Design and performance analysis of stand-alone PV system at Al-Nahrain University, Baghdad, Iraq

Mahmood, Anas Lateef; Shakir, Amina Mahmoud; Numan, Bahaa Abdulkhaliq

doi:10.11591/ijpeds.v11.i2.pp921-930

Cited by 14 publications

(13 citation statements)

References 9 publications

(10 reference statements)

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“…Firstly, the system obtains the comment information of the film as the initial corpus, then saves it as the training corpus after preprocessing the film information, and then enters the text analysis stage, including the training and classification of the model. e output is the trained text tendency classification model, shows the accuracy of the model through the display interface, and provides the interface to demonstrate the judgment of the tendency of the text [25]. According to the overall process of the system described above, the overall framework of the system is designed as shown in Figure 3.…”

Section: Overall Framework Design Of Text Tendency Analysismentioning

confidence: 99%

English Text Analysis System Based on Genetic Algorithm

Yao

2022

Mobile Information Systems

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In order to accurately extract the useful information in English, this paper studies English text analysis combined with a genetic algorithm and establishes a text analysis system. In this method, a text tendency analysis algorithm based on a genetic algorithm language model is proposed, and a Doc2vec text feature representation algorithm integrating the LDA model is designed; the parallelization technology of text analysis algorithm is studied, and the parallelization model of the algorithm by using spark big data platform is designed; the process of English text tendency analysis is studied, and a Chinese text analysis system is designed and implemented based on big data platform, including corpus intake, corpus annotation, corpus storage, model training, model verification, and other modules. In order to verify the feasibility of this subject, the accuracy of the Doc2vec text feature representation algorithm of the fused LDA model designed in the prototype system is tested. The experimental results show that the fused text representation model has high recognition degree, and the AUC value of the ROC curve reaches 0.95. At the same time, this paper tests the text analysis-related algorithms involved in the system. The test results show that the parallel algorithm can greatly improve the efficiency of the system.

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Section: Overall Framework Design Of Text Tendency Analysismentioning

confidence: 99%

English Text Analysis System Based on Genetic Algorithm

Yao

2022

Mobile Information Systems

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“…So a stand-alone PV system was taken as an example to solve the partial shading problem with (2x10 PV array). The F-4112-3 PV module is used in this document is cadmium telluride (CdTe), which has a low temperature and shade damage [2] [10]. The electrical specifications of the CdTe F-4112-3 PV module are illustrated in Table 1.…”

Section: A Photovoltaic Systemmentioning

confidence: 99%

“…The interest in the generation of clean energy is increasing in renewables and solar photovoltaic (PV) energy sources, particularly in regions with electric generation troubles [1] [2]. Solar PV systems are regarded as an ideal alternative among all renewable energy resources because they are amazingly powerful, have no noise, and are emission-free in nature.…”

Section: Introductionmentioning

confidence: 99%

Solar Photovoltaic Array Reconfiguration for Reducing Partial Shading Effect

Khaleel¹,

Mahmood²

2021

AJCT

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In the photovoltaic (PV) system some problems happen causes a substantial reduction in power generation, one of these problems are Partial shading (PS), and (PS) happen when some obstacles block the sun's rays on the photovoltaic (PV) cells in a PV array, panel, or module in the PV system. Therefore, this paper suggests a method for reducing the effects of partial shading and increasing output power by reconfiguring a solar photovoltaic array using a new shade dispersion strategy (NSDS). The improvements achieved in maximum power point MPP when the shadows are angled or have a significant size, NSDS is also suitable for any photovoltaic array size. The simulation in this study was done by using MATLAB-software Simulink. Different shapes for shades were taken like Short and Wide (SW), Short and Narrow (SN), Long and Wide (LW), and Long and Narrow (LN) partial shading in addition to diagonal shade (DI). The suggested method was used on 6x3 photovoltaic panels to solve the partial shadow problem that cannot be solved by some previous shadow dispersion methods like so du Ku and stepwise. Also, it is applied to a 4x2 PV array which is considered difficult to spread the shadows to all PV panels because of its small size. Analysis and comparisons of the output characteristic were done using Cadmium telluride (CdTe) F-4112-3 PV panels and it was found that the increment in the generated power is more than 30% in comparison with the typical series-parallel (SP) for the SW and LW shades while it is more than 30% and 20% in comparison with the Total-Cross-Tied (TCT) configuration for the SW and LW shades respectively.

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“…Few researchers analyze the importance of the PV system location which depends on bifacial PV array in Iraq. They studied the effect of tilt angle, irradiation, and temperature change on the back to back monofacial panel at Baghdad city [10], while a stand-alone monofacial PV system with and without shading at performance is analyzed in [11]- [13]. Other researchers have studied the performance of the photovoltaic monofacial in Al-Najaf [14].…”

Section: Introductionmentioning

confidence: 99%

An optimum location of on-grid bifacial based photovoltaic system in Iraq

Shakir

Yousif

Mahmood

2022

IJECE

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Bifacial photovoltaic (PV) module can gain 30% more energy compared to monofacial if a suitable location were chosen. Iraq (a Middle East country) has a variable irradiation level according to its geographic coordinates, thus, the performance of PV systems differs. This paper an array (17 series, 13 parallel) was chosen to produce 100 kWp for an on-grid PV system. It investigates the PV system in three cities in Iraq (Mosul, Baghdad, and Basrah). Effect of albedo factor, high and pitch of the bifacial module on energy yield have been studied using PVsyst (software). It has been found that the effect is less for a pitch greater than 6 m. The energy gained from bifacial and monofacial PV system module in these cities shows that Mosul is the most suitable for installing both PV systems followed by Baghdad and lastly Basrah. However, in Basrah, the bifacial gain is 12% higher in the energy than monofacial as irradiation there is higher than the other locations, especially for elevation above 1.5 m. Moreover, the cost of bifacial array is 7.23% higher than monofacial, but this additional cost is acceptable since the bifacial gain is about 11.3% higher energy compared to the monofacial.

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Design and performance analysis of stand-alone PV system at Al-Nahrain University, Baghdad, Iraq

Cited by 14 publications

References 9 publications

English Text Analysis System Based on Genetic Algorithm

English Text Analysis System Based on Genetic Algorithm

Solar Photovoltaic Array Reconfiguration for Reducing Partial Shading Effect

An optimum location of on-grid bifacial based photovoltaic system in Iraq

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