Comparative Analysis of Crystalline and Double-Junction Amorphous Silicon Modules Performance in Outdoor Conditions

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
Cristina Cornaro ◽  
Davide Musella
Keyword(s):  
Amorphous Silicon ◽  
Weather Conditions ◽  
Outdoor Exposure ◽  
Complete Characterization ◽  
Performance Comparison ◽  
Performance Ratio ◽  
Energy Yield ◽  
Pv Modules ◽  
Double Junction ◽  
And Performance

The paper deals with an extensive photovoltaic (PV) modules monitoring activity carried out at the outdoor station ESTER (Solar Energy TEst and Research) of the University of Rome Tor Vergata, Italy. The purpose of the work was to evaluate and compare the performance of PV silicon modules of polycrystalline (poli-Si) and amorphous (a-Si) technologies during a medium-term outdoor exposure at optimized tilt angle, facing south. Two PV modules, one polycrystalline silicon and one double-junction amorphous silicon, have been exposed since May 2009 until Oct. 2010. A complete characterization of the weather conditions at the site during the test has been performed, and the most relevant parameters for the performance comparison of the two technologies have been derived. In order to compare different technologies and power productions, the energy yield (Y) and performance ratio (PR) for the two modules have been evaluated on a monthly and yearly basis. The typical seasonal trend of PR has been observed for the polycrystalline module, essentially due to the temperature influence on the module performance. For the a-Si module, instead, a degradation trend has been observed for the first months of operation. Subsequently, a significant recovery in the PR and energy production has been registered.

scholarly journals Comparative Analysis of Ground-Mounted vs. Rooftop Photovoltaic Systems Optimized for Interrow Distance between Parallel Arrays

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3639
Author(s):  
Ahmed Bilal Awan ◽  
Mohammed Alghassab ◽  
Muhammad Zubair ◽  
Abdul Rauf Bhatti ◽  
Muhammad Uzair ◽  
...  
Keyword(s):  
Performance Comparison ◽  
Performance Ratio ◽  
Energy Output ◽  
Energy Yield ◽  
Pv System ◽  
Utilization Factor ◽  
Pv Systems ◽  
Pv Modules ◽  
Mutual Shading ◽  
Land Cost

The aim of this research is to perform an in-depth performance comparison of ground-mounted and rooftop photovoltaic (PV) systems. The PV modules are tilted to receive maximum solar irradiance. The efficiency of the PV system decreases due to the mutual shading impact of parallel tilted PV modules. The mutual shading decreases with the increasing interrow distance of parallel PV modules, but a distance that is too large causes an increase in land cost in the case of ground-mounted configuration and a decrease in roof surface shading in the case of rooftop configuration, because larger sections of roof are exposed to sun radiation. Therefore, an optimized interrow distance for the two PV configurations is determined with the aim being to minimize the levelized cost of energy (LCoE) and maximize the energy yield. The model of the building is simulated in EnergyPlus software to determine the cooling load requirement and roof surface temperatures under different shading scenarios. The layout of the rooftop PV system is designed in Helioscope software. A detailed comparison of the two systems is carried out based on energy output, performance ratio, capacity utilization factor (CUF), energy yield, and LCoE. Compared to ground-mounted configuration, the rooftop PV configuration results in a 2.9% increase in CUF, and up to a 23.7% decrease in LCoE. The results of this research show that installing a PV system on a roof has many distinct advantages over ground-mounted PV systems such as the shading of the roof, which leads to the curtailment of the cooling energy requirements of the buildings in hot regions and land cost savings, especially for urban environments.

scholarly journals Techno-Economic Analysis and Performance Evaluation of 25 MW Solar PV Power Plant in Actual Environmental Condition in India

2019 ◽  
Vol 8 (6S) ◽  
pp. 659-669
Keyword(s):  
Outdoor Exposure ◽  
Climatic Conditions ◽  
Energy Yield ◽  
Solar Pv ◽  
Degradation Analysis ◽  
Pv Modules ◽  
And Performance ◽  
Utility Scale ◽  
Scale Grid ◽  
Moisture Ingression

This paper presents study, identification and evaluation of causes and impact of various degradation modes and environmental conditions on performance of a utility scale grid connected solar PV plant located in remote location in India. Degradation of solar PV modules results in considerable loss in energy yield of overall estimated plant generation. The research includes degradation analysis of 25 MW Roha Dyechem amorphous Si solar PV plant, Charanka, Patan, Gujarat under varying climatic conditions. Some of the well qualified modules were found to degrade in outdoor exposure for more than 7 years. Glass breakage, hot spots, backsheet puncture, micro-delamination, corrosion of cell edges, snail trails, Digital Process Control Board (DPCB) failure, moisture ingression, soiling losses etc. were among the main faults observed in fielded PV modules. A comparative analysis is presented between the simulated, computed and practically measured and recorded field data for drawing important conclusions.

scholarly journals A study on the reliability and performance of solar powered street lighting systems

2017 ◽  
Vol 5 (2) ◽  
pp. 110 ◽  
Author(s):  
Adebayo Fashina ◽  
Salifu Azeko ◽  
Joseph Asare ◽  
Chukwuemeka Ani ◽  
Vitalis Anye ◽  
...  
Keyword(s):  
Performance Indicators ◽  
Performance Ratio ◽  
Energy Yield ◽  
Street Lighting ◽  
Technical Performance ◽  
Humid Environment ◽  
Total Failure ◽  
Lighting Systems ◽  
And Performance ◽  
Solar Powered

This paper presents the results of a study on the reliability and performance of the solar-powered street lighting systems installed at the African University of Science and Technology (AUST) in Nigeria, a hot and humid environment. The technical performance of the systems was studied using the following performance indicators: system energy yield, capture loss, as well as the system performance ratio while the reliability of the systems was examined using a model developed from the findings from the maintenance and fault diagnosis of the systems. The model was used to predict the total failure and survival probability of the systems using the Weibull distribution. The performance evaluation during the monitored period (February 2012 to January 2015) indicated that the performance ratios of the systems vary from 70% to 89% and the energy yields of the systems ranging from 2.87 h/day to 5.57 h/day. The results from the reliability analysis also showed that when the stress concentration factor around the notch between the cable terminals in the charge controller increases, the charge controller will become overheated, which in turn affected other components of the systems. The implications of this study are also discussed for the design and development of future solar-powered street lighting systems.

scholarly journals Photovoltaic modules evaluation and dry-season energy yield prediction model for NEM in Malaysia

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0241927
Author(s):  
Syed Zahurul Islam ◽  
Mohammad Lutfi Othman ◽  
Muhammad Saufi ◽  
Rosli Omar ◽  
Arash Toudeshki ◽  
...  
Keyword(s):  
Temperature Coefficient ◽  
Output Power ◽  
Power Efficiency ◽  
Crystalline Silicon ◽  
Dry Season ◽  
Performance Ratio ◽  
Coefficient Of Determination ◽  
Energy Yield ◽  
Net Energy ◽  
Pv Modules

This study analyzes the performance of two PV modules, amorphous silicon (a-Si) and crystalline silicon (c-Si) and predicts energy yield, which can be seen as facilitation to achieve the target of 35% reduction of greenhouse gases emission by 2030. Malaysia Energy Commission recommends crystalline PV modules for net energy metering (NEM), but the climate regime is a concern for output power and efficiency. Based on rainfall and irradiance data, this study aims to categorize the climate of peninsular Malaysia into rainy and dry seasons; and then the performance of the two modules are evaluated under the dry season. A new mathematical model is developed to predict energy yield and the results are validated through experimental and systematic error analysis. The parameters are collected using a self-developed ZigBeePRO-based wireless system with the rate of 3 samples/min over a period of five days. The results unveil that efficiency is inversely proportional to the irradiance due to negative temperature coefficient for crystalline modules. For this phenomenon, efficiency of c-Si (9.8%) is found always higher than a-Si (3.5%). However, a-Si shows better shadow tolerance compared to c-Si, observed from a lesser decrease rate in efficiency of the former with the increase in irradiance. Due to better spectrum response and temperature coefficient, a-Si shows greater performance on output power efficiency (OPE), performance ratio (PR), and yield factor. From the regression analysis, it is found that the coefficient of determination (R2) is between 0.7179 and 0.9611. The energy from the proposed model indicates that a-Si yields 15.07% higher kWh than c-Si when luminance for recorded days is 70% medium and 30% high. This study is important to determine the highest percentage of energy yield and to get faster NEM payback period, where as of now, there is no such model to indicate seasonal energy yield in Malaysia.

scholarly journals Supercapacitor based PV measurement technique − quality assessment with poly-Si PV modules at IIEST, Kolkata

2019 ◽  
Vol 10 ◽  
pp. 9
Author(s):  
Sudipta Basu Pal ◽  
Rahul Kumar ◽  
Konika Das Bhattacharya ◽  
Dipankar Mukherjee ◽  
Debkalyan Paul
Keyword(s):  
Fill Factor ◽  
Quality Parameters ◽  
Performance Ratio ◽  
Electrical Parameters ◽  
Pv Panel ◽  
Pv Modules ◽  
Cell Modules ◽  
Commercial Testing ◽  
And Performance ◽  
First Time

Supercapacitors have been used for the first time as load to PV cell/modules for characterizing their behavior. In this paper, a novel and essentially simple design of a V–I plotter is attempted with a bank of super capacitors (SC) as the load to the PV modules of varying capacities. The distinct advantages of the SC's over the erstwhile capacitors have been comparatively experimented. Finally, an elaborate regression analysis (RA) of principal electrical parameters have yielded consistently high values exceeding 0.993 experimental evaluation of quality parameters like fill-factor (FF) and performance ratio (PR) have yielded a range of 70–79% while PR values frequently ranges from 90% to 99%. Suitability of poly-Si PV modules at the level of PV panel configurations have been ascertained through experimental estimate of series and parallel relative power loss (RPL) values. Typical values below 2% obtained for widely varying climatic level is also a quality indicator for the new metrology in question. Such a prototype I–V plotter is expected to be duly considered for commercial testing applications in PV industries.

Performance of Bi-Facial PV Modules in Urban Settlements in Tropical Regions

2013 ◽  
Vol 853 ◽  
pp. 312-316
Author(s):  
Carlo Pisigan ◽  
Fan Jiang
Keyword(s):  
Urban Areas ◽  
Weather Conditions ◽  
Energy Output ◽  
Rear Side ◽  
Energy Yield ◽  
Tropical Regions ◽  
Pv Systems ◽  
Irradiation Energy ◽  
Pv Modules ◽  
Urban Settlements

This paper studies the performance of bifacial Heterojunction with Intrinsic Thin-layer (HIT) PV modules through a one-year experiment in Singapore. Two 1.2kWp (front side)/0.84kWp (rear side) PV systems were installed vertically, facing the N-S and E-W directions respectively. The operational data of two systems were monitored and collected to analyze their performance under different weather conditions. This paper will presentthe change of irradiation, energy yield and the AC energy output of the bifacial PV systems. The results help to understand the impacts of system installation on the energy yield of vertically-installedbifacial HIT PV systems, to find out its advantages in applications over monofacial PV modules and to explore the potential of bifacial PV modules in tropical regions, especially in urban areas like Singapore.

scholarly journals Analysis of the Performance of Various PV Module Technologies in Peru

Energies ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 186 ◽  
Author(s):  
Irene Romero-Fiances ◽  
Emilio Muñoz-Cerón ◽  
Rafael Espinoza-Paredes ◽  
Gustavo Nofuentes ◽  
Juan De la Casa
Keyword(s):  
Crystalline Silicon ◽  
Performance Ratio ◽  
Energy Yield ◽  
Actual Behavior ◽  
Low Light ◽  
Light Levels ◽  
Pv Module ◽  
Pv Modules ◽  
Parameter Ranges ◽  
Pv Grid

A knowledge gap exists about the actual behavior of PV grid-connected systems (PVGCS) using various PV technologies in Peru. This paper presents the results of an over three-year-long performance evaluation of a 3.3-kWp monocrystalline silicon (sc-Si) PVGCS located in Arequipa, a 3.3-kWp sc-Si PVGCS located in Tacna, and a 3-kWp policrystalline (mc-Si) PVGCS located in Lima. An assessment of the performance of a 3.5-kWp amorphous silicon/crystalline silicon hetero-junction (a-Si/µc-Si) PVGCS during over one and a half years of being in Lima is also presented. The annual final yields obtained lie within 1770–1992 kWh/kW, 1505–1540 kWh/kW, and 736–833 kWh/kW for Arequipa, Tacna, and Lima, respectively, while the annual PV array energy yield achieved by a-Si/µc-Si is 1338 kWh/kW. The annual performance ratio stays in the vicinity of 0.83 for sc-Si in Arequipa and Tacna while this parameter ranges from 0.70 to 0.77 for mc-Si in Lima. An outstanding DC annual performance ratio of 0.97 is found for a-Si/µc-Si in the latter site. The use of sc-Si and presumably, mc-Si PV modules in desert climates, such as that of Arequipa and Tacna, is encouraged. However, sc-Si and presumably, mc-Si-technologies experience remarkable temperature and low irradiance losses in Lima. By contrast, a-Si/µc-Si PV modules perform much better in the latter site thanks to being less influenced by both temperature and low light levels.

scholarly journals Outdoor testing of photovoltaic modules during summer in Taxila, Pakistan

2016 ◽  
Vol 20 (1) ◽  
pp. 165-173 ◽  
Author(s):  
Hafiz Ali ◽  
Mubashar Mahmood ◽  
Muhammad Bashir ◽  
Muzaffar Ali ◽  
Aysha Siddiqui
Keyword(s):  
Amorphous Silicon ◽  
Operating Conditions ◽  
Performance Ratio ◽  
Published Data ◽  
Photovoltaic Modules ◽  
Efficiency Performance ◽  
Higher Temperature ◽  
Low Efficiency ◽  
And Performance ◽  
Module Efficiency

An experimental study has been carried out to measure the performance of commercially available photovoltaic modules during summer months in the climate of Taxila, near the capital of Pakistan. The modules used in the study are monocrystalline silicon (c-Si), polycrystalline silicon (p-Si) and single junction amorphous silicon (a-Si). The analysis has been focused on the measurement of module efficiency, performance ratio and temperature of each module at actual operating conditions using outdoor monitoring facility. The measured results are compared with the already published data of peak winter month at the same site. Overall, the monocrystalline module showed high average module efficiency while amorphous silicon module was better in term of average performance ratio. Furthermore, the module efficiency and performance ratio has shown decreasing trend with increase of module temperature. It was found that modules have much higher temperature in summer months (about 20?C higher) and showed low efficiency and performance ratio than peak winter month. The average ambient temperature varied from 18.1?C to 38.6?C from winter to summer.

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