briefly reviewed in the review, including the substrates used, cell texturing, antireflection coating, cell reflectors, etc. Bifacial photovoltaic (PV) performance will continue to profit from studies on higher conversion efficiencies linked to monofacial PV cells. It is important to do studies within the area of bifacial PV modules in order to boost their performance, efficiency, and market value globally. ","PeriodicalId":475,"journal":{"name":"Applied Solar Energy","volume":null,"pages":null},"PeriodicalIF":1.204,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140033567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the Sb/Se Ratio on the Structural and Electrical Properties of SbxSey Films 锑/硒比对锑/硒薄膜结构和电气性能的影响

IF 1.204

Applied Solar Energy Pub Date : 2023-10-01 DOI: 10.3103/s0003701x23600959

引用次数: 0