scholarly journals Reliability Analysis of Bifacial PV Panel-Based Inverters Considering the Effect of Geographical Location

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 170
Author(s):  
Sainadh Singh Kshatri ◽  
Javed Dhillon ◽  
Sachin Mishra ◽  
Rizwan Tariq ◽  
Naveen Kumar Sharma ◽  
...  
Keyword(s):  
Negative Impact ◽  
Geographical Location ◽  
Energy Yield ◽  
Pv System ◽  
Technology Industry ◽  
Pv Inverter ◽  
Pv Panel ◽  
Recent Trends ◽  
Reliability Performance ◽  
Mission Profile

Recent trends in the photovoltaic (PV) technology industry are moving towards utilizing bifacial PV panels. Unlike traditional PV panels, bifacial PV panels can yield energy from both sides of the panel. Manufacturers specify that bifacial PV panels can harness up to 30% more energy than traditional PV panels. Hence, bifacial PV panels are becoming a common approach at low solar irradiance conditions to yield more energy. However, a bifacial PV panel increases PV inverter loading. The PV inverter is the most unreliable component in the entire PV system. This results in a negative impact on PV system reliability and cost. Hence, it is necessary to anticipate the inverter’s reliability when used in bifacial PV panels. This paper analyzes the reliability, i.e., lifetime, of PV inverters, considering both monofacial and bifacial PV panels for the analysis. Results showed that the increase in bifacial energy yield could significantly affect PV inverter reliability performance, especially in locations where the average mission profile is relatively high.

scholarly journals Numerical Modeling of Bifacial PV String Performance: Perimeter Effect and Influence of Uniaxial Solar Trackers

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 869 ◽  
Author(s):  
Fabio Ricco Galluzzo ◽  
Pier Enrico Zani ◽  
Marina Foti ◽  
Andrea Canino ◽  
Cosimo Gerardi ◽  
...  
Keyword(s):  
Experimental Data ◽  
System Performance ◽  
Geographical Location ◽  
Performance Model ◽  
Rear Side ◽  
Energy Yield ◽  
Pv System ◽  
Latitude Range ◽  
Accurate Performance ◽  
Solar Tracker

The bifacial photovoltaic (PV) systems have recently met large interest. The performance of such systems heavily depends on the installation conditions and, in particular, on the albedo radiation collected by the module rear side. Therefore, it is of crucial importance to have an accurate performance model. To date, in the scientific literature, numerous models have been proposed and experimental data collected to study and optimize bifacial PV system performance. Currently, 3D and 2D models of bifacial PV devices exist. Though the former are more mathematically complex, they can lead to more accurate results, since they generally allow to fully consider the main aspects influencing a bifacial PV system performance. Recently, we have proposed and validated through experimental data a 3D model tested as a function of module height, tilt angle, and ground albedo. In this work, through such a model, we studied the role played by the perimeter zones surrounding the PV string, by considering PV strings of 30 or 60 modules. We considered the cases of fixed installation with optimal PV module tilt and of installation with uniaxial horizontal solar tracker. We evaluated the PV energy yield as a function of the size of the perimeter zones for the two cases, i.e., both with and without the solar tracker. In optimal perimeter conditions, we then studied the behavior of bifacial and mono-facial PV strings by varying the geographical location in a large latitude range.

Comparative Analysis of Grid Connected Photovoltaic Based Z-Source Inverter with PI and PID Controllers

2017 ◽  
Vol 14 (1) ◽  
pp. 577-584
Author(s):  
S Kamalakkannan ◽  
D Kirubakaran
Keyword(s):  
Comparative Analysis ◽  
Pid Controllers ◽  
Grid System ◽  
Pv System ◽  
Matlab Simulink ◽  
Pv Inverter ◽  
Pv Panel ◽  
Time Period ◽  
Ac Current ◽  
Simulation Results

In this work, a grid system attached Z-Source inverters for PV system with perturb and observation algorithm is projected for changing irradiance and to use full obtainable PV power. The boost operation of PV power is attained in inverter using the perception of shoot-through time period. The PV inverter is an important component in a PV system. It executes the conversion of variable DC output of the PV panel module(s) in to pure sinusoidal 50Hz AC current. This pure sinusoidal AC in turn is fed to the grid connected system. The simulation is carried out in Matlab/Simulink platform and benefits of projected systems are emphasised with the aid of simulation results.

scholarly journals Case Study Design of a Stand-Alone Photovoltaic Power System in Gaza-Strip and Genaralizing Aprogram Simulation

2021 ◽  
Vol 297 ◽  
pp. 01004
Author(s):  
Husam Awad ◽  
Naem Harb ◽  
Ghada abu Al goboz ◽  
Shareif Shurrab
Keyword(s):  
Gaza Strip ◽  
Storage System ◽  
Geographical Location ◽  
Solar Irradiation ◽  
Effect Of Temperature ◽  
Pv System ◽  
Pv Panel ◽  
Load Demand

This paper considered the design of a stand-alone PV system that would be adequate to power a single residence and estimate the appropriate size of the solar panel. This system converts solar energy directly into electricity using photovoltaic principle in PV panel arrays. The electricity produced can be used to power most ac and dc electrical appliances. Inverter is used to convert the dc generated by the PV panels to ac for most domestic and industrial use. For continuous availability of power during days of autonomy (low insolation or cloudy days), battery storage system and charge controller (for battery charge and discharge control) are required. inverter, charge controller, battery, components interconnection wires. The sizing processes considered the quality of solar irradiation of the geographical location, effect of temperature de-rating, efficiency of components, system voltage selection, days of autonomy and load demand (in watt-hour). A residence in Gaza town was chosen as a case study. The minimum electrical load of 7.875kWh per day, household, Finally excel program simulation was designed to satisfy calculation equations process and generalize the program.

scholarly journals Assessing the Techno-Economic Impact of Derating Factors on Optimally Tilted Grid-Tied Photovoltaic Systems

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1044
Author(s):  
Hasan Masrur ◽  
Keifa Vamba Konneh ◽  
Mikaeel Ahmadi ◽  
Kaisar R. Khan ◽  
Mohammad Lutfi Othman ◽  
...  
Keyword(s):  
Economic Impact ◽  
Geographical Location ◽  
Economic Assessment ◽  
Pv System ◽  
Average Value ◽  
Technical Performance ◽  
Pv Systems ◽  
Pv Panel ◽  
Power Exchange ◽  
Cost Of Energy

Photovoltaic (PV) systems encounter substantial losses throughout their lifespan due to the different derating factors of PV modules. Those factors mainly vary according to the geographical location and PV panel characteristics. However, the available literature does not explicitly concentrate on the technical and economic impact of the derating factors within the PV system. Owing to that necessity, this study performs a comprehensive analysis of various PV loss parameters followed by a techno-economic assessment of derating factors using the average value on a grid-connected and optimally tilted PV system located in Hatiya, Bangladesh. Some criteria linked to the derating factors such as PV degradation and ambient temperature are further explored to analyze their impact on the aforementioned power system. Simulation results show that PV power generation would vary around 12% annually, subject to a 10% variation in the derating factor. Again, a 10% difference in the derating factor changes the net present cost (NPC) by around 3% to 4%. The system provides the best technical performance concerning annual PV production, power trade with the grid, and the renewable fraction at a higher value of the derating factor since it represents a lower impact of the loss parameters. Similarly, the financial performance in terms of the NPC, levelized cost of energy (LCOE), and grid power exchange cost is found to be lower when the derating factor value is higher.

scholarly journals Defects Impact on PV System GHG Mitigation Potential and Climate Change

2021 ◽  
Vol 13 (14) ◽  
pp. 7793
Author(s):  
Waqas Ahmed ◽  
Jamil Ahmed Sheikh ◽  
Shahjadi Hisan Farjana ◽  
M. A. Parvez Mahmud
Keyword(s):  
Green Energy ◽  
Energy Yield ◽  
Solar Photovoltaic ◽  
Energy Potential ◽  
Pv System ◽  
Time Duration ◽  
Ghg Mitigation ◽  
Mitigation Potential ◽  
Pv Systems ◽  
Pv Panel

Solar photovoltaic (PV) systems are widely used to mitigate greenhouse gases (GHG), due to their green renewable nature. However, environmental factors such as bird drops, shade, pollution, etc., accommodation on PV panels surface reduce photons transmission to PV cells, which results in lower energy yield and GHG mitigation potential of PV system. In this study, the PV system’s energy and GHG mitigation potential loss is investigated under environmental stresses. Defects/hotspots caused by the environment on PV panel surface have unknown occurrence frequency, time duration, and intensity and are highly variable from location to location. Therefore, different concentrations of defects are induced in a healthy 12 kWp PV system. Healthy PV system has the potential to avoid the burning of 3427.65 L of gasoline by 16,157.9 kWh green energy production per annum. However, in 1% and 20% defective systems, green energy potential reduces to 15,974.3 and 12,485.6 kWh per annum, respectively. It is equivalent to lesser evasion burning of 3388.70, and 2648.64 L of gasoline, respectively. A timely solution to defective panels can prevent losses in the PV system to ensure optimal performance.

scholarly journals Impact of Solar Irradiance and Ambient Temperature on PV Inverter Reliability Considering Geographical Locations

2021 ◽  
Vol 39 (1) ◽  
pp. 292-298
Author(s):  
Sainadh Singh Kshatri ◽  
Javed Dhillon ◽  
Sachin Mishra
Keyword(s):  
Renewable Energy ◽  
Environmental Factors ◽  
Ambient Temperature ◽  
Solar Irradiance ◽  
Renewable Energy Sources ◽  
Cold Climate ◽  
Pv Inverter ◽  
Reliability Performance ◽  
Mission Profile ◽  
Geographical Locations

Today inverter system is one of the enabling technologies for efficiently harnessing energy from renewable energy sources (Solar, Wind, etc.,) and also for high reliable grid interfacing systems. With the advancements in power electronics, inverter conversion efficiency pushed to 98%, also PV is becoming a major renewable energy source globally. Nevertheless, the reliability performance of PV inverter is of high concern. Different environmental factors like solar irradiance, ambient temperature (also called Mission Profile) affect the reliability performance of PV inverter. Environmental conditions vary from location to location. Hence to quantify the reliability performance of PV inverter all these factors need to be considered. In this paper reliability performance of PV inverter is evaluated considering environmental factors and geographical locations. For the reliability evaluation, a 1-ϕ, 3-kW grid connected PV system is developed in PLECS. Full bridge PV inverter with 600V/30A IGBT is employed as the interface between grid and PV source. Real time mission profile data of one-year logs at India (Relatively hot climate) and Denmark (Relatively cold climate) to account for environmental factors and geographical locations during the reliability performance evaluation of PV inverter. Monte Carlo simulation is used to generate a population of 20000 samples with 5% variation. Lifetime for 20000 samples is calculated and fitted in Two Parameter Weibull distribution. B10 lifetime is calculated at two locations. The results of this paper reveal that environmental factors and geographical locations have a significant impact on PV inverter reliability performance.

scholarly journals Comparative Evaluation of Lifetime of Three-Level Inverters in Grid-Connected Photovoltaic Systems

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1227 ◽  
Author(s):  
Ui-Min Choi ◽  
June-Seok Lee
Keyword(s):  
Maintenance Cost ◽  
Energy Market ◽  
Electronic Components ◽  
Power Devices ◽  
Pv System ◽  
Pv Systems ◽  
One Year ◽  
Reliability Performance ◽  
The Cost ◽  
Mission Profile

The cost of the PV energy reduction is still required to increase the penetration level of PV systems in the energy market. The reliability of PV inverters is one of the important aspects to be enhanced in order to reduce the cost of PV energy, since it is closely related to the maintenance cost and the annual energy production. In this paper, the lifetime of NPC and T-type inverters, which are three-level inverter topologies that are widely used for PV systems, are comparatively evaluated with a 30 kW grid-connected PV system. It is performed by focusing on power devices since the power electronic components of both converters are the same except for the power devices. Therefore, this result can represent the comparison of the reliability performance of the NPC and T-type inverters. The power loss and temperature distributions of power devices are analyzed and their efficiencies are compared at different power levels with different switching frequencies. The lifetimes of the reliability-critical power devices in the NPC and T-type inverters are estimated, respectively with a one-year mission profile of the PV system, and the results are compared.

scholarly journals How Adding a Battery to a Grid-Connected Photovoltaic System Can Increase its Economic Performance: A Comparison of Different Scenarios

Energies ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 30 ◽  
Author(s):  
Mohamad Kharseh ◽  
Holger Wallbaum
Keyword(s):  
Negative Impact ◽  
Electricity Consumption ◽  
Residential Building ◽  
Economic Feasibility ◽  
Photovoltaic System ◽  
Southern Sweden ◽  
Pv System ◽  
Pv Panel ◽  
Battery Capacity ◽  
Working Parameters

The current work investigates how adding a battery of optimal capacity to a grid-connected photovoltaic (PV) system can improve its economic feasibility. Also, the effect of different parameters on the feasibility of the PV system was evaluated. The optimal battery capacity (OBC) was determined for different saving targets of the annual electricity consumption of the chosen building. For this aim, real electricity consumption data of a residential building in Landskrona, Sweden, was used as energy consumption profile. A Solar World SW325XL, which is a monocrystalline solar panel, was selected as PV panel. The calculations were performed under the metrological and economic conditions of southern Sweden. Different working parameters (WPs) were considered (prices of the battery, feed-in tariffs, and saving targets). The performed calculations show that the optimal battery capacity (OBC), in which the payback time (PBT) of the system is maximized, strongly depends on the WP. The proper selection of the battery can considerably increase the economic feasibility of the PV system in southern Sweden. However, in some cases, using battery can have a negative impact on the PBT of the system. The results show that the electricity price, the module price, the inverter price, and the inverter lifetime have the highest effect on the PBT.

scholarly journals Researches of the Impact of the Nominal Power Ratio and Environmental Conditions on the Efficiency of the Photovoltaic System: A Case Study for Poland in Central Europe

2020 ◽  
Vol 12 (15) ◽  
pp. 6162
Author(s):  
Mariusz T. Sarniak
Keyword(s):  
Climatic Conditions ◽  
Photovoltaic System ◽  
Energy Yield ◽  
Power Ratio ◽  
Pv System ◽  
Second Stage ◽  
Pv Inverter ◽  
System A ◽  
The Impact

The paper analyzes a case study of the impact of changing the nominal power ratio (NPR) on the efficiency of a PV (photovoltaic) system located in Poland. In the first stage of the research, the acceptable range of variability for NPR was determined based on simulation calculations, taking into account the parameters of PV modules, inverter, and climatic conditions. The second stage was verification tests for two acceptable extreme cases, carried out based on the analysis of detailed data from the monitoring of PV installations. The results of the verification tests for the two considered periods of operation of the PV system with the change of the NPR coefficient from 82% to 98% resulted in an increase in the annual energy yield by 446.2 kWh. On the other hand, higher relative values of generated energy were obtained only for the months with the lowest insolation in December and in January by 8.2 and 6.04 kWh/kWp, respectively. Higher oversizing of the PV generator (for NPR = 82%) also resulted in an increase by 6.4% in the frequency of operation of the PV inverter in the largest power range (2250–2500 W) and a decrease by 3.7% in the frequency in the lowest power range (0–250 W) for the whole year.

scholarly journals A Novel Approach for grid integration of Cascaded H-bridge Multilevel Inverter Under Partial Shading Condition

2018 ◽  
Vol 9 (3) ◽  
pp. 1330
Author(s):  
Swetapadma Panigrahi ◽  
Amarnath Thakur
Keyword(s):  
Maximum Output Power ◽  
Control Technique ◽  
Maximum Output ◽  
Pv System ◽  
Partial Shading ◽  
Grid Current ◽  
Pv Inverter ◽  
Pv Panel ◽  
Novel Approach ◽  
Zero Sequence

<p>A modular cascaded H-bridge PV inverter system is presented in this paper. The modular structure of PV inverter helps in obtaining the maximum output power of PV system along with increase the overall efficiency of the whole system. Moreover to utilize the system up to the best a distributed MPPT controller is attached with each PV panel. As partial shading causes  power imbalance at the converter output that leads to imbalance grid current, a control technique called the modulation compensation is adopted in such a way that if three phase unbalanced voltage varies directly according to unbalanced power, the injected zero sequence voltage components make the grid current balanced.</p>

Sign in / Sign up

Export Citation Format

Share Document