Search Results - "Tatapudi, Sai"

Reliability of Microinverters for Photovoltaic Systems: High-Temperature Accelerated Testing with Fixed and Cyclic Power Stresses by Afridi, Muhammad, Tatapudi, Sai, Flicker, Jack, Srinivasan, Devarajan, Tamizhmani, Govindasamy

“…This paper presents an extended, accelerated reliability evaluation of forty microinverters, module-level power electronic (MLPE) units for photovoltaic (PV)…”
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Determination of Dominant Failure Modes Using FMECA on the Field Deployed c-Si Modules Under Hot-Dry Desert Climate by Shrestha, Sanjay Mohan, Mallineni, Jaya Krishna, Yedidi, Karan Rao, Knisely, Brett, Tatapudi, Sai, Kuitche, Joseph, TamizhMani, GovindaSamy

“…The failure and degradation modes of about 5900 crystalline-Si glass/polymer modules fielded for six to 16 years in three different photovoltaic (PV) power…”
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Interlaboratory Study to Determine Repeatability of the Damp-Heat Test Method for Potential-Induced Degradation and Polarization in Crystalline Silicon Photovoltaic Modules by Hacke, Peter, Terwilliger, Kent, Glick, Stephen, Tamizhmani, Govindasamy, Tatapudi, Sai, Stark, Cameron, Koch, Simon, Weber, Thomas, Berghold, Juliane, Hoffmann, Stephan, Koehl, Michael, Dietrich, Sascha, Ebert, Matthias, Mathiak, Gerhard

“…To test reproducibility of a technical specification under development for potential-induced degradation (PID) and polarization, three crystalline silicon…”
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NREL Efforts to Address Soiling on PV Modules by Simpson, Lin J., Muller, Matthew, Deceglie, Michael, Moutinho, Helio, Perkins, Craig, Jiang, C. S., Miller, David C., Micheli, Leonardo, Tamizhmani, Govindasamy, Vasista Tatapudi, Sai Ravi, Al-Jassim, Mowafak

“…Natural soiling has reduced the energy output of PV systems since the technology was first used. Projecting even a small ~4% average annual soiling loss (found…”
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Reliability evaluation of DC power optimizers for photovoltaic systems: Accelerated testing at high temperatures with fixed and cyclic power stresses by Afridi, Muhammad, Tatapudi, Sai, Flicker, Jack, Srinivasan, Devarajan, Tamizhmani, Govindasamy

“…•Accelerated lifetime testing of forty dc optimizers at high static temperatures with power cycling and fixed input power.•Estimation of field-use service…”
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Reduction of PV Module Temperature Using Thermally Conductive Backsheets by Oh, Jaewon, Rammohan, Balamurali, Pavgi, Ashwini, Tatapudi, Sai, Tamizhmani, Govindasamy, Kelly, George, Bolen, Michael

“…Photovoltaic (PV) modules typically operate at approximately 30 °C above ambient temperature on clear sunny days, irrespective of their location. Since the…”
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Toxicity Testing Database for Photovoltaic Modules by Li, Fang, Tatapudi, Sai Ravi, Shaw, Stephanie, Libby, Cara, Bicer, Bulent, Govindasamy, Tamizhmani

“…The purpose of this paper is to present and statistically analyze a TCLP (Toxicity Characteristics Leaching Procedure) database that was created from 94 TCLP…”
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Soiling, cleaning, and abrasion: The results of the 5-year photovoltaic glass coating field study by Bomber, Joanna, Einhorn, Asher, Engtrakul, Chaiwat, Lanaghan, Clare, Linger, Jeffrey, Micheli, Leonardo, Miller, David C., Morse, Joshua, Moutinho, Helio, Muller, Matthew, Newkirk, Jimmy M., Simpson, Lin, To, Bobby, Toth, Sarah, Curtis, Telia, Li, Fang, Tamizhmani, Govindasamy, Tatapudi, Sai, Alberts, Vivian, Al Nuaimi, Aaesha, Banda, Pedro, John, Jim J., Mathiak, Gerhard, Safieh, Ahmad O.M., Stefancich, Marco, Alabdulrazzaq, Bader, Al-Qattan, Ayman, Bhaduri, Sonali, Kottantharayil, Anil, Bourne, Ben, deFreitas, Zoe, Farina, Fabrizio, Kimball, Greg, Hoffman, Adam

“…External contamination (“soiling”) of the incident surface is a major limiting factor for solar technologies. A 5-year field glass coupon study was conducted…”
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Preliminary Evaluation of Aluminum Foil Compatibility with EVA and POE Encapsulants by Li, Fang, Tatapudi, Sai Ravi, TamizhMani, GovindaSamy

“…Emerging photovoltaic (PV) technologies with inexpensive cell interconnect material will help to further reduce the manufacturing costs of solar cells…”
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Effect of tilt angle on soiling of photovoltaic modules by Cano, Jose, John, Jim Joseph, Tatapudi, Sai, TamizhMani, GovindaSamy

“…Soiling on PV modules is known to reduce PV system performance, mainly in dry arid climatic conditions. Cleaning with water or other means may become an…”
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Sampling Methods for Toxicity Testing of PV Modules for End-of-Life Decisions by TamizhMani, GovindaSamy, Shaw, Stephanie, Libby, Cara, Sinha, Parikhit, Curtis, Telia, Tatapudi, Sai, Bicer, Bulent

“…The present work is a continuation of our research studies published at the IEEE PVSC in 2018 and 2019. In 2018 and 2019, we reported mechanical cutting and…”
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Reduction of PV Module Temperature Using Thermally Conductive Backsheets by Oh, Jaewon, Rammohan, Balamurali, Pavgi, Ashwini, Tatapudi, Sai, Tamizhmani, Govindasamy, Kelly, George, Bolen, Michael

“…Photovoltaic (PV) modules typically operate at approximately 30 °Cabove ambient temperature on clear sunny days, irrespective of their location. Since the…”
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Performance and Reliability of Thermally Conductive Backsheets (TCB) by Pavgi, Ashwini, Oh, Jaewon, Tatapudi, Sai, TamizhMani, GovindaSamy

“…Thermally conductive backsheets (TCBs) have a potential to reduce the module operating temperature (performance) and increase the lifetime (reliability) of…”
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Influence of soiling layer on quantum efficiency and spectral reflectance on crystalline silicon PV modules by John, Jim Joseph, Tatapudi, Sai, Tamizhmani, Govindasamy

“…Reduction in transmittance of glass superstrate due to soiling on PV modules is studied by various groups throughout the world. However, the soil layer changes…”
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Interrelation between Encapsulant Browning and Metallization Degradation: Experiments and Simulation by Li, Fang, Gopakumar, Abhijit, Tatapudi, Sai Ravi, Davis, Kristopher O., TamizhMani, GovindaSamy

“…Solar cell simulation has increasingly been used to investigate the field degradation mechanisms of photovoltaic modules. In this study, we investigate the…”
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Thermal Uniformity Mapping of PV Modules and Plants by Pavgi, Ashwini, Oh, Jaewon, Kuitche, Joseph, Tatapudi, Sai, TamizhMani, GovindaSamy

“…The conventional assumption of all the cells in a module and all the modules in a plant is operating at a single temperature. This work indicates that it is…”
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Degradation of Solder Bonds in Field Aged PV Modules: Correlation with Series Resistance Increase by Tummala, Abhishiktha, Jaewon Oh, Tatapudi, Sai, TamizhMani, GovindaSamy

“…One of the major defects that can cause significant power loss is the degradation of interconnect metallization system (IMS) comprised of cell metallization…”
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Field Inspection of PV Modules: Quantitative Determination of Performance Loss due to Cell Cracks Using EL Images by Rodriguez Castaneda, Carlos A., Chattopadhyay, Shashwata, Oh, Jaewon, Tatapudi, Sai, TamizhMani, Govindasamy, Hu, Hailin

“…Electroluminescence (EL) imaging has been used by the operation and maintenance companies for a qualitative detection of cells cracks in the fielded…”
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Defect and safety inspection of 6 PV technologies from 56,000 modules representing 257,000 modules in 4 climatic regions of the United States by Tatapudi, Sai, Libby, Cara, Raupp, Christopher, Srinivasan, Devarajan, Kuitche, Joseph, Bicer, Bulent, TamizhMani, Govindasamy

“…Defect and safety inspections were performed on about 56,000 photovoltaic (PV) modules representing 257,000 modules of multiple technologies (mono-Si, poly-Si,…”
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Degradation rate evaluation of multiple PV technologies from 59,000 modules representing 252,000 modules in four climatic regions of the United States by Raupp, Christopher, Libby, Cara, Tatapudi, Sai, Srinivasan, Devarajan, Kuitche, Joseph, Bicer, Bulent, TamizhMani, Govindasamy

“…With the recent extension of the U.S. federal investment tax credit (ITC), more photovoltaic (PV) power plants are expected to be installed in ever increasing…”
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