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Inverter Testing employs two different approaches. The first is to perform detailed tests under a tightly controlled environment at SNL’s Distributed Energy Technologies Laboratory (DETL). Benchmark testing is performed on commercially available products, and proprietary development testing is performed on new designs. The second approach is to perform long-term testing in field environments that are monitored but not controlled. These sites include DETL and partner facilities at the Southeast and Southwest Regional Experiment Stations and at sites operated by the California Energy Commission's (CEC’s) Public Interest Energy Research (PIER) program. Common test methodologies are being evolved, and test results will be compared for consistency so that they can be incorporated into predictive models. Fielded System Testing uses outdoor test procedures and data-analysis techniques established for modules and applies them to system-performance testing and analysis performed in cooperation with system integrators or owners. This effort benchmarks array and system-level performance with all installation and environmental factors considered, and provides the information required to optimize system designs for performance, reliability, and safety. PV System Optimization applies knowledge gained through the previous subtasks to improve performance and reliability through optimized integration, moving closer to standardized system configurations. System Performance Modeling captures benchmarking data, information, and analyses and-applies the knowledge to develop a system performance model that predicts performance for specific design configurations in specific locations. Budget allocations by task are given below. Task Title System Performance Modeling Inverter Testing Module and Array Testing PV System Optimization Fielded System Testing 3. Results and Accomplishments FY 2004 Budget ($K) 164 372 396 194 190 • Conducted and documented detailed energy analysis and identified optimization opportunities for a commercial off-grid hybrid PV system by Sacred Power. • Completed the installation of a fully instrumented test capability for optimizing small system performance based on energy production. • Produced improved array performance models in collaboration with Maui Solar, PowerLight, and RWE Schott Solar through comparison of measured and modeled energy production. • Provided system consultation and modeling for 30-kW Amonix concentrators at Arizona Public Service. • Conducted and documented test and optimization of off-grid PV/wind hybrid for SunWize/NTUA. • Tested, analyzed, and documented energy production by BP Solar c-Si arrays in PNM grid-tied system. • Completed PV benchmarking plan, defining input to PV Systems Analysis Model (PVSAM). • Established Long-term inverter test activity with SERES, SWRES, and CEC/PIER. • Provided performance test results of 15 PV inverter products to manufacturers. • Completed benchmark tests on three commercial inverters, including models provided by CEC/PIER. • Developed a matrix of dependencies to be used as inputs to inverter-performance model development for PV SDA, Maui Software, and others. • Completed testing for validation study with NIST for commercial modules in BIPV applications.PDF Image | FY 2004 ANNUAL REPORT DOE Solar
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