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Next Generation Solar Spectral Irradiance Meter with Enhanced Reliability
Viktar Tatsiankou, K. Hinzer, H. Schriemer, J. Haysom, and R. Beal
April 15, 2015, CPV-11
Acknowledgements
Viktar Tatsiankou April 15, 2015 2
11 th International Concentrator Photovoltaics Conference Viktar - - PowerPoint PPT Presentation
11 th International Concentrator Photovoltaics Conference Viktar - - PowerPoint PPT Presentation
Next Generation Solar Spectral Irradiance Meter with Enhanced Reliability 11 th International Concentrator Photovoltaics Conference Viktar Tatsiankou , K. Hinzer, H. Schriemer, J. Haysom, and R. Beal April 15, 2015, CPV-11 Acknowledgements April
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CPV industry ultimately desires the DNI and the solar spectrum
Introduction
Viktar Tatsiankou April 15, 2015 3
+
DNI Spectrum Spectroradiometer Pyrheliometer
$80k
Can we do better?
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Provides spectral DNI ~10x cheaper than a spectroradiometer
Solar Spectral Irradiance Meter
Viktar Tatsiankou 4 April 15, 2015
108 mm 124 mm
- spectral DNI in 6 bands
- temperature and pressure
- spectral DNI, AOD, ozone and
water vapour absorptions
- 280-4000 nm spectral range
- compact and rugged
- RS-485 communication with
a PC or a datalogger
Measures Models Features
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First prototype deployed in 2013
History of SSIM
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2013 2015 2014
[1] V. Tatsiankou, K. Hinzer, A. Muron et. al., "Solar resource assessment with a solar spectral irradiance meter," in 10th International Conference on Concentrator Photovoltaic Systems: CPV-10, 2014, pp. 313-316.
Problem:
Bandpass filter degradation and moisture ingress Rugged bandpass filters and custom aluminum enclosure
Solution:
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SSIM Deployments
Viktar Tatsiankou April 15, 2015
Ottawa
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SSIM GUI Software
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SSIM software reconstructs the solar spectrum
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Exploded View
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- Two SSIMs tested and calibrated
at NREL with Keith Emery in November 2014.
- NREL world-class instruments:
– Spectroradiometer – Pyrheliometer, and – Absolute cavity radiometer (ACR).
SSIM Calibration – NREL
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NREL outdoor test facility
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SSIM Calibration – NREL
Viktar Tatsiankou April 15, 2015
SSIMs SN102 and SN103 calibrated against NREL PGS100 spectroradiometer in 6 spectral channels during one hour on a sunny day
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SSIM Calibration – NREL
Viktar Tatsiankou April 15, 2015
Integrated SSIM spectra provide highly accurate DNI compared to NREL absolute cavity radiometer (ACR)
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SSIM in Ottawa
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1. The latest version of the SSIM 2. Calibrated SSIM 3. 1st new generation SSIM SN101 4. Eppley pyrheliometer 5. ASD spectroradiometer
- n sun since Sept. 27, 2014
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SSIM Performance – Ottawa
Viktar Tatsiankou April 15, 2015
Good spectral agreement with the ASD spectroradiometer
March 31, 2015 at 11:00 September 28, 2014 at 17:30
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SSIM Performance – Ottawa
Viktar Tatsiankou April 15, 2015
Daily spectral difference remains largely within ±5%
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SSIM Performance – Ottawa
Viktar Tatsiankou April 15, 2015
Integrated SSIM spectra provides accurate DNI data, even on cloudy days March 31, 2015 September 28, 2014
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SSIM Performance – Ottawa
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SSIM Performance – Ottawa
Viktar Tatsiankou April 15, 2015
Cumulative energy density of SSIM and Eppley pyrheliometer agree to < 0.5% over 6 months
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Conclusion
Viktar Tatsiankou April 15, 2015
- Daily spectral difference is largely
within ±5% as compared to ASD spectroradiometer
- Cumulative energy density is <0.5%
as compared to Eppley pyrheliometer
- No degradation for over 6 months
SSIM is a cost-effective, accurate and reliable alternative to a pyrheliometer and a spectroradiometer
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