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Future Directions • Detailed module, array, inverter, and system research aimed at understanding and improving the performance, reliability, and cost of fully integrated PV systems. • Performance testing to improve the performance models used for system design, annual energy predictions, field performance validation, component integration and optimization, long-term performance monitoring, and renewable energy financial incentive programs. • Collaborative investigations to define system integration, manufacturing, and installation opportunities that could dramatically improve the performance, reliability, and installed cost of PV systems. • Provide systems engineering and modeling support to promote the deployment of PV by the general public, federal and other agencies, and the PV industry. _____________________________________________________________________________________ 1. Introduction Systems Evaluation and Optimization activities at Sandia National Laboratories are closely linked to the needs of manufacturers and system integrators. They provide the laboratory and field- test information needed to benchmark the performance and reliability status of current PV systems and to identify opportunities for improved system and component design and integration in next-generation systems. These activities are key to meeting the DOE Solar Program Multi-Year Technical Plan (MYTP) targets, as well as the goals of the U.S. PV Industry Roadmap. The Systems Evaluation and Optimization Project is the focal point within the DOE Solar Program where the technology concerns of photovoltaic manufacturers, system integrators, and users converge. Manufacturers and integrators produce the components and systems that produce the end product, electric power, for the user. PV market development and subsequent growth depends on quality integration of components applied in an acceptable infrastructure to deliver safe, cost- effective, reliable electric power. 2. Technical Approach The work conducted by the Systems Evaluation and Optimization Project requires intimate understanding of component and system performance measurements, principles of systems engineering and reliability, and system requirements for specific market infrastructures. Project activities at Sandia National Laboratories are closely linked to the needs voiced by manufacturers and system integrators. The technical approach is to gather the laboratory and field-test information needed to benchmark the performance and reliability of state-of-the-art PV components and systems. Analyses examine performance and reliability characteristics of specific system configurations and test conditions. The aggregate information is incorporated into models that allow manufacturers and integrators to predict system performance and reliability, as well as to calculate system levelized energy cost. In addition, the information is applied to R&D opportunities for next-generation systems with improved system and component design, cost reductions, and optimized integration. These activities use the Systems-Driven Approach (SDA) and are key to meeting the Solar Program’s MYTP targets, as well as the goals of the U.S. PV Industry Roadmap. The Systems Evaluation and Optimization Task is divided into five subtasks. Module and Array Testing, primarily as a lab-based activity, supports system integrator’s needs for accurate array energy modeling. Comprehensive outdoor testing (performance benchmarking) is conducted on commercial PV modules with performance coefficients archived in a publicly available database. The long-term goal is to transition this testing responsibility to a qualified commercial testing laboratory.PDF Image | FY 2004 ANNUAL REPORT DOE Solar
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