The state of the art in PV system monitoring is relatively simplistic, relying either on comparisons of outputs between various parts of the system (e.g., inverters) or on an evaluation of a performance metric that normalizes output to available irradiance and other environmental conditions. However, neither of these methods is very effective in discovering the source […]
The PV Performance Modeling Collaborative (PVPMC) is excited to announce the launch of our newly redesigned Web site located at the new address: https://pvpmc.sandia.gov.
The new site’s homepage welcomes visitors with a clean uncluttered design, with featured content focused on our mission to provide you with the most accurate information, strengthen partner relations, and share our […]
The Albuquerque Section of the Institute of Electrical and Electronics Engineers (IEEE) has selected Dr. Jose Luis Cruz-Campa as the recipient of the 2014 Outstanding Young Engineer Award for his outstanding contributions to the electrical engineering profession. A key aspect of Jose Luis’ research program is the use of microfabrication techniques, more commonly used in […]
Sandia Labs, Front Edge Technology, Inc., Pacific Northwest National Lab, Univ. of California–Los Angeles: Micro Power Source
What if the batteries had the ability to recharge themselves? Just as on rooftops, a PV surface could convert the sunlight to electricity to charge the storage device.
Sandia, working with Pacific Northwest National Laboratory (PNNL) and University of California at Los Angeles (UCLA), has developed the Micro Power Source, a system that integrates a lithium-ion-based […]
ECIS, Lockheed Martin Aeronautics, University of New Mexico, and Davidson College: Multifunctional Optical Coatings by Rapid Self-Assembly
Optical coatings appear on items ranging from electronic devices, photographic lenses, and windows to aircraft sensors, photovoltaic cells, and goggles for troops in the field. The coatings protect or alter the way a material reflects and/or transmits light. However, the two primary methods of applying coatings—sputtering and chemical vapor deposition (CVD)—are expensive, require highly specialized […]
March 6, 2013
14:00 — 15:00 Eastern
The Energy Storage Technology Advancement Partnership project of the Clean Energy States Alliance (CESA) and the Department of Energy is presenting a webinar featuring a case study conducted by Sandia National Laboratory on the Island of Maui and its goals of increasing its renewable energy capacity and the role of […]
A recently released Sandia National Laboratories report, “Suggested Guidelines for Assessment of DG Unintentional Islanding Risk,” outlines a procedure to help utility distribution engineers determine the risk of unintentional islanding in distributed energy generation installations. By providing a quick and reliable way to identify situations in which such risk is negligible, Sandia’s approach can help […]
Degradation Signature Characterization
The data from the characterization of parts before and after stress testing will be analyzed for useful fingerprints that indicate degradation and remaining lifetime. One approach is to apply the characterization results to simulations to look for corresponding changes in behavioral parameters of the inverters. Figure 1 describes one potential behavioral parameter, voltage […]
Thermal Management Subsystem
Thermal management of inverter systems and internal components is critical for ensuring lasting performance reliability. Research is currently being carried out to more accurately characterize inverter components and system topologies of varying scales. This work includes:
Thermal/fluid phenomena of internal inverter components, and their impact on electrical performance and reliability.
Finite Element Analysis (FEA)/Computational Fluid […]