成果報告書詳細
管理番号20140000000737
タイトル*平成25年度中間年報 太陽エネルギー技術研究開発 革新的太陽光発電技術研究開発(革新型太陽電池国際研究拠点整備事業) 高効率集光型太陽電池セル、モジュール及びシステムの開発(日EU 共同開発) 集光型太陽電池セル、モジュールの標準測定技術の開発(WP4)
公開日2016/4/22
報告書年度2013 - 2013
委託先名独立行政法人産業技術総合研究所
プロジェクト番号P07015
部署名新エネルギー部
和文要約
英文要約Ultra-high efficiency concentration photovoltaic’s (CPV) cells, modules and Systems WP 4:Development of characterization tools for CPV cells, modules and systems (FY2011-FY2014) FY2013 Annual Report

1. Measurement techniques for multi-junction concentrator PV (CPV) cells
It has been demonstrated that the measurement reproducibility of 0.5% (0.5 points) for the performance of the concentrator PV cells at different concentration levels (40 - 700 suns) and different spectral bands (top, middle and bottom wavelength bands) were is possibly achieved. The major issue for improving the CPV indoor measurement is reducing and confirming the spatial uniformity of both the irradiance and spectrum of solar simulators.
The round-robin performance measurement intercomparisons with Fraunhofer ISE has been carried out for three times, which confirmed agreement in the measurement results of Isc, Voc, Pmax and FF under 1 sun of within 1.8% (relative value). The agreement under concentrated light of 40 - 700 suns was about 2-5%. These results have demonstrated that improvement in the measurement reproducibility and uncertainty is expected, by further improving these uniformity effects and applying appropriate correction. The linearity of Isc and incident irradiance has been confirmed by using the concentration optics of a minimodule.

2. Characterization technologies for CPV mini-modules
Angular dependence of the performance parameters such as Isc and Pmax of CPV mini-modules was investigated outdoors by using natural sunlight and indoors by using highly parallel continuous solar simulator (HPCSS) light. Different angular dependence was observed for Pmax and FF under indoor measurement. This indicates that specification of angular dependence for both Pmax and Isc is useful for specifying the minimodule performance. Difference in the indoor and outdoor angular dependence was observed, which is possibly caused by circum solar light. Round robin intercomparison for minimodule is also under negotiation.
Further cooperative research with European partners such as Fraunhofer ISE and also with other WP’s is important for developing and confirming the accurate performance measurement technology for CPV cells and minimodules. Both indoors and outdoors technologies are useful for fully specifying the performance. Numerical simulation study of the temperature distribution during the measurement and operation is also planned for further improving the measurement technologies.
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