Experimental Testing of PV Module Performance (original) (raw)
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Environmental and Climate Technologies
This article presents an evaluation of the performance of PV modules with the variation of some technical and environmental parameters: The PV module tilt angle, and the impact of soiling on the power output of PV module, and the transmittance of the PV glass surfaces. The experiments were achieved in Helwan City (Egypt) at the premises of the Faculty of Engineering of Helwan University. For the soiling part, it comprises two experiments: Transmittance of PV glass surfaces, and the power output of PV modules. For the transmittance experiment, it has been achieved using a simplified method, where three PV glass surfaces were placed at three different tilt angles (0°, 15°, and 30°) and left exposed to the outdoor environment without cleaning for a period of 25 days during the summer season. For the experiment concerning the impact of soiling on the power output, a set of PV modules connected in series have been exposed for a period of 75 days to the outdoor environment without cleanin...
Experimental Analysis of Factors Affecting the Power Output of the PV Module
International Journal of Electrical and Computer Engineering (IJECE), 2017
Energy is the driving force in all the sectors as it acts like an index of standard of living or prosperity of the people of the country. However heavy dependence on fossil fuels leads to global warming, hence there is a need for the use of clean, sustainable, and eco friendly form of energy. Among the various types of non-conventional energy solar energy is the fundamental as it is abundant, pollution free and universally available.Even though the main input to the PV system is the solar radiation still there are other factors which affects the efficiency of the pv module. In this paper real time experiment has been conducted to analyze the effect of various factors like irradiance, temperature, and angle of tilt, soiling, shading on the power output of the pv module. Temperature is a negative factor which reduces the efficiency of the module and can be reduced by various cooling arrangements. Presence of dust particles and shading obstructs the incident solar radiations entering the panel and the effect is seen in the iv and pv curve .For better performance solar tracking at maximum power point is suggested to improve the power output of the pv module.
Indoor and Outdoor Measurements of PV Module Performance of Different Manufacturing Technologies
2017
In the present paper, an experimental analysis of the PV modules efficiency of different photovoltaic comprising monocrystalline silicon, polycrystal-line silicon and thin-film silicon technologies has been made. The PV modules were first subjected to thorough indoor evaluation (Sun simulator, Electroluminescence) to check the real characteristics and internal defects that make the effectiveness of these modules lower compared to characteristics declared by the manufacturer under the terms of DIN EN ISO/IEC 17025:2005. Results of the first analysis have been taken as a reference for the second part, which consist of ex-posing the PV modules to various natural factors in outdoor environment (solar radiation, temperature, wind, humidity…) versus time. Then, using the peak power measuring device PVPM, different electrical characteristics of the photovoltaic module during the exposure in operating site were determined. Significant differences in the energy efficiency of PV modules have ...
Outdoors Measurements of PV Module Efficiency and Temperature Coefficients
2015
Performance of a PV installation depends critically on the modules behaviour. That is the reason why a good estimation of energy production of a PV installation relies not only on the goodness of the module power characterization at standard test conditions, but also on the goodness of the characterisation of the module behaviour related to the variation of irradiance and temperature. So, it is closer to the reality running a simulation exercise of energy production with the actual values measured outdoors than with the values obtained from datasheets. This paper presents a device specifically implemented to measure outdoors the power of modules at standard test conditions, as well as their efficiency variation with irradiance and their temperature coefficients. Results of measurements with this device are also reported.
Evaluation the Influences of Temperature, Dust and Shading on Photovoltaic System Performance
IOP Conference Series: Materials Science and Engineering, 2020
The proliferation of the use of Photovoltaic PV systems, as one of the sources of electricity that comes from renewable energy resources, attracting the researchers to investigate on the factors that have an effect on the performance of it. This paper presents an analytical study for evaluating the performance of PV system that generates 2.5 kWp through the deployment of this system to supply the electricity for the Engineering Consultant office, of the College of Engineering at Wasit University, Iraq (32.497 N, 45.842 E). The evaluation is conducted by monitoring the pre-defined system which consists of 10 PV modules as an array of two rows. The system is supervised for six months from 1st of Feb. until 31st of July, to assess the impact of temperature, shading, and dust on its’ output power and performance. The PV array is omitted to 8˚ south-west, and 40˚ in elevation. The results shows that the PV array is operated at efficiency of 12.12% and the maximum efficiency reached 13.01...
Solar Energy Materials and Solar Cells, 2011
Outdoor performance of photovoltaic (PV) modules primarily depends on the instantaneous plane-ofarray irradiance (G poa) and PV module temperature (T pv). T pv can be estimated from the ambient temperature (T amb) and the G poa as T pv ¼ T amb +k T G poa. The coefficient k T depends strongly on the way the PV module is mounted (open rack, ventilated or unventilated roof mounting, etc.), wind speed and also on the module type. In the presented paper, open rack mounted and unventilated roof integrated cases of PV module installation are experimentally and theoretically examined. Linear relationship with k T is upgraded with a nonlinear one based on the energy balance model and measured data. Nevertheless, T pv is also affected by the module's regime of operation. The T pv dependency on different regime of operation (open-circuit and maximum power point tracking) for two types of PV modules in two regimes is reported. Differences are discussed in light of energy balance equation within thermal management, where impact of the PV module conversion efficiency on T pv is also shown.
Study the effect of Environmental Factors on the performance of Photovoltaic Module
Wasit Journal of Engineering Sciences
The effects of various environmental factors have been studied on the efficiency of the PV module as an essential part of the work and how to enhance its efficiency by reducing the influences environmental factors. The study deals with the efficiency of PV module and how to calculate and improve them. The measurements were made from December 2020 to August 2021 at 9 am to 5 pm for the weather of the city of Nasiriyah. The examination a single PV module is used, which gave an PMAX equal to 10 Watt. The most important has been studied on the PV is the temperature, whenever its grateful that led to decline in the output voltage and slight decrease in the output current. The output current PV module increased when the rise in the solar irradiance. To mitigate the impact of this factor, air cooling and water cooling had been used through cooling techniques by using DC fan, cooling blocks and water douche. It is clear that from our work we have improve efficiency of the module during the ...
Effect of Wind Speed and Temperature on the Efficiency of PV Module
Nowadays Energy Supply has become a major issue for developing countries like Pakistan. To cope up with this issue the world starts moving towards renewable sources instead of burning fossil fuels which has a carbon effect on the environment as well as living things. In the Power Generation sector, Solar Energy has now become an alternative to Fossil Fuels based power production plants. In today's world, PV modules known as Photovoltaic Modules consisting of different solar light-capturing sheets are used to get safe energy production. Side by side, calculation, and analysis of the impact of various factors like wind and temperature on the production of energy are significant for the evaluation of capacity. In this report Actual Efficiency, Capacity factor, Performance Ratio, and Annual energy of 300W are calculated using solar radiation analysis data for the year 2015 for Bahawalpur along with analysis of the impact of Temperature only and temperature and Wind on the PC-module performance or production from firstly Daily basis calculation then on Monthly basis from the Hourly Datasets.
Performance Intercomparison of 13 Different PV Modules Based on Indoor and Outdoor Tests
At the begin of 2009 the ISAAC institute started a new measurement campaign investigating thirteen different modules commercially available on the market. Two modules of each type have been exposed outdoors for energy yield monitoring and a third module has been stored indoors as a reference. The modules covers a large range of different technologies ranging from multi-crystalline silicon (mc-Si) of which two with back-contact cells, 3 single-crystalline silicon (sc-Si), 1 hybrid mono-crystalline technology with amorphous silicon layer (HIT), 1 double junction amorphous silicon (a-Si/a-Si), 1 micromorph (a-Si/µc-Si), 1 Cupper-Indium-Sulfide (CIS) and 1 Cupper-Indium-Gallium-Diselenide (CIGS). The aim of the measurement campaign is to assess the quality of current technologies and the understanding of observed differences between technologies. Outdoor and indoor performance of the modules are analysed over 15 months performing measurements under real operating conditions, regular STC and low irradiance indoor testing with a solar simulator to determine stability of the devices over time and the relation between indoor performance and outdoor yield. The modules are therefore installed on a ventilated rack where each single module is connected to a maximum power point tracker delivering Im, Vm values in minutes intervals. The annual energy output in kWh/Wp is measured and the differences between various module technologies or modules of the same technology is analysed, by quantifying the influence of the temperature coefficient, the low irradiance performance measured indoors, the module temperature as well as all measurement related uncertainties.
The paper deals with an extensive PV modules monitoring activity carried out at the outdoor station ESTER of the University of Rome Tor Vergata. The purpose of the work was to evaluate and compare the performances of PV silicon modules of polycrystalline and amorphous technologies during a medium term outdoor exposure at optimized tilt angle, facing south. Two PV modules, one polycrystalline by Kyocera and one double junction amorphous by EPV Solar have been exposed since May 2009. 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 performances. For the EPV 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.