MBliss - Paper - Linearity Measurement Uncertainty - Final.pdf (153.69 kB)
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Uncertainty contributions in photocurrent linearity measurements of PV devices using a flash solar simulator

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conference contribution
posted on 26.01.2018, 13:38 by Martin BlissMartin Bliss, Blagovest V. Mihaylov, George Koutsourakis, Tom BettsTom Betts, Ralph Gottschalg
Especially for reference devices, the linearity of photocurrent over irradiance is an important characteristic that requires a low measurement uncertainty. This work investigates the uncertainty contributions when using a typical flash solar simulator with attenuation masks to determine the linearity characteristics of a device. Due to the complexity in measurement correlations, a Monte-Carlo simulation model was developed to estimate the final uncertainty. Results show that attenuation masks are not necessarily spectrally neutral and, if left uncorrected, this can significantly impact the measurement results. Furthermore, uncertainty in linearity is also dependent on the linearity of the sample under test itself. A shunted, non-linear device can have double the linearity uncertainty in low light conditions than a similar, linear sample.

Funding

The research work leading to this article was carried out within the EMRP ENG55 project Towards an Energy-based Parameter for Photovoltaic Classification. The EMRP is jointly funded by the EMRP participating countries within EURAMET and the European Union.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

13th Photovoltaic Science, Application and Technology Conference

Citation

BLISS, M. ...et al., 2017. Uncertainty contributions in photocurrent linearity measurements of PV devices using a flash solar simulator. 13th Photovoltaic Science, Application and Technology Conference (PVSAT-13), Bangor, UK, 5th-7th April 2017.

Publisher

© The Solar Energy Society

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

05/04/2017

Publication date

2017

Notes

This is a conference paper.

Publisher version

Language

en

Location

Bangor, UK

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