Gustavo P. C. da Cruz, Gabriel L. Barreto, Luis A. Gómez-Malagón, Ricardo A. de Lima, and Caio V. P. Vital
Published: August 2025 | Journal of Solar Energy Engineering
Abstract
Test PV Devices Indoors with Sunlight-Level Precision
Looking for a reliable, affordable way to characterize photovoltaic panels without relying on unpredictable outdoor conditions? This Hybrid Halogen + LED Solar Simulator delivers 1-sun irradiance, wide spectral coverage, and a 600 cm² illuminated area—all engineered to meet IEC 60904-9 BAA standards for spectral match, uniformity, and temporal stability. Designed using professional-grade StellarNet spectrometers for measurement accuracy and verification.
Validated Using StellarNet Spectroscopy Tools
To ensure precise spectral matching and irradiance analysis, the research team used:
- StellarNet BLUE-Wave VIS-50 (190–1150 nm) for visible-region spectral measurement
- StellarNet DWARF-Star NIR Spectrometer (900–1700 nm) for extended near-infrared analysis
These instruments provided real-time, high-resolution data via SpectraWiz® software, enabling the team to fine-tune the simulator’s lighting array to closely match the AM1.5G reference spectrum. This project demonstrates the value of StellarNet’s compact, research-grade spectrometers in solar simulator development and PV characterization.
Proven Accuracy for Real PV Devices
Using a commercial 5 W solar panel, indoor measurements obtained with this simulator aligned closely with outdoor sunlight results:
- Pmax error: 2.8%
- Voc error: 0.77%
- Isc error: 3.3%
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