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1

DOE High Performance Concentrator PV Project  

SciTech Connect (OSTI)

Much in demand are next-generation photovoltaic (PV) technologies that can be used economically to make a large-scale impact on world electricity production. The U.S. Department of Energy (DOE) initiated the High-Performance Photovoltaic (HiPerf PV) Project to substantially increase the viability of PV for cost-competitive applications so that PV can contribute significantly to both our energy supply and environment. To accomplish such results, the National Center for Photovoltaics (NCPV) directs in-house and subcontracted research in high-performance polycrystalline thin-film and multijunction concentrator devices with the goal of enabling progress of high-efficiency technologies toward commercial-prototype products. We will describe the details of the subcontractor and in-house progress in exploring and accelerating pathways of III-V multijunction concentrator solar cells and systems toward their long-term goals. By 2020, we anticipate that this project will have demonstrated 33% system efficiency and a system price of $1.00/Wp for concentrator PV systems using III-V multijunction solar cells with efficiencies over 41%.

McConnell, R.; Symko-Davies, M.

2005-08-01T23:59:59.000Z

2

Low Cost High Concentration PV Systems for Utility Power Generation...  

Broader source: Energy.gov (indexed) [DOE]

Electricity On Flat Commercial Rooftops,Fully Automated Systems Technology, Concentrating Solar Panels: Bringing the Highest Power and Lowest Cost to the Rooftop Practical...

3

Sandia National Laboratories: PV concentrators  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systemsconcentrators Sandians Win

4

Evaluation of tracking flat plate and concentrator PV systems  

SciTech Connect (OSTI)

Arizona Public Service Company has conducted side-by-side field tests of most of the leading tracking flat plate and concentrating PV technologies. The results verify the added value due to tracking, but show that additional reliability improvements are needed in most cases. Concentrator PV systems can be high performers in sunny regions. In addition, a novel inverter system design by Raytheon has demonstrated excellent performance and promises to be more reliable and have lower cost than competing technologies.

Lepley, T. [Phasor Energy Co., Phoenix, AZ (United States); Hammond, B.; Harris, A. [Arizona State Univ., Tempe, AZ (United States)

1997-12-31T23:59:59.000Z

5

Under Contract No. DE-AC36-83CH10093 LARGE-AREA, HIGH-INTENSITY PV ARRAYS FOR SYSTEMS USING DISH CONCENTRATING OPTICS  

E-Print Network [OSTI]

ABSTRACT: In this paper, we report on our efforts to fabricate monolithic interconnected modules (MIMs) using III-V semiconductors with bandgaps appropriate for the terrestrial solar spectrum. The small size of the component cells comprising the MIM allows for operation at extremely high flux densities and relaxes the requirement for a small spot-size to be generated by the optics. This makes possible a PV option for the large dish concentrator systems that have been developed by the solar thermal community for use with Stirling engines. Additionally, the highly effective back-surface reflector integrated into the MIM design is an effective tool for thermal management of the array. Development of this technology would radically alter the projections for PV manufacturing capacity because of the potential for extremely high power generation per unit area of semiconductor material.

J. S. Ward; A. Duda; K. Zweibel; T. J. Coutts; J. S. Ward; A. Duda; K. Zweibel; T. J. Coutts

6

High Resolution PV Power Modeling for Distribution Circuit Analysis  

SciTech Connect (OSTI)

NREL has contracted with Clean Power Research to provide 1-minute simulation datasets of PV systems located at three high penetration distribution feeders in the service territory of Southern California Edison (SCE): Porterville, Palmdale, and Fontana, California. The resulting PV simulations will be used to separately model the electrical circuits to determine the impacts of PV on circuit operations.

Norris, B. L.; Dise, J. H.

2013-09-01T23:59:59.000Z

7

A 20-SUN HYBRID PV-THERMAL LINEAR MICRO-CONCENTRATOR SYSTEM FOR URBAN ROOFTOP APPLICATIONS  

E-Print Network [OSTI]

A 20-SUN HYBRID PV-THERMAL LINEAR MICRO-CONCENTRATOR SYSTEM FOR URBAN ROOFTOP APPLICATIONS D Walter-mounted system couples the benefits of distributed PV electricity generation with the on-site generation of thermal energy in a temperature range of 60 to 220 ¬ļC. This is ideal for applications ranging from

8

PV Solar Site Assessment (Milwaukee High School)  

Broader source: Energy.gov [DOE]

The purpose of this assessment is to provide site-specific information on how a solar electric (also referred to as a photovoltaic, or PV) system would perform at your location, including information on estimated physical size, rated output, energy production, costs, financial incentives and mounting options. Site assessors are required to present unbiased information and may not recommend contractors or products.

9

Sandia National Laboratories: high PV deployment level  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia,evaluatingfull moduleresources gridstandby positionshigh PV

10

Long-Term Modeling of Solar Energy: Analysis of Concentrating Solar Power (CSP) and PV Technologies  

SciTech Connect (OSTI)

This report presents an overview of research conducted on solar energy technologies and their implementation in the ObjECTS framework. The topics covered include financing assumptions and selected issues related to the integration of concentrating thermal solar power (CSP) and photovoltaics PV technologies into the electric grid. A review of methodologies for calculating the levelized energy cost of capital-intensive technologies is presented, along with sensitivity tests illustrating how the cost of a solar plant would vary depending on financing assumptions. An analysis of the integration of a hybrid concentrating thermal solar power (CSP) system into the electric system is conducted. Finally a failure statistics analysis for PV plants illustrates the central role of solar irradiance uncertainty in determining PV grid integration characteristics.

Zhang, Yabei; Smith, Steven J.

2007-08-16T23:59:59.000Z

11

Kauai, Hawaii: Solar Resource Analysis and High-Penetration PV...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

industry standards, it is recommended that the PV system be approved by Go Solar California. 4 PV Size and Performance The PV arrays must be installed in unshaded locations on...

12

CONTINUOUS ROLL-TO-ROLL SERPENTINE DEPOSITION FOR HIGH THROUGHPUT a-Si PV MANUFACTURING  

E-Print Network [OSTI]

a number of advantages in a fully automated high throughput PV module production plant [l-18--a significant problem in many glass substrate amorphous silicon alloy PV module manufacturing plants. ECDCONTINUOUS ROLL-TO-ROLL SERPENTINE DEPOSITION FOR HIGH THROUGHPUT a-Si PV MANUFACTURING M. Izu, H

Deng, Xunming

13

Integrating High Penetrations of PV into Southern California: Year 2 Project Update; Preprint  

SciTech Connect (OSTI)

Southern California Edison (SCE) is well into a five-year project to install a total of 500 MW of distributed photovoltaic (PV) energy within its utility service territory. Typical installations to date are 1-3 MW peak rooftop PV systems that interconnect to medium-voltage urban distribution circuits or larger (5 MW peak) ground-mounted systems that connect to medium-voltage rural distribution circuits. Some of the PV system interconnections have resulted in distribution circuits that have a significant amount of PV generation compared to customer load, resulting in high-penetration PV integration scenarios. The National Renewable Energy Laboratory (NREL) and SCE have assembled a team of distribution modeling, resource assessment, and PV inverter technology experts in order to investigate a few of the high-penetration PV distribution circuits. Currently, the distribution circuits being studied include an urban circuit with a PV penetration of approximately 46% and a rural circuit with a PV penetration of approximately 60%. In both cases, power flow on the circuit reverses direction, compared to traditional circuit operation, during periods of high PV power production and low circuit loading. Research efforts during year two of the five-year project were focused on modeling the distribution system level impacts of high-penetration PV integrations, the development and installation of distribution circuit data acquisition equipment appropriate for quantifying the impacts of high-penetration PV integrations, and investigating high-penetration PV impact mitigation strategies. This paper outlines these research efforts and discusses the following activities in more detail: the development of a quasi-static time-series test feeder for evaluating high-penetration PV integration modeling tools; the advanced inverter functions being investigated for deployment in the project's field demonstration and a power hardware-in-loop test of a 500-kW PV inverter implementing a limited set of advanced inverter functions.

Mather, B.; Neal, R.

2012-08-01T23:59:59.000Z

14

Analysis of concentrating PV-T systems for the commercial/industrial sector. Volume II. PV-T state-of-the-art survey and site/application pair selection and analysis  

SciTech Connect (OSTI)

As part of a project to develop feasibility assessments, design procedures, and reference designs for total energy systems that could use actively cooled concentrating photovoltaic collectors, a survey was conducted to provide an overview of available photovoltaic-thermal (PV-T) technology. General issues associated with the design and installation of a PV-T system are identified. Electrical and thermal efficiencies for the line-focus Fresnel, the linear parabolic trough, and the point-focus Fresnel collectors are specified as a function of operating temperature, ambient temperature, and insolation. For current PV-T technologies, the line-focus Fresnel collector proved to have the highest thermal and electrical efficiencies, lowest array cost, and lowest land area requirement. But a separate feasibility analysis involving 11 site/application pairs showed that for most applications, the cost of the photovoltaic portion of a PV-T system is not recovered through the displacement of an electrical load, and use of a thermal-only system to displace the thermal load would be a more economical alternative. PV-T systems are not feasible for applications that have a small thermal load, a large steam requirement, or a high load return temperature. SAND82-7157/3 identifies the technical issues involved in designing a photovoltaic-thermal system and provides guidance for resolving such issues. Detailed PV-T system designs for three selected applications and the results of a trade-off study for these applications are presented in SAND82-7157/4. A summary of the major results of this entire study and conclusions concerning PV-T systems and applications is presented in SAND82-7157/1.

Schwinkendorf, W.E.

1984-09-01T23:59:59.000Z

15

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

solar PV and distributed generation. UTILITY RATE DESIGN ANDutility concerns that a high penetration of inverter-based solar energy systems along with other distributed generation

Hill, Steven Craig

2013-01-01T23:59:59.000Z

16

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

paper .pdf [148] Solar PV Carousel Trackers For Buildingtrackers may experience a capacity factor benefit of between 25-30% (Campbell 2010b) in high solar

Hill, Steven Craig

2013-01-01T23:59:59.000Z

17

Thermal and electrical performance of a concentrating PV/Thermal collector: results from the ANU CHAPS collector  

E-Print Network [OSTI]

Thermal and electrical performance of a concentrating PV/Thermal collector: results from the ANU CHAPS collector J.S. Coventry, E. Franklin and A. Blakers Centre for Sustainable Energy Systems 0506 E-mail: joe@faceng.anu.edu.au Abstract The combined heat and power solar (CHAPS) collector under

18

Advanced Inverter Technology for High Penetration Levels of PV Generation in Distribution Systems  

SciTech Connect (OSTI)

This subcontract report was completed under the auspices of the NREL/SCE High-Penetration Photovoltaic (PV) Integration Project, which is co-funded by the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) and the California Solar Initiative (CSI) Research, Development, Demonstration, and Deployment (RD&D) program funded by the California Public Utility Commission (CPUC) and managed by Itron. This project is focused on modeling, quantifying, and mitigating the impacts of large utility-scale PV systems (generally 1-5 MW in size) that are interconnected to the distribution system. This report discusses the concerns utilities have when interconnecting large PV systems that interconnect using PV inverters (a specific application of frequency converters). Additionally, a number of capabilities of PV inverters are described that could be implemented to mitigate the distribution system-level impacts of high-penetration PV integration. Finally, the main issues that need to be addressed to ease the interconnection of large PV systems to the distribution system are presented.

Schauder, C.

2014-03-01T23:59:59.000Z

19

NREL/SCE High-Penetration PV Integration Project: Report on Field Demonstration of Advanced Inverter Functionality in Fontana, CA  

SciTech Connect (OSTI)

The National Renewable Energy Laboratory/Southern California Edison High-Penetration PV Integration Project is (1) researching the distribution system level impacts of high-penetration photovoltaic (PV) integration, (2) determining mitigation methods to reduce or eliminate those impacts, and (3) seeking to demonstrate these mitigation methods on actual high-penetration PV distribution circuits. This report describes a field demonstration completed during the fall of 2013 on the Fontana, California, study circuit, which includes a total of 4.5 MW of interconnected utility-scale rooftop PV systems. The demonstration included operating a 2-MW PV system at an off-unity power factor that had been determined during previously completed distribution system modeling and PV impact assessment analyses. Data on the distribution circuit and PV system operations were collected during the 2-week demonstration period. This demonstration reinforces the findings of previous laboratory testing that showed that utility-scale PV inverters are capable of operating at off-unity power factor to mitigate PV impacts; however, because of difficulties setting and retaining PV inverter power factor set points during the field demonstration, it was not possible to demonstrate the effectiveness of off-unity power factor operation to mitigate the voltage impacts of high-penetration PV integration. Lessons learned from this field demonstration are presented to inform future field demonstration efforts.

Mather, B.

2014-08-01T23:59:59.000Z

20

Kauai, Hawaii: Solar Resource Analysis and High Penetration PV Potential  

SciTech Connect (OSTI)

Overview of the solar resource assessment conducted by the National Renewable Energy Laboratory (NREL) in cooperation with Kauai Island Utility Cooperative (KIUC) in Hawaii to determine the technical feasibility of increasing the contribution of solar renewable energy generation on the island of Kauaii through the use of photovoltaic (PV) arrays. The analysis, which was performed using a custom version of NREL's In My Back Yard (IMBY) software tool, showed that there is potential to generate enough energy to cover the peak load as reported for Kauai in 2007.

Helm, C.; Burman, K.

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

High-Penetration PV Deployment in the Arizona Public Service System, Phase 1 Update: Preprint  

SciTech Connect (OSTI)

In an effort to better understand the impacts of high penetrations of photovoltaic generators on distribution systems, Arizona Public Service and its partners have begun work on a multi-year project to develop the tools and knowledge base needed to safely and reliably integrate high penetrations of utility- and residential-scale photovoltaics (PV). Building upon the APS Community Power Project -- Flagstaff Pilot, this project will analyze the impact of PV on a representative feeder in northeast Flagstaff. To quantify and catalog the effects of the estimated 1.3 MW of PV that will be installed on the feeder (both smaller units at homes as well as large, centrally located systems), high-speed weather and electrical data acquisition systems and digital 'smart' meters are being designed and installed to facilitate monitoring and to build and validate comprehensive, high-resolution models of the distribution system. These models will be used to analyze the impacts of the PV on distribution circuit protection systems (including anti-islanding), predict voltage regulation and phase balance issues, and develop volt/var control schemes. This paper continues from a paper presented at the 2011 IEEE PVSC conference that introduces the project and describes some of the preliminary consideration, as well as project plans and early results. This paper gives a status update of the project and presents selected results from Phase 2 of the project. It discusses baseline feeder modeling, load allocation, data acquisition, utility-scale PV integration, preliminary model validation, and plans for future phases.

Hambrick, J.; Narang, D.

2012-06-01T23:59:59.000Z

22

High Penetration of Photovoltaic (PV) Systems into the Distribution Grid, Workshop Report, February 24-25, 2009  

SciTech Connect (OSTI)

Outcomes from the EERE Solar Energy Technologies Program workshop on high penetration of photovoltaic (PV) systems into the distribution grid, Feb. 24-25, 2009, Ontario, Calif.

Not Available

2009-06-01T23:59:59.000Z

23

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

in the design of larger PV plants. Chapter 2 will discussEdison central station PV plant at Hesperia, California,PV components. When a PV plant or installation is proposed

Hill, Steven Craig

2013-01-01T23:59:59.000Z

24

Analysis of the Impacts of Distribution-Connected PV Using High-Speed Data Sets: Preprint  

SciTech Connect (OSTI)

This paper, presented at the IEEE Green Technologies Conference 2013, utilizes information from high resolution data acquisition systems developed at the National Renewable Energy Laboratory and deployed on a high-penetration PV distribution system to analyze the variability of different electrical parameters. High-resolution solar irradiance data is also available in the same area which is used to characterize the available resource and how it affects the electrical characteristics of the study circuit. This paper takes a data-driven look at the variability caused by load and compares those results against times when significant PV production is present. Comparisons between the variability in system load and the variability of distributed PV generation are made.

Bank, J.; Mather, B.

2013-03-01T23:59:59.000Z

25

Low Cost High Concentration PV Systems for Utility Power Generation |  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10IO1OP001Long-Term Storage of Cesium1940sofof10

26

OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY  

E-Print Network [OSTI]

OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY Richard Perez-shore wind and PV generation using the city of New York as a test case. While wind generation is not known the source of the energy that can meet the demand. While the peak-time availability of wind generation

Perez, Richard R.

27

Power Systems Engineering Research Center Modeling, Analysis and Deployment of High PV  

E-Print Network [OSTI]

and equipment using GIS data, loads using AMI data and PV systems using measured PV output from extensive data electronics and grid integration of renew- able resources mainly solar PV and wind. Dr. Ayyanar received

Van Veen, Barry D.

28

Multijunction Photovoltaic Technologies for High-Performance Concentrators: Preprint  

SciTech Connect (OSTI)

Multijunction solar cells provide high-performance technology pathways leading to potentially low-cost electricity generated from concentrated sunlight. The National Center for Photovoltaics at the National Renewable Energy Laboratory has funded different III-V multijunction solar cell technologies and various solar concentration approaches. Within this group of projects, III-V solar cell efficiencies of 41% are close at hand and will likely be reported in these conference proceedings. Companies with well-developed solar concentrator structures foresee installed system costs of $3/watt--half of today's costs--within the next 2 to 5 years as these high-efficiency photovoltaic technologies are incorporated into their concentrator photovoltaic systems. These technology improvements are timely as new large-scale multi-megawatt markets, appropriate for high performance PV concentrators, open around the world.

McConnell, R.; Symko-Davies, M.

2006-05-01T23:59:59.000Z

29

High efficiency battery converter with SiC devices for residential PV Cam Pham, Remus Teodorescu, Tamas Kerekes and Laszlo Mathe  

E-Print Network [OSTI]

High efficiency battery converter with SiC devices for residential PV systems Cam Pham, Remus, where the generated energy price is relatively high. Smart PV systems with internal battery storage launched a financial support program for residential PV systems with battery storage [2]. Furthermore

Teodorescu, Remus

30

Sandia National Laboratories: Achieving High Pernetrations of PV  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0 ResourceAwardsSafeguardsEngineersSandia/New MexicoAchieving High

31

Modelling acceptance of sunlight in high and low photovoltaic concentration  

SciTech Connect (OSTI)

A simple model incorporating linear radiation characteristics, along with the optical trains and geometrical concentration ratios of solar concentrators is presented with performance examples for optical trains of HCPV, LCPV and benchmark flat-plate PV.

Leutz, Ralf, E-mail: ralf.leutz@leopil.com [Leutz Optics and Illumination UG (haftungsbeschršnkt), Marburg (Germany)

2014-09-26T23:59:59.000Z

32

NREL/SCE High Penetration PV Integration Project: FY13 Annual Report  

SciTech Connect (OSTI)

In 2010, the National Renewable Energy Laboratory (NREL), Southern California Edison (SCE), Quanta Technology, Satcon Technology Corporation, Electrical Distribution Design (EDD), and Clean Power Research (CPR) teamed to analyze the impacts of high penetration levels of photovoltaic (PV) systems interconnected onto the SCE distribution system. This project was designed specifically to benefit from the experience that SCE and the project team would gain during the installation of 500 megawatts (MW) of utility-scale PV systems (with 1-5 MW typical ratings) starting in 2010 and completing in 2015 within SCE's service territory through a program approved by the California Public Utility Commission (CPUC). This report provides the findings of the research completed under the project to date.

Mather, B. A.; Shah, S.; Norris, B. L.; Dise, J. H.; Yu, L.; Paradis, D.; Katiraei, F.; Seguin, R.; Costyk, D.; Woyak, J.; Jung, J.; Russell, K.; Broadwater, R.

2014-06-01T23:59:59.000Z

33

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

with the growth of wind power and PV. TenneT is one ofApril 2011 has shown that wind power alone would extend thethe actual combination of wind power and PV has doubled the

Hill, Steven Craig

2013-01-01T23:59:59.000Z

34

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

the DC electric energy from the solar panels or modules intosolar energy available is subject to change with irradiance, temperature, and aging of PV panelsrooftop solar panels. While the renewable energy PV

Hill, Steven Craig

2013-01-01T23:59:59.000Z

35

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

PV on WWT plant ponds can be a valuable energy efficiencyPV application for Waste Water Treatment (WWT) plants and its potential role in meeting Californiaís RPS and energy efficiency

Hill, Steven Craig

2013-01-01T23:59:59.000Z

36

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

increasing levels of renewable energy production will resultpanels. While the renewable energy PV production that is on

Hill, Steven Craig

2013-01-01T23:59:59.000Z

37

Analysis of concentrating PV-T systems for the commercial/industrial sector. Volume III. Technical issues and design guidance  

SciTech Connect (OSTI)

This report provide appropriate guidance for addressing the major technical issues associated with the design and installation of a photovoltaic-thermal (PV-T) system. Nomographs are presented for developing preliminary sizing and costing, and issues associated with specific components and the overall design of the electrical and mechanical system are discussed. SAND82-7157/2 presents a review of current PV-T technology and operating systems and a study of potential PV-T applications. Detailed PV-T system designs for three selected applications and the results of a trade-off study for these applications are presented in SAND82-7157/4. A summary of the major results of this entire study and conclusions concerning PV-T systems and applications is presented in SAND82-7157/1.

Schwinkendorf, W.E.

1984-09-01T23:59:59.000Z

38

Value Proposition for High Lifetime (p-type) and Thin Silicon Materials in Solar PV Applications: Preprint  

SciTech Connect (OSTI)

Most silicon PV road maps forecast a continued reduction in wafer thickness, despite rapid declines in the primary incentive for doing so -- polysilicon feedstock price. Another common feature of most silicon-technology forecasts is the quest for ever-higher device performance at the lowest possible costs. The authors present data from device-performance and manufacturing- and system-installation cost models to quantitatively establish the incentives for manufacturers to pursue advanced (thin) wafer and (high efficiency) cell technologies, in an age of reduced feedstock prices. This analysis exhaustively considers the value proposition for high lifetime (p-type) silicon materials across the entire c-Si PV supply chain.

Goodrich, A.; Woodhouse, M.; Hacke, P.

2012-06-01T23:59:59.000Z

39

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

FERC) and the National Electrical Regulatory Corporation (Of Solar PV and CPV Onto The Electrical Grid By Steven Craig24† Electrical,†Controls†&†

Hill, Steven Craig

2013-01-01T23:59:59.000Z

40

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

adopted a program- the California Solar Initiative (CSI) -of the impact of the California Solar Initiative (CSI), andissues with rooftop solar PV in California are: 1) Utility

Hill, Steven Craig

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Development of New Low-Cost, High-Performance, PV Module Encapsulant/Packaging Materials: Final Technical Progress Report, 22 October 2002 - 15 November 2007  

SciTech Connect (OSTI)

Report on objectives to work with U.S.-based PV module manufacturers (c-Si, a-Si, CIS, other thin films) to develop/qualify new low-cost, high-performance PV module encapsulant/packaging materials, and processes using the packaging materials.

Tucker, R.

2008-04-01T23:59:59.000Z

42

A High Efficiency DC-DC Converter Topology Suitable for Distributed Large Commercial and Utility Scale PV Systems  

SciTech Connect (OSTI)

In this paper a DC-DC power converter for distributed photovoltaic plant architectures is presented. The proposed converter has the advantages of simplicity, high efficiency, and low cost. High efficiency is achieved by having a portion of the input PV power directly fed forward to the output without being processed by the converter. The operation of this converter also allows for a simplified maximum power point tracker design using fewer measurements

Mohammed S. Agamy; Maja Harfman-Todorovic; Ahmed Elasser; Robert L. Steigerwald; Juan A. Sabate; Song Chi; Adam J. McCann; Li Zhang; Frank Mueller

2012-09-01T23:59:59.000Z

43

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

problems are encountered. There are utility concerns that a high penetration of inverter-based solar energyproblem with a non-imaging 2D Fresnel concentrator. Lorenzo (1981) evaluated chromatic aberrations in solar energy

Hill, Steven Craig

2013-01-01T23:59:59.000Z

44

Final Technical Report - Recovery Act: Organic Coatings as Encapsulants for Low Cost, High Performance PV Modules  

SciTech Connect (OSTI)

The objective of this project was to evaluate the feasibility of utilizing PPG's commercial organic coatings systems as efficient, modernized encapsulants for low cost, high performance, thin film photovoltaic modules. Our hypothesis was that the combination of an anticorrosive coating with a more traditional barrier topcoat would mitigate many electrochemical processes that are now responsible for the significant portion of photovoltaic (PV) failures, thereby nullifying the extremely high moisture barrier requirements of currently used encapsulation technology. Nine commercially available metal primer coatings and six commercially available top coatings were selected for screening. Twenty-one different primer/top coat combinations were evaluated. The primer coatings were shown to be the major contributor to corrosion inhibition, adhesion, and barrier properties. Two primer coatings and one top coating were downselected for testing on specially-fabricated test modules. The coated test modules passed initial current leakage and insulation testing. Damp Heat testing of control modules showed visible corrosion to the bus bar metal, whereas the coated modules showed none. One of the primer/top coat combinations retained solar power performance after Damp Heat testing despite showing some delamination at the EVA/solar cell interface. Thermal Cycling and Humidity Freeze testing resulted in only one test module retaining its power performance. Failure modes depended on the particular primer/top coating combination used. Overall, this study demonstrated that a relatively thin primer/top coating has the potential to replace the potting film and backsheet in crystalline silicon-based photovoltaic modules. Positive signals were received from commercially available coatings developed for applications having performance requirements different from those required for photovoltaic modules. It is likely that future work to redesign and customize these coatings would result in a coating system meeting the requirements for photovoltaic module encapsulation.

Stuart Hellring; Jiping Shao; James Poole

2011-12-05T23:59:59.000Z

45

High-Efficiency, Ultra-High Pressure Electrolysis With Direct Linkage to PV Arrays - Phase II SBIR Final Report  

SciTech Connect (OSTI)

In this Phase II SBIR, Avalence LLC met all proposed objectives. Because the original Phase III partner pulled out of the project, several alternative sites/partners were used to achieve the goals. The on-site operation and PV measurements were performed on a smaller unit at General Motors proving grounds in Milford, MI. The actual equipment targeted for AC Transit will be delivered to Robins Air Force Base in September of 2009 to support the fueling of a fuel cell powered fork lift and 'Bobcat'. In addition the Transit Agency Site Requirements and Constraints were performed for the Greater New Haven Transit District (GNHTD) for the Hamden, CT Public Works building that will be the site for a similar fueling station to be delivered in the Spring of 2010. The Detailed Design Package was also based on the Design for the GNHTD unit. The work on this project successfuly demonstrated the potential of Avalence's high pressure technology to address the need for renewably produced hydrogen fuel for transportation applications. Several follow-on projects in a numerber of related applications are now underway as a result of this SBIR project.

Martin A Shimko

2009-08-08T23:59:59.000Z

46

High Performance Packaging Solutions for Low Cost, Reliable PV Modules: Final Subcontract Report, 26 May 2005 - 30 November 2008  

SciTech Connect (OSTI)

During this research effort, Dow Corning Corporation has addressed the PV manufacturing goals of: (i) improving PV manufacturing processes and equipment; (ii) accelerating manufacturing cost reductions of PV modules; (iii) increasing commercial product performance and reliability; and (iv) scaling up U.S. manufacturing capacity.

Keotla, B. M.; Marinik, B. J.

2009-06-01T23:59:59.000Z

47

Phase II Final Project Report SBIR Project: "A High Efficiency PV to Hydrogen Energy System"  

SciTech Connect (OSTI)

The innovative research conducted for this project contributed greatly to the understanding of generating low-cost hydrogen from solar energy. The projectís research identified two highly leveraging and complementary pathways. The first pathway is to dramatically increase the efficiency of converting sunlight into electricity. Improving solar electric conversion efficiency directly increases hydrogen production. This project produced a world record efficiency for silicon solar cells and contributed to another world record efficiency for a solar concentrator module using multijunction solar cells. The projectís literature review identified a second pathway in which wasted heat from the solar concentration process augments the electrolysis process generating hydrogen. One way to do this is to use a ďheat mirrorĒ that reflects the heat-producing infrared and transmits the visible spectrum to the solar cells; this also increases solar cell conversion efficiency. An economic analysis of this concept confirms that, if long-term concentrator photovoltaic (CPV) and solid-oxide electrolyzer cost goals can be achieved, hydrogen will be produced from solar energy cheaper than the cost of gasoline. The potential public benefits from this project are significant. The project has identified a potential energy source for the nationís future electricity and transportation needs that is entirely ďhome grownĒ and carbon free. As CPV enter the nationís utility markets, the opportunity for this approach to be successful is greatly increased. Amonix strongly recommends further exploration of this projectís findings.

Slade, A; Turner, J; Stone, K; McConnell, R

2008-09-02T23:59:59.000Z

48

Low Cost High Concentration PV Systems for Utility Power Generation Amonix,  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdfGeorgeDoesn't Happen toLeveragingLindseyLong-TermLosof Energy

49

Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid  

E-Print Network [OSTI]

of the absorber or photovoltaic cell. Color behavior, oras ln (A.27) For a photovoltaic cell under concentrated2 day Multijunction photovoltaic cells are used with medium

Hill, Steven Craig

2013-01-01T23:59:59.000Z

50

High-efficiency silicon concentrator cell commercialization  

SciTech Connect (OSTI)

This report summarizes the first phase of a forty-one month program to develop a commercial, high-efficiency concentrator solar cell and facility for manufacturing it. The period covered is November 1, 1990 to December 31, 1991. This is a joint program between the Electric Power Research Institute (EPRI) and Sandia National Laboratories. (This report is also published by EPRI as EPRI report number TR-102035.) During the first year of the program, SunPower accomplished the following major objectives: (1) a new solar cell fabrication facility, which is called the Cell Pilot Line (CPL), (2) a baseline concentrator cell process has been developed, and (3) a cell testing facility has been completed. Initial cell efficiencies are about 23% for the baseline process. The long-range goal is to improve this efficiency to 27%.

Sinton, R.A.; Swanson, R.M. [SunPower Corp., Sunnyvale, CA (US)

1993-05-01T23:59:59.000Z

51

Optimal Inverter VAR Control in Distribution Systems with High PV Penetration  

E-Print Network [OSTI]

and the net benefits, taking into account the additional cost of inverter losses when operating at non systems. Solar energy is highly intermittent and this introduces several challenges to existing utility is to demonstrate the benefits of inverter var control on a fast timescale to mitigate rapid and large voltage

Low, Steven H.

52

PV output smoothing with energy storage.  

SciTech Connect (OSTI)

This report describes an algorithm, implemented in Matlab/Simulink, designed to reduce the variability of photovoltaic (PV) power output by using a battery. The purpose of the battery is to add power to the PV output (or subtract) to smooth out the high frequency components of the PV power that that occur during periods with transient cloud shadows on the PV array. The control system is challenged with the task of reducing short-term PV output variability while avoiding overworking the battery both in terms of capacity and ramp capability. The algorithm proposed by Sandia is purposely very simple to facilitate implementation in a real-time controller. The control structure has two additional inputs to which the battery can respond. For example, the battery could respond to PV variability, load variability or area control error (ACE) or a combination of the three.

Ellis, Abraham; Schoenwald, David Alan

2012-03-01T23:59:59.000Z

53

Energy 101: Solar PV  

SciTech Connect (OSTI)

Solar photovoltaic (PV) systems can generate clean, cost-effective power anywhere the sun shines. This video shows how a PV panel converts the energy of the sun into renewable electricity to power homes and businesses.

None

2011-01-01T23:59:59.000Z

54

Energy 101: Solar PV  

ScienceCinema (OSTI)

Solar photovoltaic (PV) systems can generate clean, cost-effective power anywhere the sun shines. This video shows how a PV panel converts the energy of the sun into renewable electricity to power homes and businesses.

None

2013-05-29T23:59:59.000Z

55

Sandia National Laboratories: PV Valueģ  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and PV industry sales staff. For appraisers, the inputs specific to PV in the Residential Green and Energy Efficient Addendum can be used as inputs to PV Value. Valuing a PV...

56

High-efficiency concentrator silicon solar cells  

SciTech Connect (OSTI)

This report presents results from extensive process development in high-efficiency Si solar cells. An advanced design for a 1.56-cm{sup 2} cell with front grids achieved 26% efficiency at 90 suns. This is especially significant since this cell does not require a prismatic cover glass. New designs for simplified backside-contact solar cells were advanced from a status of near-nonfunctionality to demonstrated 21--22% for one-sun cells in sizes up to 37.5 cm{sup 2}. An efficiency of 26% was achieved for similar 0.64-cm{sup 2} concentrator cells at 150 suns. More fundamental work on dopant-diffused regions is also presented here. The recombination vs. various process and physical parameters was studied in detail for boron and phosphorous diffusions. Emitter-design studies based solidly upon these new data indicate the performance vs design parameters for a variety of the cases of most interest to solar cell designers. Extractions of p-type bandgap narrowing and the surface recombination for p- and n-type regions from these studies have a generality that extends beyond solar cells into basic device modeling. 68 refs., 50 figs.

Sinton, R.A.; Cuevas, A.; King, R.R.; Swanson, R.M. (Stanford Univ., CA (USA). Solid-State Electronics Lab.)

1990-11-01T23:59:59.000Z

57

Stabilized PV system  

DOE Patents [OSTI]

A stabilized PV system comprises an array of photovoltaic (PV) assemblies mounted to a support surface. Each PV assembly comprises a PV module and a support assembly securing the PV module to a position overlying the support surface. The array of modules is circumscribed by a continuous, belt-like perimeter assembly. Cross strapping, extending above, below or through the array, or some combination of above, below and through the array, secures a first position along the perimeter assembly to at least a second position along the perimeter assembly thereby stabilizing the array against wind uplift forces. The first and second positions may be on opposite sides on the array.

Dinwoodie, Thomas L. (Piedmont, CA)

2002-12-17T23:59:59.000Z

58

PV Incentive Program  

Broader source: Energy.gov [DOE]

The New York State Energy Research and Development Authority (NYSERDA) provides an incentive eligible installers for the installation of approved, grid-connected photovoltaic (PV) systems. The base...

59

BIODEGRADATION OF HIGH CONCENTRATIONS OF CRUDE OIL IN MICROCOSMS.  

E-Print Network [OSTI]

??Oil biodegradation at high concentrations was studied in microcosms. The experimental approach involved mixing clean sand with artificially weathered Alaska North Slope crude oil atÖ (more)

XU, YINGYING

2002-01-01T23:59:59.000Z

60

Development of New Low-Cost, High-Performance, PV Module Encapsulant/Packaging Materials: Annual Technical Progress Report, Phase 1, 22 October 2002-30 September 2003  

SciTech Connect (OSTI)

The primary objectives of this subcontract are for Specialized Technology Resources, Inc., to work with U.S.-based PV module manufacturers representing crystalline silicon, polycrystalline silicon, amorphous silicon, copper indium diselenide (CIS), and other state-of-the-art thin-film technologies to develop formulations, production processes, prototype and qualify new low-cost, high-performance photovoltaic module encapsulants/packaging materials. The manufacturers will assist in identifying each materials' deficiencies while undergoing development, and then ultimately in qualifying the final optimized materials designed to specifically meet their requirements. Upon completion of this program, new low-cost, high-performance, PV module encapsulant/packaging materials will be qualified, by one or more end-users, for their specific application. Information gathering on topics related to thin-film module technology, including device performance/failure analysis, glass stability, and de vice encapsulation, has been completed. This information has provided concepts and considerations for module failure analysis, accelerated testing design, and encapsulation formulation strategy for thin-film modules.

Agro, S. C.; Tucker, R. T.

2004-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Sandia National Laboratories: PV Facilities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

manufacturing consultation complete performance characterization of PV cells and photo sensors calibration of PV reference cells, reference modules, and solar instruments...

62

Grid integrated distributed PV (GridPV).  

SciTech Connect (OSTI)

This manual provides the documentation of the MATLAB toolbox of functions for using OpenDSS to simulate the impact of solar energy on the distribution system. The majority of the functions are useful for interfacing OpenDSS and MATLAB, and they are of generic use for commanding OpenDSS from MATLAB and retrieving information from simulations. A set of functions is also included for modeling PV plant output and setting up the PV plant in the OpenDSS simulation. The toolbox contains functions for modeling the OpenDSS distribution feeder on satellite images with GPS coordinates. Finally, example simulations functions are included to show potential uses of the toolbox functions. Each function in the toolbox is documented with the function use syntax, full description, function input list, function output list, example use, and example output.

Reno, Matthew J.; Coogan, Kyle [Georgia Institute of Technology, Atlanta, GA

2013-08-01T23:59:59.000Z

63

Recent Progress and Future Potential for Concentrating Photovoltaic Power Systems: Preprint  

SciTech Connect (OSTI)

This paper explores the potential of utility-scale PV power, and, specifically, the opportunity that may arise for concentrating photovoltaics (CPV). In the 1990s, sales of PV modules were dominated by small-size applications such as PV-powered water pumping, emergency telephones, and calculators. More recently, the dramatic growth in the PV industry has been fueled by rooftop systems, especially in Japan and Germany. Such subsidized, grid-connected PV systems are likely to drive PV markets in coming years. Distributed systems deliver power where it is needed, avoiding transmission losses; and residential and commercial systems can be financed along with the rest of a building. Japan and Germany continue to provide market incentives because of their belief in PV's long-term benefits. As successful and important as the rooftop market is for PV sales today, the PV industry will be able to penetrate a larger fraction of the electricity market if PV systems are also used in larger installations, such as utility-owned systems, PV parks, and customer-owned systems. Because retail electricity costs more than wholesale electricity, it is often assumed that PV will address, with incentives, the retail market long before the wholesale market. Here, we show data suggesting that they can grow together. CPV, which uses low-cost lenses or mirrors to focus sunlight on high-efficiency solar cells, has often been presented as a lower-cost approach to utility-scale PV power. Although CPV typically does not compete in rooftop or other current PV markets, CPV could be a major player in a utility-scale market.

Kurtz, S.; Lewandowski, A.; Hayden, H.

2004-08-01T23:59:59.000Z

64

Updating Technical Screens for PV Interconnection: Preprint  

SciTech Connect (OSTI)

Solar photovoltaics (PV) is the dominant type of distributed generation (DG) technology interconnected to electric distribution systems in the United States, and deployment of PV systems continues to increase rapidly. Considering the rapid growth and widespread deployment of PV systems in United States electric distribution grids, it is important that interconnection procedures be as streamlined as possible to avoid unnecessary interconnection studies, costs, and delays. Because many PV interconnection applications involve high penetration scenarios, the process needs to allow for a sufficiently rigorous technical evaluation to identify and address possible system impacts. Existing interconnection procedures are designed to balance the need for efficiency and technical rigor for all DG. However, there is an implicit expectation that those procedures will be updated over time in order to remain relevant with respect to evolving standards, technology, and practical experience. Modifications to interconnection screens and procedures must focus on maintaining or improving safety and reliability, as well as accurately allocating costs and improving expediency of the interconnection process. This paper evaluates the origins and usefulness of the capacity penetration screen, offers potential short-term solutions which could effectively allow fast-track interconnection to many PV system applications, and considers longer-term solutions for increasing PV deployment levels in a safe and reliable manner while reducing or eliminating the emphasis on the penetration screen.

Coddington, M.; Ellis, A.; Lynn, K.; Razon, A.; Key, T.; Kroposki, B.; Mather, B.; Hill, R.; Nicole, K.; Smith, J.

2012-08-01T23:59:59.000Z

65

Open PV Project: Unlocking PV Installation Data (Brochure)  

SciTech Connect (OSTI)

This brochure summarizes the Open PV Project, a collaborative effort of government, industry, and the public to compile a comprehensive database of PV installations in the United States. The brochure outlines the purpose and history of the project as well as the main capabilities and benefits of the online Open PV tool. The brochure also introduces how features of the tool are used, and it describes the sources and characteristics of Open PV's data and data collection processes.

Not Available

2012-04-01T23:59:59.000Z

66

Energy 101: Solar PV | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Solar PV Energy 101: Solar PV Addthis Description Solar photovoltaic (PV) systems can generate clean, cost-effective power anywhere the sun shines. This video shows how a PV panel...

67

Advanced, High-Reliability, System-Integrated 500kW PV Inverter Development: Final Subcontract Report, 29 September 2005 - 31 May 2008  

SciTech Connect (OSTI)

Xantrex Technology accomplished subcontract goals of reducing parts cost, weight, and size of its 500-kW inverter by 25% compared to state-of-the-art PV inverters, while extending reliability by 25%.

West, R.

2008-08-01T23:59:59.000Z

68

Testing for PV Reliability (Presentation)  

SciTech Connect (OSTI)

The DOE SUNSHOT workshop is seeking input from the community about PV reliability and how the DOE might address gaps in understanding. This presentation describes the types of testing that are needed for PV reliability and introduces a discussion to identify gaps in our understanding of PV reliability testing.

Kurtz, S.; Bansal, S.

2014-09-01T23:59:59.000Z

69

PV PLANNER A DESIGN AND  

E-Print Network [OSTI]

PV PLANNER A DESIGN AND ANALYSIS TOOL FOR BUILDING INTEGRATED SOLAR ELECTRIC SYSTEMS FINAL PLANNER A DESIGN AND ANALYSIS TOOL FOR BUILDING INTEGRATED SOLAR ELECTRIC SYSTEMS Final Report A Renewable............................................................................................................................................26 3. ILLUSTRATIVE OUTPUTS FROM PV PLANNER FOR A BUILDING INTEGRATED (BIPV) PV APPLICATION

Delaware, University of

70

An insitu borescopic quantitative imaging profiler for the measurement of high concentration sediment velocity  

E-Print Network [OSTI]

of high concentration sediment velocity Edwin A. Cowen ēinstantaneous velocity in high sediment concentration ?ows,point reveals the sheet ?ow sediment velocities to be highly

Cowen, Edwin A.; Dudley, Russell D.; Liao, Qian; Variano, Evan A.; Liu, Philip L.-F.

2010-01-01T23:59:59.000Z

71

A Distributed Approach to MPPT for PV Sub-Module Differential Power Processing  

E-Print Network [OSTI]

for differential power processing in photovoltaic (PV) applica- tions. This distributed algorithm performs true of the proposed distributed algorithm. I. INTRODUCTION In photovoltaic (PV) energy systems, PV modules are of- ten, reliability, and cost. A high level introduction to the DPP concept can be found in [8]. In contrast to DC

Liberzon, Daniel

72

Characterizing Shading Losses on Partially Shaded PV Systems (Presentation)  

SciTech Connect (OSTI)

Presentation on shaded PV power loss, practical issues with modeling shaded PV, and methods of implementing partially shaded PV modeling.

Deline, C.

2010-09-23T23:59:59.000Z

73

Teksun PV Manufacturing Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop, Inc Place:Innovation & Solutions HomeTeksun PV Manufacturing

74

PV Fact Sheets Argument B1Some people state that "The external costs of PV electricity  

E-Print Network [OSTI]

PV Fact Sheets Argument B1Some people state that "The external costs of PV electricity is much and the low one to thin-film cadmium telluride PV systems. Fossil fuel power plants PV displaces. 5.8 External

75

HOW BPA/WSUN SCHOOL PV EFFORT WORKED AT ELMIRA HIGH SCHOOL This article reports on lessons learned from installing a  

E-Print Network [OSTI]

, and a mechanism to help share the cost of the system. The school and the students benefit in having a renewable energy system that can be used as an educational aide. The local utility and BPA benefit from experience" the system costs for fifteen solar electric (PV) systems. In other words, BPA paid the $2,500 for each system

Oregon, University of

76

Outdoor PV Degradation Comparison  

SciTech Connect (OSTI)

As photovoltaic (PV) penetration of the power grid increases, it becomes vital to know how decreased power output; may affect cost over time. In order to predict power delivery, the decline or degradation rates must be determined; accurately. At the Performance and Energy Rating Testbed (PERT) at the Outdoor Test Facility (OTF) at the; National Renewable Energy Laboratory (NREL) more than 40 modules from more than 10 different manufacturers; were compared for their long-term outdoor stability. Because it can accommodate a large variety of modules in a; limited footprint the PERT system is ideally suited to compare modules side-by-side under the same conditions.

Jordan, D. C.; Smith, R. M.; Osterwald, C. R.; Gelak, E.; Kurtz, S. R.

2011-02-01T23:59:59.000Z

77

Sandia National Laboratories: PV  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearch WelcomeSciencePrograms NuclearPublications AnnualNuclearPV

78

Sandia National Laboratories: PV  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLong RangePILS Sandia'sAdvancedPV

79

Sandia National Laboratories: PV  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLong RangePILS Sandia'sAdvancedPVFinancePV

80

Shock initiation studies on high concentration hydrogen peroxide  

SciTech Connect (OSTI)

Concentrated hydrogen peroxide (H{sub 2}O{sub 2}) has been known to detonate for many years. However, because of its reactivity and the difficulty in handling and confining it, along with the large critical diameter, few studies providing basic information about the initiation and detonation properties have been published. We are conducting a study to understand and quantify the initiation and detonation properties of highly concentrated H{sub 2}O{sub 2} using a gas-driven two-stage gun to produce well defined shock inputs. Multiple magnetic gauges are used to make in-situ measurements of the growth of reaction and subsequent detonation in the liquid. These experiments are designed to be one-dimensional to eliminate any difficulties that might be encountered with large critical diameters. Because of the concern of the reactivity of the H{sub 2}O{sub 2} with the confining materials, a remote loading system has been developed. The gun is pressurized, then the cell is filled and the experiment shot within less than three minutes. TV cameras are attached to the target so the cell filling can be monitored. Several experiments have been completed on {approx}98 wt % H{sub 2}O{sub 2}/H{sub 2}O mixtures; initiation has been observed in some experiments that shows homogeneous shock initiation behavior. The initial shock pressurizes and heats the mixture. After an induction time, a thermal explosion type reaction produces an evolving reactive wave that strengthens and eventually overdrives the first wave producing a detonation. From these measurements, we have determined unreacted Hugoniot information, times (distances) to detonation (Pop-plot points) that indicate low sensitivity, and detonation velocities of high concentration H{sub 2}O{sub 2}/H{sub 2}O solutions that agree with earlier estimates.

Sheffield, Stephen A [Los Alamos National Laboratory; Dattelbaum, Dana M [Los Alamos National Laboratory; Stahl, David B [Los Alamos National Laboratory; Gibson, L. Lee [Los Alamos National Laboratory; Bartram, Brian D. [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Considerations for PV Site Surveys  

E-Print Network [OSTI]

and building codes determine how a solar-electric (photovoltaic; PV) system is installed. A site survey- grid system, if solar energy is not collected, then the electrical loads may not be supported withoutConsiderations for PV Site Surveys John Wiles Sponsored by the U.S. Department of Energy this loss

Johnson, Eric E.

82

Low-Cost High-Concentration Photovoltaic Systems for Utility Power Generation  

SciTech Connect (OSTI)

Under DOE's Technology Pathway Partnership (TPP) program, Amonix, Inc. developed a new generation of high-concentration photovoltaic systems using multijunction technology and established the manufacturing capacity needed to supply multi-megawatt power plants buing using the new Amonix 7700-series solar energy systems. For this effort, Amonix Collaborated with a variety of suppliers and partners to complete project tasks. Subcontractors included: Evonik/Cyro; Hitek; the National Renewable Energy Laboratory (NREL); Raytech; Spectrolab; UL; University of Nevada, Las Vegas; and TUV Rheinland PTL. The Amonix TPP tasks included: Task 1: Multijunction Cell Optimization for Field Operation, Task 2: Fresnel Lens R&D, Task 3: Cell Package Design & Production, Task 4: Standards Compliance and Reliability Testing, Task 5: Receiver Plate Production, Task 6: MegaModule Performance, Task 7: MegaModule Cost Reduction, Task 8: Factory Setup and MegaModule Production, Task 9: Tracker and Tracking Controller, Task 10: Installation and Balance of System (BOS), Task 11: Field Testing, and Task 12: Solar Advisor Modeling and Market Analysis. Amonix's TPP addressed nearly the complete PV value chain from epitaxial layer design and wafer processing through system design, manufacturing, deployment and O&M. Amonix has made progress toward achieving these reduced costs through the development of its 28%+ efficient MegaModule, reduced manufacturing and installation cost through design for manufacturing and assembly, automated manufacturing processes, and reduced O&M costs. Program highlights include: (1) Optimized multijunction cell and cell package design to improve performance by > 10%; (2) Updated lens design provided 7% increased performance and higher concentration; (3) 28.7% DC STC MegaModule efficiency achieved in Phase II exceeded Phase III performance goal; (4) New 16' focal length MegaModule achieved target materials and manufacturing cost reduction; (5) Designed and placed into production 25 MW/yr manufacturing capacity for complete MegaModules, including cell packages, receiver plates, and structures with lenses; (6) Designed and deployed Amonix 7700 series systems rated at 63 kW PTC ac and higher. Based on an LCOE assessment using NREL's Solar Advisor Model, Amonix met DOE's LCOE targets: Amonix 2011 LCOE 12.8 cents/kWh (2010 DOE goal 10-15); 2015 LCOE 6.4 cents/kWh (2015 goal 5-7) Amonix and TPP participants would like to thank the U.S. Department of Energy Solar Energy Technology Program for funding received under this program through Agreement No. DE-FC36-07GO17042.

McConnell, R.; Garboushian, V.; Gordon, R.; Dutra, D.; Kinsey, G.; Geer, S.; Gomez, H.; Cameron, C.

2012-03-31T23:59:59.000Z

83

Sensitivity of Rooftop PV Projections in the SunShot Vision Study to Market Assumptions  

SciTech Connect (OSTI)

The SunShot Vision Study explored the potential growth of solar markets if solar prices decreased by about 75% from 2010 to 2020. The SolarDS model was used to simulate rooftop PV demand for this study, based on several PV market assumptions--future electricity rates, customer access to financing, and others--in addition to the SunShot PV price projections. This paper finds that modeled PV demand is highly sensitive to several non-price market assumptions, particularly PV financing parameters.

Drury, E.; Denholm, P.; Margolis, R.

2013-01-01T23:59:59.000Z

84

Non-Fickian ionic diffusion across high-concentration gradients  

SciTech Connect (OSTI)

A non-Fickian physico-chemical model for electrolyte transport in high-ionic strength systems is developed and tested with laboratory experiments with copper sulfate as an example electrolyte. The new model is based on irreversible thermodynamics and uses measured mutual diffusion coefficients, varying with concentration. Compared to a traditional Fickian model, the new model predicts less diffusion and asymmetric diffusion profiles. Laboratory experiments show diffusion rates even smaller than those predicted by our non-Fickian model, suggesting that there are additional, unaccounted for processes retarding diffusion. Ionic diffusion rates maybe a limiting factor in transporting salts whose effect on fluid density will in turn significantly affect the flow regime. These findings have important implications for understanding and predicting solute transport in geologic settings where dense, saline solutions occur. 30 refs., 5 figs.

Carey, A.E.; Wheatcraft, S.W. [Univ. of Nevada, Reno, NV (United States)] [Univ. of Nevada, Reno, NV (United States); Glass, R.J. [Sandia National Laboratory, Albuquerque, NM (United States)] [and others] [Sandia National Laboratory, Albuquerque, NM (United States); and others

1995-09-01T23:59:59.000Z

85

PV AND GRID RELIABILITY: AVAILABILITY OF PV POWER DURING CAPACITY SHORTFALLS  

E-Print Network [OSTI]

from a stream of actual load and PV output data: (1) The effective load carrying capability (ELCC output was simulated using high-resolution satellite cloud cover data [7]. The results are reported; (3) the solar load controller's (SLC) minimum temperature adjustment [6], is an other indirect

Perez, Richard R.

86

3-Port Single-Stage PV & Battery Converter Improves Efficiency and Cost in Combined PV/Battery Systems  

SciTech Connect (OSTI)

Due to impressive cost reductions in recent years, photovoltaic (PV) generation is now able to produce electricity at highly competitive prices, but PVís inherent intermittency reduces the potential value of this energy. The integration of battery storage with PV will be transformational by increasing the value of solar. Utility scale systems will benefit by firming intermittency including PV ramp smoothing, grid support and load shifting, allowing PV to compete directly with conventional generation. For distributed grid-tied PV adding storage will reduce peak demand utility charges, as well as providing backup power during power grid failures. The largest long term impact of combined PV and battery systems may be for delivering reliable off-grid power to the billions of individuals globally without access to conventional power grids, or for billions more that suffer from daily power outages. PV module costs no longer dominate installed PV system costs. Balance-of-System (BOS) costs including the PV inverter and installation now contribute the majority of installed system costs. Battery costs are also dropping faster than installation and battery power converter systems. In each of these separate systems power converters have become a bottleneck for efficiency, cost and reliability. These bottlenecks are compounded in hybrid power conversion systems that combine separate PV and battery converters. Hybrid power conversion systems have required multiple power converters hardware units and multiple power conversion steps adding to efficiency losses, product and installation costs, and reliability issues. Ideal Power Converters has developed and patented a completely new theory of operation for electronic power converters using its indirect EnergyPacket Switchingô topology. It has established successful power converter products for both PV and battery systems, and its 3-Port Hybrid Converter is the first product to exploit the topologyís capability for the industryís first single-stage multi-port hybrid power converter. This unique low cost approach eliminates the hybrid power conversion bottlenecks when integrating batteries into PV systems. As result this product will significantly accelerate market adoption of these systems.

Bundschuh, Paul [Ideal Power

2013-03-23T23:59:59.000Z

87

HYDROGEN CONCENTRATION AND DISTRIBUTION IN HIGH-PURITY GERMANIUM CRYSTALS  

E-Print Network [OSTI]

melting point. By analogy, hydrogen permeation measurementsin silicon suggest that the hydrogen solubility also is notNo. 1, February 1982 HYDROGEN CONCENTRATION AND DISTRIBUTION

Hansen, W.L.

2010-01-01T23:59:59.000Z

88

Gulf Power- Solar PV Program  

Broader source: Energy.gov [DOE]

'''''All funding has currently been reserved and new applications are no longer being accepted. See Gulf Power's [http://www.gulfpower.com/renewable/solarElectricity.asp Solar PV] web site for more...

89

2014 PV Performance Modeling Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2014 PV Performance Modeling Workshop Photo courtesy of Sempra Energy 8:00 AM to 9:00 PM Monday, May 5, 2014 At Biltmore Hotel, Santa Clara, California 512014 Agenda: Start Time...

90

Sandia National Laboratories: PV Contacts  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Bruce King 505.284.6571 bhking at sandia.gov Tagged with: Energy * photovoltaic * Photovoltaics * PV * Renewable Energy * SAND 2011-4654W * Solar Energy * Solar Research Comments...

91

Pressure-equalizing PV assembly and method  

DOE Patents [OSTI]

Each PV assembly of an array of PV assemblies comprises a base, a PV module and a support assembly securing the PV module to a position overlying the upper surface of the base. Vents are formed through the base. A pressure equalization path extends from the outer surface of the PV module, past the PV module, to and through at least one of the vents, and to the lower surface of the base to help reduce wind uplift forces on the PV assembly. The PV assemblies may be interengaged, such as by interengaging the bases of adjacent PV assemblies. The base may include a main portion and a cover and the bases of adjacent PV assemblies may be interengaged by securing the covers of adjacent bases together.

Dinwoodie, Thomas L.

2004-10-26T23:59:59.000Z

92

PSCAD Modules Representing PV Generator  

SciTech Connect (OSTI)

Photovoltaic power plants (PVPs) have been growing in size, and the installation time is very short. With the cost of photovoltaic (PV) panels dropping in recent years, it can be predicted that in the next 10 years the contribution of PVPs to the total number of renewable energy power plants will grow significantly. In this project, the National Renewable Energy Laboratory (NREL) developed a dynamic modeling of the modules to be used as building blocks to develop simulation models of single PV arrays, expanded to include Maximum Power Point Tracker (MPPT), expanded to include PV inverter, or expanded to cover an entire PVP. The focus of the investigation and complexity of the simulation determines the components that must be included in the simulation. The development of the PV inverter was covered in detail, including the control diagrams. Both the current-regulated voltage source inverter and the current-regulated current source inverter were developed in PSCAD. Various operations of the PV inverters were simulated under normal and abnormal conditions. Symmetrical and unsymmetrical faults were simulated, presented, and discussed. Both the three-phase analysis and the symmetrical component analysis were included to clarify the understanding of unsymmetrical faults. The dynamic model validation was based on the testing data provided by SCE. Testing was conducted at SCE with the focus on the grid interface behavior of the PV inverter under different faults and disturbances. The dynamic model validation covers both the symmetrical and unsymmetrical faults.

Muljadi, E.; Singh, M.; Gevorgian, V.

2013-08-01T23:59:59.000Z

93

Technology support for high-throughput processing of thin-film CdTe PV modules: Annual technical report, Phase 1, 1 April 1998--31 March 1999  

SciTech Connect (OSTI)

This report describes work performed by First Solar, L.L.C., during Phase 1 of this 3-year subcontract. The research effort of this subcontract is divided into four areas: (1) process and equipment development, (2) efficiency improvement, (3) characterization and analysis, and (4) environmental, health, and safety. As part of the process development effort, the output of the pilot-production facility was increased. More than 6,200 8-ft{sup 2} CdS/CdTe plates were produced during Phase 1--more than double the total number produced prior to Phase 1. This increase in pilot-production rate was accomplished without a loss in the PV conversion efficiency: the average total-area AM1.5 efficiency of sub-modules produced during the reporting period was 6.4%. Several measurement techniques, such as large-area measurement of CdS thickness, were developed to aid process improvement, and the vapor-transport deposition method was refined. CdTe thickness uniformity and reproducibility were improved. From a population of more than 1,100 plates, the mean standard deviation within a plate was 7.3% and the standard deviation of individual-plate averages was 6.8%. As part of the efficiency-improvement task, research was done on devices with thin-CdS and buffer layers. A cell with 13.9% efficiency was produced on a high-quality substrate, and higher than 12% efficiency was achieved with a cell with no CdS layer. A number of experiments were performed as part of the characterization and analysis task. The temperature dependence of CdTe modules was investigated; the power output was found to be relatively insensitive (<5%) to temperature in the 25 to 50 C range. As part of the characterization and analysis task, considerable effort was also given to reliability verification and improvement. The most carefully monitored array, located at the NREL, was found to have unchanged power output within the margin of error of measurement (5%) after 5 years in the field. The first round of National CdTe Team stability tests were concluded. One back-contact formulation resulted in cells that increased in efficiency as a result of 9,700 hours of light soaking. As part of the environmental, health, and safety task, an emissions survey was performed for the pilot-production facility. For production of 360 modules/day, it was predicted that the cadmium emissions would be only 0.015% of the level that would require any permitting; however, methanol emissions may require permitting if anticipated process changes are not implemented. Process improvements in edge delete, CdS material preparation, waste compaction, CdCl{sub 2}-vapor collection, and wastewater treatment were made, resulting in reduced costs, reduced emissions, and improved operator safety.

Rose, D.H.; Powell, R.C.; Grecu, D.; Jayamaha, U.; Hanak, J.J.; Bohland, J.; Smigielski, K.; Dorer, G.L.

1999-10-25T23:59:59.000Z

94

Research Leading to High Throughput Manufacturing of Thin-Film CdTe PV Modules: Annual Subcontract Report, September 2004--September 2005  

SciTech Connect (OSTI)

Specific overall objectives of this subcontract are improvement in baseline field performance of manufactured CdTe PV modules while reducing environmental, health and safety risk in the manufacturing environment. Project objectives focus on four broad categories: (1) development of advanced front-contact window layers, (2) improved semiconductor film deposition, (3) development of improved accelerated life test procedures that indicate baseline field performance, and (4) reduction of cadmium-related environmental, health and safety risks. First Solar has significantly increased manufacturing capacity from less than 2 MW/yr to more than 20 MW/yr, while increasing the average module total-area power conversion efficiency from 7% to >9%. First Solar currently manufactures and sells 50-65-W thin-film CdTe PV modules at a rate of about 1.9 MW/month. Sales backlog (booked sales less current inventory divided by production rate) is more than a year. First Solar is currently building new facilities and installing additional equipment to increase production capacity by 50 MW/yr; the additional capacity is expected to come on line in the third quarter of 2006.

Powell, R. C.

2006-04-01T23:59:59.000Z

95

Bandgap Engineering in High-Efficiency Multijunction Concentrator Cells  

SciTech Connect (OSTI)

This paper discusses semiconductor device research paths under investigation with the aim of reaching the milestone efficiency of 40%. A cost analysis shows that achieving very high cell efficiencies is crucial for the realization of cost-effective photovoltaics, because of the strongly leveraging effect of efficiency on module packaging and balance-of systems costs. Lattice-matched (LM) GaInP/ GaInAs/ Ge 3-junction cells have achieved the highest independently confirmed efficiency at 175 suns, 25?C, of 37.3% under the standard AM1.5D, low-AOD terrestrial spectrum. Lattice-mismatched, or metamorphic (MM), materials offer still higher potential efficiencies, if the crystal quality can be maintained. Theoretical efficiencies well over 50% are possible for a MM GaInP/ 1.17-eV GaInAs/ Ge 3-junction cell limited by radiative recombination at 500 suns. The bandgap - open circuit voltage offset, (Eg/q) - Voc, is used as a valuable theoretical and experimental tool to characterize multijunction cells with subcell bandgaps ranging from 0.7 to 2.1 eV. Experimental results are presented for prototype 6-junction cells employing an active {approx}1.1-eV dilute nitride GaInNAs subcell, with active-area efficiency greater than 23% and over 5.3 V open-circuit voltage under the 1-sun AM0 space spectrum. Such cell designs have theoretical efficiencies under the terrestrial spectrum at 500 suns concentration exceeding 55% efficiency, even for lattice-matched designs.

King, R. R.; Sherif, R. A.; Kinsey, G. S.; Kurtz, S.; Fetzer, C. M.; Edmondson, K. M.; Law, D. C.; Cotal, H. L.; Krut, D. D.; Ermer, J. H.; Karam, N. H.

2005-08-01T23:59:59.000Z

96

Development of manufacturing capability for high-concentration, high-efficiency silicon solar cells  

SciTech Connect (OSTI)

This report presents a summary of the major results from a program to develop a manufacturable, high-efficiency silicon concentrator solar cell and a cost-effective manufacturing facility. The program was jointly funded by the Electric Power Research Institute, Sandia National Laboratories through the Concentrator Initiative, and SunPower Corporation. The key achievements of the program include the demonstration of 26%-efficient silicon concentrator solar cells with design-point (20 W/cm{sup 2}) efficiencies over 25%. High-performance front-surface passivations; that were developed to achieve this result were verified to be absolutely stable against degradation by 475 days of field exposure at twice the design concentration. SunPower demonstrated pilot production of more than 1500 of these cells. This cell technology was also applied to pilot production to supply 7000 17.7-cm{sup 2} one-sun cells (3500 yielded wafers) that demonstrated exceptional quality control. The average efficiency of 21.3% for these cells approaches the peak efficiency ever demonstrated for a single small laboratory cell within 2% (absolute). Extensive cost models were developed through this program and calibrated by the pilot-production project. The production levels achieved indicate that SunPower could produce 7-10 MW of concentrator cells per year in the current facility based upon the cell performance demonstrated during the program.

Sinton, R.A.; Verlinden, P.J.; Crane, R.A.; Swanson, R.N. [SunPower Corp., Sunnyvale, CA (United States)

1996-10-01T23:59:59.000Z

97

Integration of High Efficiency Solar Cells on Carriers for Concentrating System Applications .  

E-Print Network [OSTI]

??High efficiency multi-junction (MJ) solar cells were packaged onto receiver systems. The efficiency change of concentrator cells under continuous high intensity illumination was done. Also,Ö (more)

Chow, Simon Ka Ming

2011-01-01T23:59:59.000Z

98

How Can We Make PV Modules Safer?: Preprint  

SciTech Connect (OSTI)

Safety is a prime concern for the photovoltaics (PV) industry. As a technology deployed on residential and commercial buildings, it is critical that PV not cause damage to the buildings nor harm the occupants. Many of the PV systems on buildings are of sufficiently high voltage (300 to 600 Volts dc) that they may present potential hazards. These PV systems must be safe in terms of mechanical damage (nothing falls on someone), shock hazard (no risk of electrical shock when touching an exposed circuit element), and fire (the modules neither cause nor promote a fire). The present safety standards (IEC 61730 and UL 1703) do a good job of providing for design rules and test requirements for mechanical, shock, and spread of flame dangers. However, neither standard addresses the issue of electrical arcing within a module that can cause a fire. To make PV modules, they must be designed, built, and installed with an emphasis on minimizing the potential for open circuits and ground faults. This paper provides recommendations on redundant connection designs, robust mounting methods, and changes to the safety standards to yield safer PV modules.

Wohlgemuth, J. H.; Kurtz, S. R.

2012-06-01T23:59:59.000Z

99

Interconnecting PV on New York City's Secondary Network Distribution System  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) has teamed with cities across the country through the Solar America Cities (SAC) partnership program to help reduce barriers and accelerate implementation of solar energy. The New York City SAC team is a partnership between the City University of New York (CUNY), the New York City Mayor s Office of Long-term Planning and Sustainability, and the New York City Economic Development Corporation (NYCEDC).The New York City SAC team is working with DOE s National Renewable Energy Laboratory (NREL) and Con Edison, the local utility, to develop a roadmap for photovoltaic (PV) installations in the five boroughs. The city set a goal to increase its installed PV capacity from1.1 MW in 2005 to 8.1 MW by 2015 (the maximum allowed in 2005). A key barrier to reaching this goal, however, is the complexity of the interconnection process with the local utility. Unique challenges are associated with connecting distributed PV systems to secondary network distribution systems (simplified to √?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?networks√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬Ě in this report). Although most areas of the country use simpler radial distribution systems to distribute electricity, larger metropolitan areas like New York City typically use networks to increase reliability in large load centers. Unlike the radial distribution system, where each customer receives power through a single line, a network uses a grid of interconnected lines to deliver power to each customer through several parallel circuits and sources. This redundancy improves reliability, but it also requires more complicated coordination and protection schemes that can be disrupted by energy exported from distributed PV systems. Currently, Con Edison studies each potential PV system in New York City to evaluate the system s impact on the network, but this is time consuming for utility engineers and may delay the customer s project or add cost for larger installations. City leaders would like to streamline this process to facilitate faster, simpler, and less expensive distributed PV system interconnections. To assess ways to improve the interconnection process, NREL conducted a four-part study with support from DOE. The NREL team then compiled the final reports from each study into this report. In Section 1√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?PV Deployment Analysis for New York City√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?we analyze the technical potential for rooftop PV systems in the city. This analysis evaluates potential PV power production in ten Con Edison networks of various locations and building densities (ranging from high density apartments to lower density single family homes). Next, we compare the potential power production to network loads to determine where and when PV generation is most likely to exceed network load and disrupt network protection schemes. The results of this analysis may assist Con Edison in evaluating future PV interconnection applications and in planning future network protection system upgrades. This analysis may also assist other utilities interconnecting PV systems to networks by defining a method for assessing the technical potential of PV in the network and its impact on network loads. Section 2√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?A Briefing for Policy Makers on Connecting PV to a Network Grid√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?presents an overview intended for nontechnical stakeholders. This section describes the issues associated with interconnecting PV systems to networks, along with possible solutions. Section 3√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?Technical Review of Concerns and Solutions to PV Interconnection in New Y

K. Anderson; M. Coddington; K. Burman; S. Hayter; B. Kroposki; and A. Watson

2009-11-30T23:59:59.000Z

100

Methods and devices for high-throughput dielectrophoretic concentration  

DOE Patents [OSTI]

Disclosed herein are methods and devices for assaying and concentrating analytes in a fluid sample using dielectrophoresis. As disclosed, the methods and devices utilize substrates having a plurality of pores through which analytes can be selectively prevented from passing, or inhibited, on application of an appropriate electric field waveform. The pores of the substrate produce nonuniform electric field having local extrema located near the pores. These nonuniform fields drive dielectrophoresis, which produces the inhibition. Arrangements of electrodes and porous substrates support continuous, bulk, multi-dimensional, and staged selective concentration.

Simmons, Blake A. (San Francisco, CA); Cummings, Eric B. (Livermore, CA); Fiechtner, Gregory J. (Germantown, MD); Fintschenko, Yolanda (Livermore, CA); McGraw, Gregory J. (Ann Arbor, MI); Salmi, Allen (Escalon, CA)

2010-02-23T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Improved high-efficiency silicon concentrator cells for medium concentration applications  

SciTech Connect (OSTI)

This report describes efforts toward design simplification of Si concentrator cells capable of efficiencies in the 25-30% range. A discussion is given on the principal issues involved in the design and fabrication of both backside-contact cells and cells with frontside grids. Several proposed designs are detailed. Results include 23% two-sided 1.5625 cm/sup 2/ cells operating at 14 W/cm/sup 2/ of incident power. This simple design requires only one mask alignment and should approach 25% with further development. With an additional alignment, cells that are 27% efficient are feasible. Neither of these designs will require prismatic cover glasses to achieve this performance. In addition, a new backside contact cell design is described that requires only one mask and no alignments. Cells of this type were demonstrated to be 15.4% efficient at 4 W/cm/sup 2/, without AR coatings or texturization. Fundamental studies of the limiting parameters indicate that the design will exceed 25% in efficiency when fully developed. Finally, a new light-trapping scheme is proposed which could have the effect of increasing the attainable efficiencies of silicon concentrator cells to 32-33%. This same scheme might also be utilized in ways which would allow very simple low-cost cell designs to achieve results comparable to the best cells demonstrated to date. Assorted other practically-oriented results on metalization development, cell mounting, and qualification tests are also presented. 26 refs., 31 figs.

Sinton, R.A.; Swanson, R.M.

1989-02-01T23:59:59.000Z

102

Protein levels for Chios lambs given high concentrate diets  

E-Print Network [OSTI]

efficiently utilized (Roy et al., 1977). In a previous experiment with younger growing Chios lambs (Anonymous/kg dry matter) and lucerne hay. Following weaning all lambs were offered the same concentrate mixture ad libitum plus 0.1 kg lucerne hay (182 g CP/kg dry matter) daily. The animals were allocated on the three

Paris-Sud XI, Université de

103

Comparison of Pyranometers vs. PV Reference Cells for Evaluation of PV Array Performance  

SciTech Connect (OSTI)

As the photovoltaics (PV) industry has grown, the need for accurately monitoring the solar resource of PV power plants has increased. Historically, the PV industry has relied on thermopile pyranometers for irradiance measurements, and a large body of historical irradiance data taken with pyranometers exists. However, interest in PV reference devices is increasing. In this paper, we discuss why PV reference devices are better suited for PV applications, and estimate the typical uncertainties in irradiance measurements made with both pyranometers and PV reference devices. We assert that the quantity of interest in monitoring a PV power plant is the equivalent irradiance under the IEC 60904-3 reference solar spectrum that would produce the same electrical response in the PV array as the incident solar radiation. For PV-plant monitoring applications, we find the uncertainties in irradiance measurements of this type to be on the order of +/-5% for thermopile pyranometers and +/-2.4% for PV reference devices.

Dunn, L.; Gostein, M.; Emery, K.

2012-09-01T23:59:59.000Z

104

PV Validation and Bankability Workshop  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSalesOE0000652 Srivastava, WSUEnergyPV Performance andPV

105

PV Value | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergyDepartment ofOil's Impact on2005-74Laboratories | Department ofPV Value PV

106

Sandia National Laboratories: PV Contacts  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLong RangePILSResourcesPV Contacts PV

107

Sandia National Laboratories: PV Workshops  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems ReliabilityWorkshops PV

108

City of Palo Alto Utilities- PV Partners  

Broader source: Energy.gov [DOE]

The City of Palo Alto Utilities (CPAU) PV Partners Program offers incentives to customers that install qualifying PV systems. The program, which has a budget of approximately $13 million over 10...

109

City of Sunset Valley- PV Rebate Program  

Broader source: Energy.gov [DOE]

The City of Sunset Valley offers rebates to local homeowners who install photovoltaic (PV) systems on their properties. The local rebate acts as an add-on to the PV rebates that are offered by...

110

November 21, 2000 PV Lesson Plan 3 PV Array Generating Electricity  

E-Print Network [OSTI]

November 21, 2000 PV Lesson Plan 3 ­ PV Array Generating Electricity Prepared for the Oregon in Arrays: Solar Cells Generating Electricity Lesson Plan Content: In this lesson, students will learn about electricity. Objectives: Students will learn to use a tool called PV WATTS to calculate the output of PV

Oregon, University of

111

Research of PV Application on  

E-Print Network [OSTI]

that conforms to the MN Building code definition of a "townhouse". Single house prototype of the UMore Park stage, possible form of energy infrastructure in the future, attitude of developers and future dwellers-off, incentives and payback of PV, issues of shading effects and solution; (3) Case study of single solar house

Netoff, Theoden

112

Analysis and Design of Smart PV Module  

E-Print Network [OSTI]

This thesis explores the design of a smart photovoltaic (PV) module- a PV module in which PV cells in close proximity are electrically grouped to form a pixel and are connected to dc-dc converter blocks which reside embedded in the back pane...

Mazumdar, Poornima

2012-12-10T23:59:59.000Z

113

November 21, 2000 PV Lesson Plan 1 Solar Cells  

E-Print Network [OSTI]

November 21, 2000 PV Lesson Plan 1 ≠ Solar Cells Prepared for the Oregon Million Solar Roofs Coalition By Frank Vignola ≠ University of Oregon Solar Radiation Monitoring Lab John Hocken ≠ South Eugene High School Gary Grace ≠ South Eugene High School In Schools #12;1 Solar Cells Lesson Plan Content

Oregon, University of

114

Grid Integrated Distributed PV (GridPV) Version 2.  

SciTech Connect (OSTI)

This manual provides the documentation of the MATLAB toolbox of functions for using OpenDSS to simulate the impact of solar energy on the distribution system. The majority of the functio ns are useful for interfacing OpenDSS and MATLAB, and they are of generic use for commanding OpenDSS from MATLAB and retrieving information from simulations. A set of functions is also included for modeling PV plant output and setting up the PV plant in th e OpenDSS simulation. The toolbox contains functions for modeling the OpenDSS distribution feeder on satellite images with GPS coordinates. Finally, example simulations functions are included to show potential uses of the toolbox functions. Each function i n the toolbox is documented with the function use syntax, full description, function input list, function output list, example use, and example output.

Reno, Matthew J.; Coogan, Kyle

2014-12-01T23:59:59.000Z

115

Developing new high energy gradient concentration cathode material |  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat Pump Models |Conduct, Parent Companya new high capacity anode with longDepartment

116

Time series power flow analysis for distribution connected PV generation.  

SciTech Connect (OSTI)

Distributed photovoltaic (PV) projects must go through an interconnection study process before connecting to the distribution grid. These studies are intended to identify the likely impacts and mitigation alternatives. In the majority of the cases, system impacts can be ruled out or mitigation can be identified without an involved study, through a screening process or a simple supplemental review study. For some proposed projects, expensive and time-consuming interconnection studies are required. The challenges to performing the studies are twofold. First, every study scenario is potentially unique, as the studies are often highly specific to the amount of PV generation capacity that varies greatly from feeder to feeder and is often unevenly distributed along the same feeder. This can cause location-specific impacts and mitigations. The second challenge is the inherent variability in PV power output which can interact with feeder operation in complex ways, by affecting the operation of voltage regulation and protection devices. The typical simulation tools and methods in use today for distribution system planning are often not adequate to accurately assess these potential impacts. This report demonstrates how quasi-static time series (QSTS) simulation and high time-resolution data can be used to assess the potential impacts in a more comprehensive manner. The QSTS simulations are applied to a set of sample feeders with high PV deployment to illustrate the usefulness of the approach. The report describes methods that can help determine how PV affects distribution system operations. The simulation results are focused on enhancing the understanding of the underlying technical issues. The examples also highlight the steps needed to perform QSTS simulation and describe the data needed to drive the simulations. The goal of this report is to make the methodology of time series power flow analysis readily accessible to utilities and others responsible for evaluating potential PV impacts.

Broderick, Robert Joseph; Quiroz, Jimmy Edward; Ellis, Abraham; Reno, Matthew J. [Georgia Institute of Technology, Atlanta, GA; Smith, Jeff [Electric Power Research Institute, Knoxville, TN; Dugan, Roger [Electric Power Research Institute, Knoxville, TN

2013-01-01T23:59:59.000Z

117

Piston-driven flow of highly concentrated suspensions Ralf B. Lukner and Roger T. Bonnecazea)  

E-Print Network [OSTI]

Piston-driven flow of highly concentrated suspensions Ralf B. Lukner and Roger T. Bonnecazea October 1998; final revision received 4 February 1999) Synopsis The piston-driven flow of highly concentrated suspensions 55% or 59% by volume solids of dense spheres was investigated as a function of piston

118

Creating dynamic equivalent PV circuit models with impedance spectroscopy for arc-fault modeling.  

SciTech Connect (OSTI)

Article 690.11 in the 2011 National Electrical Code{reg_sign} (NEC{reg_sign}) requires new photovoltaic (PV) systems on or penetrating a building to include a listed arc fault protection device. Currently there is little experimental or empirical research into the behavior of the arcing frequencies through PV components despite the potential for modules and other PV components to filter or attenuate arcing signatures that could render the arc detector ineffective. To model AC arcing signal propagation along PV strings, the well-studied DC diode models were found to inadequately capture the behavior of high frequency arcing signals. Instead dynamic equivalent circuit models of PV modules were required to describe the impedance for alternating currents in modules. The nonlinearities present in PV cells resulting from irradiance, temperature, frequency, and bias voltage variations make modeling these systems challenging. Linearized dynamic equivalent circuits were created for multiple PV module manufacturers and module technologies. The equivalent resistances and capacitances for the modules were determined using impedance spectroscopy with no bias voltage and no irradiance. The equivalent circuit model was employed to evaluate modules having irradiance conditions that could not be measured directly with the instrumentation. Although there was a wide range of circuit component values, the complex impedance model does not predict filtering of arc fault frequencies in PV strings for any irradiance level. Experimental results with no irradiance agree with the model and show nearly no attenuation for 1 Hz to 100 kHz input frequencies.

Johnson, Jay Dean; Kuszmaul, Scott S.; Strauch, Jason E.; Schoenwald, David Alan

2011-06-01T23:59:59.000Z

119

NRELźs PV Tools on the Web: Open PV Project  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

NREL's PV Tools on the Web: The OpenPV Project NREL TAP Webinar Ted Quinby March 24, 2010 National Renewable Energy Laboratory Innovation for Our Energy Future Overview National...

120

Lassen Municipal Utility District- PV Rebate Program  

Broader source: Energy.gov [DOE]

Lassen Municipal Utility District (LMUD) is providing incentives for its customers to purchase solar electric photovoltaic (PV) systems. Rebate levels will decrease annually over the life of the...

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Sandia National Laboratories: PV Performance Modeling Collaborative  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

being pursued in this collaborative include: PVPMC Website: (http:pvpmc.org) Matlab(tm) PV Performance Modeling Toolbox (PVLIB Toolbox can be downloaded on http:...

122

Lodi Electric Utility- PV Rebate Program  

Broader source: Energy.gov [DOE]

Lodi Electric Utility offers rebates to its residential, commercial, industrial and municipal customers who install photovoltaic (PV) systems. The rebate program is funded with approximately $6...

123

Ensuring Quality of PV Modules: Preprint  

SciTech Connect (OSTI)

Photovoltaic (PV) customers need to have confidence in the PV modules they purchase. Currently, no test can quantify a module's lifetime with confidence, but stress tests are routinely used to differentiate PV product designs. We suggest that the industry would be strengthened by using the wisdom of the community to develop a single set of tests that will help customers quantify confidence in PV products. This paper evaluates the need for quality assurance (QA) standards and suggests a path for creating these. Two types of standards are needed: 1) QA of the module design and 2) QA of the manufacturing process.

Kurtz, S.; Wohlgemuth, J.; Hacke, P.; Kempe, M.; Sample, T.; Yamamichi, M.; Kondo, M.; Doi, T.; Otani, K.; Amano, J.

2011-07-01T23:59:59.000Z

124

Updating Interconnection Screens for PV System Integration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Abraham Ellis, Roger Hill Sandia National Laboratories Tom Key, Kristen Nicole, Jeff Smith Electric Power Research Institute Updating Interconnection Screens for PV System...

125

CPS Energy- Solar PV Rebate Program  

Broader source: Energy.gov [DOE]

CPS Energy, San Antonio's municipal utility, offers rebates to customers who install solar photovoltaic (PV) systems on their homes, schools, or businesses. There are four rebate "tiers" available...

126

High Mercury Concentrations Reflect Trophic Ecology of Three Deep-Water Chondrichthyans  

E-Print Network [OSTI]

High Mercury Concentrations Reflect Trophic Ecology of Three Deep-Water Chondrichthyans Michael C concentrations were explored for three deep-water chondrichthyans (Etmopterus princeps, Cen- troscymnus position in the trophic web (as indicated by differences in d15 N). Mercury is a major contaminant

Newman, Michael C.

127

NREL: Photovoltaics Research - PV News  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratory | NationalJohn F. Geisz, Ph.D. Principal ScientistOutdoor TestPV

128

Sunshine PV | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-g GrantAtlas (PACAOpenSummerside WindSolar Energy JumpSunrainPV Jump to:

129

Kenmos PV | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 - 429 Throttled (botOpen6 ClimateKamas,Kelsey NorthKenmec MechanicalKenmos PV Jump

130

Sandia National Laboratories: PV Facilities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLong RangePILSResourcesPV Contacts

131

Sandia National Laboratories: PV Publications  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLongAnalysisPVPublications PV Publications

132

Sandia National Laboratories: PV Value  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems Reliability SandiaTech

133

Sandia National Laboratories: PV bankability  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems

134

Sandia National Laboratories: PV evaluation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systemsconcentrators Sandians

135

Sandia National Laboratories: PV inverters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systemsconcentrators

136

Sandia National Laboratories: PV modules  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systemsconcentratorsmodulemodules

137

PV Ramping in a Distributed Generation Environment: A Study Using Solar Measurements; Preprint  

SciTech Connect (OSTI)

Variability in Photovoltaic (PV) generation resulting from variability in the solar radiation over the PV arrays is a topic of continuing concern for those involved with integrating renewables onto existing electrical grids. The island of Lanai, Hawaii is an extreme example of the challenges that integrators will face due to the fact that it is a small standalone grid. One way to study this problem is to take high-resolution solar measurements in multiple locations and model simultaneous PV production for various sizes at those locations. The National Renewable Energy Laboratory (NREL) collected high-resolution solar data at four locations on the island where proposed PV plants will be deployed in the near future. This data set provides unique insight into how the solar radiation may vary between points that are proximal in distance, but diverse in weather, due to the formation of orographic clouds in the center of the island. Using information about each proposed PV plant size, power output was created at high resolution. The team analyzed this output to understand power production ramps at individual locations and the effects of aggregating the production from all four locations. Hawaii is a unique environment, with extremely variable events occurring on a daily basis. This study provided an excellent opportunity for understanding potential worst-case scenarios for PV ramping. This paper provides an introduction to the datasets that NREL collected over a year and a comprehensive analysis of PV variability in a distributed generation scenario.

Sengupta, M.; Keller, J.

2012-06-01T23:59:59.000Z

138

Berkeley Program Offers New Option for Financing Residential PV Systems  

SciTech Connect (OSTI)

Readily accessible credit has often been cited as a necessary ingredient to open up the market for residential photovoltaic (PV) systems. Though financing does not reduce the high up-front cost of PV, by spreading that cost over some portion of the system's life, financing can certainly make PV systems more affordable. As a result, a number of states have, in the past, set up special residential loan programs targeting the installation of renewable energy systems and/or energy-efficiency improvements and often featuring low interest rates, longer terms and no-hassle application requirements. Historically, these loan programs have had mixed success (particularly for PV), for a variety of reasons, including a historical lack of homeowner interest in PV, a lack of program awareness, a reduced appeal in a low-interest-rate environment, and a tendency for early PV adopters to be wealthy and not in need of financing. Some of these barriers have begun to fade. Most notably, homeowner interest in PV has grown in some states, particularly those that offer solar rebates. The passage of the Energy Policy Act of 2005 (EPAct 2005), however, introduced one additional roadblock to the success of low-interest PV loan programs: a residential solar investment tax credit (ITC), subject to the Federal government's 'anti-double-dipping' rules. Specifically, the residential solar ITC--equal to 30% of the system's tax basis, capped at $2000--will be reduced or offset if the system also benefits from what is known as 'subsidized energy financing', which is likely to include most government-sponsored low-interest loan programs. Within this context, it has been interesting to note the recent flurry of announcements from a number of U.S cities concerning a new type of PV financing program. Led by the city of Berkeley, Calif., these cities propose to offer their residents the ability to finance the installation of a PV system using increased property tax assessments, rather than a more-traditional credit vehicle, to recover both system and administrative costs. This approach has a number of features that should appeal to PV owners, including long-term, fixed-cost, attractive financing; loans that are tied to the tax capacity of the property rather than to the owner's credit standing; a repayment obligation that transfers along with the sale of the property; and a potential ability to deduct the repayment obligation from federal taxable income as part of the local property tax deduction. For these reasons, Berkeley's program, which was first announced on October 23, 2007, has received considerable nationwide attention in both the trade and general press. Since the announcement, cities from throughout California and the broader U.S. have expressed keen interest in the possibility of replicating this type of program. In California alone, the cities of Santa Cruz, Santa Monica and Palm Desert are all reportedly considering similar programs, while the city of San Francisco has recently announced its own program, portions of which closely parallel Berkeley's approach. In addition, a bill (AB 811) that would authorize all cities in California, not just charter cities like Berkeley, to create this type of program was approved by the California General Assembly on January 29 and is currently under consideration in the State Senate. A similar bill in Colorado (HB 1350) was signed into law on May 28. Elsewhere, the city of Tucson, Arizona has also considered this financing approach.

Bolinger, Mark A

2008-07-06T23:59:59.000Z

139

Techno-economic Appraisal of Concentrating Solar Power Systems (CSP).  

E-Print Network [OSTI]

?? The diffusion of Concentrating Solar Power Systems (CSP) systems is currently taking place at a much slower pace than photovoltaic (PV) power systems. ThisÖ (more)

Gasti, Maria

2013-01-01T23:59:59.000Z

140

INTEGRATION OF PV IN DEMAND RESPONSE  

E-Print Network [OSTI]

INTEGRATION OF PV IN DEMAND RESPONSE PROGRAMS Prepared by Richard Perez et al. NREL subcontract response programs. This is because PV generation acts as a catalyst to demand response, markedly enhancing by solid evidence from three utility case studies. BACKGROUND Demand Response: demand response (DR

Perez, Richard R.

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Draft Transcript on Municipal PV Systems  

Broader source: Energy.gov [DOE]

Webinar on navigating the legal, tax, and finance issues associated with the installation of Municipal PV Systems. The following agenda was developed based on Pat Boylston's experience assisting municipalities with their PV projects and the requests for information that the Solar America City technical team leads have received from many of the 25 Solar America Cities since the April 2008 meeting in Tucson.

142

Agenda for the PV Module Reliability Workshop, February 26 -...  

Broader source: Energy.gov (indexed) [DOE]

Agenda for the PV Module Reliability Workshop, February 26 - 27 2013, Golden, Colorado Agenda for the PV Module Reliability Workshop, February 26 - 27 2013, Golden, Colorado This...

143

axonopodis pv passiflorae: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

effective capacity of grid-connected PV power plants. The predicted and actual utility peak load reduction performance of PV power plants are compared for two case studies:...

144

axonopodis pv citri: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

effective capacity of grid-connected PV power plants. The predicted and actual utility peak load reduction performance of PV power plants are compared for two case studies:...

145

axonopodis pv malvacearum: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

effective capacity of grid-connected PV power plants. The predicted and actual utility peak load reduction performance of PV power plants are compared for two case studies:...

146

Sandia National Laboratories: Sandia Will Host PV Bankability...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ateECEnergyComputational Modeling & SimulationSandia Will Host PV Bankability Workshop at Solar Power International (SPI) 2013 Sandia Will Host PV Bankability Workshop at Solar...

147

Department of Veterans Affairs, FONSI - Rooftop solar PV power...  

Broader source: Energy.gov (indexed) [DOE]

Rooftop solar PV power at Calverton National Cemetery Department of Veterans Affairs, FONSI - Rooftop solar PV power at Calverton National Cemetery An Environmental Assessment (EA)...

148

Statistical and Domain Analytics Applied to PV Module Lifetime...  

Broader source: Energy.gov (indexed) [DOE]

Degradation Science Statistical and Domain Analytics Applied to PV Module Lifetime and Degradation Science Presented at the PV Module Reliability Workshop, February 26 - 27...

149

Integrating Solar PV into Energy Services Performance Contracts...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Integrating Solar PV into Energy Services Performance Contracts: Options for Local Governments Nationwide Integrating Solar PV into Energy Services Performance Contracts: Options...

150

Tucson Request for Proposal for 1-5 MW PV PPA  

Broader source: Energy.gov [DOE]

The mission of Tucson Water, a Department of the City of Tucson (the City), is to ensure that its customers receive high quality water and excellent service in a cost efficient, safe and environmentally responsible manner. In the interest of furthering Tucson Waters mission, the City is seeking a Contractor to finance, design, build, commission, own, operate and maintain up to a 1 megawatt (MW) DCSTC hotovoltaic (PV) system. The City also seeks an option for expanding the PV system up to a total of 5 MW DCSTC PV.

151

Solar Works! In Seattle: Introduction to Solar Electric (PV)  

Broader source: Energy.gov [DOE]

Presentation slides from residential PV workshop. Also covers general solar resource assessment, siting and financial incentives.

152

Preparation of a high concentration of lithium-7 atoms in a magneto-optical trap  

SciTech Connect (OSTI)

This study is aimed at obtaining high concentration of optically cooled lithium-7 atoms for preparing strongly interacting ultracold plasma and Rydberg matter. A special setup has been constructed, in which two high-power semiconductor lasers are used to cool lithium-7 atoms in a magneto-optical trap. At an optimum detuning of the cooling laser frequency and a magnetic field gradient of 35 G/cm, the concentration of ultracold lithium-7 atoms reaches about 10{sup 11} cm{sup ?3}. Additional independent information about the concentration and number of ultracold lithium-7 atoms on different sublevels of the ground state was obtained by using of an additional probing laser.

Zelener, B. B., E-mail: bobozel@mail.ru; Saakyan, S. A.; Sautenkov, V. A. [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation); Manykin, E. A. [National Research Nuclear University ďMoscow Engineering Physics Institute,Ē (Russian Federation); Zelener, B. V.; Fortov, V. E. [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)

2014-11-15T23:59:59.000Z

153

City of Lompoc Utilities- PV Rebate Program  

Broader source: Energy.gov [DOE]

City of Lompoc Utilities provides rebates to its electric customers who purchase and install photovoltaic (PV) systems. The rebate is $2.00 per watt-AC. The incentive amount may not exceed 50% the...

154

PV1 model verification and validation  

E-Print Network [OSTI]

The purpose of this document is 1) to describe, in detail, the theoretic foundation on which PV1 is based, 2) indicate the manner in which its theoretical foundation has been translated into a practical, useful tool for ...

Fuller, Frank H.

1981-01-01T23:59:59.000Z

155

Austin Energy- Residential Solar PV Rebate Program  

Broader source: Energy.gov [DOE]

Austin Energy's Solar Rebate Program offers a $1.50 per watt incentive to eligible residential who install photovoltaic (PV) systems on their homes. Rebates are limited to $15,000 per home...

156

Austin Energy- Commercial PV Incentive Program  

Broader source: Energy.gov [DOE]

Austin Energy, a municipal utility, offers a production incentive to its commercial and multi-family residential customers for electricity generated by qualifying photovoltaic (PV) systems of up to...

157

IID Energy- PV Solutions Rebate Program  

Broader source: Energy.gov [DOE]

'''''IID accepted applications for the 2013 PV Solutions Program from Jan. 2, 2013 Ė Jan. 31, 2013. Winners were determined via lottery. The program is now closed for the remainder of 2013, but...

158

Merced Irrigation District- PV Buydown Program  

Broader source: Energy.gov [DOE]

Merced Irrigation District (MID) offers its residential, commercial and non-profit customers a rebate for installing solar electric photovoltaic (PV) systems on their homes and offices. The rebate...

159

SMUD- PV Residential Retrofit Buy-Down  

Broader source: Energy.gov [DOE]

SMUD offers an incentive of $0.20 per watt (W) AC to residential customers who install grid-connected photovoltaic (PV) systems. Customers do not have to contract directly with SMUD-approved...

160

PV Module Reliability Research (Fact Sheet)  

SciTech Connect (OSTI)

This National Center for Photovoltaics sheet describes the capabilities of its PV module reliability research. The scope and core competencies and capabilities are discussed and recent publications are listed.

Not Available

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Pacific Power- PV Rebate Program (California)  

Broader source: Energy.gov [DOE]

Pacific Power is providing rebates to their customers who install photovoltaic (PV) systems on their homes and facilities. These rebates step down over time as key installation targets are met. As...

162

PV Power Plants Conference USA 2012  

Broader source: Energy.gov [DOE]

The 4th PV Power Plants conference will cover relevant topics for successful project development and sustainable business. This year's event will have an additional focus on certain distributed...

163

Distributed PV Permitting and Inspection Processes  

Broader source: Energy.gov [DOE]

This presentation summarizes case studies of the time and cost involved in the distributed PV permitting and inspection process in three Solar America Cities, Austin, Portland, and Salt Lake City.

164

Can a Convective Cloud Feedback Help to Eliminate Winter Sea Ice at High CO2 Concentrations?  

E-Print Network [OSTI]

have remote effects on global climate as well. Accurate forecasting of winter sea ice has significantCan a Convective Cloud Feedback Help to Eliminate Winter Sea Ice at High CO2 Concentrations? DORIAN) ABSTRACT Winter sea ice dramatically cools the Arctic climate during the coldest months of the year and may

Tziperman, Eli

165

High precision measurements of atmospheric concentrations and plant exchange rates of carbonyl  

E-Print Network [OSTI]

High precision measurements of atmospheric concentrations and plant exchange rates of carbonyl K I R * *Environmental Sciences and Energy Research, The Weizmann Institute of Science, Rehovot. The results were consistent with those of nononline gas chromatography­mass spectrometry for COS and IR gas

Yakir, Dan

166

Estimation of CO concentration in high temperature PEM fuel cells using electrochemical impedance spectroscopy  

E-Print Network [OSTI]

Estimation of CO concentration in high temperature PEM fuel cells using electrochemical impedance (Numbers are presented in Tian et al. (2010)) and cost effectiveness (Price development for Fuel Cells / grid during the test. Efforts have been made in increasing operating temperatures of PEM fuel cells

Berning, Torsten

167

Performance modeling and cell design for high concentration methanol fuel cells  

E-Print Network [OSTI]

) it reduces the fuel efficiency (methanol is reacted without producing electrical current). We canChapter 50 Performance modeling and cell design for high concentration methanol fuel cells C. E The direct methanol fuel cell (DMFC) has become a lead- ing contender to replace the lithium-ion (Li

168

PV array simulator development and validation.  

SciTech Connect (OSTI)

The ability to harvest all available energy from a photovoltaic (PV) array is essential if new system developments are to meet levelized cost of energy targets and achieve grid parity with conventional centralized utility power. Therefore, exercising maximum power point tracking (MPPT) algorithms, dynamic irradiance condition operation and startup and shutdown routines and evaluating inverter performance with various PV module fill-factor characteristics must be performed with a repeatable, reliable PV source. Sandia National Laboratories is collaborating with Ametek Programmable Power to develop and demonstrate a multi-port TerraSAS PV array simulator. The simulator will replicate challenging PV module profiles, enabling the evaluation of inverter performance through analyses of the parameters listed above. Energy harvest algorithms have traditionally implemented methods that successfully utilize available energy. However, the quantification of energy capture has always been difficult to conduct, specifically when characterizing the inverter performance under non-reproducible dynamic irradiance conditions. Theoretical models of the MPPT algorithms can simulate capture effectiveness, but full validation requires a DC source with representative field effects. The DC source being developed by Ametek and validated by Sandia is a fully integrated system that can simulate an IV curve from the Solar Advisor Model (SAM) module data base. The PV simulator allows the user to change the fill factor by programming the maximum power point voltage and current parameters and the open circuit voltage and short circuit current. The integrated PV simulator can incorporate captured irradiance and module temperature data files for playback, and scripted profiles can be generated to validate new emerging hardware embedded with existing and evolving MPPT algorithms. Since the simulator has multiple independent outputs, it also has the flexibility to evaluate an inverter with multiple MPPT DC inputs. The flexibility of the PV simulator enables the validation of the inverter's capability to handle vastly different array configurations.

Kuszmaul, Scott S.; Gonzalez, Sigifredo; Lucca, Roberto (Ametek Programmable Power, San Diego, CA); Deuel, Don (Ametek Programmable Power, San Diego, CA)

2010-06-01T23:59:59.000Z

169

PV System Energy Evaluation Method (Presentation)  

SciTech Connect (OSTI)

This presentation describes a comparison of the "predicted" energy (based on historical weather data) with the "expected" energy (based on the measured weather data) to determine whether a PV system is performing as modeled in order to verify the accuracy of a model. A key factor in defining this energy test is determining the test boundary so that weather variations are not inadvertently included in what is considered to be PV system performance.

Kurtz, S.

2014-01-01T23:59:59.000Z

170

Sandia National Laboratories: high PV penetration levels  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia,evaluatingfull moduleresources gridstandby positionshigh

171

Calculation of multicomponent ionic diffusion from zero to high concentration: II. Inclusion of associated ion species  

SciTech Connect (OSTI)

This paper presents a theoretical model of multicomponent ionic diffusion which is valid to high concentration for systems which show ion association. The results of the authors' formulations are contrasted with those of more simplified models for systems containing Na{sub 2}SO{sub 4} and MgSO{sub 4}, as well as for multicomponent natural seawater. The differences between their model and simplified models are significant, especially at high concentration. Inconsistencies which may develop with the use of the simplified approaches are demonstrated. The authors' approach requires considerable data which are not available at temperatures other than 25{degree}C. Therefore, other approaches which are based only on data at infinite dilution are of great interest. They show here that, if chemical potential derivatives are included in the infinite dilution model of Nernst and Hartley which uses only infinite dilution mobilities, the model can be extended to slightly concentrated solutions. This extended Nernst-Hartley model gives good agreement with all of the existing experimental mutual diffusion coefficient data at concentrations below about 0.2 M in the six component system Na-K-Ca-Mg-Cl-SO{sub 4}-H{sub 2}O. This may be the most reliable way to extend infinite dilution data into more concentrated regions. In the systems they have studied, the inclusion of ion-association species for weakly interacting species does not appear to provide significant improvement over the generalized Nernst-Hartley model.

Felmy, A.R.; Weare, J.H. (Univ. of California, San Diego, La Jolla (USA))

1991-01-01T23:59:59.000Z

172

Technology Overview: Concentrator PV 2010 Boot Camp (CPV) (Presentation)  

SciTech Connect (OSTI)

The presentation introduces the various types of CPV technologies and provides a status report of today's CPV companies. Six different architectures of multijunction cells are shown to near or surpass 40% in efficiency. The design space for CPV is quite complex, which is a curse for those trying to narrow it down for the first prototype, but a blessing for those who want multiple pathways for product improvement in coming years.

Kurtz, S.; Bett, A.; Hartsoch, N.

2010-10-11T23:59:59.000Z

173

RADIOACTIVE HIGH LEVEL WASTE TANK PITTING PREDICTIONS: AN INVESTIGATION INTO CRITICAL SOLUTION CONCENTRATIONS  

SciTech Connect (OSTI)

A series of cyclic potentiodynamic polarization tests was performed on samples of ASTM A537 carbon steel in support of a probability-based approach to evaluate the effect of chloride and sulfate on corrosion the steel?s susceptibility to pitting corrosion. Testing solutions were chosen to systemically evaluate the influence of the secondary aggressive species, chloride, and sulfate, in the nitrate based, high-level wastes. The results suggest that evaluating the combined effect of all aggressive species, nitrate, chloride, and sulfate, provides a consistent response for determining corrosion susceptibility. The results of this work emphasize the importance for not only nitrate concentration limits, but also chloride and sulfate concentration limits.

Hoffman, E.

2012-11-08T23:59:59.000Z

174

Development of a commercial photovoltaic concentrator module  

SciTech Connect (OSTI)

The ojective of this work was to develop the design and prototype of a commercial high-concentration photovoltaic (PV) module. The design is for a 282-sun point-focus concentrating module. Most of the components, subassemblies, and design features incorporate simplifications and ease of manufacturing. The Solar Kinetics, Inc. (SKI) module is designed to incorporate high-efficiency, single-crystal silicon PV cells. The housing is made with aluminum laminated for voltage stand-off and simultaneously providing high thermal conductivity. The Fresnel lens injection molded by American Optical (AO) as singles. The cell assembly consists of a copper heat spreader, a photovoltaic cell soldered, a top and bottom contact, and a reflective secondary optical element (SOE). The cell assemblies passed all of the initial electrical characterization and high-potential tests. Under environmental cycling, the only bond that failed was the PV cell-to-heat spreader interface. The other components (top contact, bottom contact, SOE) passed all the environmental cycling tests. The cell assemblies were designed to be mounted onto the receiver section with a thermally conductive RTV. This geometry was subjected to environmental testing. There was no delamination of this bond nor was there electrical breakdown when the assemblies were subjected to the hi-pot test. A mock module was fabricated for environmental evaluation. This module was subjected to the humidity/freeze cycling to assess the performance of the lens mounting design. This module was also subjected to the rain test after the humidity/freeze cycling and checked for water leaks. The lens showed small displacement from its original position after the environmental cycling. One tablespoon of water did collect inside the module.

Saifee, S.T.; Hutchison, G. [Solar Kinetics, Inc., Dallas, TX (United States)

1992-09-01T23:59:59.000Z

175

Rooftop PV system. Final technical progress report, Phase II  

SciTech Connect (OSTI)

Under this four-year PV:BONUS Program, ECD and United Solar are developing and demonstrating two new lightweight flexible building integrated Photovoltaic (BIPV) modules specifically designed as exact replacements for conventional asphalt shingles and standing seam metal roofing. These modules can be economically and aesthetically integrated into new residential and commercial buildings, and address the even larger roofing replacement market. The modules are designed to be installed by roofing contractors without special training which minimizes the installation and balance of system costs. The modules will be fabricated from high-efficiency, multiple-junction a-Si alloy solar cells developed by ECD and United Solar. Under the Phase I Program, which ended in March 1994, we developed two different concept designs for rooftop PV modules: (1) the United Solar overlapping (asphalt shingle replacement) shingle-type modules and (2) the ECD metal roof-type modules. We also developed a plan for fabricating, testing and demonstrating these modules. Candidate demonstration sites for our rooftop PV modules were identified and preliminary engineering designs for these demonstrations were developed; a marketing study plan was also developed. The major objectives of the Phase II Program, which started in June 1994 was (1) to develop, test, and qualify these new rooftop modules; (2) to develop mechanical and electrical engineering specifications for the demonstration projects; and (3) to develop a marketing/commercialization plan.

NONE

1995-08-01T23:59:59.000Z

176

An efficient method for visualization and growth of fluorescent Xanthomonas oryzae pv. oryzae in planta.  

E-Print Network [OSTI]

strains, plants and growth conditions Xanthomonas oryzae pv.Xanthomonas oryzae pv. oryzae. Mol Plant Microbe InteractOryzae sativa L. ) plants. X. oryzae pv. oryzae infection

Han, Sang-Wook; Park, Chang-Jin; Lee, Sang-Won; Ronald, Pamela C

2008-01-01T23:59:59.000Z

177

Holdover inoculum of Pseudomonas syringae pv. alisalensis from broccoli raab causes disease in subsequent plantings  

E-Print Network [OSTI]

about P. syringae pv. Plant Disease / August 2006 ABSTRACTsyringae pv. lachrymans in soil, plant debris, and thesyringae pv. tomato populations on field tomato plants.

Cintas, N A; Koike, S T; Bunch, R A; Bull, C T

2006-01-01T23:59:59.000Z

178

Ge doped GaN with controllable high carrier concentration for plasmonic applications  

SciTech Connect (OSTI)

Controllable Ge doping in GaN is demonstrated for carrier concentrations of up to 2.4?◊?10{sup 20} cm{sup ?3}. Low temperature luminescence spectra from the highly doped samples reveal band gap renormalization and band filling (Burstein-Moss shift) in addition to a sharp transition. Infrared ellipsometry spectra demonstrate the existence of electron plasma with an energy around 3500?cm{sup ?1} and a surface plasma with an energy around 2000?cm{sup ?1}. These findings open possibilities for the application of highly doped GaN for plasmonic devices.

Kirste, Ronny; Hoffmann, Marc P.; Sachet, Edward; Bobea, Milena; Bryan, Zachary; Bryan, Isaac; Maria, Jon-Paul; Collazo, Ramůn; Sitar, Zlatko [Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7919 (United States)] [Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7919 (United States); Nenstiel, Christian; Hoffmann, Axel [Institut f?r FestkŲrperphsyik, TU-Berlin, Hardenbergstrasse 36, 10623 Berlin (Germany)] [Institut f?r FestkŲrperphsyik, TU-Berlin, Hardenbergstrasse 36, 10623 Berlin (Germany)

2013-12-09T23:59:59.000Z

179

PV performance modeling workshop summary report.  

SciTech Connect (OSTI)

During the development of a solar photovoltaic (PV) energy project, predicting expected energy production from a system is a key part of understanding system value. System energy production is a function of the system design and location, the mounting configuration, the power conversion system, and the module technology, as well as the solar resource. Even if all other variables are held constant, annual energy yield (kWh/kWp) will vary among module technologies because of differences in response to low-light levels and temperature. A number of PV system performance models have been developed and are in use, but little has been published on validation of these models or the accuracy and uncertainty of their output. With support from the U.S. Department of Energy's Solar Energy Technologies Program, Sandia National Laboratories organized a PV Performance Modeling Workshop in Albuquerque, New Mexico, September 22-23, 2010. The workshop was intended to address the current state of PV system models, develop a path forward for establishing best practices on PV system performance modeling, and set the stage for standardization of testing and validation procedures for models and input parameters. This report summarizes discussions and presentations from the workshop, as well as examines opportunities for collaborative efforts to develop objective comparisons between models and across sites and applications.

Stein, Joshua S.; Tasca, Coryne Adelle (SRA International, Inc., Fairfax, VA); Cameron, Christopher P.

2011-05-01T23:59:59.000Z

180

Dissolution of plutonium oxide in nitric acid at high hydrofluoric acid concentrations  

SciTech Connect (OSTI)

The dissolution of plutonium dioxide in nitirc acid (HNO/sub 3/) at high hydrofluoric acid (HF) concentrations has been investigated. Dissolution rate curves were obtained using 12M HNO/sub 3/ and HF at concentrations varying from 0.05 to 1.0 molar. The dissolution rate increased with HF concentration up to 0.2M and then decreased at higher concentrations. There was very little plutonium dissolved at 0.7 and 1.0M HF because of the formation of insoluble PuF/sub 4/. Various oxidizing agents were added to 12M HNO/sub 3/-1M HF dissolvent to oxidize Pu(IV) to Pu(VI) and prevent the formation of PuF/sub 4/. Ceric (Ce(IV)) and silver (Ag(II)) ions were the most effective in dissolving PuO/sub 2/. Although these two oxidants greatly increased the dissolution rate, the rates were not as rapid as those obtained with 12M HNO/sub 3/-0.2M HF.

Kazanjian, A.R.; Stevens, J.R.

1984-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Evaluation of Encapsulant Materials for PV Applications  

SciTech Connect (OSTI)

Encapsulant materials used in PV modules serve multiple purposes. They physically hold components in place, provide electrical insulation, optically couple superstrate materials (e.g., glass) to PV cells, protect components from mechanical stress by mechanically de-coupling components via strain relief, and protect materials from corrosion. To do this, encapsulants must adhere well to all surfaces, remain compliant, and transmit light after exposure to temperature, humidity, and UV radiation histories. Encapsulant materials by themselves do not completely prevent water vapour ingress [1-3], but if they are well adhered, they will prevent the accumulation of liquid water providing protection against corrosion as well as electrical shock. Here, a brief review of some of the polymeric materials under consideration for PV applications is provided, with an explanation of some of their advantages and disadvantages.

Kempe, M.

2010-01-01T23:59:59.000Z

182

High Efficiency Nanostructured III-V Photovoltaics for Solar Concentrator Application  

SciTech Connect (OSTI)

The High Efficiency Nanostructured III-V Photovoltaics for Solar Concentrators project seeks to provide new photovoltaic cells for Concentrator Photovoltaics (CPV) Systems with higher cell efficiency, more favorable temperature coefficients and less sensitivity to changes in spectral distribution. The main objective of this project is to provide high efficiency III-V solar cells that will reduce the overall cost per Watt for power generation using CPV systems.This work is focused both on a potential near term application, namely the use of indium arsenide (InAs) QDs to spectrally "tune" the middle (GaAs) cell of a SOA triple junction device to a more favorable effective bandgap, as well as the long term goal of demonstrating intermediate band solar cell effects. The QDs are confined within a high electric field i-region of a standard GaAs solar cell. The extended absorption spectrum (and thus enhanced short circuit current) of the QD solar cell results from the increase in the sub GaAs bandgap spectral response that is achievable as quantum dot layers are introduced into the i-region. We have grown InAs quantum dots by OMVPE technique and optimized the QD growth conditions. Arrays of up to 40 layers of strain balanced quantum dots have been experimentally demonstrated with good material quality, low residual stain and high PL intensity. Quantum dot enhanced solar cells were grown and tested under simulated one sun AM1.5 conditions. Concentrator solar cells have been grown and fabricated with 5-40 layers of QDs. Testing of these devices show the QD cells have improved efficiency compared to baseline devices without QDs. Device modeling and measurement of thermal properties were performed using Crosslight APSYS. Improvements in a triple junction solar cell with the insertion of QDs into the middle current limiting junction was shown to be as high as 29% under one sun illumination for a 10 layer stack QD enhanced triple junction solar cell. QD devices have strong potential for net gains in efficiency at high concentration.

Hubbard, Seth

2012-09-12T23:59:59.000Z

183

Large-Scale PV Integration Study  

SciTech Connect (OSTI)

This research effort evaluates the impact of large-scale photovoltaic (PV) and distributed generation (DG) output on NV Energyís electric grid system in southern Nevada. It analyzes the ability of NV Energyís generation to accommodate increasing amounts of utility-scale PV and DG, and the resulting cost of integrating variable renewable resources. The study was jointly funded by the United States Department of Energy and NV Energy, and conducted by a project team comprised of industry experts and research scientists from Navigant Consulting Inc., Sandia National Laboratories, Pacific Northwest National Laboratory and NV Energy.

Lu, Shuai; Etingov, Pavel V.; Diao, Ruisheng; Ma, Jian; Samaan, Nader A.; Makarov, Yuri V.; Guo, Xinxin; Hafen, Ryan P.; Jin, Chunlian; Kirkham, Harold; Shlatz, Eugene; Frantzis, Lisa; McClive, Timothy; Karlson, Gregory; Acharya, Dhruv; Ellis, Abraham; Stein, Joshua; Hansen, Clifford; Chadliev, Vladimir; Smart, Michael; Salgo, Richard; Sorensen, Rahn; Allen, Barbara; Idelchik, Boris

2011-07-29T23:59:59.000Z

184

Updating Interconnection Screens for PV System Integration  

SciTech Connect (OSTI)

This white paper evaluates the origins and usefulness of the capacity penetration screen, offer short-term solutions which could effectively allow fast-track interconnection to many PV system applications, and considers longer-term solutions for increasing PV deployment levels in a safe and reliable manner while reducing or eliminating the emphasis on the penetration screen. Short-term and longer-term alternatives approaches are offered as examples; however, specific modifications to screening procedures should be discussed with stakeholders and must ultimately be adopted by state and federal regulatory bodies.

Coddington, M.; Mather, B.; Kroposki, B.; Lynn, K.; Razon, A.; Ellis, A.; Hill, R.; Key, T.; Nicole, K.; Smith, J.

2012-02-01T23:59:59.000Z

185

Solar PV Incentive Programs | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage ¬Ľ SearchEnergyDepartmentScoping Study |4 SolarPV Incentive Programs Solar PV

186

Sandia National Laboratories: PV_LIB Toolbox  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PVracks HelioVoltPV-TechPV_LIB Toolbox

187

International PV QA Task Force's Proposed Comparative Rating System for PV Modules: Preprint  

SciTech Connect (OSTI)

The International PV Quality Assurance Task Force is developing a rating system that provides comparative information about the relative durability of PV modules. Development of accelerated stress tests that can provide such comparative information is seen as a major step toward being able to predict PV module service life. This paper will provide details of the ongoing effort to determine the format of such an overall module rating system. The latest proposal is based on using three distinct climate zones as defined in IEC 60721-2-1 for two different mounting systems. Specific stresses beyond those used in the qualification tests are being developed for each of the selected climate zones.

Wohlgemuth, J.; Kurtz, S.

2014-10-01T23:59:59.000Z

188

axonopodis pv phaseoli: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

control objective is to balance the power flow from the PV module to the battery and the load such that the PV power is utilized effectively and the battery is charged with three...

189

NREL: Jobs and Economic Competitiveness - Solar PV Manufacturing...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solar PV Manufacturing Cost Analysis Between 2000 and 2010 global shipments of PV cellsmodules grew 53% (compound annual growth rate CAGR). At the same time, the U.S. market...

190

SunShot Presentation PV Module Reliabity Workshop Opening Session...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

SunShot Presentation PV Module Reliabity Workshop Opening Session This PowerPoint slide deck was originally presented at the opening session of the 2013 NREL PV Module...

191

Breakout Session: Getting in the Loop: PV Hardware Recycling...  

Broader source: Energy.gov (indexed) [DOE]

Getting in the Loop: PV Hardware Recycling and Sustainability Breakout Session: Getting in the Loop: PV Hardware Recycling and Sustainability May 21, 2014 6:30PM to 7:30PM PDT...

192

A Wavelet-Based Variability Model (WVM) for Solar PV Power Plants  

E-Print Network [OSTI]

power fluctuations: the pv plant as a low pass filter,"point sensor to the entire PV plant at each timescale isWVM Inputs WVM Outputs PV Plant Footprint Density of PV

Lave, Matthew; Kleissl, Jan; Stein, Joshua S

2013-01-01T23:59:59.000Z

193

Roughage and roughage substitutes in high concentrate finishing mixtures for beef cattle  

E-Print Network [OSTI]

different levels of roughage, showed that maximum levels of 20 to 30% cottonseed hulls, 20 to 30% coastal bermuda hay, 10 to 20/o rice hulls (ammoniated or non-ammoniated) or 10/o flax shives should be used in finishing mixtures if high gain and feed... into four uniform groups on the basis of weight and grade. These groups received four different feed mixtures as follows: all concentrate, 2 and 4%%uo oyster shell flakes and 10% ammoniated rice hulls. The second and third experiments were part of Texas...

Leigh, Jorge Eduardo

1968-01-01T23:59:59.000Z

194

PV Performance and Reliability Validation Capabilities at Sandia...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Performance and Reliability Validation Capabilities at Sandia National Laboratories PV Performance and Reliability Validation Capabilities at Sandia National Laboratories This...

195

El Paso Electric Company- Solar PV Pilot Program  

Broader source: Energy.gov [DOE]

'''''El Paso Electric's 2013 Solar PV Rebate program will reopen at 12:00 pm MST on February 1, 2013.'''''

196

Analyzing and simulating the variability of solar irradiance and solar PV powerplants  

E-Print Network [OSTI]

WVM) for Solar PV Power Plants, Sustainable Energy, IEEESolar PV Power Plants," IEEE Transactions on Sustainable Energy,

Lave, Matthew S.

2012-01-01T23:59:59.000Z

197

A Wavelet-Based Variability Model (WVM) for Solar PV Power Plants  

E-Print Network [OSTI]

simulating solar photovoltaic (PV) power plant output givenfor simulating the power output of a solar photovoltaic (PV)

Lave, Matthew; Kleissl, Jan; Stein, Joshua S

2013-01-01T23:59:59.000Z

198

A Universal Intrinsic Scale of Hole Concentration for High-Tc Cuprates  

E-Print Network [OSTI]

We have measured thermoelectric power (TEP) as a function of hole concentration per CuO2 layer, Ppl, in Y1-xCaxBa2Cu3O6 (Ppl = x/2) with no oxygen in the Cu-O chain layer. The room-temperature TEP as a function of Ppl, S290(Ppl), of Y1-xCaxBa2Cu3O6 behaves identically to that of La2-zSrzCuO4 (Ppl = z). We argue that S290(Ppl) represents a measure of the intrinsic equilibrium electronic states of doped holes and, therefore, can be used as a common scale for the carrier concentrations of layered cuprates. We shows that the Ppl determined by this new universal scale is consistent with both hole concentration microscopically determined by NQR and the hole concentration macroscopically determined by the Cu valency. We find two characteristic scaling temperatures, TS* and TS2*, in the TEP vs. temperature curves that change systematically with doping. Based on the universal scale, we uncover a universal phase diagram in which almost all the experimentally determined pseudogap temperatures as a function of Ppl fall on two common curves; upper pseudogap temperature defined by the TS* versus Ppl curve and lower pseudogap temperature defined by the TS2* versus Ppl curve. We find that while pseudogaps are intrinsic properties of doped holes of a single CuO2 layer for all high-Tc cuprates, Tc depends on the number of layers, therefore the inter-layer coupling, in each individual system.

T. Honma; P. H. Hor; H. H. Hsieh; M. Tanimoto

2004-10-01T23:59:59.000Z

199

Solar Resource and PV Systems Performance  

E-Print Network [OSTI]

Solar Resource and PV Systems Performance at Selected Test Sites Prepared for the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability Under Cooperative Agreement No. DE-FC26-06NT42847 Hawai`i Distributed Energy Resource Technologies for Energy Security Task 8 Deliverable plus

200

(Eigen Phoneme Space (Phoneme Vector : PV)  

E-Print Network [OSTI]

PCA , , ( ) 1 MFCC [1] PCA 2 2.1 [3] (Eigen Phoneme Space : EPS) PCA [2] PCA [3] PCA (EPS) (EPS) (Phoneme Vector : PV) Fig. 1 (EPS) /a/ /i/ ¬∑ ¬∑ ¬∑ PCA (EPS) 2.2 PCA PCA i Si Si = 1 N N t=1 (xi t - ¬Įxi )(xi

Takiguchi, Tetsuya

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

PV Integration by Building Energy Management System  

E-Print Network [OSTI]

. However, to validate global control algorithms, a simulator capable of interoperating with energy[kWh]. Econs (k) Total energy consumed by the load [kWh]. E (i, k) Energy consumed by the service i duringPV Integration by Building Energy Management System Rim.Missaoui¬Ļ, Ghaith.Warkozek¬Ļ, Seddik. Bacha

Boyer, Edmond

202

Experience Curves and Solar PV Fred Heutte, Senior Policy Associate  

E-Print Network [OSTI]

Experience Curves and Solar PV Fred Heutte, Senior Policy Associate NW Energy Coalition September 3 resources costs as being ranges rather than fixed values. It is evident that the question of future solar PV small percentage of all resources at present, there is a strong sense that once solar PV reaches "grid

203

A GUIDE TO PHOTOVOLTAIC (PV) SYSTEM DESIGN AND INSTALLATION  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION A GUIDE TO PHOTOVOLTAIC (PV) SYSTEM DESIGN AND INSTALLATION JUNE 2001 TO PHOTOVOLTAIC (PV) SYSTEM DESIGN AND INSTALLATION Prepared for: California Energy Commission Energy Technology installing photovoltaic (PV) systems under the Emerging Renewables Buydown Program. This is the first

204

Results from measurements on the PV-VENT systems  

E-Print Network [OSTI]

Results from measurements on the PV-VENT systems at Lundebjerg Solar Energy Centre Denmark Danish from measurements on the PV-VENT systems at Lundebjerg S√łren √?stergaard Jensen Solar Energy Centre with (Jensen, 2000a) Solar Energy Centre Denmark's (Danish Technological Institute) measuring work in the PV

205

Interconnecting PV on New York City's Secondary Network  

E-Print Network [OSTI]

Interconnecting PV on New York City's Secondary Network Distribution System K. Anderson, M #12;Technical Report Interconnecting PV on New York NREL/ TP-7A2-46902 City's Secondary Network of Concerns and Solutions to PV Interconnection in New York City 4.0 Utility Application Process Review 5

206

Role of Polycrystalline Thin-Film PV Technologies in Competitive PV Module Markets: Preprint  

SciTech Connect (OSTI)

This paper discusses the developments in thin-film PV technologies and provides an outlook on future commercial module efficiencies achievable based on today's knowledge about champion cell performance.

von Roedern, B.; Ullal, H. S.

2008-05-01T23:59:59.000Z

207

High-temperature photochemical destruction of toxic organic wastes using concentrated solar radiation  

SciTech Connect (OSTI)

Application of concentrated solar energy has been proposed to be a viable waste disposal option. Specifically, this concept of solar induced high-temperature photochemistry is based on the synergistic contribution of concentrated infrared (IR) radiation, which acts as an intense heating source, and near ultraviolet and visible (UV-VIS) radiation, which can induce destructive photochemical processes. Some significant advances have been made in the theoretical framework of high-temperature photochemical processes (Section 2) and development of experimental techniques for their study (Section 3). Basic thermal/photolytic studies have addressed the effect of temperature on the photochemical destruction of pure compounds (Section 4). Detailed studies of the destruction of reaction by-products have been conducted on selected waste molecules (Section 5). Some very limited results are available on the destruction of mixtures (Section 6). Fundamental spectroscopic studies have been recently initiated (Section 7). The results to date have been used to conduct some relatively simple scale-up studies of the solar detoxification process. More recent work has focused on destruction of compounds that do not directly absorb solar radiation. Research efforts have focused on homogeneous as well as heterogeneous methods of initiating destructive reaction pathways (Section 9). Although many conclusions at this point must be considered tentative due to lack of basic research, a clearer picture of the overall process is emerging (Section 10). However, much research remains to be performed and most follow several veins, including photochemical, spectroscopic, combustion kinetic, and engineering scale-up (Section 11).

Dellinger, B.; Graham, J.L.; Berman, J.M.; Taylor, P.H. [Dayton Univ., OH (United States)

1994-05-01T23:59:59.000Z

208

Thermal Conductivity Enhancement of High Temperature Phase Change Materials for Concentrating Solar Power Plant Applications  

E-Print Network [OSTI]

3 Fig. 1.2. Solar power plant operation [Materials for Concentrating Solar Power Plant Applications AMaterials for Concentrating Solar Power Plant Applications

Roshandell, Melina

2013-01-01T23:59:59.000Z

209

Improved high temperature solar absorbers for use in Concentrating Solar Power central receiver applications.  

SciTech Connect (OSTI)

Concentrating solar power (CSP) systems use solar absorbers to convert the heat from sunlight to electric power. Increased operating temperatures are necessary to lower the cost of solar-generated electricity by improving efficiencies and reducing thermal energy storage costs. Durable new materials are needed to cope with operating temperatures >600 C. The current coating technology (Pyromark High Temperature paint) has a solar absorptance in excess of 0.95 but a thermal emittance greater than 0.8, which results in large thermal losses at high temperatures. In addition, because solar receivers operate in air, these coatings have long term stability issues that add to the operating costs of CSP facilities. Ideal absorbers must have high solar absorptance (>0.95) and low thermal emittance (<0.05) in the IR region, be stable in air, and be low-cost and readily manufacturable. We propose to utilize solution-based synthesis techniques to prepare intrinsic absorbers for use in central receiver applications.

Stechel, Ellen Beth; Ambrosini, Andrea; Hall, Aaron Christopher; Lambert, Timothy L.; Staiger, Chad Lynn; Bencomo, Marlene

2010-09-01T23:59:59.000Z

210

On-grid PV implementation program. Phase I report, August 1994--January 1995  

SciTech Connect (OSTI)

Southern California Edison Company (Edison) is finalizing a Cooperative Agreement with the U.S. Department of Energy (DOE) to develop high value On-Grid applications for electricity from Photovoltaics (PV). Edison`s efforts are the result of Edison`s long-standing commitment to the pursuit of Renewable Energy. Edison has been a world leader in the development and use of PV. As the technology becomes more commercial, Edison has been actively seeking more applications for PV. After strenuous effort, Edison has now received approval to offer off-grid PV packages within its service territory. In addition, Edison has been very interested in finding high-value on-grid PV applications that may have the potential to become cost effective as PV applications increase and prices decline. Such high-value applications at Edison and other utilities will accelerate the price reductions, which in turn will increase the number of cost-effective applications, driving towards a market competitive with traditional sources of energy. Edison`s efforts build upon the work done by Pacific Gas & Electric (PG&E) at their Kerman substation, but goes much further than that effort. Edison submitted its original proposal to the DOE on June 30, 1993. A revised proposal was submitted on February 1, 1994, in response to a letter from the DOE`s Director of Solar Energy, Robert H. Annan. In a letter dated March 30, 1994, from Paul K. Kearns, Head of Contracting Activity for the DOE`s Golden Field Office, the DOE conditionally approved certain pre-award contract costs. The Cooperative Agreement with DOE was executed on August 16, 1994.

NONE

1994-11-29T23:59:59.000Z

211

Rooftop PV system. PV:BONUS Phase 3B, final technical report  

SciTech Connect (OSTI)

Under the PV:BONUS Program, ECD and United Solar developed, demonstrated and commercialized two new lightweight, flexible BIPV modules specifically designed as replacements for conventional asphalt shingles and standing seam metal roofing. These modules can be economically and aesthetically integrated into new residential and commercial buildings, and can be used to address the even larger roofing-replacement market. An important design feature of these modules, which minimizes the installation and balance-of-system costs, is their ability to be installed by conventional roofing contractors without special training. The modules are fabricated from high-efficiency, triple-junction spectrum-splitting a-Si alloy solar cells developed by ECD and United Solar. These cells are produced on thin, flexible stainless steel substrates and encapsulated with polymer materials. The Phase 3 program began in August 1995. The principal tasks and goals of this program, which have all been successfully completed by ECD and United Solar, are described in the body and appendices of this report.

NONE

1998-11-01T23:59:59.000Z

212

Development of a dispatchable PV peak shaving system. Final report on PV:BONUS Phase 2 activities  

SciTech Connect (OSTI)

In July 1993, the Delmarva Power and Light Company (now Conectiv, Inc.) was awarded a contract for the development of a Dispatchable Photovoltaic Peak Shaving System under the US Department of Energy PV:BONUS Program. The rationale for the dispatchable PV peak shaving system is based on the coincidence between the solar resource and the electrical load in question. Where poor coincidence exists, a PV array by itself does little to offset peak demands. However, with the addition of a relatively small amount of energy storage, the energy from the PV array can be managed and the value of the PV system increases substantially. In Phase 2, Delmarva Power continued the refinement of the system deployed in Phase 1. Four additional dispatchable PV peak shaving systems were installed for extended testing and evaluation at sites in Delaware, Maryland, Wisconsin and North Carolina. A second type of system that can be used to provide back-up power as well as peak shaving was also developed in Phase 2. This PV-UPS system used a packaging approach nearly identical to the PV peak shaving system, although there were significant differences in the design of the power electronics and control systems. Conceptually, the PV-UPS system builds upon the idea of adding value to PV systems by increasing functionality. A prototype of the PV-UPS system was installed in Delaware for evaluation near the end of the contract period.

Ferguson, W.D. [Conectiv, Inc., Wilmington, DE (United States); Nigro, R.M. [Applied Energy Group, Inc., Hauppauge, NY (United States)

1999-01-20T23:59:59.000Z

213

NanoPV Corporation | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 -Energieprojekte3Informationof Energy Calculator29NanoPV Corporation Jump to:

214

Sandia National Laboratories: new PV technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbine bladelifetime ismobile testnational electricitynew PV technology

215

PV World Co Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoading map...(UtilityCounty,Orleans County,PPP Equipment CorporationPV World Co Ltd Place:

216

PV Manufacturing R&D Project -- Trends in the U.S. PV Industry  

SciTech Connect (OSTI)

To foster continued growth in the U.S. photovoltaic (PV) industry, the U.S. Department of Energy initiated the PV Manufacturing R&D (PVMR&D) Project--a partnership with U.S. PV industry participants to perform cost-shared manufacturing research and development. Throughout FY 2004, PVMR&D managed fourteen subcontracts across the industry. The impact of PVMR&D is quantified by reductions in direct module manufacturing costs, scale-up of existing PV production capacity, and accrual of cost savings to the public and industry. An analysis of public and industry investment shows that both recaptured funds by mid-1998 based on estimated manufacturing cost savings from PVMR&D participation. Since project inception, total PV manufacturing capacity has increased from 14 MW to 201 MW at the close of 2003, while direct manufacturing costs declined from $5.55/W to $2.49/W. These results demonstrate continued progress toward the overriding goals of the PVMR&D project.

Brown, K. E.; Mitchell, R. L.; Bower, W. I.; King, R.

2005-01-01T23:59:59.000Z

217

Design and Analysis of a High-Efficiency, Cost-Effective Solar Concentrator John H. Reif  

E-Print Network [OSTI]

that concentrate solar energy for conversion into usable energy. Ideally, a solar concentrating system should have, wind and sand loading, and abrasion. Many arid and desert areas, best suited for solar energy advantages of our solar concentrating system: are low cost and durability. Unlike most prior solar

Reif, John H.

218

Tri-Lateral Noor al Salaam High Concentration Solar Central Receiver Program  

SciTech Connect (OSTI)

This report documents the efforts conducted primarily under the Noor al Salaam (ďLight of PeaceĒ) program under DOE GRANT NUMBER DE-FC36-02GO12030, together with relevant technical results from a closely related technology development effort, the U.S./Israel Science and Technology Foundation (USISTF) High Concentration Solar Central Receiver program. These efforts involved preliminary design, development, and test of selected prototype power production subsystems and documentation of an initial version of the system definition for a high concentration solar hybrid/gas electrical power plant to be built in Zaafarana, Egypt as a first step in planned commercialization. A major part of the planned work was halted in 2007 with an amendment in October 2007 requiring that we complete the technical effort by December 31, 2007 and provide a final report to DOE within the following 90 days. This document summarizes the work conducted. The USISTF program was a 50/50 cost-shared program supported by the Department of Commerce through the U.S./Israel Science and Technology Commission (USISTC). The USISTC was cooperatively developed by President Clinton and the late Prime Minister Rabin of Israel "to encourage technological collaboration" and "support peace in the Middle East through economic development". The program was conducted as a follow-on effort to Israel's Magnet/CONSOLAR Program, which was an advanced development effort to design, fabricate, and test a solar central receiver and secondary optics for a "beam down" central receiver concept. The status of these hardware development programs is reviewed, since they form the basis for the Noor al Salaam program. Descriptions are provided of the integrated system and the major subsystems, including the heliostat, the high temperature air receiver, the power conversion unit, tower and tower reflector, compound parabolic concentrator, and the master control system. One objective of the USISTF program was to conduct marketing research, identify opportunities for use of this technology, and to the extent possible, secure an agreement leading to a pre-commercialization demonstration or prototype plant. This was accomplished with the agreement to conduct the Noor al Salaam program as a tri-lateral project between Egypt, Israel, and the U.S. The tri-lateral project was led by the University of Alabama in Huntsville (UAH); this included the Egyptian New and Renewable Energy Authority and the Israeli USISTC participants. This project, known was Noor al Salaam, was funded by the U.S. Agency for International Development (USAID) through the Department of Energy (DOE). The Egyptian activity was under the auspices of the Egyptian Ministry of Energy and Electricity, New and Renewable Energy Authority (NREA) as part of Egypt's plans for renewable energy development. The objective of the Noor al Salaam project was to develop the conditions necessary to obtain funding and construct and operate an approximately 10 to 20 Megawatt hybrid solar/natural gas demonstration power plant in Zaafarana, Egypt that could serve both as a test bed for advanced solar technology evaluations, and as a forerunner to commercial plant designs. This plant, termed Noor Al Salaam, or ďLight of PeaceĒ, reached the initial phase of system definition before being curtailed, in part by changes in USAID objectives, coupled with various delays that were beyond the scope of the program to resolve. The background of the USISTF technology development and pre-commercialization effort is provided in this report, together with documentation of the technology developments conducted under the Noor al Salaam program. It should be noted that only a relatively small part of the Noor al Salaam funding was expended over the approximately five years for which UAH was prime contractor before the program was ordered closed (Reference 1) so that the remaining funds could be returned to USAID.

Blackmon, James B

2008-03-31T23:59:59.000Z

219

Batteries put to test in PV plan The technology could help utilities absorb  

E-Print Network [OSTI]

of solar power produced by rooftop photovoltaic panels. The project, in a neighborhood with one when output from PV panels drops, and absorbing power when the solar power spikes. The battery systems@STARADVERTISER.COM Neighborhoods with high penetration of photovoltaic panels, like this one in Hawaii Kai, are creating challenges

220

Energizing the Next Generation with Photovoltaics Following the lead of Russian colleagues, photovoltaic (PV)  

E-Print Network [OSTI]

Energizing the Next Generation with Photovoltaics ABSTRACT Following the lead of Russian colleagues, photovoltaic (PV) lab kits are being built and experiments and curricula are being developed for use of these kits. This Photovoltaic Sci- ence Experiments and Curriculum (PSEC) is being tested in local high

Oregon, University of

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Redesign of Electrical Installations to Maximize the Use of Photo Voltaic (PV) Cells at the End Use of Consumers in Kuwait  

E-Print Network [OSTI]

) Photovoltaic PV 2010 1900 2 20 Photovoltaic PV2020 900 2 20 Table 2 gives the current price of Photovoltaic for Crystalline Silicon and Thin Films/Concentrators, while the price will be much reduced in the year 2020 as a result of using Thin Films... system was to meet a maximum demand load of 9710 MW in the year 2008, then the cost of one KW load was 19 475 /9710= 2005 US$/KW. By comparing this cost with the expected PV Photovoltaic in 2010 -given in Table 2 ? it is seems that the conventional...

Alatrash, J.; Mhaisen, N.; Ismail, Z.

2010-01-01T23:59:59.000Z

222

Real Power and Reactive Power Control of a Three-Phase Single-Stage-PV System and PV voltage Stability  

SciTech Connect (OSTI)

Grid-connected photovoltaic (PV) systems with power electronic interfaces can provide both real and reactive power to meet power system needs with appropriate control algorithms. This paper presents the control algorithm design for a three-phase single-stage grid-connected PV inverter to achieve either maximum power point tracking (MPPT) or a certain amount of real power injection, as well as the voltage/var control. The switching between MPPT control mode and a certain amount of real power control mode is automatic and seamless. Without the DC-to-DC booster stage, PV DC voltage stability is an important issue in the control design especially when the PV inverter is operating at maximum power point (MPP) with voltage/var control. The PV DC voltage collapse phenomenon and its reason are discussed. The method based on dynamic correction of the PV inverter output is proposed to ensure PV DC voltage stability. Simulation results of the single-stage PV system during system disturbances and fast solar irradiation changes confirm that the proposed control algorithm for single-stage PV inverters can provide appropriate real and reactive power services and ensure PV DC voltage stability during dynamic system operation and atmospheric conditions.

Li, Huijuan [ORNL] [ORNL; Xu, Yan [ORNL] [ORNL; Adhikari, Sarina [ORNL] [ORNL; Rizy, D Tom [ORNL] [ORNL; Li, Fangxing [ORNL] [ORNL; Irminger, Philip [ORNL] [ORNL

2012-01-01T23:59:59.000Z

223

E-Print Network 3.0 - accumulate high concentrations Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

( ) Characteristics of S. nigrum accumulating Cd. Usually, when the concentration of a heavy metal in soils... will not decrease significantly even though the ... Source: Ma, Lena...

224

Thermal Conductivity Enhancement of High Temperature Phase Change Materials for Concentrating Solar Power Plant Applications  

E-Print Network [OSTI]

materials (PCM) in solar thermal concentrating technologyeffective and efficient solar thermal electricity generatorbeen considered for solar thermal energy storages. These are

Roshandell, Melina

2013-01-01T23:59:59.000Z

225

INTERNATIONAL STUDIES OF ENHANCED WASTE LOADING AND IMPROVED MELT RATE FOR HIGH ALUMINA CONCENTRATION NUCLEAR WASTE GLASSES  

SciTech Connect (OSTI)

The goal of this study was to determine the impacts of glass compositions with high aluminum concentrations on melter performance, crystallization and chemical durability for Savannah River Site (SRS) and Hanford waste streams. Glass compositions for Hanford targeted both high aluminum concentrations in waste sludge and a high waste loading in the glass. Compositions for SRS targeted Sludge Batch 5, the next sludge batch to be processed in the Defense Waste Processing Facility (DWPF), which also has a relatively high aluminum concentration. Three frits were selected for combination with the SRS waste to evaluate their impact on melt rate. The glasses were melted in two small-scale test melters at the V. G. Khlopin Radium Institute. The results showed varying degrees of spinel formation in each of the glasses. Some improvements in melt rate were made by tailoring the frit composition for the SRS feeds. All of the Hanford and SRS compositions had acceptable chemical durability.

Fox, K; David Peeler, D; James Marra, J

2008-09-11T23:59:59.000Z

226

1 In situ Ramanbased measurements of high dissolved methane 2 concentrations in hydraterich ocean sediments  

E-Print Network [OSTI]

sediments 3 Xin Zhang,1,2 Keith C. Hester,1,3 William Ussler,1 Peter M. Walz,1 Edward T. Peltzer,1 4 XX Month 2011. 6 [1] Ocean sediment dissolved CH4 concentrations are of 7 interest for possible dissolved 28 methane concentrations in hydraterich ocean sediments, Geophys. 29 Res. Lett., 38, LXXXXX, doi

Tian, Weidong

227

Tucson's Solar Experience: Developing PV with RFPs and PPAs  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Tucson's Solar Experience: Developing PV with RFPs and PPAs Bruce Plenk Solar Coordinator City of Tucson Office of Conservation and Sustainable Development DOE EERE- January 15,...

228

Novel Control and Harmonics Impact of PV Solar Farms.  

E-Print Network [OSTI]

??This thesis presents a novel application of Photovoltaic (PV) solar system inverter, both during night and day, as a dynamic reactive power compensator STATCOM. ThisÖ (more)

Das, Byomakesh

2012-01-01T23:59:59.000Z

229

Large-scale Solar PV Investment Planning Studies.  

E-Print Network [OSTI]

??In the pursuit of a cleaner and sustainable environment, solar photovoltaic (PV) power has been established as the fastest growing alternative energy source in theÖ (more)

Muneer, Wajid

2011-01-01T23:59:59.000Z

230

Study on PID Resistance of HIT PV Modules  

Broader source: Energy.gov (indexed) [DOE]

2013 Photovoltaic Module Reliability Workshop NREL, Golden, CO February 26-27, 2013 Study on PID resistance of HIT PV modules Tasuku Ishiguro 1 , Hiroshi Kanno 1 , Mikio...

231

Pallets of PV: Communities Purchase Solar and Drive Down Costs...  

Open Energy Info (EERE)

A Community Guide to Collective Purchasing of Residential PV Systems." Northwest Sustainable Energy for Economic Development (Northwest SEED), May. Groups: OpenEI Community...

232

Sandia National Laboratories: Sandian Presents on PV Failure...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Analysis at European PV Solar Energy Conference and Exhibition (EU PVSC) On December 15, 2014, in Computational Modeling & Simulation, Energy, Facilities, News, News & Events,...

233

Overview of the PV Module Model in PVWatts (Presentation)  

SciTech Connect (OSTI)

Overview of the PV module model. PVWatts module power estimates were compared with those using the Sandia model for three modules and data sets.

Marion, B.

2010-09-22T23:59:59.000Z

234

Weathering Performance of PV Backsheets | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

2013, Golden, Colorado pvmrw13ps5arkemalefebvre.pdf More Documents & Publications Accelerated Laboratory Tests Using Simultaneous UV, Temperature, and Moisture for PV...

235

Integrating Solar PV in Utility System Operations  

SciTech Connect (OSTI)

This study develops a systematic framework for estimating the increase in operating costs due to uncertainty and variability in renewable resources, uses the framework to quantify the integration costs associated with sub-hourly solar power variability and uncertainty, and shows how changes in system operations may affect these costs. Toward this end, we present a statistical method for estimating the required balancing reserves to maintain system reliability along with a model for commitment and dispatch of the portfolio of thermal and renewable resources at different stages of system operations. We estimate the costs of sub-hourly solar variability, short-term forecast errors, and day-ahead (DA) forecast errors as the difference in production costs between a case with ďrealisticĒ PV (i.e., subhourly solar variability and uncertainty are fully included in the modeling) and a case with ďwell behavedĒ PV (i.e., PV is assumed to have no sub-hourly variability and can be perfectly forecasted). In addition, we highlight current practices that allow utilities to compensate for the issues encountered at the sub-hourly time frame with increased levels of PV penetration. In this analysis we use the analytical framework to simulate utility operations with increasing deployment of PV in a case study of Arizona Public Service Company (APS), a utility in the southwestern United States. In our analysis, we focus on three processes that are important in understanding the management of PV variability and uncertainty in power system operations. First, we represent the decisions made the day before the operating day through a DA commitment model that relies on imperfect DA forecasts of load and wind as well as PV generation. Second, we represent the decisions made by schedulers in the operating day through hour-ahead (HA) scheduling. Peaking units can be committed or decommitted in the HA schedules and online units can be redispatched using forecasts that are improved relative to DA forecasts, but still imperfect. Finally, we represent decisions within the operating hour by schedulers and transmission system operators as real-time (RT) balancing. We simulate the DA and HA scheduling processes with a detailed unit-commitment (UC) and economic dispatch (ED) optimization model. This model creates a least-cost dispatch and commitment plan for the conventional generating units using forecasts and reserve requirements as inputs. We consider only the generation units and load of the utility in this analysis; we do not consider opportunities to trade power with neighboring utilities. We also do not consider provision of reserves from renewables or from demand-side options. We estimate dynamic reserve requirements in order to meet reliability requirements in the RT operations, considering the uncertainty and variability in load, solar PV, and wind resources. Balancing reserve requirements are based on the 2.5th and 97.5th percentile of 1-min deviations from the HA schedule in a previous year. We then simulate RT deployment of balancing reserves using a separate minute-by-minute simulation of deviations from the HA schedules in the operating year. In the simulations we assume that balancing reserves can be fully deployed in 10 min. The minute-by-minute deviations account for HA forecasting errors and the actual variability of the load, wind, and solar generation. Using these minute-by-minute deviations and deployment of balancing reserves, we evaluate the impact of PV on system reliability through the calculation of the standard reliability metric called Control Performance Standard 2 (CPS2). Broadly speaking, the CPS2 score measures the percentage of 10-min periods in which a balancing area is able to balance supply and demand within a specific threshold. Compliance with the North American Electric Reliability Corporation (NERC) reliability standards requires that the CPS2 score must exceed 90% (i.e., the balancing area must maintain adequate balance for 90% of the 10-min periods). The combination of representing DA forecast errors in the

Mills, A.; Botterud, A.; Wu, J.; Zhou, Z.; Hodge, B-M.; Heany, M.

2013-10-31T23:59:59.000Z

236

The Open PV Project | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende NewSowitec do Brasil EnergiaSurPV Project (Redirected from

237

The Open PV Project | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende NewSowitec do Brasil EnergiaSurPV Project (Redirected from

238

Sandia National Laboratories: flexible PV substrate  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia,evaluating wind-turbine/radar impacts SandiafasterpolymersPV

239

Sandia National Laboratories: increase PV deployment  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbine blade manufacturing the viability offuel efficiencyPV

240

Sandia National Laboratories: intrgrate PV into tents  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbine blade manufacturing therenewables Sandia,internalintrgrate PV

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Gansu PV Co Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpen EnergyBoard" form. To create aGAInformationPV Co Ltd

242

Generation PV Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpen EnergyBoard" form. To createResearchEnergy Inc Jump to:PV

243

Sandia National Laboratories: PV Modeling & Analysis  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLong RangePILSResourcesPV ContactsAnalysis

244

Sandia National Laboratories: PV Performance Modeling Collaborative  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLongAnalysisPV Performance Modeling

245

Sandia National Laboratories: PV Performance Modeling Collaborative  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLongAnalysisPV Performance

246

Sandia National Laboratories: PV Program Disclaimer  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLongAnalysisPV

247

Sandia National Laboratories: PV Regional Test Center  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLongAnalysisPVPublications PV

248

Sandia National Laboratories: PV Systems Reliability  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems Reliability Sandia recognizes

249

Sandia National Laboratories: PV Systems Reliability  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems Reliability Sandia

250

Sandia National Laboratories: PV Tech Power  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems Reliability SandiaTech Power

251

Sandia National Laboratories: PV Value Tool  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems Reliability SandiaTechValue

252

Sandia National Laboratories: PV Value¬ģ  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems Reliability

253

Sandia National Laboratories: PV array monitoring strategies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems ReliabilityWorkshops

254

Sandia National Laboratories: PV module development  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systemsconcentratorsmodule

255

Sandia National Laboratories: PV performance model validation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV

256

Sandia National Laboratories: PV plant performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV

257

Sandia National Laboratories: PV power plant monitoring  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV

258

Sandia National Laboratories: PV system monitoring  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PVracks HelioVolt Modulesmonitoring PV

259

Sandia National Laboratories: PV-Tech magazine  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PVracks HelioVoltPV-Tech magazine

260

Sandia National Laboratories: accelerating PV technology integration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia, NREL Release Wave EnergyLinksZ Newsaccelerating PV technology

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Development of a Dispatchable PV Peak Shainv System. PV: Bonus Program - Phase 1 Report. Volume 1  

SciTech Connect (OSTI)

This report summarizes the work performed by Delmarva Power and Light and its subcontractors in Phase 1 of the US Department of Energy's PV:BONUS Program. The purpose of the program is to develop products and systems for buildings which utilize photovoltaic (N) technology. Beginning with a cooperative research effort with the University of Delaware's Center for Energy and Environmental Policy Research Delmarva Power developed and demonstrated the concept of Dispatchable PV Peak Shaving. This concept and the system which resulted horn the development work are unique from other grid-connected PV systems because it combines a PV, battery energy storage, power conversion and control technologies into an integrated package. Phase 1 began in July 1993 with the installation of a test and demonstration system at Delmarva's Northern Division General Office building near Newark, Delaware. Following initial testing throughout the summer and fall of 1993, significant modifications were made under an amendment to the DOE contract. Work on Phase 1 concluded in the early spring of 1995. Significant progress towards the goal of commercializing the system was made during Phase 1, and is summarized. Based on progress in Phase 1, a proposal to continue the work in Phase 2 was submitted to the US DOE in May 1995. A contract amendment and providing funds for the Phase 2 work is expected in July 1995.

None

1995-10-01T23:59:59.000Z

262

AC PV Modules Take a standard DC PV module and connect a microinverter  

E-Print Network [OSTI]

modules. These inverters range in power from 700 watts up to 1 megawatt. DC maximum system voltages can and up to 13 inverters for the 210 W version to be installed on the same AC output cable. home power 136, and secure a listing to UL1741 for a pre-assembled module/inverter device, and you have an AC PV module

Johnson, Eric E.

263

Potential Role of Concentrating Solar Power in Enabling High Renewables Scenarios in the United States  

SciTech Connect (OSTI)

This work describes the analysis of concentrating solar power (CSP) in two studies -- The SunShot Vision Study and the Renewable Electricity Futures Study -- and the potential role of CSP in a future energy mix.

Denholm, P.; Hand, M.; Mai, T.; Margolis, R.; Brinkman, G.; Drury, E.; Mowers, M.; Turchi, C.

2012-10-01T23:59:59.000Z

264

Sacramento Municipal Utility District PV and Smart Grid Pilot at Anatolia  

SciTech Connect (OSTI)

Under DE-FOA-0000085 High Penetration Solar Deployment, the U. S. Department of Energy funded agreements with SMUD and Navigant Consulting, SunPower, GridPoint, the National Renewable Energy Laboratory, and the California Energy Commission for this pilot demonstration project. Funding was $5,962,409.00. Cost share of $500,000 was also provided by the California Energy Commission. The project has strategic implications for SMUD, other utilities and the PV and energy-storage industries in business and resource planning, technology deployment and asset management. These implications include: -At this point, no dominant business models have emerged and the industry is open for new ideas. -Demonstrated two business models for using distributed PV and energy storage, and brainstormed several dozen more, each with different pros and cons for SMUD, its customers and the industry. -Energy storage can be used to manage high penetrations of PV and mitigate potential issues such as reverse power flow, voltage control violations, power quality issues, increased wear and tear on utility equipment, and system wide power supply issues. - Smart meters are another tool utilities can use to manage high penetrations of PV. The necessary equipment and protocols exist, and the next step is to determine how to integrate the functionality with utility programs and what level of utility control is required. - Time-of-use rates for the residential customers who hosted energy storage systems did not cause a significant change in energy usage patterns. However, the rates we used were not optimized for PV and energy storage. Opportunities exist for utilities to develop new structures.

Rawson, Mark; Sanchez, Eddie Paul

2013-12-30T23:59:59.000Z

265

Grid tied PV system energy smoothing.  

SciTech Connect (OSTI)

Grid-tied PV energy smoothing was implemented by using a valve regulated lead-acid (VRLA) battery as a temporary energy storage device to both charge and discharge as required to smooth the inverter energy output from the PV array. Inverter output was controlled by the average solar irradiance over the previous 1h time interval. On a clear day the solar irradiance power curve is offset by about 1h, while on a variable cloudy day the inverter output power curve will be smoothed based on the average solar irradiance. Test results demonstrate that this smoothing algorithm works very well. Battery state of charge was more difficult to manage because of the variable system inefficiencies. Testing continued for 30-days and established consistent operational performance for extended periods of time under a wide variety of resource conditions. Both battery technologies from Exide (Absolyte) and East Penn (Advanced Valve Regulated Lead-Acid) proved to cycle well at a partial state of charge over the time interval tested.

Barrett, Keith Phillip; Gonzalez, Sigifredo; Hund, Thomas D.

2010-06-01T23:59:59.000Z

266

Grid-tied PV battery systems.  

SciTech Connect (OSTI)

Grid tied PV energy smoothing was implemented by using a valve regulated lead-acid (VRLA) battery as a temporary energy storage device to both charge and discharge as required to smooth the inverter energy output from the PV array. Inverter output was controlled by the average solar irradiance over the previous 1h time interval. On a clear day the solar irradiance power curve is offset by about 1h, while on a variable cloudy day the inverter output power curve will be smoothed based on the average solar irradiance. Test results demonstrate that this smoothing algorithm works very well. Battery state of charge was more difficult to manage because of the variable system inefficiencies. Testing continued for 30-days and established consistent operational performance for extended periods of time under a wide variety of resource conditions. Both battery technologies from Exide (Absolyte) and East Penn (ALABC Advanced) proved to cycle well at a Partial state of charge over the time interval tested.

Barrett, Keith Phillip; Gonzalez, Sigifredo; Hund, Thomas D.

2010-09-01T23:59:59.000Z

267

Step-Stress Accelerated Degradation Testing (SSADT) for Photovoltaic (PV) Devices and Cells (Presentation)  

SciTech Connect (OSTI)

Presentation on step-stress accelerated degradation testing (SSADT) for photovoltaics (PV). Developed are a step-stress degradation test (SSADT) for PV reliability tests and a lifetime prediction model for PV products.

Lee, J.; Elmore, R.; Suh, C.; Jones, W.

2010-10-01T23:59:59.000Z

268

PID-free C-Si PV Module Using Novel Chemically-Tempered Glass...  

Broader source: Energy.gov (indexed) [DOE]

PID-free C-Si PV Module Using Novel Chemically-Tempered Glass PID-free C-Si PV Module Using Novel Chemically-Tempered Glass Presented at the PV Module Reliability Workshop,...

269

Comparison Between TRNSYS Software Simulation and PV F-Chart Program on Photovoltaic System  

E-Print Network [OSTI]

This report covers the comparisons of Photovoltaic System by TRNSYS simulation and PV F-Chart program to test TRNSYS simulation accuracy. The report starts with the Photovoltaic (PV) (PV) System introduction in Section one which is followed...

Haberl, J. S.; Baltazar, J. C.; Mao, C.

2012-01-01T23:59:59.000Z

270

Thermal Conductivity Enhancement of High Temperature Phase Change Materials for Concentrating Solar Power Plant Applications  

E-Print Network [OSTI]

that can operate with Stirling engines at 42% efficiency andfor high temperature Stirling engines which operates at 42%turbines such as Stirling engines, while high-temperature (>

Roshandell, Melina

2013-01-01T23:59:59.000Z

271

Engineering the optical properties of luminescent solar concentrators at the molecular scale  

E-Print Network [OSTI]

Luminescent Solar Concentrators (LSCs) concentrate solar radiation onto photovoltaic (PV) cells using an inexpensive collector plate to absorb incoming photons and waveguide fluorescently re-emitted photons to PVs at the ...

Mulder, Carlijn Lucinde

2012-01-01T23:59:59.000Z

272

Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term  

E-Print Network [OSTI]

Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term Projections November 2012 #12;Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term Projections David Feldman1 , Galen Barbose2 , Robert Margolis1 , Ryan Wiser2 , Na√Įm Darghouth2 , and Alan Goodrich1 1 National Renewable Energy

273

Integrating PV into Performance Contracts: Barriers and Trends  

E-Print Network [OSTI]

value chain includes the technology's value as a peak-shaving and load management tool, as a sourceIntegrating PV into Performance Contracts: Barriers and Trends Wilson Rickerson Center for Energy incorporated photovoltaic (PV) systems as part of an overall building energy service strategy. This paper

Delaware, University of

274

The Falling Price of Utility-Scale Solar Photovoltaic (PV) Projects...  

Office of Environmental Management (EM)

Solar Photovoltaic (PV) Projects The Falling Price of Utility-Scale Solar Photovoltaic (PV) Projects Data courtesy of National Renewable Energy Lab. Chart by Daniel Wood. View...

275

Linkage to Previous International PV Module QA Task Force Workshops; Proposal for Rating System (Presentation)  

SciTech Connect (OSTI)

This presentation gives the historical background of the creation of the International PV QA Task Force as an introduction to the PV Module Reliability Workshop.

Kurtz, S.; Wohlgemuth, J.; Sample, T.; Yamamichi, M.; Kondo, M.

2013-05-01T23:59:59.000Z

276

A Comparison of Key PV Backsheet and Module Properties from Fielded...  

Broader source: Energy.gov (indexed) [DOE]

of Key PV Backsheet and Module Properties from Fielded Module Exposures and Accelerated Test Conditions A Comparison of Key PV Backsheet and Module Properties from Fielded...

277

A Wavelet-Based Variability Model (WVM) for Solar PV Power Plants  

E-Print Network [OSTI]

Model (WVM) for Solar PV Power Plants Matthew Lave, Jansolar photovoltaic (PV) power plant output given a singleproduce a simulated power plant output. The WVM is validated

Lave, Matthew; Kleissl, Jan; Stein, Joshua S

2013-01-01T23:59:59.000Z

278

Genome sequence and rapid evolution of the rice pathogen Xanthomonas oryzae pv. oryzae PXO99A.  

E-Print Network [OSTI]

pathovar; pv. ), which demonstrate distinct host plantcampestris pv. malvacearum avr genes. Mol Plant Microbepv. vesicatoria, which is responsible for bacterial spot in tomato and pepper plants.

2008-01-01T23:59:59.000Z

279

1 INTRODUCTION Groundwater with a high F concentration is encountered in many places around the world and  

E-Print Network [OSTI]

1 INTRODUCTION Groundwater with a high F concentration is encountered in many places around composition of groundwater under paddy fields in the Maheshwaram watershed and supported by chemical modeling watershed, where groundwater is intensively abstracted for paddy irrigation. A reactive1-D geochemical model

Paris-Sud XI, Université de

280

Lessons Learned from the Photovoltaic Manufacturing Technology/PV Manufacturing R&D and Thin Film PV Partnership Projects  

SciTech Connect (OSTI)

As the U.S. Department of Energy's (DOE's) Solar Energy Technologies Program initiates new cost-shared solar energy R&D under the Solar America Initiative (SAI), it is useful to analyze the experience gained from cost-shared R&D projects that have been funded through the program to date. This report summarizes lessons learned from two DOE-sponsored photovoltaic (PV) projects: the Photovoltaic Manufacturing Technology/PV Manufacturing R&D (PVMaT/PVMR&D) project and the Thin-Film PV Partnership project. During the past 10-15 years, these two projects have invested roughly $330 million of government resources in cost-shared R&D and leveraged another $190 million in private-sector PV R&D investments. Following a description of key findings and brief descriptions of the PVMaT/PVMR&D and Thin-Film PV Partnership projects, this report presents lessons learned from the projects.

Margolis, R.; Mitchell, R.; Zweibel, K.

2006-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Electrochemical Approaches to PV Busbar Application  

SciTech Connect (OSTI)

Busbars are an integral component of any thin-film photovoltaic module and must be easy and quick to apply by PV manufacturers, as well as provide long-term reliability in deployed modules. Potential reliability issues include loss of adhesion and delamination, chemical instability under current collection conditions (electromigration or corrosion), compatibility of material and application method with subsequent encapsulation steps. Several new and novel busbar materials and application methods have been explored, including adhering metal busbars with various one- and two-part conductive epoxies or conductive adhesive films, ultrasonic bonding of metal busbar strips, and bonding of busbar strips using low-temperature solders. The most promising approach to date has been the direct application of metal busbars via various electrochemical techniques, which offers a variety of distinct advantages.

Pankow, J. W.

2005-01-01T23:59:59.000Z

282

Innovations in Wind and Solar PV Financing  

SciTech Connect (OSTI)

There is growing national interest in renewable energy development based on the economic, environmental, and security benefits that these resources provide. Historically, greater development of our domestic renewable energy resources has faced a number of hurdles, primarily related to cost, regulation, and financing. With the recent sustained increase in the costs and associated volatility of fossil fuels, the economics of renewable energy technologies have become increasingly attractive to investors, both large and small. As a result, new entrants are investing in renewable energy and new business models are emerging. This study surveys some of the current issues related to wind and solar photovoltaic (PV) energy project financing in the electric power industry, and identifies both barriers to and opportunities for increased investment.

Cory, K.; Coughlin, J.; Jenkin, T.; Pater, J.; Swezey, B.

2008-02-01T23:59:59.000Z

283

Analytical Improvements in PV Degradation Rate Determination  

SciTech Connect (OSTI)

As photovoltaic (PV) penetration of the power grid increases, it becomes vital to know how decreased power output may affect cost over time. In order to predict power delivery, the decline or degradation rates must be determined accurately. For non-spectrally corrected data several complete seasonal cycles (typically 3-5 years) are required to obtain reasonably accurate degradation rates. In a rapidly evolving industry such a time span is often unacceptable and the need exists to determine degradation rates accurately in a shorter period of time. Occurrence of outliers and data shifts are two examples of analytical problems leading to greater uncertainty and therefore to longer observation times. In this paper we compare three methodologies of data analysis for robustness in the presence of outliers, data shifts and shorter measurement time periods.

Jordan, D. C.; Kurtz, S. R.

2011-02-01T23:59:59.000Z

284

High-Flux Stress Testing of Encapsulants for Medium-Concentration CPV Applications  

SciTech Connect (OSTI)

This study involved developing methods to expose transparent encapsulant materials to high (40 to 45 UV suns) optical fluxes of UV radiation to enable rapid evaluation of materials.

Kempe, M. D.; Kilkenny, M.; Moricone, T. J.; Zhang, J. Z.

2009-09-01T23:59:59.000Z

285

Optimal Solar PV Arrays Integration for Distributed Generation  

SciTech Connect (OSTI)

Solar photovoltaic (PV) systems hold great potential for distributed energy generation by installing PV panels on rooftops of residential and commercial buildings. Yet challenges arise along with the variability and non-dispatchability of the PV systems that affect the stability of the grid and the economics of the PV system. This paper investigates the integration of PV arrays for distributed generation applications by identifying a combination of buildings that will maximize solar energy output and minimize system variability. Particularly, we propose mean-variance optimization models to choose suitable rooftops for PV integration based on Markowitz mean-variance portfolio selection model. We further introduce quantity and cardinality constraints to result in a mixed integer quadratic programming problem. Case studies based on real data are presented. An efficient frontier is obtained for sample data that allows decision makers to choose a desired solar energy generation level with a comfortable variability tolerance level. Sensitivity analysis is conducted to show the tradeoffs between solar PV energy generation potential and variability.

Omitaomu, Olufemi A [ORNL; Li, Xueping [University of Tennessee, Knoxville (UTK)

2012-01-01T23:59:59.000Z

286

Kauai Island Utility Co-op (KIUC) PV integration study.  

SciTech Connect (OSTI)

This report investigates the effects that increased distributed photovoltaic (PV) generation would have on the Kauai Island Utility Co-op (KIUC) system operating requirements. The study focused on determining reserve requirements needed to mitigate the impact of PV variability on system frequency, and the impact on operating costs. Scenarios of 5-MW, 10-MW, and 15-MW nameplate capacity of PV generation plants distributed across the Kauai Island were considered in this study. The analysis required synthesis of the PV solar resource data and modeling of the KIUC system inertia. Based on the results, some findings and conclusions could be drawn, including that the selection of units identified as marginal resources that are used for load following will change; PV penetration will displace energy generated by existing conventional units, thus reducing overall fuel consumption; PV penetration at any deployment level is not likely to reduce system peak load; and increasing PV penetration has little effect on load-following reserves. The study was performed by EnerNex under contract from Sandia National Laboratories with cooperation from KIUC.

Ellis, Abraham; Mousseau, Tom (Knoxville, TN)

2011-08-01T23:59:59.000Z

287

The Aqueous Thermodynamics and Complexation Reactions of Anionic Silica and Uranium Species to High Concentration  

SciTech Connect (OSTI)

The objective of this research project is to develop the necessary thermodynamic data, including aqueous phase stability constants and Pitzer ion-interaction parameters, to predict the changes in the aqueous phase chemistry that occur when high ionic strength, highly basic tank wastes enter the vadose zone.

Choppin, Gregory R.

2004-12-01T23:59:59.000Z

288

PV Validation and Bankability Workshop: San Jose, California  

SciTech Connect (OSTI)

This report is a collaboration between Sandia National Laboratories, the National Renewable Energy Laboratory, and the Florida Solar Energy Center (FSEC). The report provides feedback from the U.S. Department of Energy's (DOE) Solar Program PV Validation and Bankability Workshop in San Jose, California on August 31, 2011. It focuses on the current state of PV in the United States, private funding to fund U.S. PV industry growth, roles and functions of the regional test center program, and ways to improve the current validation and bankability practices.

Granata, J.; Howard, J.

2011-12-01T23:59:59.000Z

289

ENERGY-10 PV: Photovoltaics, A New Capability (Preprint)  

SciTech Connect (OSTI)

This is one of two companion papers that describe the ENERGY-10 PV design-tool computer simulation program. The other paper is titled ''Hourly Simulation of Grid-Connected PV Systems Using Realistic Building Loads.'' While this paper focuses on the implementation method, the companion paper focuses on the PV aspects of the program. The case study in this paper is a residential building application, whereas the case study in the companion paper is a commercial application with an entirely different building load characteristic. Together, they provide a balanced view.

Balcomb, J.D.; Hayter, S.J. (National Renewable Energy Laboratory); Weaver, N.L. (InterWeaver Consulting)

2001-02-16T23:59:59.000Z

290

Thermal Conductivity Enhancement of High Temperature Phase Change Materials for Concentrating Solar Power Plant Applications  

E-Print Network [OSTI]

537įC) steam for the steam turbine to generate electricity.as heat sources for steam turbines. Mainly three approachesto Stirling or Brayton steam turbine, moderate to high heat

Roshandell, Melina

2013-01-01T23:59:59.000Z

291

Transmission System Performance Analysis for High-Penetration Photovoltaics  

SciTech Connect (OSTI)

This study is an assessment of the potential impact of high levels of penetration of photovoltaic (PV) generation on transmission systems. The effort used stability simulations of a transmission system with different levels of PV generation and load.

Achilles, S.; Schramm, S.; Bebic, J.

2008-02-01T23:59:59.000Z

292

backfed from utility-interactive PV inverters. This equation expresses this ratings requirement  

E-Print Network [OSTI]

-interactive photovoltaic (PV) system and the electrical utility grid is an area of importance to PV system designers and installers. Due to the varying sizes of PV systems and configurations of existing service-entrance equipment, these connections vary significantly among PV systems. Differences in Section 690.64 of the 2005 and 2008 editions

Johnson, Eric E.

293

NREL PV Projects - FUPWG Meeting: "Going Coastal for Energy Efficiency...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

kWdc (1,200,000 kWh) one-axis tracking PV system - Grid connected (NREL "side of the meter") - Milestones Agreements: January 2008 Operation: August 2008 Solar Rewards...

294

DOE-LPO-MiniReport_PV_v10  

Office of Environmental Management (EM)

for what has become a robust market that is now purely commercially financed. 4 energy.govlpo Utility-Scale PV Solar Markets Loan Programs O ce As deployment of...

295

Giant Leap Forward Toward Quality Assurance of PV Modules (Presentation)  

SciTech Connect (OSTI)

The presentation describes the composition of and motivation for the International PV QA Task Force, then describes the presentations and discussion that occurred at the workshop on Feb. 29th, 2012.

Kurtz, S.; Wohlgemuth, J.; Sample, T.; Yamamichi, M.

2012-03-01T23:59:59.000Z

296

Gainesville Regional Utilities- Solar-Electric (PV) System Rebate Program  

Broader source: Energy.gov [DOE]

'''''NOTE: Application targets for fiscal year 2013 have been met for the GRU Solar PV Rebate Program. The next round of applications are scheduled to open on October 1, 2013 pending approval of...

297

Solar PV Jobs and Economic Development Impact Model Webinar  

Broader source: Energy.gov [DOE]

Join the DOE SunShot Initiative, in conjunction with the National Renewable Energy Laboratory, for a webinar on August 21, 2013, at 2-3 p.m. EST highlighting the Scenario Solar PV Jobs and Economic...

298

Tucson's Solar Experience: Developing PV with RFPs and PPAs  

Office of Energy Efficiency and Renewable Energy (EERE)

This presentation was given January 15, 2013, by Bruce Plenk, Solar Coordinator for the City of Tucson, Arizona, as part of the CommRE Developing PV Projects With RFPs and PPAs webinar.

299

Interconnecting PV on New York City's Secondary Network Distribution System  

SciTech Connect (OSTI)

This study describes technical assistance provided by NREL to help New York City and Con Edison improve the interconnection of distributed PV systems on a secondary network distribution system.

Anderson, K.; Coddington, M.; Burman, K.; Hayter, S.; Kroposki, B.; Watson, A.

2009-12-01T23:59:59.000Z

300

Impact of Soiling and Pollution on PV Generation Performance  

Broader source: Energy.gov [DOE]

This 5-page technical letter addresses air pollution effects on PV performance by quantifying, based on a literature search, the average annual loss due to soiling, the impact of cleaning, and a recommended cleaning schedule.

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Agenda for the PV Module Reliability Workshop, February 26 -...  

Broader source: Energy.gov (indexed) [DOE]

Technology, "PV Standards: What New Things Does the IEC Have for You?" 4. L. Sherwood of Solar ABCs, "Recent Reports from the Solar America Board for Codes and Standards" 5. A....

302

Taunton Municipal Lighting Plant- Residential PV Rebate Program  

Broader source: Energy.gov [DOE]

Customers of Taunton Municipal Lighting Plant (TMLP) may be eligible for $2.00/watt rebate on solar photovoltaic (PV) installations. The minimum system size eligible for this rebate is 1 kilowatt ...

303

Wind and Solar-Electric (PV) Systems Exemption  

Broader source: Energy.gov [DOE]

Minnesota excludes the value added by solar-electric (PV) systems installed after January 1, 1992 from real property taxation. In addition all real and personal property of wind-energy systems is...

304

PV VALUE(tm) User Manual v. 1.0  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PV Value(tm) User Manual v. 1.0 Jamie L. Johnson - Solar Power Electric(tm) Geoffrey T. Klise - Sandia National Laboratories 1312012 SAND2012-0682P Sandia National Laboratories...

305

New York Sun Competitive PV Program (New York)  

Broader source: Energy.gov [DOE]

The New York Sun Competitive Photovoltaic (PV) Program is an expansion of the Renewable Portfolio Standard (RPS) Customer-Sited Tier Regional Program that includes Upstate New York. The New York...

306

Perspective on International PV Challenge & Opportunities for Rural Development  

SciTech Connect (OSTI)

International market opportunities for the sale and deployment of photovoltaic (PV) systems abound and will continue to out-pace domestic, grid-connected opportunities for the foreseeable future.

Taylor, R. W.

2000-01-01T23:59:59.000Z

307

SIMULATION OF ORIENTATION IN INJECTION MOLDING OF A HIGHLY CONCENTRATED, SHORT GLASS FIBER THERMOPLASTIC COMPOSITES  

E-Print Network [OSTI]

using a time-delayed orientation evolution equation and their material parameters determined from Balance Equations The conservation equations for isothermal flow and highly viscous fluid are described using the method of ellipses. The orientation evolution equations are discretized using discontinuous

Wapperom, Peter

308

Sensitivity of Concentrating Solar Power Trough Performance, Cost and Financing with Solar Advisor Model  

SciTech Connect (OSTI)

A comprehensive solar technology systems analysis model, the Solar Advisor Model (SAM) was developed to support the federal R&D community and the solar industry. This model, developed by staff at NREL and Sandia National Laboratory, is able to model the costs, finances, and performance of concentrating solar power and photovoltaics (PV). Currently, parabolic troughs and concentrating PV are the two concentrating technologies modeled within the SAM environment.

Blair, N.; Mehos, M.; Christensen, C.

2008-03-01T23:59:59.000Z

309

Phenylnaphthalene as a Heat Transfer Fluid for Concentrating Solar Power: High-Temperature Static Experiments  

SciTech Connect (OSTI)

Concentrating solar power (CSP) may be an alternative to generating electricity from fossil fuels; however, greater thermodynamic efficiency is needed to improve the economics of CSP operation. One way of achieving improved efficiency is to operate the CSP loop at higher temperatures than the current maximum of about 400 C. ORNL has been investigating a synthetic polyaromatic oil for use in a trough type CSP collector, to temperatures up to 500 C. The oil was chosen because of its thermal stability and calculated low vapor and critical pressures. The oil has been synthesized using a Suzuki coupling mechanism and has been tested in static heating experiments. Analysis has been conducted on the oil after heating and suggests that there may be some isomerization taking place at 450 C, but the fluid appears to remain stable above that temperature. Tests were conducted over one week and further tests are planned to investigate stabilities after heating for months and in flow configurations. Thermochemical data and thermophysical predictions indicate that substituted polyaromatic hydrocarbons may be useful for applications that run at higher temperatures than possible with commercial fluids such as Therminol-VP1.

Bell, Jason R [ORNL; Joseph III, Robert Anthony [ORNL; McFarlane, Joanna [ORNL; Qualls, A L [ORNL

2012-05-01T23:59:59.000Z

310

Bright x-ray sources from laser irradiation of foams with high concentration of Ti  

SciTech Connect (OSTI)

Low-density foams irradiated by a 20 kJ laser at the Omega laser facility (Laboratory for Laser Energetics, Rochester, NY, USA) are shown to convert more than 5% of the laser energy into 4.6 to 6.0?keV x rays. This record efficiency with foam targets is due to novel fabrication techniques based on atomic-layer-deposition of Ti atoms on an aerogel scaffold. A Ti concentration of 33 at.?% was obtained in a foam with a total density of 5?mg/cm{sup 3}. The dynamics of the ionization front through these foams were investigated at the 1 kJ laser of the Gekko XII facility (Institute for Laser Engineering, Osaka, Japan). Hydrodynamic simulations can reproduce the average electron temperature but fail to predict accurately the heat front velocity in the foam. This discrepancy is shown to be unrelated to the possible water adsorbed in the foam but could be attributed to effects of the foam micro-structure.

Pťrez, F., E-mail: perez75@llnl.gov; Patterson, J. R.; May, M.; Colvin, J. D.; Biener, M. M.; Wittstock, A.; Kucheyev, S. O.; Charnvanichborikarn, S.; Satcher, J. H.; Gammon, S. A.; Poco, J. F.; Fournier, K. B. [Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States)] [Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States); Fujioka, S.; Zhang, Z.; Ishihara, K.; Tanaka, N.; Ikenouchi, T.; Nishimura, H. [Institute of Laser Engineering, Osaka University, 2-6 Yamada-Oka, Suita, Osaka 565-0871 (Japan)] [Institute of Laser Engineering, Osaka University, 2-6 Yamada-Oka, Suita, Osaka 565-0871 (Japan)

2014-02-15T23:59:59.000Z

311

Time-dependent first-principles approaches to PV materials  

SciTech Connect (OSTI)

Computational scheme for designing photovoltaic (PV) materials is presented. First-principles electron dynamics of photo-excitation and subsequent electron-hole splitting is performed based on the time-dependent density functional theory. Photo-induced enhancement of dipole moment was observed in a polar crystal and a donor-acceptor molecular pair. These experiences will pave a way to design PV material from first-principles simulations.

Miyamoto, Yoshiyuki [Nanosystem Research Institute, AIST, Central 2, 1-1-1, Umezono, Tsukuba, 305-8568 (Japan)

2013-12-10T23:59:59.000Z

312

100-NR-2 Apatite Treatability Test FY09 Status: High Concentration Calcium-Citrate-Phosphate Solution Injection for In Situ Strontium-90 Immobilization  

SciTech Connect (OSTI)

100-NR-2 Apatite Treatability Test FY09 Status: High Concentration Calcium-Citrate-Phosphate Solution Injection for In Situ Strontium-90 Immobilization INTERIM LETTER REPORT

Vermeul, Vincent R.; Fritz, Brad G.; Fruchter, Jonathan S.; Szecsody, James E.; Williams, Mark D.

2009-12-16T23:59:59.000Z

313

Sandia National Laboratories: PV Power Tech: PV Power Plant Technology and  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLongAnalysisPV PerformanceBusiness

314

Method for producing high carrier concentration p-Type transparent conducting oxides  

DOE Patents [OSTI]

A method for producing transparent p-type conducting oxide films without co-doping plasma enhancement or high temperature comprising: a) introducing a dialkyl metal at ambient temperature and a saturated pressure in a carrier gas into a low pressure deposition chamber, and b) introducing NO alone or with an oxidizer into the chamber under an environment sufficient to produce a metal-rich condition to enable NO decomposition and atomic nitrogen incorporation into the formed transparent metal conducting oxide.

Li, Xiaonan (Evergreen, CO); Yan, Yanfa (Littleton, CO); Coutts, Timothy J. (Golden, CO); Gessert, Timothy A. (Conifer, CO); Dehart, Clay M. (Westminster, CO)

2009-04-14T23:59:59.000Z

315

Continuing Developments in PV Risk Management: Strategies, Solutions, and Implications  

SciTech Connect (OSTI)

As the PV industry matures, successful risk management practices will become more imperative to ensure investor confidence, control costs, and facilitate further growth. This report discusses several key aspects of risk management during the commercial- and utility-scale project life cycle, from identification of risks, to the process of mitigating and allocating those risks among project parties, to transferring those risks through insurance. The report also explores novel techniques in PV risk management, options to offload risks onto the capital markets, and innovative insurance policies (namely warranty policies) that address risks unique to the PV sector. One of the major justifications for robust risk management in the PV industry is the cost-reduction opportunities it affords. If the PV industry can demonstrate the capability to successfully manage its risks, thereby inspiring confidence in financiers, it may be able to obtain a lower cost of capital in future transactions. A lower cost of capital translates to a lower cost of energy, which will in turn enhance PV?s competitiveness at a time when it will have to rely less on subsidies to support its market penetration.

Lowder, T.; Mendelsohn, M.; Speer, B.; Hill, R.

2013-02-01T23:59:59.000Z

316

Review of PV Inverter Technology Cost and Performance Projections  

SciTech Connect (OSTI)

The National Renewable Energy Laboratory (NREL) has a major responsibility in the implementation of the U.S. Department of Energy's (DOE's) Solar Energy Technologies Program. Sandia National Laboratories (SNL) has a major role in supporting inverter development, characterization, standards, certifications, and verifications. The Solar Energy Technologies Program recently published a Multiyear Technical Plan, which establishes a goal of reducing the Levelized Energy Cost (LEC) for photovoltaic (PV) systems to $0.06/kWh by 2020. The Multiyear Technical Plan estimates that, in order to meet the PV system goal, PV inverter prices will need to decline to $0.25-0.30 Wp by 2020. DOE determined the need to conduct a rigorous review of the PV Program's technical and economic targets, including the target set for PV inverters. NREL requested that Navigant Consulting Inc.(NCI) conduct a review of historical and projected cost and performance improvements for PV inverters, including identification of critical barriers identified and the approaches government might use to address them.

Navigant Consulting Inc.

2006-01-01T23:59:59.000Z

317

GaInP/GaAs/GaInAs Monolithic Tandem Cells for High-Performance Solar Concentrators  

SciTech Connect (OSTI)

We present a new approach for ultra-high-performance tandem solar cells that involves inverted epitaxial growth and ultra-thin device processing. The additional degree of freedom afforded by the inverted design allows the monolithic integration of high-, and medium-bandgap, lattice-matched (LM) subcell materials with lower-bandgap, lattice-mismatched (LMM) materials in a tandem structure through the use of transparent compositionally graded layers. The current work concerns an inverted, series-connected, triple-bandgap, GaInP (LM, 1.87 eV)/GaAs (LM, 1.42 eV)/GaInAs (LMM, {approx}1 eV) device structure grown on a GaAs substrate. Ultra-thin tandem devices are fabricated by mounting the epiwafers to pre-metallized Si wafer handles and selectively removing the parent GaAs substrate. The resulting handle-mounted, ultra-thin tandem cells have a number of important advantages, including improved performance and potential reclamation/reuse of the parent substrate for epitaxial growth. Additionally, realistic performance modeling calculations suggest that terrestrial concentrator efficiencies in the range of 40-45% are possible with this new tandem cell approach. A laboratory-scale (0.24 cm2), prototype GaInP/GaAs/GaInAs tandem cell with a terrestrial concentrator efficiency of 37.9% at a low concentration ratio (10.1 suns) is described, which surpasses the previous world efficiency record of 37.3%.

Wanlass, M. W.; Ahrenkiel, S. P.; Albin, D. S.; Carapella, J. J.; Duda, A.; Emery, K.; Geisz, J. F.; Jones, K.; Kurtz, S.; Moriarty, T.; Romero, M. J.

2005-08-01T23:59:59.000Z

318

Correlations in Characteristic Data of Concentrator Photovoltaics (Poster)  

SciTech Connect (OSTI)

This study is motivated by a reported 1-2% infant mortality rate in concentrator photovoltaic cell assemblies. Approximately 650 bare III-V multi-junction PV cells were initially characterized via electroluminescence imaging and both light and dark current-voltage responses were recorded. The cells were then packaged into receivers and their IV response again evaluated both before and after an outdoor high concentration exposure of at least four hours above 750 DNI. Correlations exist between the initial dark IV characteristic and artifacts found in the EL image. Initial results also suggest that artifacts observed in the bare cell may serve as an indicator for early on-sun degradation, though may not be able to predict the infant mortality population.

Sweet, C.; Bosco, N.; Kurtz, S.

2011-02-01T23:59:59.000Z

319

Lightweight PV Inverters: Dual Bi-Directional IGBTs Modules Enables Breakthrough PV Inverter Using Current Modulation Topology  

SciTech Connect (OSTI)

Solar ADEPT Project: PV inverters convert DC power generated by modules into usable AC power. IPCís initial 30kW 94lb. PV inverter reduces the weight of comparable 30kW PV inverters by 90%óreducing the cost of materials, manufacturing, shipping, and installation. With ARPA-E support, new bi-directional silicon power switches will be developed, commercialized, and utilized in IPCís next-generation PV inverter. With these components, IPC will produce 100kW inverters that weight less than 100lb., reducing the weight of conventional 3,000lb. 100kW inverters by more than 95%. The new power switches will cut IPCís $/W manufacturing cost in half, as well as further reduce indirect shipping and installation costs.

None

2012-01-30T23:59:59.000Z

320

Concentrating Solar Power Forum Concentrating Photovoltaics (Presentation)  

SciTech Connect (OSTI)

This presentation's summaries: a convenient truth, comparison of three concentrator technologies, value of high efficiency, and status of industry.

Kurtz, S.

2008-05-06T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Determination of respirable mass concentration using a high volume air sampler and a sedimentation method for fractionation  

SciTech Connect (OSTI)

A preliminary study of a new method for determining respirable mass concentration is described. This method uses a high volume air sampler and subsequent fractionation of the collected mass using a particle sedimentation technique. Side-by-side comparisons of this method with cyclones were made in the field and in the laboratory. There was good agreement among the samplers in the laboratory, but poor agreement in the field. The effect of wind on the samplers` capture efficiencies is the primary hypothesized source of error among the field results. The field test took place at the construction site of a hazardous waste landfill located on the Hanford Reservation.

Johnson, J.

1995-12-31T23:59:59.000Z

322

Microscale solar cells for high concentration on polycrystalline Cu(In,Ga)Se2 Myriam Paire,1,2,3,4,a)  

E-Print Network [OSTI]

Microscale solar cells for high concentration on polycrystalline Cu(In,Ga)Se2 thin films Myriam experiments on polycrystalline thin film solar cells. High level regime is reached, thanks to the micrometric grids are used on concentrator solar cells. The grid coverage is a trade-off between the decreased

Paris-Sud XI, Université de

323

Challenge to Move from 'One Size Fits All' to PV Modules the Customer Needs: Preprint  

SciTech Connect (OSTI)

Historically, PV companies requested a single qualification test for a single product. As the market has grown, there have been increasing opportunities for companies to differentiate their products while still maintaining high manufacturing volumes of each product. At the same time, as PV is deployed in an increasingly broad range of conditions, modules need to be able to withstand a wide range of stresses. In some cases, targeting a specific deployment condition may allow reduction of product cost. Realizing this opportunity will require the ability to confidently predict long-term performance based on accelerated tests and known weather conditions. By working together, the community can most quickly develop tests that identify which products perform well under which conditions. This paper discusses some of the challenges of predicting long-term PV performance, including the wide range of stresses that may be encountered, the variability of the stresses from moment to moment, the complexity of some degradation mechanisms, and the dependence of accelerated testing on module geometry. The paper also describes two international projects that deal with location-specific durability evaluation and long-term module performance.

Kurtz, S.; Wohlgemuth, J.; Hacke, P.; Bosco, N.; Kempe, M.; Smith, R.; Packard, C. E.

2011-09-01T23:59:59.000Z

324

Environmental impacts of building integrated PV applications in the state public buildings sector  

SciTech Connect (OSTI)

If the US is to meet its commitments for CO{sub 2} and SO{sub 2} emission reductions, as anticipated by the 1997 Kyoto Protocol on Climate Change and the Clean air Act Amendments of 1990, it almost certainly must implement policies to increase the use of renewable energy. This paper evaluates the potential of photovoltaic (PV) technologies to deliver high-value electrical services while offsetting SO{sub 2} and CO{sub 2} emissions. Their study focuses on PV applications in the public buildings sector because of its potential for speeding the commercialization of the technology in a market conducive to long-term return on investment. The study investigates the economic and environmental implications of PV meeting 2% of the energy demand of public buildings. The specific application investigated is a roof-mounted dispatchable peak-shaving system with uninterruptible power supply (UPS) capability. Several previous studies have shown that such a system is cost-effective on the basis of the energy services it provides. The present analysis indicates that this application can play an important role in helping the US meet its CO{sub 2} and SO{sub 2} emissions targets.

Byrne, J.; Agbemabiese, L.; Kliesch, J.; Eiffert, P.; Hadjilambrinos, C.; Nigro, R.

1999-07-01T23:59:59.000Z

325

Property Tax Assessments as a Finance Vehicle for Residential PV Installations: Opportunities and Potential Limitations  

SciTech Connect (OSTI)

Readily accessible credit has often been cited as a necessary ingredient to open up the market for residential photovoltaic (PV) systems. Though financing does not reduce the high up-front cost of PV, by spreading that cost over some portion of the system's life, financing can certainly make PV systems more affordable. As a result, a number of states have, in the past, set up special residential loan programs targeting the installation of renewable energy systems and/or energy efficiency improvements, and often featuring low interest rates, longer terms, and no-hassle application requirements. Historically, these loan programs have met with mixed success (particularly for PV), for a variety of reasons, including: (1) historical lack of homeowner interest in PV, (2) lack of program awareness, (3) reduced appeal in a low-interest-rate environment, and (4) a tendency for early PV adopters to be wealthy, and not in need of financing. Although some of these barriers have begun to fade--most notably, homeowner interest in PV has grown in some states, particularly those that offer solar rebates--the passage of the Energy Policy Act of 2005 (EPAct 2005) introduced one additional roadblock to the success of low-interest PV loan programs: a residential solar investment tax credit (ITC), subject to the Federal government's 'anti-double-dipping' rules. Specifically, the residential solar ITC--equal to 30% of the system's tax basis, capped at $2000--will be reduced or offset if the system also benefits from what is known as 'subsidized energy financing', which is likely to include most government-sponsored low-interest loan programs. Within this context, it has been interesting to note the recent flurry of announcements from several U.S cities concerning a new type of PV financing program. Led by the City of Berkeley, California, these cities propose to offer their residents the ability to finance the installation of a PV system using increased property tax assessments, rather than a more-traditional credit vehicle, to recover both system and administrative costs. As discussed in more detail later, this seemingly innovative approach has a number of features that should appeal to PV owners, including: long-term, fixed-cost, attractive financing; loans that are tied to the tax capacity of the property rather than to the owner's credit standing; a repayment obligation that transfers along with the sale of the property; and a potential ability to deduct the repayment obligation from Federal taxable income, as part of the local property tax deduction. For these reasons, Berkeley's program--which was first announced on October 23, 2007--has received considerable nationwide attention in both the trade and general press. Since the announcement, cities from throughout California and the broader U.S. have expressed keen interest in the possibility of replicating this type of program. In California alone, the cities of Santa Cruz, Santa Monica, and Palm Desert are all reportedly considering similar programs, while the city of San Francisco has recently announced its own program, portions of which closely parallel Berkeley's approach. Berkeley's Proposed PV Program In addition, a bill (AB 811) that would authorize all cities (not just 'charter cities' like Berkeley) in California to create this type of program was approved by the California General Assembly on January 29, 2008 and passed on to the State Senate for consideration. That local governments from across California and the broader US are so genuinely excited about the prospect of supporting the installation of residential PV in their communities through this type of program is no doubt an interesting development. Given, however, the potential for such programs to negatively interact with the residential solar ITC, it is important to evaluate the financial attractiveness of this specific type of loan program, particularly in advance of any broader state- or nation-wide 'rollout'. This case study presents such an evaluation. Because Berkeley appears to have the most-well-developed proposa

Bolinger, Mark A; Bolinger, Mark

2008-02-01T23:59:59.000Z

326

Concentrating Photovoltaics (Presentation)  

SciTech Connect (OSTI)

Solar is growing rapidly, and the concentrating photovoltaics industry-both high- and low-concentration cell approaches-may be ready to ramp production in 2009.

Kurtz, S.

2009-01-20T23:59:59.000Z

327

Introduction! Low Cost, High Volume, Scale-up Photovoltaic Manufacturing!  

E-Print Network [OSTI]

Introduction! Low Cost, High Volume, Scale-up Photovoltaic Manufacturing! Prof. Shreyes Melkote, Manufacturing Research Center, Georgia Institute of Technology Photovoltaics (PV) will be part of the energy mix volume PV manufacturing, therefore to reduce manufacturing cost and accelerate PV use. ! q Silicon wafer

Das, Suman

328

Purification of soluble and active RaxH, a transmembrane histidine protein kinase from Xanthomonas oryzae pv. oryzae required for AvrXa21 activity.  

E-Print Network [OSTI]

of the plant pathogenic bacterium Xanthomonas campestris pv.oryzae pv. oryzae isolates in transgenic plants. Mol. PlantĖXanthomonas oryzae pv. oryzae. Mol. PlantĖMicrobe Interact.

Stolov, Avital; Valverde, Angel; Ronald, Pamela; Burdman, Saul

2007-01-01T23:59:59.000Z

329

National Aeronautics and Space Administration Ultra-Light, Low-Cost Solar Concentrator Offers  

E-Print Network [OSTI]

a thin film lens to concentrate a large area of sunlight onto a small area of photovoltaic (PV) cells optimized for the best performance, reliability, and efficiency through NASA's award-winning space

330

Environmental Assessment and Metrics for Solar: Case Study of SolFocus Solar Concentrator Systems  

E-Print Network [OSTI]

Greenhouse gas analysis of solar-thermal electricity gen-CdTe Concentrator PV Solar Thermal Wind Coal CC Gas Turbinefor the assessment of thermal solar systems,Ē Proceedings of

Reich-Weiser, Corinne; Dornfeld, David; Horne, Steve

2008-01-01T23:59:59.000Z

331

PV Module Reliability R&D Project Overview  

SciTech Connect (OSTI)

The DOE Solar Energy Technologies Program includes a sub-key activity entitled ''Photovoltaic Module Reliability R&D''. This activity has been in existence for several years to help ensure that the PV technologies that advance to the commercial module stage have acceptable service lifetimes and annual performance degradation rates. The long-term (2020) goal, as stated in the Solar Program Multi-Year Technical Plan [1], is to assist industry with the development of PV systems that have 30-year service lifetimes and 1% annual performance degradation rates. The corresponding module service lifetimes and annual performance degradation rate would have to be 30 years lifetime and approximately 0.5% (or less, depending on the type of PV system) annual performance degradation. Reaching this goal is critical to achieving the PV technology Levelized Energy Cost Targets, as listed and described in the Solar Program Multi-Year Technical Plan. This paper is an overview of the Module Reliability R&D sub-key activity. More details and the major results and accomplishments are covered in the papers presented in the PV Module Reliability Session of the DOE Solar Energy Technology Review Meeting, October 25-28, 2004, in Denver, Colorado.

Hulstrom, R. L.

2005-01-01T23:59:59.000Z

332

PVMaT cost reductions in the EFG high volume PV manufacturing line: Annual report, 5 August 1998--4 August 1999[PhotoVoltaic Manufacturing Technology, Edge-defined Film-fed Growth  

SciTech Connect (OSTI)

This report describes work performed by ASE Americas researchers during the first year of this Photovoltaic Manufacturing Technology 5A2 program. Significant accomplishments in each of three task are as follows. Task 1--Manufacturing Systems: Researchers completed key node analysis, started statistical process control (SPC) charting, carried out design-of-experiment (DoE) matrices on the cell line to optimize efficiencies, performed a capacity and bottleneck study, prepared a baseline chemical waste analysis report, and completed writing of more than 50% of documentation and statistical sections of ISO 9000 procedures. A highlight of this task is that cell efficiencies in manufacturing were increased by 0.4%--0.5% absolute, to an average in excess of 14.2%, with the help of DoE and SPC methods. Task 2--Low-Cost Processes: Researchers designed, constructed, and tested a 50-cm-diameter, edge-defined, film-fed growth (EFG) cylinder crystal growth system to successfully produce thin cylinders up to 1.2 meters in length; completed a model for heat transfer; successfully deployed new nozzle designs and used them with a laser wafer-cutting system with the potential to decrease cutting labor costs by 75% and capital costs by 2X; achieved laser-cutting speeds of up to 8X and evaluation of this system is proceeding in production; identified laser-cutting conditions that reduce damage for both Q-switched Nd:YAG and copper-vapor lasers with the help of a breakthrough in fundamental understanding of cutting with these short-pulse-length lasers; and found that bulk EFG material lifetimes are optimized when co-firing of silicon nitride and aluminum is carried out with rapid thermal processing (RTP). Task 3--Flexible Manufacturing: Researchers improved large-volume manufacturing of 10-cm {times} 15-cm EFG wafers by developing laser-cutting fixtures, adapting carriers and fabricating adjustable racks for etching and rinsing facilities, and installing a high-speed data collection net work; initiated fracture studies to develop methods to reduce wafer breakage; and started a module field studies program to collect data on field failures to help identify potential manufacturing problems. New encapsulants, which cure at room temperature, are being tested to improve flexibility and provide higher yields for thin wafers in lamination.

Bathey, B.; Brown, B.; Cao, J.; Ebers, S.; Gonsiorawski, R.; Heath, B.; Kalejs, J.; Kardauskas, M.; Mackintosh, B.; Ouellette, M.; Piwczyk, B.; Rosenblum, M.; Southimath, B.

1999-11-16T23:59:59.000Z

333

PV Cell and Module Calibration Activities at NREL  

SciTech Connect (OSTI)

The performance of PV cells and modules with respect to standard reference conditions is a key indicator of progress of a given technology. This task provides the U.S. terrestrial PV community with the most accurate measurements that are technically possible in a timely fashion. The international module certification and accreditation program PVGap requires certification laboratories to maintain their calibration traceability path to groups like this one. The politics of a "world record" efficiency requires that an independent laboratory perform these measurements for credibility. Most manufacturers base their module peak watt rating upon standards and reference cells calibrated under this task. This task has been involved in reconciling disputes between manufacturers and their cell suppliers in terms of expected versus actual performance. This task has also served as a resource to the PV community for consultation on solar simulation, current versus voltage measurement instrumentation, measurement procedures and measurement artifacts.

Emery, K.; Anderberg, A.; Kiehl, J.; Mack, C.; Moriarty, T.; Ottoson, L.; Rummel, S.

2005-11-01T23:59:59.000Z

334

The cloned gene, Xa21, confers resistance to multiple Xanthomonas oryzae pv. oryzae isolates in transgenic plants.  

E-Print Network [OSTI]

Tl progeny plants were inoculated with X.oryzae pv. oryzae.oryzae pv. oryzae in transgenic plants. The resistanceoryzae pv. oryzae Isolates in Transgenic Plants Guo-Liang

Wang, G L; Song, W Y; Ruan, D L; Sideris, S; Ronald, P C

1996-01-01T23:59:59.000Z

335

Comparative Studies on Temperature Dependent I-V Characteristics of Al/(p)CdTe and Ni/(n)CdS Schottky Junctions and Their PV Effect  

SciTech Connect (OSTI)

Temperature dependent I-V characteristics of vacuum evaporated Al/(p)CdTe and Ni/(n)CdS Schottky junctions and their photovoltaic effects have been studied and compared. Different junction parameters such as ideality factors, barrier heights, Richardson's constant, short-circuit current density, fill factor, PV efficiency etc. were determined from their I-V characteristics. These parameters were found to change significantly on variation of temperature. The structures showed the change of PV effect. Efficiency found were 2.84% for Al/(p)CdTe and 4.44% for Ni hydro/(n)CdS. Polycrystalline nature, and continuous and ordered structure with bigger grain sizes of the CdS film shows more PV conversion efficiency in making Ni/(n)CdS junction as compare to Al/(p)CdTe junction. However these values were found to vary with doping concentration, and in hydrogen treated samples in both cases.

Wary, G. [Department of Physics, Cotton College, Guwahati-781001 (India); Kachari, T.; Rahman, A. [Department of Physics, Gauhati University, Guwahati-781014 (India)

2010-06-29T23:59:59.000Z

336

Toward integrated PV panels and power electronics using printing technologies  

SciTech Connect (OSTI)

In this paper, we review the latest developments in the area of printing technologies with an emphasis on the fabrication of control-embedded photovoltaics (PV) with on-board active and passive devices. We also review the use of power converters and maximum power point tracking (MPPT) circuits with PV panels. Our focus is on the investigation of the simplest implementations of such circuits in view of their integration with solar cells using printing technologies. We see this concept as potentially enabling toward further cost reduction. Besides a discussion as to feasibility, we shall also present some projections and guidelines toward possible integration. (author)

Ababei, Cristinel; Yuvarajan, Subbaraya [Electrical and Computer Engineering Department, North Dakota State University, Fargo, ND 58108 (United States); Schulz, Douglas L. [Center for Nanoscale Science and Engineering, North Dakota State University, Fargo, ND 58102 (United States)

2010-07-15T23:59:59.000Z

337

Testing of Packaging Materials for Improved PV Module Reliability  

SciTech Connect (OSTI)

A number of candidate alternative encapsulant and soft backsheet materials have been evaluated in terms of their suitability for photovoltaic (PV) module packaging applications. Relevant properties, including interfacial adhesion and moisture transport, have been measured as a function of damp-heat (85 C/85% relative humidity) exposure. Based on these tests, promising new encapsulants with improved properties have been identified. Backsheets prepared by industry and at NREL have been found to provide varying levels of moisture ingress protection. To achieve significantly improved products, further development of these candidates is ongoing. The relative effectiveness of various packaging strategies to protect PV devices has also been investigated.

Jorgensen, G. J.; Terwilliger, K. M.; Kempe, M. D.; McMahon, T. J.

2005-02-01T23:59:59.000Z

338

Outdoor PV Module Degradation of Current-Voltage Parameters: Preprint  

SciTech Connect (OSTI)

Photovoltaic (PV) module degradation rate analysis quantifies the loss of PV power output over time and is useful for estimating the impact of degradation on the cost of energy. An understanding of the degradation of all current-voltage (I-V) parameters helps to determine the cause of the degradation and also gives useful information for the design of the system. This study reports on data collected from 12 distinct mono- and poly-crystalline modules deployed at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. Most modules investigated showed < 0.5%/year decrease in maximum power due to short-circuit current decline.

Smith, R. M.; Jordan, D. C.; Kurtz, S. R.

2012-04-01T23:59:59.000Z

339

Evaluation of annual efficiencies of high temperature central receiver concentrated solar power plants with thermal energy storage.  

SciTech Connect (OSTI)

The current study has examined four cases of a central receiver concentrated solar power plant with thermal energy storage using the DELSOL and SOLERGY computer codes. The current state-of-the-art base case was compared with a theoretical high temperature case which was based on the scaling of some input parameters and the estimation of other parameters based on performance targets from the Department of Energy SunShot Initiative. This comparison was done for both current and high temperature cases in two configurations: a surround field with an external cylindrical receiver and a north field with a single cavity receiver. There is a fairly dramatic difference between the design point and annual average performance, especially in the solar field and receiver subsystems, and also in energy losses due to the thermal energy storage being full to capacity. Additionally, there are relatively small differences (<2%) in annual average efficiencies between the Base and High Temperature cases, despite an increase in thermal to electric conversion efficiency of over 8%. This is due the increased thermal losses at higher temperature and operational losses due to subsystem start-up and shut-down. Thermal energy storage can mitigate some of these losses by utilizing larger thermal energy storage to ensure that the electric power production system does not need to stop and re-start as often, but solar energy is inherently transient. Economic and cost considerations were not considered here, but will have a significant impact on solar thermal electric power production strategy and sizing.

Ehrhart, Brian David; Gill, David Dennis

2013-07-01T23:59:59.000Z

340

Thermo-physical and structural studies of sodium zinc borovanadate glasses in the region of high concentration of modifier oxides  

SciTech Connect (OSTI)

Highlights: ? Highly modified sodium zinc borovanadate glasses. ? Structural model for borovanadate glasses. ? Network forming tendency of ZnO in borovanadate glasses. ? Fragility can be limited to NBO concentration in borovanadate glasses. -- Abstract: This paper reports investigation of Na{sub 2}O and ZnO modified borovanadate glasses in the highly modified regime of compositions. These glasses have been prepared by microwave route. Ultraviolet (UV) and visible, infrared (IR), Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR) and Electron Paramagnetic Resonance (EPR) spectroscopies have been used to characterize the speciation in the glasses. Together with the variation of properties such as molar volume and glass transition temperatures, spectroscopic data indicate that at high levels of modification, ZnO tends to behave like network former. It is proposed that the observed variation of all the properties can be reasonably well understood with a structural model. The model considers that the modification and speciation in glasses are strongly determined by the hierarchy of group electronegativities. Further, it is proposed that the width of the transitions of glasses obtained under same condition reflects the fragility of the glasses. An empirical expression has been suggested to quantify fragility on the basis of width of the transition regions.

Chethana, B.K. [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India)] [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India); Reddy, C. Narayana [Maharani's Science College for Women, Bangalore 560 001 (India)] [Maharani's Science College for Women, Bangalore 560 001 (India); Rao, K.J., E-mail: kalyajrao@yahoo.co.in [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India)

2012-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Modular Power Converters for PV Applications  

SciTech Connect (OSTI)

This report describes technical opportunities to serve as parts of a technological roadmap for Shoals Technologies Group in power electronics for PV applications. There are many different power converter circuits that can be used for solar inverter applications. The present applications do not take advantage of the potential for using common modules. We envision that the development of a power electronics module could enable higher reliability by being durable and flexible. Modules would have fault current limiting features and detection circuits such that they can limit the current through the module from external faults and can identify and isolate internal faults such that the remaining modules can continue to operate with only minimal disturbance to the utility or customer. Development of a reliable, efficient, low-cost, power electronics module will be a key enabling technology for harnessing more power from solar panels and enable plug and play operation. Power electronics for computer power supplies, communication equipment, and transportation have all targeted reliability and modularity as key requirements and have begun concerted efforts to replace monolithic components with collections of common smart modules. This is happening on several levels including (1) device level with intelligent control, (2) functional module level, and (3) system module. This same effort is needed in power electronics for solar applications. Development of modular units will result in standard power electronic converters that will have a lower installed and operating cost for the overall system. These units will lead to increased adaptability and flexibility of solar inverters. Incorporating autonomous fault current limiting and reconfiguration capabilities into the modules and having redundant modules will lead to a durable converter that can withstand the rigors of solar power generation for more than 30 years. Our vision for the technology roadmap is that there is no need for detailed design of new power converters for each new application or installation. One set of modules and controllers can be pre-developed and the only design question would be how many modules need to be in series or parallel for the specific power requirement. Then, a designer can put the modules together and add the intelligent reconfigurable controller. The controller determines how many modules are connected, but it might also ask for user input for the specific application during setup. The modules include protection against faults and can reset it, if necessary. In case of a power device failure, the controller reconfigures itself to continue limited operation until repair which might be as simple as taking the faulty module out and inserting a new module. The result is cost savings in design, maintenance, repair, and a grid that is more reliable and available. This concept would be a perfect fit for the recently announced funding opportunity announcement (DE-FOA-0000653) on Plug and Play Photovoltaics.

Ozpineci, Burak [ORNL; Tolbert, Leon M [ORNL

2012-05-01T23:59:59.000Z

342

Improved Reliability of PV Modules with Lexan PC Sheet-Front...  

Broader source: Energy.gov (indexed) [DOE]

Improved Reliability of PV Modules with Lexan PC Sheet-Front Sheet, Noryl PPE Sheet-Back Sheet Improved Reliability of PV Modules with Lexan PC Sheet-Front Sheet, Noryl PPE...

343

Interline Photovoltaic (I-PV) power system - A novel concept of power flow control and management  

E-Print Network [OSTI]

This paper presents a new system configuration for a large-scale Photovoltaic (PV) power system with multi-line transmission/distribution networks. A PV power plant is reconfigured in a way that two adjacent power system ...

Khadkikar, Vinod

344

Interline photovoltaic (I-PV) power plants for voltage unbalance compensation  

E-Print Network [OSTI]

This paper proposes a stationary-frame control method for voltage unbalance compensation using Interline Photovoltaic (I-PV) power system. I-PV power systems are controlled to compensate voltage unbalance autonomously. The ...

Moawwad, Ahmed

345

Can Solar PV Rebates Be Funded with Utility Cost Savings? | Department...  

Broader source: Energy.gov (indexed) [DOE]

Can Solar PV Rebates Be Funded with Utility Cost Savings? Can Solar PV Rebates Be Funded with Utility Cost Savings? This presentation was given by Jan Aceti of Concord Light at the...

346

Designing PV Incentive Programs to Promote System Performance: A Review of Current Practice  

E-Print Network [OSTI]

2006. Celentano, Ron. 2005. ďSDF Solar PV Grant Program inSustainable Development Fund (SDF) Rhode Island RenewableOH Ė DOD OR Ė ETO PA Ė SDF RI Ė RIREF Small PV Program RI Ė

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

347

Climatically Diverse Data Set for Flat-Plate PV Module Model Validations (Presentation)  

SciTech Connect (OSTI)

Photovoltaic (PV) module I-V curves were measured at Florida, Colorado, and Oregon locations to provide data for the validation and development of models used for predicting the performance of PV modules.

Marion, B.

2013-05-01T23:59:59.000Z

348

Dynamic Model Validation of PV Inverters Under Short-Circuit Conditions: Preprint  

SciTech Connect (OSTI)

Photovoltaic (PV) modules have dramatically decreased in price in the past few years, spurring the expansion of photovoltaic deployment. Residential and commercial rooftop installations are connected to the distribution network; large-scale installation PV power plants (PVPs) have benefited from tax incentives and the low cost of PV modules. As the level penetration of PV generation increases, the impact on power system reliability will also be greater. Utility power system planners must consider the role of PV generation in power systems more realistically by representing PV generation in dynamic stability analyses. Dynamic models of PV inverters have been developed in the positive sequence representation. NREL has developed a PV inverter dynamic model in PSCAD/EMTDC. This paper validates the dynamic model with an actual hardware bench test conducted by Southern California Edison's Distributed Energy Resources laboratory. All the fault combinations -- symmetrical and unsymmetrical -- were performed in the laboratory. We compare the simulation results with the bench test results.

Muljadi, E.; Singh, M.; Bravo, R.; Gevorgian, V.

2013-03-01T23:59:59.000Z

349

Distribution System Analysis Tools for Studying High Penetration of PV  

E-Print Network [OSTI]

;Acknowledgements This is the final report for the Power Systems Engineering Research Center (PSERC) research also like to convey special acknowledgement to the PSERC member companies who provided direct

350

Kauai, Hawaii: Solar Resource Analysis and High-Penetration PV...  

Energy Savers [EERE]

Energy Efficiency Opportunities for the Kauai Island Utility Cooperative Clean Energy Policy Analysis: Impact Analysis of Potential Clean Energy Policy Options for the...

351

Junction Evolution During Fabrication of CdS/CdTe Thin-film PV Solar Cells (Presentation)  

SciTech Connect (OSTI)

Discussion of the formation of CdTe thin-film PV junctions and optimization of CdTe thin-film PV solar cells.

Gessert, T. A.

2010-09-01T23:59:59.000Z

352

Robust control strategy for PV system integration in distribution systems M.J. Hossain a,  

E-Print Network [OSTI]

the coming years [1,2]. The technologies of DG include PV genera- tors, wind turbines, small hydro turbines

Pota, Himanshu Roy

353

November 21, 2000 PV Lesson Plan 2 Sample Questions & Answers  

E-Print Network [OSTI]

November 21, 2000 PV Lesson Plan 2 ­ Sample Questions & Answers Prepared for the Oregon Million Solar Roofs Coalition By Frank Vignola ­ University of Oregon Solar Radiation Monitoring Lab John Hocken your understanding: 1. The typical voltage of a silicon solar cell is about 0.5 volts; where does

Oregon, University of

354

Modelling PV Deployment: A Tool Developed at CEEP to  

E-Print Network [OSTI]

Modelling PV Deployment: A Tool Developed at CEEP to Explore the Delaware Market Energy and the University of Delaware August 2014 #12;Center for Energy and Environmental Policy The Center for Energy in energy, environmental, and sustainable development policy. The Center serves as a University-wide forum

Delaware, University of

355

Dynamic Interactions of PV units in Low Volatge Distribution Systems  

E-Print Network [OSTI]

. Abstract--Photovoltaic (PV) units along with other distributed energy resources (DERs) are located close by minimizing the negative interactions. Index Terms--Photovoltaic, negative interactions, distribution systems different DERs may react negatively and degrade reliability. There are several different measures

Pota, Himanshu Roy

356

Utility Scale Solar PV Cost Steven SimmonsSteven Simmons  

E-Print Network [OSTI]

Nuclear Generating Station. 4 #12;6/19/2013 3 EVEN MORE SUNNY HEADLINES New solar panels glisten6/19/2013 1 Utility Scale Solar PV Cost Steven SimmonsSteven Simmons Northwest Power Cost Forecast 5. Levelized Costs 1 SOLAR POWER SYSTEM HAS BRIGHT FUTURE 1. Modest environmental impacts

357

EPJ Photovoltaics 2, 20301 (2011) www.epj-pv.org  

E-Print Network [OSTI]

EPJ Photovoltaics 2, 20301 (2011) www.epj-pv.org DOI: 10.1051/epjpv/2011001 c Owned by the authors, published by EDP Sciences, 2011 EPJ PhotovoltaicsEPJ Photovoltaics Geometrical optimization and electrical online: 1 April 2011 Abstract This article investigates the optimal efficiency of a photovoltaic system

Paris-Sud XI, Universitť de

2011-01-01T23:59:59.000Z

358

Minnesota Power- Solar-Electric (PV) Rebate Program  

Broader source: Energy.gov [DOE]

Minnesota Power offers a rebate of $1,000 per kilowatt (kW) DC for grid-connected solar-electric (PV) systems, with a maximum award of $20,000 per customer or 60% installed costs per customer. This...

359

Fault Current Contribution from Single-Phase PV Inverters  

SciTech Connect (OSTI)

A significant increase in photovoltaic (PV) system installations is expected to come on line in the near future and as the penetration level of PV increases, the effect of PV may no longer be considered minimal. One of the most important attributions of additional PV is what effect this may have on protection systems. Protection engineers design protection systems to safely eliminate faults from the electric power system. One of the new technologies recently introduced into the electric power system are distributed energy resources (DER). Currently, inverter-based DER contributes very little to the power balance on all but a few utility distribution systems. As DER become prevalent in the distribution system, equipment rating capability and coordination of protection systems merit a closer investigation. A collaborative research effort between the National Renewable Energy Laboratory (NREL) and Southern California Edison (SCE) involved laboratory short-circuit testing single-phase (240 VAC) residential type (between 1.5 and 7kW) inverters. This paper will reveal test results obtained from these short-circuit tests.

Keller, J.; Kroposki, B.; Bravo, R.; Robles, S.

2011-01-01T23:59:59.000Z

360

Opportunities and Challenges for Power Electronics in PV Modules (Presentation)  

SciTech Connect (OSTI)

The presentation describes the value of adding DC converters and other power electronics to modules to improve their output even when shading or bad cells would otherwise decrease the module output. The presentation was part of a workshop sponsored by ARPA-E exploring the opportunities for power electronics to support PV applications.

Kurtz, S.; Deline, C.; Wohlgemuth, J.; Marion, B.; Granata, J.

2011-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

November 21, 2000 PV Lesson Plan 2 Solar Electric Arrays  

E-Print Network [OSTI]

rating of a photovoltaic module is typically quoted as the power output of the module when the incidentNovember 21, 2000 PV Lesson Plan 2 ≠ Solar Electric Arrays Prepared for the Oregon Million Solar Roofs Coalition By Frank Vignola ≠ University of Oregon Solar Radiation Monitoring Lab John Hocken

Oregon, University of

362

Optimum Inverter Sizing in Consideration of Irradiance Pattern and PV Incentives  

E-Print Network [OSTI]

Optimum Inverter Sizing in Consideration of Irradiance Pattern and PV Incentives Song Chen* Peng Li Boston, Massachusetts, USA Abstract-- This paper proposes a general method of sizing the inverter for a PV system. The method evaluates effects of PV incentive policies, inverter efficiency curves

Lehman, Brad

363

INTEGRATION OF HELIOCLIM-1 DATABASE INTO PV-GIS TO ESTIMATE SOLAR ELECTRICITY POTENTIAL IN AFRICA  

E-Print Network [OSTI]

INTEGRATION OF HELIOCLIM-1 DATABASE INTO PV-GIS TO ESTIMATE SOLAR ELECTRICITY POTENTIAL IN AFRICA T, the proper configuration of a PV system depends on the knowledge of solar resource, which, although generally service. The PV-GIS approach makes it possible to enhance the spatial resolution of the solar radiation

Paris-Sud XI, Université de

364

THE DEVELOPMENT AND COMMERCIALIZATION OF SOLAR PV TECHNOLOGY IN THE OIL Jonatan Pinksea,b  

E-Print Network [OSTI]

THE DEVELOPMENT AND COMMERCIALIZATION OF SOLAR PV TECHNOLOGY IN THE OIL INDUSTRY Jonatan Pinksea regarding solar PV technology investments, a renewable energy technology that has seen explosive growth towards the development and commercialization of solar PV technology. To investigate this, a multiple case

Paris-Sud XI, Université de

365

Design a PV-AF system using V2G Technology to Improve Power Quality  

E-Print Network [OSTI]

--PHEVs, PV-AF, Active filter, Battery scheme I. INTRODUCTION Plug in Hybrid Electrical Vehicles (PHEVsDesign a PV-AF system using V2G Technology to Improve Power Quality F. R. Islam, and H. R. Pota a photovoltaic shunt active filter (PV- AF) system to improve power quality of photovoltaic generation. A system

Pota, Himanshu Roy

366

2 IAEI NEWS January.February 2005 www.iaei.org PERSPECTIVES ON PV  

E-Print Network [OSTI]

to ease installation and are used in PV systems for battery cables, power conductors to large utility2 IAEI NEWS January.February 2005 www.iaei.org PERSPECTIVES ON PV T he use of fine stranded" industries like the photovoltaic (PV) industry, the fuel cell indus- try, and the uninterruptible power

Johnson, Eric E.

367

OPTIMIZATION WITH ENERGY MANAGEMENT OF PV BATTERY STAND-ALONE SYSTEMS OVER THE ENTIRE LIFE CYCLE  

E-Print Network [OSTI]

of both the installed PV power and storage capacity (lead-acid battery technology for purposes). Keywords: Battery storage and control, Lifetime simulation, PV system. 1. INTRODUCTION Given the sizableOPTIMIZATION WITH ENERGY MANAGEMENT OF PV BATTERY STAND-ALONE SYSTEMS OVER THE ENTIRE LIFE CYCLE

Paris-Sud XI, Université de

368

The figure shows the current energy pay back time for PV  

E-Print Network [OSTI]

, Senior researcher at Utrecht University, The Netherlands "We found that today's PV systems have an energy statement is: "The energy balance of solar PV is clearly positive today and will further improveThe figure shows the current energy pay back time for PV systems using different cell technologies

369

Distributed Solar PV for Electricity System Resiliency: Policy and Regulatory Considerations (Brochure)  

SciTech Connect (OSTI)

Distributed Solar PV systems have the potential of increasing the grid's resiliency to unforeseen events, such as extreme weather events and attacks. This paper presents the role that distributed PV can play in electric grid resiliency, introduces basic system design requirements and options, and discusses the regulatory and policy options for supporting the use of distributed PV for the purpose of increased electricity resiliency.

Not Available

2014-11-01T23:59:59.000Z

370

Keywords: Photovoltaic System, fault-tolerance, recon-figurable PV panel  

E-Print Network [OSTI]

plants, and satellites. The output power of a PV cell (also called solar cell) is dependent on the solar: naehyuck@elpl.snu.ac.kr). output power of a PV cell increases as solar irradiance increases and temperature irradiance level and temperature. Figure 1 shows PV cell output current-voltage and power

Pedram, Massoud

371

PV Solar Planet | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories onFocusOski Energy LLC Place:Ferry County Jump

372

The Open PV Project | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop, Inc Place:InnovationFunds-BusinessOhio Environmental Council

373

The Effect of PV Array Size and Battery Size on the Economics of PV/Diesel/Battery Hybrid RAPS Systems  

E-Print Network [OSTI]

Wh per day. The effect of varying the size of the pv array and the battery bank in such systems on both hours and so on. This paper explores the effect of different sizes of battery bank and photovoltaic of battery size and photovoltaic array. The study is addressed to loads in the small community range

374

pv land use | OpenEI Community  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop,SaveWhiskey Flatshydro Home Water Home Jweers'suser Home Developer

375

AlGaAs/GaAs photovoltaic converters for high power narrowband radiation  

SciTech Connect (OSTI)

AlGaAs/GaAs-based laser power PV converters intended for operation with high-power (up to 100 W/cm{sup 2}) radiation were fabricated by LPE and MOCVD techniques. Monochromatic (? = 809 nm) conversion efficiency up to 60% was measured at cells with back surface field and low (x = 0.2) Al concentration 'window'. Modules with a voltage of 4 V and the efficiency of 56% were designed and fabricated.

Khvostikov, Vladimir; Kalyuzhnyy, Nikolay; Mintairov, Sergey; Potapovich, Nataliia; Shvarts, Maxim; Sorokina, Svetlana; Andreev, Viacheslav [Ioffe Physical-Technical Institute, 26 Polytechnicheskaya, St. Petersburg, 194021 (Russian Federation); Luque, Antonio [Ioffe Physical-Technical Institute, 26 Polytechnicheskaya, St. Petersburg, 194021, Russia and Instituto de Energia Solar, Universidad Politecnica de Madrid, Madrid (Spain)

2014-09-26T23:59:59.000Z

376

Solar Photovoltaic Economic Development: Building and Growing a Local PV Industry, August 2011 (Book)  

SciTech Connect (OSTI)

The U.S. photovoltaic (PV) industry is forecast to grow, and it represents an opportunity for economic development and job creation in communities throughout the United States. This report helps U.S. cities evaluate economic opportunities in the PV industry. It serves as a guide for local economic development offices in evaluating their community?s competitiveness in the solar PV industry, assessing the viability of solar PV development goals, and developing strategies for recruiting and retaining PV companies to their areas.

Not Available

2011-08-01T23:59:59.000Z

377

Uniform flux dish concentrators for photovoltaic application  

SciTech Connect (OSTI)

Researchers at the National Renewable Energy Laboratory (NREL) have designed a unique and innovative molded dish concentrator capable of producing a uniform flux profile on a flat target plane. Concentration levels of 100--200 suns, which are uniform over an area of several square inches, can be directly achieved for collection apertures of a reasonable size ({approximately}1.5-m diameter). Such performance would be immediately applicable to photovoltaic (PV) use. Economic concerns have shown that the proposed approach would be less expensive thatn Fresnel lens concepts or other dish concentrator designs that require complicated and costly receivers to mix the flux to obtain a uniform distribution. 12 refs.

Jorgensen, G; Wendelin, T

1992-05-01T23:59:59.000Z

378

PV Manufacturing R&D Project Status and Accomplishments Under 'In-Line Diagnostics and Intelligent Processing' and 'Yield, Durability and Reliability'  

SciTech Connect (OSTI)

The PV Manufacturing R&D (PVMR&D) Project conducts cost-shared research and development programs with U.S. PV industry partners. There are currently two active industry partnership activities. 'In-line Diagnostics and Intelligent Processing', launched in 2002, supports development of new in-line diagnostics and monitoring with real-time feedback for optimal process control and increased yield in the fabrication of PV modules, systems, and other system components. 'Yield, Durability and Reliability', launched in late 2004, supports enhancement of PV module, system component, and complete system reliability in high-volume manufacturing. A second key undertaking of the PVMR&D Project is the collection and analysis of module production cost-capacity metrics for the U.S. PV industry. In the period from 1992 through 2005, the average module manufacturing cost in 2005 dollars fell 54% (5.7% annualized) to $2.73/Wp, and the capacity increased 18.5-fold (25% annualized) to 251 MW/yr. An experience curve analysis gives progress ratios of 87% and 81%, respectively, for U.S. silicon and thin-film module production.

Friedman, D. J.; Mitchell, R. L.; Keyes, B. M.; Bower, W. I.; King, R.; Mazer, J. A.

2006-01-01T23:59:59.000Z

379

PV output smoothing using a battery and natural gas engine-generator.  

SciTech Connect (OSTI)

In some situations involving weak grids or high penetration scenarios, the variability of photovoltaic systems can affect the local electrical grid. In order to mitigate destabilizing effects of power fluctuations, an energy storage device or other controllable generation or load can be used. This paper describes the development of a controller for coordinated operation of a small gas engine-generator set (genset) and a battery for smoothing PV plant output. There are a number of benefits derived from using a traditional generation resource in combination with the battery; the variability of the photovoltaic system can be reduced to a specific level with a smaller battery and Power Conditioning System (PCS) and the lifetime of the battery can be extended. The controller was designed specifically for a PV/energy storage project (Prosperity) and a gas engine-generator (Mesa Del Sol) currently operating on the same feeder in Albuquerque, New Mexico. A number of smoothing simulations of the Prosperity PV were conducted using power data collected from the site. By adjusting the control parameters, tradeoffs between battery use and ramp rates could be tuned. A cost function was created to optimize the control in order to balance, in this example, the need to have low ramp rates with reducing battery size and operation. Simulations were performed for cases with only a genset or battery, and with and without coordinated control between the genset and battery, e.g., without the communication link between sites or during a communication failure. The degree of smoothing without coordinated control did not change significantly because the battery dominated the smoothing response. It is anticipated that this work will be followed by a field demonstration in the near future.

Johnson, Jay; Ellis, Abraham; Denda, Atsushi [Shimizu Corporation; Morino, Kimio [Shimizu Corporation; Shinji, Takao [Tokyo Gas Co., Ltd.; Ogata, Takao [Tokyo Gas Co., Ltd.; Tadokoro, Masayuki [Tokyo Gas Co., Ltd.

2013-02-01T23:59:59.000Z

380

Quantify Degradation Rates and Mechanisms of PV Modules and Systems Installed in Florida Through Comprehensive Experimental and Theoretical Analysis (Poster)  

SciTech Connect (OSTI)

The economic viability of photovoltaic (PV) technologies is inextricably tied to both the electrical performance and degradation rate of the PV systems, which are the generators of electrical power in PV systems. Over the past 15 years, performance data have been collected on numerous PV systems installed throughout the state of Florida and will be presented.

Sorloaica-Hickman, N.; Davis, K.; Kurtz, S.; Jordan, D.

2011-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

PG&E Plans for 500 MW of PV  

Broader source: Energy.gov [DOE]

PG&E has developed a plan to install 500 MW of PV by the year 2015. The plan calls for 250 MW to be acquired through Power Purchase Agreements (PPA) and the other 250 MW to be purchased and owned by the utility. PG&E presented the plan at a public forum on April 27, 2009. A copy of the power point presentation is attached.

382

Stochastic PV performance/reliability model : preview of alpha version.  

SciTech Connect (OSTI)

Problem Statement: (1) Uncertainties in PV system performance and reliability impact business decisions - Project cost and financing estimates, Pricing service contracts and guarantees, Developing deployment and O&M strategies; (2) Understanding and reducing these uncertainties will help make the PV industry more competitive (3) Performance has typically been estimated without much attention to reliability of components; and (4) Tools are needed to assess all inputs to the value proposition (e.g., LCOE, cash flow, reputation, etc.). Goals and objectives are: (1) Develop a stochastic simulation model (in GoldSim) that can represent PV system performance as a function of system design, weather, reliability, and O&M policies; (2) Evaluate performance for an example system to quantify sources of uncertainty and identify dominant parameters via a sensitivity study; and (3) Example System - 1 inverter, 225 kW DC Array latitude tilt (90 strings of 12 modules {l_brace}1080 modules{r_brace}), Weather from Tucumcari, NM (TMY2 with annual uncertainty).

Stein, Joshua S.; Miller, Steven P.

2010-03-01T23:59:59.000Z

383

Performance of a multifunctional PV/T hybrid solar window  

SciTech Connect (OSTI)

A building-integrated multifunctional PV/T solar window has been developed and evaluated. It is constructed of PV cells laminated on solar absorbers placed in a window behind the glazing. To reduce the cost of the solar electricity, tiltable reflectors have been introduced in the construction to focus radiation onto the solar cells. The reflectors render the possibility of controlling the amount of radiation transmitted into the building. The insulated reflectors also reduce the thermal losses through the window. A model for simulation of the electric and hot water production was developed. The model can perform yearly energy simulations where different features such as shading of the cells or effects of the glazing can be included or excluded. The simulation can be run with the reflectors in an active, up right, position or in a passive, horizontal, position. The simulation program was calibrated against measurements on a prototype solar window placed in Lund in the south of Sweden and against a solar window built into a single family house, Solgaarden, in Aelvkarleoe in the central part of Sweden. The results from the simulation shows that the solar window annually produces about 35% more electric energy per unit cell area compared to a vertical flat PV module. (author)

Davidsson, Henrik; Perers, Bengt; Karlsson, Bjoern [Energy and Building Design, Lund University, P.O. Box 118, SE 221 00 Lund (Sweden)

2010-03-15T23:59:59.000Z

384

Exploring the Economic Value of EPAct 2005's PV Tax Credits  

SciTech Connect (OSTI)

This CESA - LBNL Case Study examines how much economic value do new and expanded federal tax credits really provide to PV system purchasers, and what implications might they hold for state/utility PV grant programs. The report begins with a discussion of the taxability of PV grants and their interaction with federal credits, as this issue significantly affects the analysis that follows. We then calculate the incremental value of EPAct's new and expanded credits for PV systems of different sizes, and owned by different types of entities. The report concludes with a discussion of potential implications for purchasers of PV systems, as well as for administrators of state/utility PV programs. The market for grid-connected photovoltaics (PV) in the US has grown dramatically in recent years, driven in large part by PV grant or 'buy-down' programs in California, New Jersey, and many other states. The recent announcement of a new 11-year, $3.2 billion PV program in California suggests that state policy will continue to drive even faster growth over the next decade. Federal policy has also played a role, primarily by providing commercial PV systems access to tax benefits, including accelerated depreciation (5-year MACRS schedule) and a business energy investment tax credit (ITC). Since the signing of the Energy Policy Act of 2005 (EPAct) on August 8, the federal government has begun to play a much more significant role in supporting both commercial and residential PV systems. Specifically, EPAct increased the federal ITC for commercial PV systems from 10% to 30% of system costs, and also created a new 30% ITC (capped at $2000) for residential solar systems. Both changes went into effect on January 1, 2006, for an initial period of two years, and in late 2006 were extended for an additional year. Unless extended further, the new residential ITC will expire, and the 30% commercial ITC will revert back to 10%, on January 1, 2009. How much economic value do these new and expanded federal tax credits really provide to PV system purchasers? And what implications might they hold for state/utility PV grant programs? Using a generic (i.e., non-state-specific) cash flow model, this report explores these questions.1 We begin with a discussion of the taxability of PV grants and their interaction with federal credits, as this issue significantly affects the analysis that follows. We then calculate the incremental value of EPAct's new and expanded credits for PV systems of different sizes, and owned by different types of entities. We conclude with a discussion of potential implications for purchasers of PV systems, as well as for administrators of state/utility PV programs.

Bolinger, Mark A; Wiser, Ryan; Ing, Edwin

2009-08-01T23:59:59.000Z

385

Operation of Concentrating Solar Power Plants in the Western Wind and Solar Integration Phase 2 Study  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study (WWSIS) explores various aspects of the challenges and impacts of integrating large amounts of wind and solar energy into the electric power system of the West. The phase 2 study (WWSIS-2) is one of the first to include dispatchable concentrating solar power (CSP) with thermal energy storage (TES) in multiple scenarios of renewable penetration and mix. As a result, it provides unique insights into CSP plant operation, grid benefits, and how CSP operation and configuration may need to change under scenarios of increased renewable penetration. Examination of the WWSIS-2 results indicates that in all scenarios, CSP plants with TES provides firm system capacity, reducing the net demand and the need for conventional thermal capacity. The plants also reduced demand during periods of short-duration, high ramping requirements that often require use of lower efficiency peaking units. Changes in CSP operation are driven largely by the presence of other solar generation, particularly PV. Use of storage by the CSP plants increases in the higher solar scenarios, with operation of the plant often shifted to later in the day. CSP operation also becomes more variable, including more frequent starts. Finally, CSP output is often very low during the day in scenarios with significant PV, which helps decrease overall renewable curtailment (over-generation). However, the configuration studied is likely not optimal for High Solar Scenario implying further analysis of CSP plant configuration is needed to understand its role in enabling high renewable scenarios in the Western United States.

Denholm, P.; Brinkman, G.; Lew, D.; Hummon, M.

2014-05-01T23:59:59.000Z

386

High PID Resistant Cross-Linked Encapsulnt Based on Polyolefin...  

Broader source: Energy.gov (indexed) [DOE]

on Polyolefin SOLAR ASCE High PID Resistant Cross-Linked Encapsulnt Based on Polyolefin SOLAR ASCE Presented at the PV Module Reliability Workshop, February 26 - 27 2013, Golden,...

387

Project Profile: Development and Productization of High-Efficiency...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Low-Cost Building-Integrated PV Shingles Using Monocrystalline Silicon Thin-Film Solar Cells Project Profile: Development and Productization of High-Efficiency, Low-Cost...

388

Simulation of a concentrating PV/thermal collector using TRNSYS J.S. Coventry  

E-Print Network [OSTI]

for Sustainable Energy Systems Australian National University Canberra 0200 ACT AUSTRALIA Telephone: +61 02 6125, in particular heating, cooling and domestic hot water applications (Solar Energy Laboratory, 2000). TRNSYS equations describing the temperature dependent energy flow between the collector and surroundings. The CHAPS

389

A 40KW ROOF MOUNTED PV THERMAL CONCENTRATOR SYSTEM J.F.H. Smeltink1  

E-Print Network [OSTI]

3 Centre for Sustainable Energy Systems, Australian National University, Canberra, A.C.T. 0200, Australia email: 1 John.Smeltink@anu.edu.au, 2 Andrew.Blakers@anu.edu.au, 3 Joe.Coventry@anu.edu.au ABSTRACT: The Australian National University, Centre for Sustainable Energy Systems (ANU-CSES) has developed a photovoltaic

390

Potential of Securitization in Solar PV Finance  

SciTech Connect (OSTI)

This report aims to demonstrate, hypothetically and at a high level, what volumes of solar deployment could be supported given solar industry access to the capital markets in the form of security issuance. Securitization is not anticipated to replace tax equity in the near- to mid-term, but it could provide an additional source of funds that would be comparatively inexpensive and could reduce the weighted average cost of capital for a given solar project or portfolio. Thus, the potential to securitize solar assets and seek financing in the capital markets could help to sustain the solar industry when the investment tax credit (ITC) -- one of the federal incentives that has leveraged billions of dollars of private capital in the solar industry -- drops from 30% to 10% at the close of 2016. The report offers analysis on the size of the U.S. third-party financed solar market, as well as on the volumes (in MW) of solar asset origination possible through a $100 million securitization fund (assuming no overcollateralization). It also provides data on the size of the relevant securities markets and how the solar asset class may fit into these markets.

Lowder, T.; Mendelsohn, M.

2013-12-01T23:59:59.000Z

391

Validation of classical density-dependent solute transport theory for stable, high-concentration-gradient brine displacements in  

E-Print Network [OSTI]

-concentration-gradient brine displacements in coarse and medium sands S.J. Watson a,1 , D.A. Barry a,1 , R.J. Schotting b,*, S.M. Hassanizadeh b a School of Civil and Environmental Engineering, Contaminated Land Assessment and Remediation by a brine solution, under either constant head or constant volume flux conditions. The experimental data

Hassanizadeh, S. Majid

392

Ozone production rate and hydrocarbon reactivity in 5 urban areas: A cause of high ozone concentration in Houston  

E-Print Network [OSTI]

petrochemical complexes in the world. As a consequence the concentration of O3 in the Houston metropolitan area are ubiquitous in urban areas, the major source categories being on and off-road vehicles, power plants from nearby petrochemical facili- ties. A comparison between Houston and 4 other cities (Nashville, TN

393

www.iaei.org November . December 2014 IAEI NEWS 1110 IAEI NEWS November . December 2014 www.iaei.org PERSPECTIVES ON PV |  

E-Print Network [OSTI]

1500 volts. And, standalone, off grid PV systems and utility- interactive PV systems with battery.iaei.org PERSPECTIVES ON PV | Safety First -- for the Inspector Photovoltaic (PV) power systems are generally in and local code requirements. A thorough inspection of a PV system will ensure that those requirements have

Johnson, Eric E.

394

PV Supply Chain and Cross-Cutting Technologies: Upcoming Funding Opportunity  

SciTech Connect (OSTI)

Summarizes the Solar Program's upcoming funding opportunity, called PV Supply Chain and Cross-Cutting Technologies, which is expected to be open by the end of October 2008.

Not Available

2008-10-01T23:59:59.000Z

395

Financing Solar PV at Government Sites with PPAs and Public Debt...  

Broader source: Energy.gov (indexed) [DOE]

state and local governmental agencies have employed one of two models to deploy solar photovoltaic (PV) projects: (1) self-ownership (financed through a variety of means)...

396

U.S. Aims for Zero-Energy: Support for PV on New Homes  

E-Print Network [OSTI]

for Clean Energy or Green Building Projects. Competitiveclean energy or green building projects. In Massachusetts,projects with PV and other green building features. And in

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

397

Designing PV Incentive Programs to Promote System Performance: A Review of Current Practice  

E-Print Network [OSTI]

communication with New York State Energy Research andSolar Pioneer Program New York Energy $mart PV IncentivePower Authority (LIPA) New York State Energy Research and

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

398

Financing Solar PV at Government Sites with PPAs and Public Debt...  

Broader source: Energy.gov (indexed) [DOE]

Solar PV at Government Sites with PPAs and Public Debt Overview of financing solar photovoltaics at government sties with power purchase agreements and public debt. Author:...

399

Community Renewable Energy Success Stories Webinar: Developing PV Projects with RFPs and PPAs (text version)  

Office of Energy Efficiency and Renewable Energy (EERE)

Below is the text version of the webinar titled "Developing PV Projects with RFPS and PPAS," originally presented on January 15, 2013.

400

Shaking Up the Residential PV Market: Implications of Recent Changes to the ITC  

E-Print Network [OSTI]

E NERGY Shaking Up the Residential PV Market: Implicationsthe Revised Residential Credit ..ITC (capped at $2,000) for residential solar systems. Both

Bolinger, Mark

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Modeling Metal Fatigue As a Key Step in PV Module Life Time Prediction (Presentation)  

SciTech Connect (OSTI)

This presentation covers modeling metal fatigue as a key step in photovoltaic (PV) module lifetime predictions. Described are time-dependent and time-independent case studies.

Bosco, N.

2012-02-01T23:59:59.000Z

402

Defining a Technical Basis for Confidence in PV Investments - A Pathway to Service Life Prediction (Presentation)  

SciTech Connect (OSTI)

Four levels of accelerated test standards for PV modules are described in the context of how the community can most quickly begin using these.

Kurtz, S.; Wohlgemuth, J.; Kempe, M.; Bosco, N.; Hacke, P.; Jordan, D.; Miller, D.

2013-09-01T23:59:59.000Z

403

The Economic Value of PV and Net Metering to Residential Customers in California  

E-Print Network [OSTI]

incentives under the California Solar Initiative takeRates Undermine Californiaís Solar Photovoltaic Subsidies? ĒSolar PV and Retail Rate DesignĒ, Unpublished draft report for the California

Darghouth, Naim

2010-01-01T23:59:59.000Z

404

THE SOLARIZE GUIDEBOOK: A community guide to collective purchasing of residential PV systems  

E-Print Network [OSTI]

THE SOLARIZE GUIDEBOOK: A community guide to collective purchasing of residential PV systems #12 and Sustainability partnered with neighborhood coalition offices,

405

Delamination Failures in Long-Term Field Aged PV Modules from...  

Office of Environmental Management (EM)

More Documents & Publications Thermal Cycling Combined with Dynamic Mechanical Load: Preliminary Report Failure and Degradation Modes of PV Modules in a Hot Dry...

406

Failure and Degradation Modes of PV Modules in a Hot Dry Climate...  

Office of Environmental Management (EM)

More Documents & Publications Thermal Cycling Combined with Dynamic Mechanical Load: Preliminary Report Delamination Failures in Long-Term Field Aged PV Modules...

407

September 16 ESTAP Webinar: Optimizing the Benefits of a PV with...  

Office of Environmental Management (EM)

(PV) storage system with a battery. This webinar will be introduced by Dr. Imre Gyuk, Energy Storage Program Manager in the Office of Electricity Delivery and Energy...

408

Pyranometers and Reference Cells: Part 2: What Makes the Most Sense for PV Power Plants?; Preprint  

SciTech Connect (OSTI)

As described in Part 1 of this two-part series, thermopile pyranometers and photovoltaic (PV) reference cells can both be used to measure irradiance; however, there are subtle differences between the data that are obtained. This two-part article explores some implications of uncertainty and subtleties of accurately measuring PV efficiency in the field. Part 2 of the series shows how reference cells can be used to more confidently predict PV performance, but how this could best be accomplished if historic irradiance data could be available in PV-technology-specific formats.

Meydbray, J.; Riley, E.; Dunn, L.; Emery, K.; Kurtz, S.

2012-10-01T23:59:59.000Z

409

Precursor Report of Data Needs and Recommended Practices for PV Plant Availability Operations and Maintenance Reporting.  

SciTech Connect (OSTI)

Characterizing the factors that affect reliability of a photovoltaic (PV) power plant is an important aspect of optimal asset management. This document describes the many factors that affect operation and maintenance (O&M) of a PV plant, identifies the data necessary to quantify those factors, and describes how data might be used by O&M service providers and others in the PV industry. This document lays out data needs from perspectives of reliability, availability, and key performance indicators and is intended to be a precursor for standardizing terminology and data reporting, which will improve data sharing, analysis, and ultimately PV plant performance.

Hill, Roger R.; Klise, Geoffrey Taylor; John Balfour, John R Balfour, High Performance PV

2015-01-01T23:59:59.000Z

410

U.S. Aims for Zero-Energy: Support for PV on New Homes  

E-Print Network [OSTI]

Investigation of Photovoltaic Cost Trends in California. Ēphotovoltaic (PV) adoption, new homes have a number of attractive attributes. Homebuyers can easily roll the cost

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

411

Property Tax Assessments as a Finance Vehicle for Residential PV Installations: Opportunities and Potential Limitations  

E-Print Network [OSTI]

interest PV loan programs: a residential solar investmentsolar ITC, it is important to evaluate the financial attractiveness of this specific type of loan

Bolinger, Mark

2008-01-01T23:59:59.000Z

412

Designing PV Incentive Programs to Promote Performance: A Review of Current Practice  

E-Print Network [OSTI]

based on the actual energy production of the PV system overof estimated annual energy production, expressed either onto maximize annual energy production. Although some programs

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2007-01-01T23:59:59.000Z

413

Measurement uncertainty analysis techniques applied to PV performance measurements  

SciTech Connect (OSTI)

The purpose of this presentation is to provide a brief introduction to measurement uncertainty analysis, outline how it is done, and illustrate uncertainty analysis with examples drawn from the PV field, with particular emphasis toward its use in PV performance measurements. The uncertainty information we know and state concerning a PV performance measurement or a module test result determines, to a significant extent, the value and quality of that result. What is measurement uncertainty analysis? It is an outgrowth of what has commonly been called error analysis. But uncertainty analysis, a more recent development, gives greater insight into measurement processes and tests, experiments, or calibration results. Uncertainty analysis gives us an estimate of the I interval about a measured value or an experiment`s final result within which we believe the true value of that quantity will lie. Why should we take the time to perform an uncertainty analysis? A rigorous measurement uncertainty analysis: Increases the credibility and value of research results; allows comparisons of results from different labs; helps improve experiment design and identifies where changes are needed to achieve stated objectives (through use of the pre-test analysis); plays a significant role in validating measurements and experimental results, and in demonstrating (through the post-test analysis) that valid data have been acquired; reduces the risk of making erroneous decisions; demonstrates quality assurance and quality control measures have been accomplished; define Valid Data as data having known and documented paths of: Origin, including theory; measurements; traceability to measurement standards; computations; uncertainty analysis of results.

Wells, C.

1992-10-01T23:59:59.000Z

414

Defect Band Luminescence Intensity Reversal as Related to Application of Anti-Reflection Coating on mc-Si PV Cells: Preprint  

SciTech Connect (OSTI)

Photoluminescence (PL) imaging is widely used to identify defective regions within mc-Si PV cells. Recent PL imaging investigations of defect band luminescence (DBL) in mc-Si have revealed a perplexing phenomenon. Namely, the reversal of the DBL intensity in various regions of mc-Si PV material upon the application of a SiNx:H anti-reflective coating (ARC). Regions with low DBL intensity before ARC application often exhibit high DBL intensity afterwards, and the converse is also true. PL imaging alone cannot explain this effect. We have used high resolution cathodoluminescence (CL) spectroscopy and electron beam induced current (EBIC) techniques to elucidate the origin of the DBL intensity reversal. Multiple sub-bandgap energy levels were identified that change in peak position and intensity upon the application of the ARC. Using this data, in addition to EBIC contrast information, we provide an explanation for the DBL intensity reversal based on the interaction of the detected energy levels with the SiNx:H ARC application. Multiple investigations have suggested that this is a global problem for mc-Si PV cells. Our results have the potential to provide mc-Si PV producers a pathway to increased efficiencies through defect mitigation strategies.

Guthrey, H.; Johnston, S.; Yan, F.; Gorman, B.; Al-Jassim, M.

2012-06-01T23:59:59.000Z

415

The effect of sandstorms on PV arrays and components  

SciTech Connect (OSTI)

Photovoltaic (PV) systems deployed in desert areas are exposed to wind-blown particles during most of their lifetimes. Here I describe the characteristics of wind-blown particles and with their effect on exposed surfaces. I provide insights for use in array design to minimize the effects of exposure and keep system costs as low as possible. Finally, I present some data describing the exposure of polymer-encapsulated arrays to both field and laboratory wind-blown sand environments, and I present evidence that an encapsulated or ``soft`` array has a higher abrasion resistance and, therefore, a much higher probability of surviving a severe sand environment.

Thornton, J.P.

1992-03-01T23:59:59.000Z

416

The effect of sandstorms on PV arrays and components  

SciTech Connect (OSTI)

Photovoltaic (PV) systems deployed in desert areas are exposed to wind-blown particles during most of their lifetimes. Here I describe the characteristics of wind-blown particles and with their effect on exposed surfaces. I provide insights for use in array design to minimize the effects of exposure and keep system costs as low as possible. Finally, I present some data describing the exposure of polymer-encapsulated arrays to both field and laboratory wind-blown sand environments, and I present evidence that an encapsulated or soft'' array has a higher abrasion resistance and, therefore, a much higher probability of surviving a severe sand environment.

Thornton, J P

1992-03-01T23:59:59.000Z

417

PV vs. Solar Water Heating- Simple Solar Payback  

Broader source: Energy.gov [DOE]

Solar energy systems hang their hats on payback. Financial payback is as tangible as money in your bank account, while other types of paybackólike environmental externalitiesóare not usually calculated in dollars. Thereís no doubt that photovoltaic (PV) and solar hot water (SHW) systems will pay you back. Maybe not as quickly as youíd like, but all systems will significantly offset their cost over their lifetimes. Here weíll try to answer: Which system will give the quickest return on investment (ROI)?

418

Geothermal, Energy Efficiency, and Solar PV Opportunities at Nissan USE  

E-Print Network [OSTI]

Geothermal, Energy Efficiency, and Solar PV Opportunities at Nissan USA May 21st, 2014 Robinson Ford Justin Ong Jake Reeder Vikram Sridar Rica Zhang ESL-IE-14-05-04 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New... Orleans, LA. May 20-23, 2014 Carbon Goal is Driving Innovation ESL-IE-14-05-04 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 Research Areas Geothermal Solar Photovoltaics EE Verification ESL...

Ford, R.; Ong, J.; Reeder, J.; Sridar, V.; Zhang, R.

2014-01-01T23:59:59.000Z

419

PV Performance and Reliability Validation Capabilities at Sandia National Laboratories  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSalesOE0000652 Srivastava, WSUEnergyPV Performance and

420

PV Validation and Bankability Workshop | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSalesOE0000652 Srivastava, WSUEnergyPV Performance andPVPV

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Sandia National Laboratories: 2013 PV Performance Modeling Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromisingStoriesSANDIA1MedicalClimateECEnergy2013O&M WorkshopPV

422

Shanghai JTU PV Technology Co Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty Ltd Jump to: navigation, search|Sewaren,Shanghai JTU PV Technology Co Ltd Jump

423

Zhejiang Cineng PV Science Technology Co Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperative JumpWilliamsonWoodsonCounty is aYoakumYu EnergyZeZhejiang Cineng PV

424

Sandia National Laboratories: PV Paper Published in IEEE Transactions on  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNoLong RangePILSResourcesPV

425

Sandia National Laboratories: PV arc-fault detection research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-SaltReliability PV Systems ReliabilityWorkshops PVPV

426

Sandia National Laboratories: PV Plant Performance Technical Briefing  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducationStationCSP Resources On SeptemberNuclearSPIDERSPublished in PV

427

Sandia National Laboratories: Sandian Presents on PV Failure Analysis at  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmitted for US PatentOperational Energy atPartnershipOffice ofEuropean PV

428

Tianfu PV Guangxian Co Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978) |Thrall, Texas:Thurmont,Thurston,Tianfu PV

429

Sandia National Laboratories: 2013 PV Systems Symposium Details  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0 ResourceAwardsSafeguards andSan$0.06 per09 Archives3O&M3 PV

430

EC PVSEC, Glasgow, May 2000 EFFICIENT 20-50 SUN CONCENTRATOR CELLS  

E-Print Network [OSTI]

for Sustainable Energy Systems Australian National University, 0200, Australia andrew.blakers@anu.edu.au ABSTRACT concentration system. It comprises two-axis sun-tracking parabolic glass mirrors and a receiver with solar cells. INTRODUCTION Concentrator systems have a number of important advantages over conventional PV systems, the main

431

Dispersed concentration of high-tech jobs in the new economy : the paradox of new information and communication technologies  

E-Print Network [OSTI]

More high-tech firms are conducting their business over long distances due to the use of new information and communication technologies (ICT). However, regional scientists articulate that geographic proximity is still ...

Kang, Myoung-Gu, 1970-

2006-01-01T23:59:59.000Z

432

Evaluation of asbestos dust concentration in discharge air from a high-velocity low-volume vacuum system  

E-Print Network [OSTI]

of high energy particles through polycarbonates) were selected because they have a very smooth surface which causes the fi bers to be easily distinguished under the scanning electron microscope (SEM). The results obtained by Beckett indicate...

Daniel, Steven Hall

1977-01-01T23:59:59.000Z

433

Method of particle trajectory recognition in particle flows of high particle concentration using a candidate trajectory tree process with variable search areas  

DOE Patents [OSTI]

The application relates to particle trajectory recognition from a Centroid Population comprised of Centroids having an (x, y, t) or (x, y, f) coordinate. The method is applicable to visualization and measurement of particle flow fields of high particle. In one embodiment, the centroids are generated from particle images recorded on camera frames. The application encompasses digital computer systems and distribution mediums implementing the method disclosed and is particularly applicable to recognizing trajectories of particles in particle flows of high particle concentration. The method accomplishes trajectory recognition by forming Candidate Trajectory Trees and repeated searches at varying Search Velocities, such that initial search areas are set to a minimum size in order to recognize only the slowest, least accelerating particles which produce higher local concentrations. When a trajectory is recognized, the centroids in that trajectory are removed from consideration in future searches.

Shaffer, Franklin D.

2013-03-12T23:59:59.000Z

434

SOLAR ENERGY (conditionally accepted 1/2010) QUANTIFYING PV POWER OUTPUT VARIABILITY  

E-Print Network [OSTI]

SOLAR ENERGY (conditionally accepted 1/2010) QUANTIFYING PV POWER OUTPUT VARIABILITY Thomas E create major problems that will require major mitigation efforts. #12;SOLAR ENERGY (conditionally industry believe it could constrain the penetration of gridconnected PV. The U.S. Department of Energy

Perez, Richard R.

435

2 IAEI NEWS November. December 2012 www.iaei.org pv systems in unusual locations  

E-Print Network [OSTI]

the circulating pump. The combination of a PV- powered pump with a solar collector works well since bright sun they be permit- ted and inspected? Here are some examples of such systems. Electric Gate Openers PV-powered at night and during cloudy weather. Normally the prod- ucts are sold as a kit and installed by the building

Johnson, Eric E.

436

Energy and Society (ER100/PP184/ER200/PP284) Topics: PV, Wind, environmental justice  

E-Print Network [OSTI]

Energy and Society (ER100/PP184/ER200/PP284) Topics: PV, Wind, environmental justice Due Nov. 21 [ER200/PP284] - 1 - 1. Comparing PV costs across the US [24 points] In this question we are going to compare the costs of generating electricity using solar energy in different parts of the United States. a

Kammen, Daniel M.

437

On the Impact of Partial Shading on PV Output Power DEZSO SERA YAHIA BAGHZOUZ  

E-Print Network [OSTI]

On the Impact of Partial Shading on PV Output Power DEZSO SERA YAHIA BAGHZOUZ Institute of Energy the inflation adjusted cost of PV energy has declined by roughly by a factor of 2 over the same time period [3 power capability. However, the relative amount of such degradation in energy production cannot

Sera, Dezso

438

Environmental impacts of large-scale grid-connected ground-mounted PV installations  

E-Print Network [OSTI]

deployment and solar energy use are developing rapidly in Europe. In particular, Austria, Switzerland the higher external environmental costs of PV compared to those of nuclear energy and natural-gas-fuel power,6]. They highlighted the photovoltaic potential for a low carbon energy supply and the environmental benefits of PV

Paris-Sud XI, Université de

439

Chapter III-2: Standards, Calibration and Testing of PV Modules and Solar Cells  

SciTech Connect (OSTI)

This chapter covers common PV measurement techniques and shows how potential problems and sources of error are minimized through the development and use of common standards. Measurement uncertainty, however, remains a problem for some types of PV cells, and tests continue to be developed to address these issues.

Osterwald, C. R.

2012-01-01T23:59:59.000Z

440

Moving to a Higher Level for PV Reliability through Comprehensive Standards Based on Solid Science (Presentation)  

SciTech Connect (OSTI)

PV reliability is a challenging topic because of the desired long life of PV modules, the diversity of use environments and the pressure on companies to rapidly reduce their costs. This presentation describes the challenges, examples of failure mechanisms that we know or don't know how to test for, and how a scientific approach is being used to establish international standards.

Kurtz, S.

2014-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Data Science Study Protocols for Investigating Lifetime and Degradation of PV Technology Systems  

E-Print Network [OSTI]

of Epidemiology and Biostatistics, Case Western Reserve University Abstract -- The reliability of photovoltaic (PV. Index Terms -- photovoltaic systems, regression analysis, enter- prise resource planning, knowledge management I. INTRODUCTION AND BACKGROUND The reliability of PV technology systems is of the utmost im

Rollins, Andrew M.

442

FEMP Webcast: O&M Best Practices for Small-Scale PV Systems  

Broader source: Energy.gov [DOE]

Hosted by the Federal Energy Management Program (FEMP), this seminar covers operations and maintenance (O&M) best practices for photovoltaic (PV) systems of 100 kilowatt or less, including planning for a PV O&M scope of work and maintenance procedures to keep the system operating at optimal capacity.

443

Why Are Residential PV Prices in Germany So Much Lower Than in the United States?  

E-Print Network [OSTI]

Why Are Residential PV Prices in Germany So Much Lower Than in the United States? A Scoping is significantly lower in Germany than in the U.S., due primarily to differences in "soft" costs ­ But relatively consultant data relevant to the cost structure of residential PV in Germany · Focus is the pre

444

Optimal Design of Hybrid Energy System with PV/ Wind Turbine/ Storage: A Case Study  

E-Print Network [OSTI]

with photovoltaic (PV) arrays, wind turbines, and battery storage is designed based on empirical weather and load with renewable resources such as solar and wind power, supplemented with battery storage in a case study. One ­ the size of PV arrays, the number of wind turbines and the capacity of battery storage ­ that limit

Low, Steven H.

445

Literature Review of the Effects of UV Exposure on PV Modules  

Broader source: Energy.gov [DOE]

This PowerPoint presentation, originally presented at the NREL 2013 PV Module Reliability Workshop on Feb. 26-27, 2013 in Denver, CO, presents the literature review of the effects of prolonged UV exposure of PV modules, with a particular emphasis on UV exposure testing using artificial light sources, including fluorescent, Xenon, and metal halide lamps.

446

World Renewable Energy Congress 2011 Sweden Photovoltaic Technology (PV) 8-11 May 2011, Linkping, Sweden  

E-Print Network [OSTI]

or (2) wood supports, and mobile structures with (3) single-axis trackers or (4) dual-axis trackers performance. Mobile PV installations with dual-axis trackers show the largest impact potential on ecosystem installations 1. Introduction PV systems deployment and solar energy use are developing rapidly in Europe

Paris-Sud XI, Université de

447

Energy Management Strategy for Commercial Buildings Integrating PV and Storage Systems  

E-Print Network [OSTI]

Energy Management Strategy for Commercial Buildings Integrating PV and Storage Systems He ZHANG1 by using the solution proposed. Keywords: Photovoltaic (PV) systems, fuzzy logic, storage system, energy connected to the power network and associated to photovoltaic and storage system. Some energy management

Paris-Sud XI, Université de

448

Hawaii Natural Energy Institute installs PV systems at public schools Pacific Business News  

E-Print Network [OSTI]

of the inverters, which convert direct current or DC power generated by the PV panels into alternating current in Ewa Beach and at Kawaikini New Century Public Charter School in Lihue on Kauai. "These installations the performance of traditional and emerging PV materials and inverter technologies," Institute Director Richard

449

ePOWER Seminar AC solar cells: A new breed of PV power generation  

E-Print Network [OSTI]

ePOWER Seminar AC solar cells: A new breed of PV power generation Professor Faisal Khan Assistant dc output which needs to be processed and inverted for ac applications. Using a modern manufacturing facility, PV panels could be mass produced without any apparent issues. Unfortunately, power converters

Abolmaesumi, Purang

450

Modeling and Simulation of Solar PV Arrays under Changing Illumination Conditions  

E-Print Network [OSTI]

the amount of electric power that may be generated from the solar panel at time of use. To be specificModeling and Simulation of Solar PV Arrays under Changing Illumination Conditions Dzung D Nguyen shadows (a passing cloud) on the output power of solar PV arrays. Each solar array is composed of a matrix

Lehman, Brad

451

Rooftop PV Potential for Scotland: Preliminary Analysis Professor Gareth Harrison and Dr Lucy Cradden  

E-Print Network [OSTI]

. Uncertainties An analysis of UK solar potential is based on a similar approach using aggregate land use data in suitable area to allow for shading and other effects. The solar PV potential per square metre of roof has was used to determine annual output for standard PV arrays in each location. It found annual production

Painter, Kevin

452

THE INTEGRATION AND CONTROL OF MULTIFUNCTIONAL STATIONARY PV-BATTERY SYSTEMS IN SMART DISTRIBUTION GRID  

E-Print Network [OSTI]

) in presence of photovoltaic (PV) panel on the view of techno economic optimal sizing taking the considerationTHE INTEGRATION AND CONTROL OF MULTIFUNCTIONAL STATIONARY PV-BATTERY SYSTEMS IN SMART DISTRIBUTION stationary battery energy storage systems (BESS) in the public low-voltage distribution grid in order

Berning, Torsten

453

PV Grounding Sponsored by the Photovoltaic Systems Assistance Center, Sandia National Laboratories  

E-Print Network [OSTI]

PV Grounding Continued John Wiles Sponsored by the Photovoltaic Systems Assistance Center, Sandia methods will be covered. The subject is quite complex. Grounding photovoltaic (PV) systems with both AC-grounding conductors in other DC circuits and in AC circuits are sized according to Table 250.122 in the NEC

Johnson, Eric E.

454

Fraunhofer-Center fr Silizium-Photovoltaik CSP INTERPRETATION OF CELL FRACTURE IN PV  

E-Print Network [OSTI]

¬© Fraunhofer-Center f√ľr Silizium-Photovoltaik CSP INTERPRETATION OF CELL FRACTURE IN PV MODULES stability of PV modules" #12;¬© Fraunhofer-Center f√ľr Silizium-Photovoltaik CSP Agenda Motivation #12;¬© Fraunhofer-Center f√ľr Silizium-Photovoltaik CSP Motivation & Background Thermo

455

2008 European PV Conference, Valencia, Spain COMPARISON OF SOLAR RADIATION FORECASTS FOR THE USA  

E-Print Network [OSTI]

2008 European PV Conference, Valencia, Spain COMPARISON OF SOLAR RADIATION FORECASTS FOR THE USA J models 1 INTRODUCTION Solar radiation and PV production forecasts are becoming increasingly important/) three teams of experts are benchmarking their solar radiation forecast against ground truth data

Perez, Richard R.

456

Genome-Wide Identification of Transcriptional Start Sites in the Plant Pathogen Pseudomonas syringae pv. tomato  

E-Print Network [OSTI]

identified 59-ends of transcripts for the plant pathogen Pseudomonas syringae pv. tomato str. DC3000-Wide Identification of Transcriptional Start Sites in the Plant Pathogen Pseudomonas syringae pv. tomato str. DC3000Genome-Wide Identification of Transcriptional Start Sites in the Plant Pathogen Pseudomonas

Myers, Chris

457

Battery Management for Grid-Connected PV Systems with a Battery  

E-Print Network [OSTI]

}@usc.edu ABSTRACT Photovoltaic (PV) power generation systems are one of the most promising renewable power sources-connected systems, Photovoltaic power, Electricity bill 1. INTRODUCTION The number and capacity of photovoltaic (PV for customers to save enough money with lower monthly electricity bills to compensate the initial cost

Pedram, Massoud

458

An evaluation of membrane materials for the treatment of highly concentrated suspended salt solutions in reverse osmosis and nanofiltration processes for desalination  

E-Print Network [OSTI]

of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2006 Major Subject: Civil Engineering AN EVALUATION OF MEMBRANE MATERIALS FOR THE TREATMENT OF HIGHLY... CONCENTRATED SUSPENDED SALT SOLUTIONS IN REVERSE OSMOSIS AND NANOFILTRATION PROCESSES FOR DESALINATION A Thesis by TRENTON WHITING HUGHES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

Hughes, Trenton Whiting

2009-05-15T23:59:59.000Z

459

Introduction of Break-Out Session 2 of the 2011 International PV Module Quality Assurance Forum(Presentation)  

SciTech Connect (OSTI)

This presentation outlines the goals and specific tasks of break-out session 2 of the 2011 International PV Module Quality Assurance Forum, along with a review of accelerated stress tests used for photovoltaics (PV).

Wohlgemuth, J.; Kurtz, S.; Sample, T.; Yamamichi, M.

2011-07-01T23:59:59.000Z

460

Designing PV Incentive Programs to Promote Performance: A Review of Current Practice in the U.S.  

E-Print Network [OSTI]

Washington Renewable Energy Production Incentives Cash Backincentives for customer- sited PV: Non-Residential Renewable Energy (Renewable Energy Program SolarGenerations Solar Pioneer Program New York Energy $mart PV Incentive

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Manufacturing of High-Efficiency Bi-Facial Tandem Concentrator Solar Cells: February 20, 2009--August 20, 2010  

SciTech Connect (OSTI)

Spire Semiconductor made concentrator photovoltaic (CPV) cells using a new bi-facial growth process and met both main program goals: a) 42.5% efficiency 500X (AM1.5D, 25C, 100mW/cm2); and b) Ready to supply at least 3MW/year of such cells at end of program. We explored a unique simple fabrication process to make a N/P 3-junction InGaP/GaAs/InGaAs tandem cells . First, the InGaAs bottom cell is grown on the back of a GaAs wafer. The wafers are then loaded into a cassette, spin-rinsed to remove particles, dipped in dilute NH4OH and spin-dried. The wafers are then removed from the cassette loaded the reactor for GaAs middle and InGaP top cell growth on the opposite wafer face (bi-facial growth). By making the epitaxial growth process a bit more complex, we are able to avoid more complex processing (such as large area wafer bonding or epitaxial liftoff) used in the inverted metamorphic (IMM) approach to make similar tandem stacks. We believe the yield is improved compared to an IMM process. After bi-facial epigrowth, standard III-V cell steps (back metal, photolithography for front grid, cap etch, AR coat, dice) are used in the remainder of the process.

Wojtczuk , S.

2011-06-01T23:59:59.000Z

462

Concentrating collectors  

SciTech Connect (OSTI)

Selected specifications from sixteen concentrating collector manufacturers are tabulated. Eleven are linear parabolic trough collectors, and the others include slats, cylindrical trough, linear Fresnel lens, parabolic cylindrical Fresnel lens, and two point focus parabolic dish collectors. Also included is a brief discussion of the operating temperatures and other design considerations for concentrating collectors. (LEW)

Not Available

1981-06-01T23:59:59.000Z

463

falls into this category if the PV DC conductors penetrate the house. Although batteries are not power generators,  

E-Print Network [OSTI]

falls into this category if the PV DC conductors penetrate the house. Although batteries-grid, battery-based PV systems or grid-tied (utility-interactive) PV systems with battery backup. In situations are not power generators, they can source energy, so a battery disconnect might also fall into this category

Johnson, Eric E.

464

A Hierarchical Control Algorithm for Managing Electrical Energy Storage Systems in Homes Equipped with PV Power Generation  

E-Print Network [OSTI]

use their PV-based generation and controllable storage devices for peak shaving on their power demand controller should possess the ability of forecasting future PV-based power generation and load power consumption profiles for better performance. In this paper we present novel PV power generation and load power

Pedram, Massoud

465

Features of a fully renewable US electricity system: Optimized mixes of wind and solar PV and transmission grid extensions  

E-Print Network [OSTI]

in order to follow the de- mand, wind and solar PV power output is largely determined by weather conditions Large-scale integration of renewable power generation Wind power generation Solar PV power generation Power transmission a b s t r a c t A future energy system is likely to rely heavily on wind and solar PV

Jacobson, Mark

466

www.iaei.org July.August 2005 IAEI NEWS 83 GROUNDING PV AND SYSTEMS FINE STRANDED CONDUCTORS  

E-Print Network [OSTI]

with single inverters sized below about 10 kW. Figure 1 shows the dc grounding for a PV system as spelled out electrode) bare or insulated A series of articles on photovoltaic (PV) power systems and the Nationalwww.iaei.org July.August 2005 IAEI NEWS 83 GROUNDING PV AND SYSTEMS FINE STRANDED CONDUCTORS

Johnson, Eric E.

467

The inverter is a major component of photovoltaic (PV) systems either autonomous or grid connected. It affects the  

E-Print Network [OSTI]

and a variety of photovoltaic modules. The PV systems range in size from 2.5 to 3.6 kilowatts. The purposeABSTRACT The inverter is a major component of photovoltaic (PV) systems either autonomous or grid. INTRODUCTION For any grid tied photovoltaic (PV) system, the inverter is the essential piece of equipment

Oregon, University of

468

Plug and Play Components for Building Integrated PV Systems, Phase II Final Report, 20 February 2003 - 31 May 2007  

SciTech Connect (OSTI)

Progress by Schott Solar, Inc. under NREL's PV Manufacturing R&D Project. Details progress on meter-interconnect device; free-standing mounting system; dark I-V curves to unearth problems with PV module strings; new 34-V version of ASE-300 PV module; and updated source-circuit protectors.

Rowell, D.

2008-04-01T23:59:59.000Z

469

Packaging Materials and Design for Improved PV Module Reliability  

SciTech Connect (OSTI)

A number of candidate alternative encapsulant and soft backsheet materials have been evaluated in terms of their suitability for photovoltaic (PV) module packaging applications. Relevant properties, including peel strength as a function of damp heat exposure and permeability, have been measured. Based on these tests, promising new encapsulants with adhesion-promoting primers have been identified that result in improved properties. Test results for backsheets provided by industry and prepared at the National Renewable Energy Laboratory (NREL) have suggested strategies to achieve significantly improved products. The ability of glass/glass and glass/breathable backsheet constructions laminated with various encapsulant and/or edge seal materials to protect thin-film aluminum coatings deposited onto glass substrates was assessed. Glass/glass laminate constructions can trap harmful compounds that catalyze moisture-driven corrosion of the aluminum. Constructions with breathable backsheets allow higher rates of moisture ingress, but also allow egress of deleterious substances that can result in decreased corrosion.

Jorgensen, G.; Terwilliger, K.; Kempe, M.; Pern, J.; Glick, S.; del Cueto, J.; Kennedy, C.; McMahon, T.

2005-01-01T23:59:59.000Z

470

Fundamentals of PV Efficiency: Limits for Light Absorption  

E-Print Network [OSTI]

A simple thermodynamic argument related to a (weakly absorbing) finite dielectric slab illuminated by sunlight- originally suggested by Yablonovich- leads to the conclusion that the absorption in a dielectric can at best be increased by a factor 4n2. Therefore, the absorption in these materials is always imperfect; the Shockley-Queisser limit can be achieved only asymptotically. In this paper, we make the connection between the degradation in efficiency and the Yablonovich limit explicit and re-derive the 4n2 limit by intuitive geometrical arguments based on Snell's law and elementary rules of probability. Remarkably, the re-derivation suggests strategies of breaking the traditional limit and improving PV efficiency by enhanced light absorption.

M. Ryyan Khan; Xufeng Wang; Muhammad A. Alam

2012-12-13T23:59:59.000Z

471

Final Technical Report - Photovoltaics for You (PV4You) Program  

SciTech Connect (OSTI)

In September 2000, the Interstate Renewable Energy Council (IREC) began its 5-year work on contract # DE-FGO3-00SF22116, the Photovoltaics for You (PV4You) Project. The objective was to develop and distribute information on photovoltaics and to educate key stakeholder groups including state government agencies, local government offices, consumer representative agencies, school officials and students, and Million Solar Roofs Partnerships. In addition, the project was to identify barriers to the deployment of photovoltaics and implement strategies to overcome them. Information dissemination and education was accomplished by publishing newsletters; creating a base of information, guides, and models on the www.irecusa.org and the www.millionsolarroofs.org web sites; convening workshops and seminars; engaging multiple stakeholders; and widening the solar network to include new consumers and decision makers. Two major web sites were maintained throughout the project cycle. The www.irecusa.org web site housed dedicated pages for Connecting to the Grid, Schools Going Solar, Community Outreach, and Certification & Training. The www.millionsolarroofs.org web site was created to serve the MSR Partnerships with news, interviews, key documents, and resource material. Through the course of this grant, the Interstate Renewable Energy Council has been supporting the Department of Energy?s solar energy program goals by providing the Department with expertise services for their network of city, state, and community stakeholders. IREC has been the leading force at the state and federal levels regarding net metering and interconnection policy for photovoltaic systems. The principal goal and benefit of the interconnection and net metering work is to lower both barriers and cost for the installation of PV. IREC typically plays a leadership role among small generator stakeholders and has come to be relied upon for its expertise by industry and regulators. IREC also took a leadership position in developing quality and competency standards for solar professionals and for training programs ? critical components to bring the solar industry into step with other recognized craft labor forces. IREC?s objective was to provide consumer assurances and assist the states and the solar industry in building a strong and qualified workforce. IREC?s Schools Going Solar Clearinghouse provided channels of information to educate students, teachers, parents and the community at large about the benefits of solar energy. Solar school projects enhance science and math education while creating an initial entry market for domestic PV. And, IREC?s community and outreach network got the right information out to capture the interest and met the needs of different audiences and reached groups that weren?t traditionally part of the solar community. IREC?s PV4You project was effective because it resulted in reduced costs through easier interconnection and better net metering agreements and by raising the competency standards for solar practitioners. The project provided ways to eliminate barriers and constraints by providing technical assistance, offering model agreements based on industry consensus that were used by state and local decision makers. And, the project increased public acceptance by providing information, news and guidelines for different audiences.

Weissman, J.M.; Sherwood, L.; Pulaski, J.; Cook, C.; Kalland, S.; Haynes, J.

2005-08-14T23:59:59.000Z

472

Acceleration Factors for Damp-Heat and HAST with High Voltage...  

Broader source: Energy.gov (indexed) [DOE]

High PID Resistant Cross-Linked Encapsulnt Based on Polyolefin SOLAR ASCE Comparing Accelerated Testing and Outdoor Exposure Agenda for the PV Module Reliability Workshop,...

473

Transparent building-integrated PV modules. Phase 1: Comprehensive report  

SciTech Connect (OSTI)

This Comprehensive Report encompasses the activities that have been undertaken by Kiss + Cathcart, Architects, in conjunction with Energy Photovoltaics, Incorporated (EPV), to develop a flexible patterning system for thin-film photovoltaic (PV) modules for building applications. There are two basic methods for increasing transparency/light transmission by means of patterning the PV film: widening existing scribe lines, or scribing a second series of lines perpendicular to the first. These methods can yield essentially any degree of light transmission, but both result in visible patterns of light and dark on the panel surface. A third proposed method is to burn a grid of dots through the films, independent of the normal cell scribing. This method has the potential to produce a light-transmitting panel with no visible pattern. Ornamental patterns at larger scales can be created using combinations of these techniques. Kiss + Cathcart, Architects, in conjunction with EPV are currently developing a complementary process for the large-scale lamination of thin-film PVs, which enables building integrated (BIPV) modules to be produced in sizes up to 48 in. x 96 in. Flexible laser patterning will be used for three main purposes, all intended to broaden the appeal of the product to the building sector: To create semitransparent thin-film modules for skylights, and in some applications, for vision glazing.; to create patterns for ornamental effects. This application is similar to fritted glass, which is used for shading, visual screening, graphics, and other purposes; and to allow BIPV modules to be fabricated in various sizes and shapes with maximum control over electrical characteristics.

NONE

1998-09-28T23:59:59.000Z

474

High Hydrogen Concentrations Detected In The Underground Vaults For RH-TRU Waste At INEEL Compared With Calculated Values Using The INEEL-Developed Computer Code  

SciTech Connect (OSTI)

About 700 remote-handled transuranic (RH-TRU) waste drums are stored in about 144 underground vaults at the Intermediate-Level Transuranic Storage Facility at the Idaho National Environmental and Engineering Laboratoryís (INEELís) Radioactive Waste Management Complex (RWMC). These drums were shipped to the INEEL from 1976 through 1996. During recent monitoring, concentrations of hydrogen were found to be in excess of lower explosive limits. The hydrogen concentration in one vault was detected to be as high as 18% (by volume). This condition required evaluation of the safety basis for the facility. The INEEL has developed a computer program to estimate the hydrogen gas generation as a function of time and diffusion through a series of layers (volumes), with a maximum five layers plus a sink/environment. The program solves the first-order diffusion equations as a function of time. The current version of the code is more flexible in terms of user input. The program allows the user to estimate hydrogen concentrations in the different layers of a configuration and then change the configuration after a given time; e.g.; installation of a filter on an unvented drum or placed in a vault or in a shipping cask. The code has been used to predict vault concentrations and to identify potential problems during retrieval and aboveground storage. The code has generally predicted higher hydrogen concentrations than the measured values, particularly for the drums older than 20 year, which could be due to uncertainty and conservative assumptions in drum age, heat generation rate, hydrogen generation rate, Geff, and diffusion rates through the layers.

Rajiv Bhatt; Soli Khericha

2005-02-01T23:59:59.000Z

475

Designing PV Incentive Programs to Promote Performance: A Reviewof Current Practice in the U.S.  

SciTech Connect (OSTI)

In the U.S., the increasing financial support for customer-sited photovoltaic (PV) systems provided through publicly-funded incentive programs has heightened concerns about the long-term performance of these systems. Given the barriers that customers face to ensuring that their PV systems perform well, and the responsibility that PV incentive programs bear to ensure that public funds are prudently spent, these programs should, and often do, play a critical role in addressing PV system performance. To provide a point of reference for assessing the current state of the art, and to inform program design efforts going forward, we examine the approaches to encouraging PV system performance used by 32 prominent PV incentive programs in the U.S. We identify eight general strategies or groups of related strategies that these programs have used to address factors that affect performance, and describe key implementation details. Based on this review, we then offer recommendations for how PV incentive programs can be effectively designed to mitigate potential performance issues.

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-10-06T23:59:59.000Z

476

Literature Review of Uncertainty of Analysis Methods (PV F-Chart Program), Report to the Texas Commission on Environmental Quality  

E-Print Network [OSTI]

-792)....................................................................................................... 11 6.2 Example 2: Calculations of Monthly Electrical Output and Solar Fraction for a PV Power System Array Using the PV F-Chart Program of DOS Version 3.1. 14 7 References...: Calculations of Monthly Electrical Output and Solar Fraction for a PV Power System Array Using the PV F-Chart Program of DOS Version 3.1. This second example shows the selections of system, collector type and other parameters that are needed for the PV F...

Haberl, J. S.; Cho, S.

2004-01-01T23:59:59.000Z

477

Accelerated Stress Testing of Hydrocarbon-Based Encapsulants for Medium-Concentration CPV Applications  

SciTech Connect (OSTI)

Concentrating photovoltaic (CPV) systems have great potential to reduce photovoltaic (PV) electricity costs because of the relatively low cost of optical components as compared to PV cells. A transparent polymeric material is used to optically couple the PV cell to optical components and is thus exposed to the concentrated light source at elevated temperatures. In this work polymeric encapsulant materials are positioned close to a Xenon arc lamp to expose them to ultraviolet radiation (UV) that is about 42 times as intense as sunlight. Furthermore, different glass types are used as filters to modify the spectral distribution of light in the UV range. A strong sensitivity of non-silicone-based encapsulants to light below ~350 nm is demonstrated. Of all the materials examined in this study, the polydimethyl silicone samples performed the best. The next best material was an ionomer which maintained optical transmission but became photo-oxidized where exposed to the atmosphere.

Kempe, M. D.; Moricone, T. J.; Kilkenny, M.; Zhang, J. Z.

2011-02-01T23:59:59.000Z

478

User's Manual for Data for Validating Models for PV Module Performance  

SciTech Connect (OSTI)

This user's manual describes performance data measured for flat-plate photovoltaic (PV) modules installed in Cocoa, Florida, Eugene, Oregon, and Golden, Colorado. The data include PV module current-voltage curves and associated meteorological data for approximately one-year periods. These publicly available data are intended to facilitate the validation of existing models for predicting the performance of PV modules, and for the development of new and improved models. For comparing different modeling approaches, using these public data will provide transparency and more meaningful comparisons of the relative benefits.

Marion, W.; Anderberg, A.; Deline, C.; Glick, S.; Muller, M.; Perrin, G.; Rodriguez, J.; Rummel, S.; Terwilliger, K.; Silverman, T. J.

2014-04-01T23:59:59.000Z

479

Development of a Visual Inspection Checklist for Evaluation of Fielded PV Module Condition (Presentation)  

SciTech Connect (OSTI)

A visual inspection checklist for the evaluation of fielded photovoltaic (PV) modules has been developed to facilitate collection of data describing the field performance of PV modules. The proposed inspection checklist consists of 14 sections, each documenting the appearance or properties of a part of the module. This tool has been evaluated through the inspection of over 60 PV modules produced by more than 20 manufacturers and fielded at two different sites for varying periods of time. Aggregated data from a single data collection tool such as this checklist has the potential to enable longitudinal studies of module condition over time, technology evolution, and field location for the enhancement of module reliability models.

Packard, C. E; Wohlgemuth, J. H.; Kurtz, S. R.

2012-03-01T23:59:59.000Z

480

Overview of Scientific Issues Involved in Selection of Polymers for PV Applications  

SciTech Connect (OSTI)

Encapsulant materials used in photovoltaic (PV) modules serve multiple purposes. They physically hold components in place, provide electrical insulation, reduce moisture ingress, optically couple superstrate materials (e.g., glass) to PV cells, protect components from mechanical stress by mechanically decoupling components via strain relief, and protect materials from corrosion. To do this, encapsulants must adhere well to all surfaces, remain compliant, and transmit light after exposure to temperature, humidity, and UV radiation histories. Here, a brief review of some of the polymeric materials under consideration for PV applications is provided, with an explanation of some of their advantages and disadvantages.

Kempe, M.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high concentration pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Overview of Scientific Issues Involved in Selection of Polymers for PV Applications: Preprint  

SciTech Connect (OSTI)

Encapsulant materials used in photovoltaic (PV) modules serve multiple purposes. They physically hold components in place, provide electrical insulation, reduce moisture ingress, optically couple superstrate materials (e.g., glass) to PV cells, protect components from mechanical stress by mechanically de-coupling components via strain relief, and protect materials from corrosion. To do this, encapsulants must adhere well to all surfaces, remain compliant, and transmit light after exposure to temperature, humidity, and UV radiation histories. Here, a brief review of some of the polymeric materials under consideration for PV applications is provided, with an explanation of some of their advantages and disadvantages.

Kempe, M.

2011-07-01T23:59:59.000Z

482

Exploring the Economic Value of EPAct 2005's PV Tax Credits  

SciTech Connect (OSTI)

The market for grid-connected photovoltaics (PV) in the US has grown dramatically in recent years, driven in large part by PV grant or ''buy-down'' programs in California, New Jersey, and many other states. The recent announcement of a new 11-year, $3.2 billion PV program in California suggests that state policy will continue to drive even faster growth over the next decade. Federal policy has also played a role, primarily by providing commercial PV systems access to tax benefits, including accelerated depreciation (5-year MACRS schedule) and a business energy investment tax credit (ITC). With the signing of the Energy Policy Act of 2005 (EPAct) on August 8, the federal government is poised to play a much more significant future role in supporting both commercial and residential PV systems. Specifically, EPAct increased the federal ITC for commercial PV systems from 10% to 30% of system costs, and also created a new 30% ITC (capped at $2000) for residential solar systems. Both changes went into effect on January 1, 2006, and--absent an extension (for which the solar industry has already begun lobbying)--will last for a period of two years: the new residential ITC will expire, and the 30% commercial ITC will revert back to 10%, on January 1, 2008. How much economic value do these new and expanded federal tax credits really provide to PV system purchasers? And what implications might they hold for state/utility PV grant programs? Using a generic (i.e., non-state-specific) cash flow model, this report explores these questions. We begin with a discussion of the taxability of PV grants and their interaction with federal credits, as this issue significantly affects the analysis that follows. We then calculate the incremental value of EPAct's new and expanded credits for PV systems of different sizes, and owned by different types of entities. We conclude with a discussion of potential implications for purchasers of PV systems, as well as for administrators of state/utility PV programs.

Bolinger, Mark; Wiser, Ryan; Ing, Edwin

2006-03-28T23:59:59.000Z

483

Photochemistry of 9,10-anthraquinone-2-sulfonate in solution. Part 2. Effects of inorganic anions: quenching vs. radical formation at moderate and high anion concentrations  

SciTech Connect (OSTI)

The chemical aspects of the interactions between excited 9,10-anthraquinone-2-sulfonate (AQS) and various inorganic anions are examined. The anions which quench triplet AQS can be divided into two groups: Cl/sup -/, Br/sup -/, I/sup -/ and NCS/sup -/ (group I) photoreduce AQS to AQS/sup -/ radical anion only at concentrations higher than that required for complete triplet quenching. The effect increases with concentration and passes through a maximum, with highest quantum yields of radical formation reaching approx. 1 for Cl/sup -/ and NCS/sup -/; on the other hand, NO/sub 2//sup -/, SO/sub 3//sup 2 -/, and N/sub 3//sup -/ (group II) give AQS/sup -/ in parallel to triplet quenching. The nature of the high-concentration effect shown by group I is analyzed. Some results obtained with mixtures of anions support the conclusion that triplet AQS is also responsible for this effect, and it is suggested that triple exciplexes of the type /sup 3/(AQS/sup -/.X/sub 2//sup -/) are involved. With this view and the recently proposed intraradical spin-orbit-coupling (IRSOC) model, a quantitative interpretation of the results is presented.

Loeff, I.; Treinin, A.; Linschitz, H.

1984-10-11T23:59:59.000Z

484

Photochemistry of 9,10-anthraquinone-2-sulfonate in solution. Part II. Effects of inorganic anions; quenching vs. radical formation at moderate and high anion concentrations  

SciTech Connect (OSTI)

The chemical aspects of the interactions between excited 9, 10-anthraquinone-2-sulfonate (AQS) and various inorganic anions are examined. The anions which quench triplet AQS can be divided into two groups: Cl/sup -/, Br/sup -/, I/sup -/ and NCS/sup -/ (Group I) photoreduce the quinone to AQS/sup -/ only at concentrations higher than that required for complete triplet quenching. The effect increases with concentration and passes through a maximum with highest quantum yields of radical formation reaching approx. 1 for Cl/sup -/ and NCS/sup -/; NO/sub 2//sup -/, SO/sub 3//sup 2 -/ and N/sub 3//sup -/ (Group II) reduce AQS in parallel to triplet quenching. The nature of the high-concentration effect shown by Group I is analyzed. Some results obtained with mixtures of anions support the conclusion that triplet AQS is also responsible for this effect and it is suggested that triple exciplexes of the type /sup 3/(AQS/sup -/.X/sub 2//sup -/) are involved. With this view and the recently proposed intra-radical-spin-orbit-coupling (IRSOC) model, a quantitative interpretation of the results is presented.

Loeff, I.; Treinin, A.; Linschitz, H.

1983-12-30T23:59:59.000Z

485

The analysis of the factors effect on coalbed methane pool concentration and high-production -- The North China coalbed methane districts as an example  

SciTech Connect (OSTI)

The factors which affect coalbed methane (CBM) pool concentration and high-production based upon the exploration and research of the North China CBM districts are coal facies, coal rank and metamorphic types, structural features, the surrounding rocks and their thickness, and hydrogeological conditions. Coal facies, coal rank and their metamorphic types mainly affect the CBM forming characteristic, while the other factors effect the trap of CBM pool. The interaction of the above factors determines the petrophysics of coal reservoirs and extractability of CBM. The high-production areas where CBM pools develop well in North China CBM districts are sites which have a favorable coordination of the five factors. The poor-production areas where CBM pools are undeveloped in North China are caused by action of one or more unfavorable factors. Therefore the favorable factors coordination is the prerequisite in selecting sites for coalbed methane recovery.

Wang Shengwei; Zhang Ming; Zhuang Xiaoli

1997-12-31T23:59:59.000Z

486

Durability of Polymeric Encapsulation Materials for Concentrating Photovoltaic Systems (Presentation)  

SciTech Connect (OSTI)

Presented at the 7th International Conference on Concentrating Photovoltaic Systems (CPV-7), 4-6 April 2011, Las Vegas, Nevada. Many concentrating photovoltaic (CPV) systems use a polymeric encapsulant to couple an optical component and/or coverglass to the cell. In that location, the encapsulation improves the transmission of concentrated optical flux through interfaces(s) while protecting the cell from the environment. The durability of encapsulation materials, however, is not well established relative to the desired service life of 30 years. Therefore, we have initiated a screen test to identify the field-induced failure modes for a variety of popular PV encapsulation materials.

Miller, D. C.; Muller, M.; Kempe, M. D.; Araki, K.; Kennedy, C. E.; Kurtz, S. R.

2011-04-01T23:59:59.000Z

487

Shock initiation and detonation study on high concentration H2O2/H2O solutions using in-situ magnetic gauges  

SciTech Connect (OSTI)

Concentrated hydrogen peroxide (H{sub 2}O{sub 2}) has been known to detonate for many years. However, because of its reactivity and the difficulty in handling and confining it, along with the large critical diameter, few studies providing basic information about the initiation and detonation properties have been published. We are conducting a study to understand and quantify the initiation and detonation properties of highly concentrated H{sub 2}O{sub 2} using a gas-driven two-stage gun to produce well defined shock inputs. Multiple magnetic gauges are used to make in-situ measurements of the growth of reaction and subsequent detonation in the liquid. These experiments are designed to be one-dimensional to eliminate any difficulties that might be encountered with large critical diameters. Because of the concern of the reactivity of the H{sub 2}O{sub 2} with the confining materials, a remote loading system has been developed. The gun is pressurized, then the cell is filled and the experiment shot within less than three minutes. Several experiments have been completed on {approx}98 wt % H{sub 2}O{sub 2}/H{sub 2}O mixtures; homogeneous shock initiation behavior has been observed in the experiments where reaction is observed. The initial shock pressurizes and heats the mixture. After an induction time, a thermal explosion type reaction produces an evolving reactive wave that strengthens and eventually overdrives the first wave producing a detonation. From these experiments, we have determined unreacted Hugoniot points, times-to-detonation points that indicate low sensitivity (an input of 13.5 GPa produces detonation in 1 {micro}s compared to 9.5 GPa for neat nitromethane), and detonation velocities of high concentration H{sub 2}O{sub 2}/H{sub 2}O solutions of over 6.6 km/s.

Sheffield, Stephen A [Los Alamos National Laboratory; Dattelbaum, Dana M [Los Alamos National Laboratory; Stahl, David B [Los Alamos National Laboratory; Gibson, L Lee [Los Alamos National Laboratory; Bartram, Brian D [Los Alamos National Laboratory; Engelke, Ray [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

488

Multi-Objective Capacity Planning of a Pv-Wind-Diesel-Battery Hybrid Power System  

E-Print Network [OSTI]

A new solution methodology of the capacity design problem of a PV-Wind-Diesel-Battery Hybrid Power System (HPS) is presented. The problem is formulated as a Linear Programming (LP) model with two objectives: minimizing ...

Saif, A.

489

Improved Reliability of PV Modules with Lexan PC Sheet-Front...  

Broader source: Energy.gov (indexed) [DOE]

IMPROVED RELIABILITY OF PV MODULES WITH LEXAN(tm) (PC ) SHEET - FRONT SHEET NORYL(tm) (PPE) SHEET - BACK SHEET NORYL(tm) Sheet for back sheet application LEXAN(tm) sheet for front...

490

Non-Standard Physics and Nucleon Strangeness in Low-Energy PV Electron Scattering  

E-Print Network [OSTI]

Contributions from physics beyond the Standard Model, strange quarks in the nucleon, and nuclear structure effects to the left-right asymmetry measured in parity-violating (PV) electron scattering from $\

M. J. Musolf; T. W. Donnelly

1992-12-03T23:59:59.000Z

491

Is the hourly data I get from NREL's PV Watts program adjusted...  

Open Energy Info (EERE)

get from NREL's PV Watts program adjusted for daylight savings time. Home I take the hourly AC output numbers and apply them to a program I built that assigns a dollar value to the...

492

A methodology for optimal sizing of autonomous hybrid PV/wind system  

E-Print Network [OSTI]

mathematical models for characterizing PV module, wind generator and battery are proposed. The second step is obtained for a system comprising a 125 W photovoltaic modules, one wind generator (600 W) and storage

Boyer, Edmond

493

E-Print Network 3.0 - arboricola pv pruni Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Rates d) The Value of Net Metering 4. Policy... Motivation: To create a self-sustaining market, grid-connected PV may have to be competitive with retail Source: Lawrence...

494

Introduction of Break-Out Session at the International PV Module Quality Assurance Forum (Presentation)  

SciTech Connect (OSTI)

This presentation outlines review requirements for quality assurance (QA) rating systems, logical design of QA systems, and specific tasks for break-out session 1 of the 2011 International PV Module Quality Assurance Forum.

Kurtz, S.; Wohlgemuth, J.; Yamamichi, M.; Sample, T.

2011-07-01T23:59:59.000Z

495

E-Print Network 3.0 - alloy pv manufacturing Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

63 Beloin-Saint-Pierre, D., Blanc, I., Payet, J., Jacquin, P., Adra, N., Mayer, D., Environmental impact of PV systems: Effects of energy sources used in production of solar...

496

A Comparison of Key PV Backsheet and Module Properties from Fielded...  

Broader source: Energy.gov (indexed) [DOE]

of Key PV Backsheet and Module Properties from Fielded Module Exposures and Accelerated Test Conditions W. Gambogi 1 , O. Fu 2 , Y. Heta 3 , K. Hashimoto 3 , J. Kopchick 1...

497

Third Party Financing and Power Purchasing Agreements for Public Sector PV Projects  

Broader source: Energy.gov [DOE]

Provides information on third-party financing and Power Purchase Agreements for public sector PV projects presented at the TAP Web Seminar on May 27, 2009, includes economic and legal information.

498

New York City- Property Tax Abatement for Photovoltaic (PV) Equipment Expenditures  

Broader source: Energy.gov [DOE]

In August 2008 the State of New York enacted legislation allowing a property tax abatement for photovoltaic (PV) system expenditures made on buildings located in cities with a population of 1...

499

User Guide for PV Dynamic Model Simulation Written on PSCAD Platform  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

with a discussion of the basic PV inverter and the control philosophy adapted for a power electronics-based generator, which we then contrast to the control philosophy for a...

500

Analyzing and simulating the variability of solar irradiance and solar PV powerplants  

E-Print Network [OSTI]

dampen fluctuations in solar power output of the average ofa panelís solar conversion efficiency, power output can beQuantifying PV power Output Variability, Solar Energy, 84 (

Lave, Matthew S.

2012-01-01T23:59:59.000Z