Current Photovoltaic Research

Korea Photovoltaic Society (한국태양광발전학회)
권호 표지
DOI QR코드

DOI QR Code

Performance Parameters of a Bifacial PV Device and Accurate Measurement Method for the Parameters

양면형 태양광발전 소자의 성능변수 및 이에 대한 정확한 측정방법

  • Ahn, Seungkyu (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Ahn, SeJin (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Eo, Young Joo (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Yoo, Jinsu (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Park, Joo Hyung (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Kim, Kihwan (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Cho, Ara (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Cho, Jun-Sik (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Yun, Jae-Ho (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Shin, Donghyup (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Jung, Inyoung (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Gwak, Jihye (Photovoltaic Laboratory, Korea Institute of Energy Research)
  • 안승규 (태양광연구실, 한국에너지기술연구원) ;
  • 안세진 (태양광연구실, 한국에너지기술연구원) ;
  • 어영주 (태양광연구실, 한국에너지기술연구원) ;
  • 유진수 (태양광연구실, 한국에너지기술연구원) ;
  • 박주형 (태양광연구실, 한국에너지기술연구원) ;
  • 김기환 (태양광연구실, 한국에너지기술연구원) ;
  • 조아라 (태양광연구실, 한국에너지기술연구원) ;
  • 조준식 (태양광연구실, 한국에너지기술연구원) ;
  • 윤재호 (태양광연구실, 한국에너지기술연구원) ;
  • 신동협 (태양광연구실, 한국에너지기술연구원) ;
  • 정인영 (태양광연구실, 한국에너지기술연구원) ;
  • 곽지혜 (태양광연구실, 한국에너지기술연구원)
  • Received : 2017.08.21
  • Accepted : 2017.09.20
  • Published : 2017.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

We have examined the issues on the measurement of bifacial photovoltaic(PV) devices that should be considered in order to ensure a measurement accuracy beyond a certain level and the comparability between the bifacial PV devices. Based on the results of various experiments and previous studies, solutions for these measurement issues are suggested. The most significant technical issues in the performance measurement of the bifacial PV devices are 1) elimination of the effect due to the light reflection on the sample holder surface and 2) the measurement of the expected power generation gain in outdoor operation. The effect due to the light reflection on the sample holder surface can be eliminated by using an anti-reflective sample holder. In case of a reflective sample holder, if the bifacial device have a linear characteristic with respect to the irradiance of incident light, it has been confirmed (through some previous studies and additional experiment) that exact measurement results can be obtained by the correction of the measurement data. In addition, it was also confirmed that the expected power generation gain in the outdoor operation can be obtained by three different methods along with the basic concepts of the bifaciality coefficient, the albedo, and the effective front irradiance.

Keywords

References

  1. First Solar Press Release. "First Solar achieves world record 18.6 % thin film module conversion efficiency", 15 June 2015.
  2. Sugimoto, H. "High efficiency and large volume production of CIS-based modules", 40th IEEE Photovoltaic Specialists Conference, Denver, 2014.
  3. http://www.miasole.com (accessed 01 August, 2017)
  4. Hosoya, M., Oooka, H., Nakao, H., Gotanda, T., Mori, S., Shida, N., Hayase, R., Nakano, Y., Saito, M., "Organic thin film photovoltaic modules", Proceedings of the 93rd Annual Meeting of the Chemical Society of Japan, pp. 21-37, 2013.
  5. Komiya, R., Fukui, A., Murofushi, N., Koide, N., Yamanaka, R., Katayama, H., "Improvement of the conversion efficiency of a monolithic type dyesensitized solar cell module", Technical Digest, 21st International Photovoltaic Science and Engineering Conference, Fukuoka, 2011.
  6. Yang, W.S., Noh, J.H., Jeon, N.J., Kim, Y.C., Ryu, S., Seo, J., Seok, S.I., "High- performance photovoltaic perovskite layers fabricated through intramolecular exchange", Science, 348(6240), pp. 1234-1237, 2015. https://doi.org/10.1126/science.aaa9272
  7. Mehlich, H., Kirchhoff, F., Leonhardt, M., Hausmann, J., Burkhardt, S., Waltinger, A., Konig, M., Grimm, M., Belgardt, C., Yao, Y., Bonnet-Eymard, B., Beyer, S. Gragert, M., Soderstrom, T. "Investigation on half cells for heterojunction modules", 32nd European PV Solar Energy Conference and Exhibition, Munich, 2016.
  8. Tomasi, A., Paviet-Salomon, B., Lehmann, M.J., Lachenal, D. Geissbuhler, J., Sief, J.P., Barraud, L., Descoeudres, A., Christmann, G., Badel, N., Watanabe, H., Faes, A., Nicolay, S., Strahm, B., Despeisse, M., De Wolf, S., Ballif, C., "22.9% simplified back-contact silicon heterojunction solar cell", 32nd European PV Solar Energy Conference and Exhibition, Munich, 2016.
  9. Chen, S., Liu, H., Chang, H., Chiu, Y., Wang, Y., Lin, Y., Yu, S., Lih, W., Du, C. "Bifacial solar cell fabricated by PERC process for mass production", 32nd European PV Solar Energy Conference and Exhibition, Munich, 2016.
  10. Wu, C., Ni, P., Wei, Q., Lu, J., Lian, W., Hu, Y., Liu, X., Zhang, S., "The bifacial nPERT solar cell coupling boron spin-on with POCI3 diffusion and its glass-glass module performance", 32nd European PV Solar Energy Conference and Exhibition, Munich, 2016.
  11. Hezel, R., "A novel high-efficiency reare-contact solar cell with bifacial sesitivity", High-Efficiency Low-cost Photovoltaics. Springer Series in Optical Sciences, 140, pp. 65-93, 2009.
  12. Duran, C., Deuser, H., Harney, R., Buck, T. "Approaches to an improved IV and QE characterizaion of bifacial silicon solar cells and prediction of their module performance", Energy Procedia, 8, pp. 88-93, 2011. https://doi.org/10.1016/j.egypro.2011.06.107
  13. Singh, J.P., Walsh, T.M., Aberle, A.G., "A new method to characterize bifacial solar cells", Progress in Photovoltaics: Research and Applications, 22, pp. 903-909, 2014. https://doi.org/10.1002/pip.2341
  14. Singh, J.P., Aberle, A.G., Walsh, T.M., "Electrical Characterization method for bifacial photovoltaic modules", Solar Energy Materials & Solar Cells, 127, pp. 136-142, 2014. https://doi.org/10.1016/j.solmat.2014.04.017
  15. IEC/TS 60904-1-2. "Photovoltaic devices - part 1-2: Measurement of current-voltage characteristics of bifacial photovoltaic (PV) devices" (to be published)
  16. Hohl-Ebinger, J., Warta W. "Bifacial solar cells in STC measurement." 25th European Photovoltaic Solar Energy Conference and Exhibition, Valencia. 2010.
  17. Shimura, H., Sasaki, A., Ohshima, H., Hishikawa Y. "Accurate performance evaluation of conventional and bifacial crystaline silicon solar cells", 6th World Conference on Photovoltaic Energy Conversion, Kyoto, 2014.
  18. IEC 60891 Ed. 2 "Photovoltaic devices - Procedures for temperature and irradiance corrections to measured I-V characteristics"
  19. Ohtsuka, H., Sakamoto, M., Koyama, M., Tsutsui, K., Uematsu, T., and Yazawa Y., "Characteristics of bifacial solar cells under bifacial illumination with various intensity levels", Progress in Photovoltaics: Research and Applications, 9, pp. 1-13, 2001. https://doi.org/10.1002/pip.336
  20. McIntosh, K.R., Honsberg, C.B., Wenham, S.R., "The impact of rear illumination on bifacial solar cells with floating junction passivation", Proceeding of the 2nd World Conference and Exhinition on Photovoltaic Solar Energy Conversion, pp.1515-1518, 1998.