成果報告書詳細
管理番号20130000000654
タイトル*平成24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 太陽光発電システムの据付工程簡便化に関する研究開発
公開日2014/5/9
報告書年度2012 - 2012
委託先名デュポン株式会社
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Title: New Technology Development for Reducing Photovoltaic Module Installation Cost (FY2010-FY2014) FY2012 Annual Report

Cost/Wh reduction as total photovoltaic system including module, BOS, and installation is critical in order to achieve grid parity. In this project, we aim to reduce installation cost with our unique material technology. Two approaches are taken to realize this objective, and the progress of each approach is summarized below. The first approach is the development of plastic based installation parts to reduce the number of parts and installation working hours. In 2011 we reported our success in developing the prototype of installation parts consisting of rubber and plastic, which enables quick installation of PV module without bolts or nuts. In 2012 we continued to improve parts design and installation procedures. We achieved at most 62% reduction of parts number with the new parts design. Taking the result, we determined to set our goal in next two years to be 20% reduction of working hours and labor costs. We also investigated weather durability of the installation parts. Although we have shown IEC61215 standard level durability, it is not enough to ensure its weather durability since current IEC standard is not assuming plastic installation parts. Therefore, we will further investigate the weather durability of plastic installation parts by comparing outdoor exposed samples and degraded samples by acceleration test. The second approach is development of lightweight and frameless module which makes it possible to diversify design of installation parts. Until last year, we investigated the relationship between module structure (strength and thickness of glass and encapsulants) and mechanical properties of modules. In 2012, we have developed ionomer module attached with emboss structure panel and achieved both lightweight and frameless. With these technologies, we achieved at most 50% weight reduction compared to conventional modules. As same as the installation parts, weather durability is a key item to be investigated for the new modules. We have confirmed the module’s durability to IEC standard level testing. We also confirmed PID resistance of the module consisting of ionomer encapsulant even in double glass module structure which is said to be more vulnerable to PID compared to conventional back sheet type modules. In both subthemes, we have started commercialization activities with our partners. In next two years, we will continue the commercialization process while we establish core technologies of designing installation parts and ionomer modules.
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