A5073575674- Photovoltaic System Optimization Techniques
- Solar Radiation and Photovoltaics
- Solar Thermal and Photovoltaic Systems
- ZnO doping and properties
- Silicon and Solar Cell Technologies
- Photovoltaic Systems and Sustainability
- Thermography and Photoacoustic Techniques
- Solar and Space Plasma Dynamics
- Icing and De-icing Technologies
- Electronic and Structural Properties of Oxides
- Industrial Vision Systems and Defect Detection
- Chalcogenide Semiconductor Thin Films
- Silicon Nanostructures and Photoluminescence
- Copper-based nanomaterials and applications
- Ga2O3 and related materials
- Quantum Dots Synthesis And Properties
- Building Energy and Comfort Optimization
Institute for Energy Technology
2020-2025
University of Oslo
2018-2022
Kjeller Innovasjon (Norway)
2022
As cost reductions have made photovoltaics (PV) a favorable choice also in colder climates, the number of PV plants regions with snowfalls is increasing rapidly. Snow coverage on modules will lead to significant power losses, which must be estimated and accounted for order achieve accurate energy yield assessment production forecasts. Additionally, detection separation snow loss from other system losses necessary establish robust operation maintenance (O&M) routines performance evaluations....
Methods for quick and accurate detection diagnosis of defects in PV systems are increasingly important as the global photovoltaic (PV) capacity continues to grow at a rapid pace. Two most used methods defect involve aerial infrared thermography data analysis production data. In this work, we combine two analyze utility scale plants, providing new understanding about methods. We report on percentage distribution thermal anomalies different categories quantify their relationship with...
Modelled solar irradiance from CAMS, PVGIS SARAH-2, Solargis, Meteonorm, ERA5, and NASA POWER are compared to measurements conducted at 34 ground stations in Norway latitudes between 58 76°N. By dividing the distinct categories, such as high latitude, snow-affected horizon-shaded, challenges with estimation that common highlighted discussed. The accuracy of data products is dependent on by excluding above 65°N, median relative Mean Absolute Error (rMAE) different improves 3.2 – 9.4%abs rMAE...
The degradation of solar photovoltaic (PV) modules over time, which are aggravated by defects, significantly affects the performance utility-scale PV parks. This study presents a quantitative assessment power loss from module defects and evaluates cost-effectiveness replacing defective at various stages degradation. A test site was established in Norway with six different continuous thermographic monitoring, combined light IV measurements electroluminescence (EL) imaging, provides partial...
It is known that the behavior of residual Li in ion implanted ZnO depends on preferential localization implants, particular, forming characteristic depleted or pile-up regions for Zn O sublattice occupation implants due to corresponding excess generation and interstitials accordance with so-called “+1 model.” However, present study reveals conditions radiation damage annealing introduce additional complexity into interpretation redistribution trends. Specifically, four residing predominantly...
Data-driven operation and maintenance (O&M) schemes are needed to secure efficient through the full lifetime of a photovoltaic (PV) power plant. In this study, we expand capabilities an analytics platform for data-driven O&M by proposing method detection permanently activated bypass diodes from PV plant monitoring data. The new is based on step algorithm developed employed historical data 75-MWp dc results correlated with active detected infrared thermography (IRT) scan performed after 5...
Functionalizing transparent conducting oxides (TCOs) is an intriguing approach to expand the tunability and operation of optoelectronic devices. For example, forming nanoparticles that act as quantum wells or barriers in zinc oxide (ZnO), one main TCOs today, may its optical electronic tunability. In this work, 800 keV Ge ions have been implanted at a dose 1 × 1016 cm−2 into crystalline ZnO. After annealing 1000 °C embedded disk-shaped particles with diameters up 100 nm are formed. Scanning...
Semiconductor nanocrystals are often proposed as a viable route to improve solar energy conversion in photovoltaics and photoelectrochemical systems.Embedding the in, e.g., transparent conducting electrode of cell will promote photon absorption subsequent transfer generated charge carriers from nanocrystal, thereby enhance function electrode.This can be accomplished by embedding semiconducting nanocrystal with small bandgap oxide (TCO), which is commonly utilized new generation cells.Here,...
The degradation of solar photovoltaic (PV) modules over time, aggravated by defects, significantly affects the performance utility-scale PV parks. This study presents a quantitative assessment power loss from module and evaluates cost-effectiveness replacing defective at various stages degradation. A test site was established in Norway with six different continuous thermographic monitoring, combined light IV measurements electroluminescence (EL) imaging, provides partial support for further...