A5025863388- Calibration and Measurement Techniques
- Photovoltaic System Optimization Techniques
- Solar Thermal and Photovoltaic Systems
- Solar Radiation and Photovoltaics
- Scientific Measurement and Uncertainty Evaluation
- solar cell performance optimization
- Silicon and Solar Cell Technologies
- Smart Grid Energy Management
- Power System Reliability and Maintenance
- Photovoltaic Systems and Sustainability
- Spectroscopy and Chemometric Analyses
- Atmospheric Ozone and Climate
- Ocular and Laser Science Research
- Adaptive optics and wavefront sensing
- Photonic and Optical Devices
- Laser Design and Applications
- Spectroscopy and Laser Applications
- Advanced Sensor Technologies Research
Aalto University
2020-2023
The IEC 61853 standard series aims to provide a standardized measure for photovoltaic (PV) module energy rating, namely the Climate Specific Energy Rating(CSER). For this purpose, it defines procedures experimental determination of input data and algorithms calculating CSER. However, some steps leave room interpretation regarding specific implementation. To analyze impact these ambiguities, comparability results, clarity algorithm CSER in Part 3 standard, an intercomparison is performed...
Abstract We have developed a setup for measuring differential spectral responsivities of unifacial and bifacial solar cells under bias light conditions. The uses 30 high-brightness LEDs generating quasi-monochromatic source covering the wavelength range 290–1300 nm. Halogen lamps are used to generate bias-lighting conditions up irradiance level 1000 W/m 2 . has been fully characterized irradiances spatial uniformities all sources. Validation measurements carried out using reference cell × cm...
Abstract This paper presents the spectral responsivity calibrations of two indium gallium arsenide (InGaAs) and one germanium based near-infrared photovoltaic detectors using a wavelength tunable laser source on supercontinuum developed at Metrology Research Institute, Aalto University. The setup consists photonic crystal fiber as light source, line filter, coupling optics. These are performed against pyroelectric radiometer over wide range 800–2000 nm. Our has high power up to 2.5 mW with...
A solar cell is characterized using a simulator and reference in accordance with standard testing conditions. Deviations between the spectral responsivities of being studied, deviations irradiance light source used from specified air mass 1.5 introduce systematic errors calibration cells. These are corrected so-called mismatch (SMM) correction factor. We demonstrate Monte Carlo simulation-based analysis uncertainties present an SMM factor taking into account possible correlations input...
Abstract When studying the results of key comparisons spectral quantities, it appears that in many cases participants’ systematically deviate from comparison reference values over a limited range. We carried out analysis such deviations seven optical radiometry. The reveal an approximate outcome that, on average, each harmonic amplitude is inversely proportional to order all studied comparisons. This new finding gives important information characteristics correlations. result can be used...
Abstract According to our experimental results, a nitrogen flow used prevent dust and moisture entering detector may influence measurements performed with trap detectors in overfilled conditions. A stable light source was measured wedged 4 mm aperture, the rate varied. The found have largest effect of up 0.8% on responsivity at around 1.0 l min −1 rate. can be removed down 0.02% by an added crossflow which removes out optical axis. In another experiment, almost completely changing flowing...
Abstract We report realization of scales for optical power lasers and spectral responsivity laser detectors based on a predictable quantum efficient detector (PQED) over the range 400 nm–800 nm. The PQED is characterized used to measure that further in calibration responsivities working standard trap at four distinct lines, with an expanded uncertainty about 0.05%. present comparison calibrated against Aalto cryogenic radiometer RISE, Sweden. measurement results support concept can be as...
<p>The IEC 61853 standard series aims to provide a standardized measure for PV module energy rating, namely the Climate Specific Energy Rating (CSER). For this purpose, it defines procedures experimental determination of input data and algorithms calculating CSER. However, some steps leave room interpretation regarding specific implementation. To analyze impact these ambiguities, comparability results clarity algorithm CSER in part 3 standard, an intercomparison is performed among...
<p>The IEC 61853 standard series aims to provide a standardized measure for PV module energy rating, namely the Climate Specific Energy Rating (CSER). For this purpose, it defines procedures experimental determination of input data and algorithms calculating CSER. However, some steps leave room interpretation regarding specific implementation. To analyze impact these ambiguities, comparability results clarity algorithm CSER in part 3 standard, an intercomparison is performed among...