Please see my full list of publications.
Accelerating ray tracing of real bifacial systems
Dec 24, 2021|
Bifacial photovoltaic solar panels convert light into electricity from both sides and are expected to dominate the market within a decade. Bifacial solar farm developers need accurate models of energy inputs, notably of rear illumination, to estimate annual energy yield and make accurate economic projections. Ray-tracing is the most suitable technique to simulate the complex optical interactions in single axis tracking bifacial PV farms but is computationally expensive. In this work, we accelerate Monte Carlo ray tracing of large solar systems by nearly 90% and validate our results with experimental data. We analyse the impact of the surrounding ground surface area and time-dependent ground reflection via calibrated unit systems. Overall, this work provides a basis for fast and accurate predictions of the annual energy input of real bifacial tracking PV systems. In turn this can lead to better system yield projections and contribute to lower risk for solar farm developers.
Solar module yield gains from structured ribbons
Feb 25, 2021|
We compare the effects of planar & triangular ribbons, light redirecting films, wires and a new proposed pentagonal ribbon geometry, in fixed optimal inclination, building-integrated (façade), and single-axis tracking installation scenarios of modules in portrait and landscape orientation. We conclude that to fully evaluate the effectiveness of a specific ribbon design, the annual energy yield must consider the angular irradiance distribution and weather conditions at a specific location, the installation scenario, and the module orientation.
Predicting realistic annual yield for solar modules
Sep 12, 2019|
• Optimizing module design for a maximum annual performance. • Detailed gain and loss analysis from cell under STC to module in real environment. • Understanding the impact of module material on the annual module yield. • Impact of angular light, temperatures, lower irradiances on module performance. • Impact of weather condition (ambient temperature, wind speed) on module performance.
Methodology for Generating High Time Resolution Typical Meteorological Year Data for Accurate Photovoltaic Energy Yield Modelling
Jul 30, 2019|
Accurate energy yield prediction is of utmost importance for commercial scale photovoltaic systems. One key parameter crucial to the prediction accuracy is the quality of solar radiation data. Most energy yield prediction models rely on Typical Meteorological Year data with maximum temporal resolution of one hour. In this work we develop a methodology to generate Typical Meteorological Year data with much higher time resolution using gap filling methods that aim to maintain high-quality solar radiation data for photovoltaic yield modelling.
Impact of cell textures on angular cell-to-module ratios
May 02, 2018|
This work investigates the optical properties of textured surfaces from novel methods such as plasma texturing and metal catalyzed chemical etching, as well as other conventionally textured surfaces like isotropic acidic and random pyramid textures.
Impact of PV module configuration on energy yield under realistic conditions
Jan 31, 2017|
Methodology for simulating PV module yield based on the optical, thermal and electrical properties of module components and configuration.
SunCalculator - Angular and spectral distribution of solar radiation
Aug 20, 2016|
In this work, we calculate the angular and spectral distribution of direct and diffuse irradiation based on measured time-resolved integral values for diffuse and direct irradiation.