DOE Solar Energy Technologies Program

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DOE Solar Energy Technologies Program ( doe-solar-energy-technologies-program )

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2.3 Advanced System Concepts 3.1 System Performance Testing and Modeling This task was initiated to pursue novel PV system • manufacturing methods with the specific objectives of lowering system installation costs, improving system reliability, and accelerating system deployment. This effort directly addresses DOE Solar Program targets described in the MYPP for 2007–2011. Transfer of SNL outdoor module/array performance characterization methods and module database to ASU/PTL was initiated. Milestone delayed until FY 2006 due to personnel changes at ASU/PTL. Fig. 5. Manufacturing concept for turnkey systems Development of manufacturing technology for complete PV systems will reduce PV system assembly and installation costs, indirectly cut component costs, and significantly improve system reliability. Although this approach is valid for multiple market sectors, the focus this fiscal year was to examine the potential impact on the commercial sector. Specific research activities included: • Investigation of technical barriers to large- scale PV adoption and deployment • Development of accurate information related to individual cost elements in overall system cost • Identification of technological improvements that reduce costs and improve system reliability • Identification and promotion of markets obviously suited to pre-manufactured PV systems. 3. Results and Accomplishments The FY 2005 technical milestones and related accomplishments for the System Evaluation and Optimization Project are listed below by project subtask. Photovoltaic R&D Technology Development 80 • Completed comprehensive effort with NIST to compare and validate SNL module testing and modeling methods for building-integrated photovoltaic systems (BIPV). Documented completion of milestone at ISES-2005 conference in August 2005. • Characterized additional modules and arrays. SNL’s module database, which is used by integrators, research labs, and in commercial PV system design software, now includes 180 commercial modules and 12 arrays. • Completed performance characterization of eight new PV arrays at SNL’s PV-SOL for long-term system performance and reliability research. 3.2 Inverter Performance Characterization • Coordinated implementation of long-term inverter-aging capabilities at SNL, FSEC, and SWTDI for milestone completion. • Developed and experimentally verified an initial multi-factor inverter performance model for the PV Advisor model used to benchmark PV system performance as part of the DOE Solar Program prioritization using the Systems-Driven Approach. • Completed comprehensive baseline performance characterization of 14 separate inverters from 5 manufacturers for use in the field-aging project. • Provided detailed inverter characterization for GE and Xantrex in support of their high- reliability inverter development contracts with SNL. • Developed and implemented inverter testing protocol in cooperation with BEW Engineering and the California Energy Commission, addressing both performance and utility compatibility. 3.3 Advanced System Concepts • Initiated and documented initial effort with manufacturers, integrators, and users to define new manufacturing, certification, installation, and deployment strategies for next generation PV system-manufacturing concepts. Milestone. • Conceived prototype designs for manufactured PV systems and conducted

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