Rajiv Daxini

ORCID: 0000-0003-1993-9408
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About
Contact & Profiles
Research Areas
  • Photovoltaic System Optimization Techniques
  • Solar Radiation and Photovoltaics
  • Solar Thermal and Photovoltaic Systems
  • Integrated Energy Systems Optimization
  • Silicon and Solar Cell Technologies

National Renewable Energy Laboratory
2025

University of Nottingham
2022-2023

The accuracy of photovoltaic (PV) performance forecasts is essential for improving grid penetration, fault detection, and financing new installations. Failing to account the spectral influence on PV can lead weekly errors up 14% even relatively stable technologies such as polycrystalline silicon. There exist a range models, known correction functions (SCFs), forecasts. These SCFs use different methods characterise both shift in due spectrum, solar spectrum itself. This review analyses merits...

10.1016/j.energy.2023.129461 article EN cc-by Energy 2023-10-25

Accurate forecasts of solar panel performance can improve grid penetration, enable cost evaluation prior to project implementation, and fault detection during operation. Spectral correction functions (SCFs) used model the influence spectrum in such forecasting models are typically based on either proxy representations spectrum, using parameters as air mass, or derived directly from average photon energy (APE). Although latter is more accurate, APE argued some studies not be a unique...

10.1016/j.energy.2023.129046 article EN cc-by Energy 2023-09-13

Abstract The Photovoltaic (PV) Performance Modeling Collaborative (PVPMC) organized a blind PV performance modeling intercomparison to allow modelers blindly test their models and ability against real system data. Measured weather irradiance data were provided along with detailed descriptions of systems from two locations (Albuquerque, New Mexico, USA, Roskilde, Denmark). Participants asked simulate the plane‐of‐array irradiance, module temperature, DC power output six submit results Sandia...

10.1002/pip.3729 article EN cc-by Progress in Photovoltaics Research and Applications 2023-07-21

Accurate photovoltaic (PV) performance modelling is crucial for increasing the penetration of PV energy into grid, analysing returns on investment, and optimising system design prior to investment construction. Performance models usually correct an output value known at reference conditions effects environmental variables arbitrary conditions. Traditional approaches effect solar spectrum are based proxy that represent spectral influences, such as absolute air mass (AMa) clearness index (Kt)....

10.1016/j.renene.2022.11.001 article EN cc-by Renewable Energy 2022-11-05

Forecasts of PV performance improve grid penetration and fault detection. Spectral correction functions (SCFs) used to model the spectral influence in forecasting models are typically based on proxies eg air mass, or parameters from spectrum, average photon energy (APE, φ). The latter is more accurate but it not a unique characteristic spectrum unreliable, especially when analysing longer wavelengths. This study derives f(φ) coefficients for 3 types - multicrystalline, triple junction aSi,...

10.2139/ssrn.4378056 article EN 2023-01-01
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