Search Results - "Marion, Bill"

Measured and satellite-derived albedo data for estimating bifacial photovoltaic system performance by Marion, Bill

“…The albedo of the ground surface is an important factor in the cost-effectiveness of a bifacial photovoltaic (PV) system. To improve the availability of…”
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Analysis of irradiance models for bifacial PV modules by Hansen, Clifford W., Stein, Joshua S., Deline, Chris, MacAlpine, Sara, Marion, Bill, Asgharzadeh, Amir, Toor, Fatima

“…We describe and compare two methods for modeling irradiance on the back surface of rack-mounted bifacial PV modules: view factor models and ray-tracing…”
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Numerical method for angle-of-incidence correction factors for diffuse radiation incident photovoltaic modules by Marion, Bill

“…•Numerical method for angle-of-incidence correction factor for diffuse irradiances.•Results for sky, horizon, and ground-reflected radiation versus PV module…”
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Evaluation of clear-sky and satellite-derived irradiance data for determining the degradation of photovoltaic system performance by Marion, Bill

“…•Irradiance data from three methods evaluated for determining PV system degradation.•Best results for methods using clear-sky irradiance data and 10-year…”
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Evaluation of clear-sky and satellite-derived irradiance data for determining the degradation of photovoltaic system performance by Marion, Bill

“…Knowing the degradation in performance of a photovoltaic (PV) system over time is important for estimating the lifetime energy produced and the financial…”
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A model for deriving the direct normal and diffuse horizontal irradiance from the global tilted irradiance by Marion, Bill

“…•Model developed for deriving the direct irradiance from global tilted irradiance.•Analyzed model performance for Florida, Oregon, and Colorado…”
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Comparing standard translation methods for predicting photovoltaic energy production by Duck, Benjamin C., Fell, Christopher J., Marion, Bill, Emery, Keith

“…Translation equations underpin all predictive models for the energy output of photovoltaics in the outdoor environment. These equations translate the…”
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Photovoltaic system derived data for determining the solar resource and for modeling the performance of other photovoltaic systems by Marion, Bill, Smith, Benjamin

“…•Direct normal and diffuse horizontal irradiance derived from the PV system ac power.•Derived irradiances used to model the performance of other PV…”
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A model for deriving the direct normal and diffuse horizontal irradiance from the global tilted irradiance by Marion, Bill

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Albedo Data Sets for Bifacial PV Systems by Marion, Bill

“…For use by the PV and financial communities to better estimate the performance and to reduce the risk of bifacial PV systems, data sets of ground albedo and…”
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Clear Sky Irradiance Year-to-Year Variations and Trends by Marion, Bill

“…Solar radiation data for seven SURFRAD stations for the period 1996-2018 show an increase in irradiance under clear skies over the period, but the increase was…”
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PV field reliability status—Analysis of 100 000 solar systems by Jordan, Dirk C., Marion, Bill, Deline, Chris, Barnes, Teresa, Bolinger, Mark

“…In this study, we analyzed annual production data from 100 000 photovoltaic systems as well as comments relating to their performance and maintenance. Our…”
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Spectral Effects in Albedo and Rearside Irradiance Measurement for Bifacial Performance Estimation by Gostein, Michael, Marion, Bill, Stueve, Bill

“…We investigate the impact of spectral dependence of ground surface reflectivity on albedo and rearside irradiance measurements necessary for bifacial…”
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A Sensitivity Study of the Impact of Installation Parameters and System Configuration on the Performance of Bifacial PV Arrays by Asgharzadeh, Amir, Marion, Bill, Deline, Chris, Hansen, Clifford, Stein, Joshua S., Toor, Fatima

“…In this paper, we present the effect of installation parameters (tilt angle, height above ground, and albedo) on the bifacial gain and energy yield of three…”
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Assessment of Bifacial Photovoltaic Module Power Rating Methodologies—Inside and Out by Deline, Chris, MacAlpine, Sara, Marion, Bill, Toor, Fatima, Asgharzadeh, Amir, Stein, Joshua S.

“…One-sun power ratings for bifacial modules are currently undefined. This is partly because there is no standard definition of rear irradiance given 1000 W·m -2…”
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Low irradiance losses of photovoltaic modules by Mavromatakis, F., Vignola, F., Marion, B.

“…•The maximum power point power and the short circuit current are utilized to determine the relative efficiency of module.•High quality archival data from a…”
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Comparison of Bifacial Solar Irradiance Model Predictions With Field Validation by Pelaez, Silvana Ayala, Deline, Chris, MacAlpine, Sara M., Marion, Bill, Stein, Joshua S., Kostuk, Raymond K.

“…Models predicting rear irradiance for bifacial systems are critical to establish accurate estimates of energy yield. Here, we compare five published bifacial…”
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Measured and modeled photovoltaic system energy losses from snow for Colorado and Wisconsin locations by Marion, Bill, Schaefer, Robert, Caine, Holden, Sanchez, Gonzalo

“…•PV energy losses due to snow for six PV systems measured for winters of 2010–2011 and 2011–2012.•Measured monthly PV losses of up to 90%, annual losses from…”
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A Practical Irradiance Model for Bifacial PV Modules by Marion, Bill, MacAlpine, Sara, Deline, Chris, Asgharzadeh, Amir, Toor, Fatima, Riley, Daniel, Stein, Joshua, Hansen, Clifford

“…A model, suitable for a row or multiple rows of photovoltaic (PV) modules, is presented for estimating the backside irradiance for bifacial PV modules. The…”
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Influence of atmospheric variations on photovoltaic performance and modeling their effects for days with clear skies by Marion, B.

“…Although variation in photovoltaic (PV) performance is predominantly influenced by clouds, performance variations also exist for days with clear skies with…”
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