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PV System Evaluation and Optimization Performing Organization: Sandia National Laboratories (SNL) Key Technical Contact: David King, 505-844-8220, dlking@sandia.gov DOE HQ Technology Manager: Dan Ton, 202-586-4618, dan.ton@ee.doe.gov FY 2005 Budget: $966K ____________________________________________________________________________________ Objectives • Design, implement, and operate a versatile fully instrumented PV System Optimization Laboratory (PV-SOL) for system and inverter performance and aging research. • Develop, validate, and apply new testing and analysis procedures, based on energy production, needed to verify and optimize the performance and reliability of PV systems. • Provide manufacturers, integrators, and software developers accurate comprehensive test data required to model and verify system, module, and inverter performance. • Coordinate a multi-site research effort to evaluate the long-term field aging behavior of inverters, in collaboration with inverter manufacturers and the Florida Solar Energy Center (FSEC), Southwest Technology Development Institute (SWTDI), and BEW Engineering. • Collect and analyze system installation and operating information in collaboration with established system integrators to establish performance and cost baselines. • Investigate advanced PV system concepts, manufacturing methods, and deployment strategies that improve performance, reliability, and cost, and accelerate deployment. Accomplishments • Implemented the PV-SOL laboratory, which has the capability to perform detailed performance and long-term reliability research on 14 separate nominally 3-kW PV systems with multiple array/inverter combinations. • Completed baseline performance characterization on 14 inverters from 5 manufacturers as part of a coordinated long-term, inverter-aging project at FSEC, SWTDI, and SNL. • Provided comprehensive inverter testing in support of DOE high-reliability inverter development contracts with General Electric (GE) and Xantrex. • Conceived and promoted the concept of fully integrated “PV system manufacturing” as a logical approach to lowering cost, improving reliability, and accelerating system deployment. Initiated investigation of 3-kW system structural design concepts at New Mexico State University (NMSU). • Investigated new PV market sectors (~200 MW/yr) for pre-manufactured PV systems through discussions with a major metal building manufacturer (Star Buildings) and major auto parking companies (Central Parking Corporation, Parking Company of America Airports). • Characterized additional modules and arrays. SNL’s “module database,” used by integrators and in commercial PV system design software, now includes 180 commercial modules and 12 arrays. • SNL’s module/array outdoor testing and data analysis procedures are being implemented at the Arizona State University (ASU) Photovoltaic Testing Lab (PTL), enabling staff to generate coefficients for the “module database.” • Completed final effort to validate SNL’s module-characterization procedures and array- performance model in cooperation with the National Institute of Standards and Testing (NIST) via a Work for Others agreement. Presented at a special forum on modeling and received American Society for Testing and Materials (ASME) “best paper” award at the International Solar Energy Society (ISES) 2005 conference. Future Directions • Continue the concerted effort to enhance and document PV system and inverter performance and reliability research through coordinated efforts in the PV-SOL with module/inverter manufacturers, integrators, FSEC, SWTDI, and BEW Engineering. Photovoltaic R&D 77 Technology DevelopmentPDF Image | DOE Solar Energy Technologies Program
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