Karl Berger
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View article: Changes of solar cell parameters during damp-heat exposure
Changes of solar cell parameters during damp-heat exposure Open
© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, cre…
View article: Radiation Limits the Yield Potential of Main Crops Under Selected Agrivoltaic Designs—A Case Study of a New Shading Simulation Method
Radiation Limits the Yield Potential of Main Crops Under Selected Agrivoltaic Designs—A Case Study of a New Shading Simulation Method Open
Agrivoltaics (APVs) represent a growing technology in Europe that enables the co-location of energy and food production in the same field. Photosynthesis requires photosynthetic active radiation, which is reduced by the shadows cast on cro…
View article: Correction: Ebner et al. Photovoltaic Roofing for Motorways and Other High-Ranking Road Networks: Technical Feasibility, Yield Estimation, and Final Demonstrator. Energies 2024, 17, 3991
Correction: Ebner et al. Photovoltaic Roofing for Motorways and Other High-Ranking Road Networks: Technical Feasibility, Yield Estimation, and Final Demonstrator. Energies 2024, 17, 3991 Open
In the published publication [...]
View article: Photovoltaic Roofing for Motorways and Other High-Ranking Road Networks: Technical Feasibility, Yield Estimation, and Final Demonstrator
Photovoltaic Roofing for Motorways and Other High-Ranking Road Networks: Technical Feasibility, Yield Estimation, and Final Demonstrator Open
As renewable energies need to be extended massively, new concepts are necessary to prevent land conflicts with other uses. Such concepts should have a high generality to offer a swift expansion of renewables anywhere. Within the project, t…
View article: Transforming public spaces towards user-friendly, climate resilient and energy producing spaces - the BARTLETT
Transforming public spaces towards user-friendly, climate resilient and energy producing spaces - the BARTLETT Open
Urban areas are severely affected by climate change, as the associated increase in temperature and precipitation intensity are further exacerbated by the prevailing morphology of densely built areas and the prevalence of sealed surfaces. E…
View article: Influence of PV modules on the incident radiation and the yield of 3 plant varieties.
Influence of PV modules on the incident radiation and the yield of 3 plant varieties. Open
Agrivoltaic (APV) approaches use PV modules mounted at a sufficient height above the ground to allow synergistic use of agricultural production and energy generation. With this approach, the loss of agricultural land can be minimized. The …
View article: Results from an International Interlaboratory Study on Light- and Elevated Temperature-Induced Degradation (LETID) in Solar Modules
Results from an International Interlaboratory Study on Light- and Elevated Temperature-Induced Degradation (LETID) in Solar Modules Open
This presentation reports recently submitted results from an international interlaboratory comparison study on light- and elevated temperature-induced degradation (LETID) on crystalline silicon photovoltaic (PV) modules. A large global net…
View article: Quantifying the influence of encapsulant and backsheet composition on PV‐power and electrical degradation
Quantifying the influence of encapsulant and backsheet composition on PV‐power and electrical degradation Open
Although the technical and economic properties of the standard polymer photovoltaic (PV) materials (ethylene‐vinyl acetate (EVA) encapsulant and fluorine‐containing polyethylene terephthalate (PET) backsheet) meet the basic technical requi…
View article: Advanced UV-fluorescence image analysis for early detection of PV-power degradation
Advanced UV-fluorescence image analysis for early detection of PV-power degradation Open
Reliability and durability of photovoltaic modules are a key factor for the development of emerging PV markets worldwide. Reliability is directly dependent on the chemical and physical stability of the polymeric encapsulation materials. On…
View article: Motivation, benefits, and challenges for new photovoltaic material & module developments
Motivation, benefits, and challenges for new photovoltaic material & module developments Open
In the last decade and longer, photovoltaic module manufacturers have experienced a rapidly growing market along with a dramatic decrease in module prices. Such cost pressures have resulted in a drive to develop and implement new module de…
View article: Results from an international interlaboratory study on light‐ and elevated temperature‐induced degradation in solar modules
Results from an international interlaboratory study on light‐ and elevated temperature‐induced degradation in solar modules Open
This paper reports the results of an international interlaboratory comparison study on light‐ and elevated temperature‐induced degradation (LETID) on crystalline silicon photovoltaic (PV) modules. A large global network of PV module manufa…
View article: Designing New Materials for Photovoltaics: Opportunities for Lowering Cost and Increasing Performance through Advanced Material Innovations
Designing New Materials for Photovoltaics: Opportunities for Lowering Cost and Increasing Performance through Advanced Material Innovations Open
Within the framework of IEA PVPS, Task 13 aims to provide support to market actors working to improve the operation, the reliability and the quality of PV components and systems. Operational data from PV systems in different climate zones …
View article: Advanced Degradation Modelling of Photovoltaic Modules and Materials
Advanced Degradation Modelling of Photovoltaic Modules and Materials Open
The recently started Austrian R&D project “ADVANCE! - Advanced Degradation Modelling of Photovoltaic Modules and Materials!”, a collaboration of Austrian applied science research and a module manufacturer, addresses innovative and complex …
View article: Comparison of IEC 61853-1 Matrix Evaluations Based on Indoor and Outdoor Measurement Data from PVPS Task 15 BIPV Round-Robin
Comparison of IEC 61853-1 Matrix Evaluations Based on Indoor and Outdoor Measurement Data from PVPS Task 15 BIPV Round-Robin Open
The international standard IEC 61853-1 contains two procedures for the evaluation of PV module output (Pmp) over a range of irradiances (GPOA) and module temperatures (Tmod): a procedure for indoor labs and a procedure for outdoor measurem…
View article: IEC61853-Matrix Analysis of PVPS Task 15 BIPV Round-Robin for More Than One Year at Seven Test Sites over the World
IEC61853-Matrix Analysis of PVPS Task 15 BIPV Round-Robin for More Than One Year at Seven Test Sites over the World Open
A round-robin test on a BIPV-module has been performed within the framework of the IEA PVPS Task15. Identical modules from the same series have been measured indoors under STC-conditions to be equal in rated power within a largest differen…
View article: Climate specific accelerated ageing tests and evaluation of ageing induced electrical, physical, and chemical changes
Climate specific accelerated ageing tests and evaluation of ageing induced electrical, physical, and chemical changes Open
As the PV market shows enormous potential with huge growth rates especially in climatic‐sensible regions, specific artificial ageing test procedures are a key point for an efficient and fast product development of new PV modules/materials …
View article: Comparative Performance Measurements of Identical BIPV-Elements in Different Climatic Environments - A Round Robin Action within the IEA PVPS Task 15 Collaboration
Comparative Performance Measurements of Identical BIPV-Elements in Different Climatic Environments - A Round Robin Action within the IEA PVPS Task 15 Collaboration Open
This paper results from an on-going activity within the IEA PVPS Task 15 – Enabling Framework for the Acceleration of Building Integrated Photovoltaics (BIPV). It evaluates the performance of identical and commercially available glass/glas…
View article: Descriptive Statistics on the Climate Related Performance and Reliability Issues from Global PV Installations
Descriptive Statistics on the Climate Related Performance and Reliability Issues from Global PV Installations Open
The Austrian national project INFINITY focuses on design improvements for PV system components operating in different climatic regions. This topic appeared increasingly often in the past Photovoltaic conferences, being a result from global…
View article: Changes of solar cell parameters during damp-heat exposure
Changes of solar cell parameters during damp-heat exposure Open
The electrical ageing of photovoltaic modules during extended damp-heat tests at different stress levels is investigated for three types of crystalline silicon photovoltaic modules with different backsheets, encapsulants and cell types. De…
View article: BIPV- Potential and State of the Art in Austria: High Future BIPV-Demand for 100% Renewables – But Low Actual Share
BIPV- Potential and State of the Art in Austria: High Future BIPV-Demand for 100% Renewables – But Low Actual Share Open
At the Austrian Institute of Technology a comprehensive, current overview of the BIPV market was created. It shows, that despite a very well developed industry the share of BIPV is very low with about 2% of the overall PV-installations. Ho…
View article: Mean Degradation Rates in PV Systems for Various Kinds of PV Module Failures
Mean Degradation Rates in PV Systems for Various Kinds of PV Module Failures Open
We analyse the impact of various photovoltaic (PV) module failure modes in PV systems in the field to rank the impact of the failure types on the power generation. Therefore we designed a PV system failure survey based on a spread sheet pr…