成果報告書詳細
管理番号20120000000573
タイトル*平成23年度中間年報 太陽エネルギー技術研究開発/太陽光発電システム次世代高性能技術の開発/信頼性及び寿命評価技術の開発
公開日2012/6/20
報告書年度2011 - 2011
委託先名太陽光発電技術研究組合
プロジェクト番号P0715
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:
1. 研究開発の内容及び成果等
太陽光発電システムの利用拡大や技術発展のためには、システムを構成する太陽電池モジュールやシステム全体としての性能・発電量・信頼性等の各種評価方法の確立が必要である。これらの技術開発を行い、その結果を基に国際的な規格化・標準化等の産業基盤の整備に資することが重要である。そのために発電量評価技術の開発、信頼性及び寿命評価技術の開発、および次世代太陽光発電システムに向けた基盤技術開発戦略調査研究を実施する。
英文要約Title: R&D for Solar Energy, R&D for High Performance PV Generation Systems for the future, Development of Reliability and Lifetime Assessment Technology, and Research of Fundamental Technology Development for Next-Generation PV Generation Systems (FY2010-FY2012) FY2011 Annual Report
JET as the sharing research institute of PVTEC researched (1), (2) and (3) described below. PVTEC researched (4).
(1) The certification test: JET verified degradation factors indicated by the field survey of PV system, and conducted thermal cycle tests with solar-simulated irradiation in order to investigate characteristic factors in output power degradation of thin-film-Si modules according to previous works. Thermal cycle tests with irradiation implied that the value and the number of repeated cycles of the lowest temperature of modules influence characteristic factors of output power degradation of thin-film-Si modules.
(2) The analysis of power generation: in order to clear quantitatively the relationship between measurable items and evaluable loss using the analysis method of loss, JET measured operation data of residential PV systems at 47 sites and built the database of performance in operation. At each sites we measured power generation and various parameters, and calculated the difference between measured output power and estimated one and analysed using SV method.
(3) The testing of safety and performance of used modules: JET collected various data of modules operated at actual field in order to determine insulation performance. Some modules operated for more than 20 years met existing criteria for new modules. In modules which operated under high irradiation and high temperature, or at salt-laden area, insulation performance was degraded. Variation of insulation performance degradation among modules with identical model was less than modules with different model. No relation was found between discoloration of back sheet and insulation performance. In terms of establishment of electrical criteria about compatibility between various modules when replacing broken module with new one, various ratios of short-circuit current and open-circuit voltage between old module and new one were calculated for identify the condition to suppress reverse voltage.
(4) Research of fundamental technology development for Next-Generation PV Systems: PVTEC has set up three subcommittees, the "High-Reliability PV Module Subcommittee," the "High-Reliability PC and BOS Subcommittee" and the "Social System Building Subcommittee" (set up since this fiscal year), and the "General Research Committee on High-Reliability and Long Lifetime PV Generation Systems." The major studies for this fiscal year are: [PV Module] 1) considering lifetime prediction by component, 2) adopting lifetime prediction methods that are applied to products in other industries; [PC/BOS] 1) considering appropriate states of power systems that are available in emergency, 2) summing up what the primary lifetime of power conditioners means and considering how to extend such lifetime; [Social System] 1) considering the role of PV generation in whole energy system, 2) considering advantages and disadvantages from users' viewpoint when introducing PV generation and social systems hindering.
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