Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6186135
Y. Moon, S. Lee, Heuiseok Kang, K. Kang, Ki Young Kim, J. Hwang, Youngjune Cho
Electrical sintering of the front electrode for crystalline silicon solar cells was performed applying a constant DC current to the printed lines. Conducting lines were printed on glass substrate by a drop-on-demand (DOD) inkjet printer and silver nanoparticle ink. Specific resistance and microstructure of sintered silver lines and were measured with varying DC current. To find the relation between temperatue increase with changing applied cuurent and specific resistance, temperature elevation was also calculated. Sintering process finished within a few milliseconds. Increasing applied DC current, specific resistance decreased and grain size increased after sintering. Achieved minimum specific resistance is approximately 1.7 times higher than specific resistance of the bulk silver.
{"title":"Electrical sintering of inkjet-printed silver electrode for c-Si solar cells","authors":"Y. Moon, S. Lee, Heuiseok Kang, K. Kang, Ki Young Kim, J. Hwang, Youngjune Cho","doi":"10.1109/PVSC.2011.6186135","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6186135","url":null,"abstract":"Electrical sintering of the front electrode for crystalline silicon solar cells was performed applying a constant DC current to the printed lines. Conducting lines were printed on glass substrate by a drop-on-demand (DOD) inkjet printer and silver nanoparticle ink. Specific resistance and microstructure of sintered silver lines and were measured with varying DC current. To find the relation between temperatue increase with changing applied cuurent and specific resistance, temperature elevation was also calculated. Sintering process finished within a few milliseconds. Increasing applied DC current, specific resistance decreased and grain size increased after sintering. Achieved minimum specific resistance is approximately 1.7 times higher than specific resistance of the bulk silver.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115343121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6186205
Sunyoung Park, C. Champness, Z. Mi, I. Shih
To find low resistance metal contacts on p-type crystalline copper indium diselenide (CuInSe2), bilayers of metal contacts were deposited on p-type crystalline CuInSe2. The first metals were Ni, Pt, Se, and Te and the second metals were Au, Ag, Al, and Cu. It was found that the resistance reduced significantly when the surface was etched in a solution containing H2SO4 (1%, w/w) and CrO3 (1%, w/w). It was also confirmed that heat treatment often leads to increase contact resistance. The resistance was measured for over a period of 20 days to estimate the thermal stability of the metal contacts. It was observed that prolonged evacuation time before the metal deposition reduced the resistance.
{"title":"Metal contacts to p-type crystalline copper indium diselenide","authors":"Sunyoung Park, C. Champness, Z. Mi, I. Shih","doi":"10.1109/PVSC.2011.6186205","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6186205","url":null,"abstract":"To find low resistance metal contacts on p-type crystalline copper indium diselenide (CuInSe2), bilayers of metal contacts were deposited on p-type crystalline CuInSe2. The first metals were Ni, Pt, Se, and Te and the second metals were Au, Ag, Al, and Cu. It was found that the resistance reduced significantly when the surface was etched in a solution containing H2SO4 (1%, w/w) and CrO3 (1%, w/w). It was also confirmed that heat treatment often leads to increase contact resistance. The resistance was measured for over a period of 20 days to estimate the thermal stability of the metal contacts. It was observed that prolonged evacuation time before the metal deposition reduced the resistance.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123106168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6186076
Y. Kuang, K. V. D. van der Werf, Z. Houweling, M. Di Vece, R. Schropp
We report on the design and photovoltaic performance of nanostructured three dimensional (nano-3D) solar cells with ultrathin amorphous hydrogenated silicon (a-Si:H) absorber layers. Zinc oxide (ZnO) nanorods are employed as the building blocks for the nano-3D solar cells. The ZnO nanorods with controlled morphology are prepared by aqueous solution deposition at 80°C. The nanorod a-Si:H solar cells are realized by depositing n-i-p a-Si:H layers over Ag-coated ZnO nanorods. The photovoltaic performance of the nano-3D solar cells is experimentally demonstrated. With an ultrathin absorber layer of only 25 nm, an efficiency of 3.6% and a short-circuit current density of 8.3 mA/cm2 are obtained, significantly higher than values achieved for the planar or even the textured counterparts with a three times thicker (∼75 nm) a-Si:H absorber layer. By increasing the absorber layer thickness in the nano-3D solar cells from 25 nm to 75 nm, the efficiency improved from 3.6% to 4.1% and the short-circuit current density increased from 8.3 mA/cm2 to 13.3 mA/cm2. The orthogonalization of the light path and the carrier transport path plays an important role in these nano-3D devices.
{"title":"Design and photovoltaic performance of nanorod solar cells with amorphous silicon absorber layer thickness of only 25 nm","authors":"Y. Kuang, K. V. D. van der Werf, Z. Houweling, M. Di Vece, R. Schropp","doi":"10.1109/PVSC.2011.6186076","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6186076","url":null,"abstract":"We report on the design and photovoltaic performance of nanostructured three dimensional (nano-3D) solar cells with ultrathin amorphous hydrogenated silicon (a-Si:H) absorber layers. Zinc oxide (ZnO) nanorods are employed as the building blocks for the nano-3D solar cells. The ZnO nanorods with controlled morphology are prepared by aqueous solution deposition at 80°C. The nanorod a-Si:H solar cells are realized by depositing n-i-p a-Si:H layers over Ag-coated ZnO nanorods. The photovoltaic performance of the nano-3D solar cells is experimentally demonstrated. With an ultrathin absorber layer of only 25 nm, an efficiency of 3.6% and a short-circuit current density of 8.3 mA/cm2 are obtained, significantly higher than values achieved for the planar or even the textured counterparts with a three times thicker (∼75 nm) a-Si:H absorber layer. By increasing the absorber layer thickness in the nano-3D solar cells from 25 nm to 75 nm, the efficiency improved from 3.6% to 4.1% and the short-circuit current density increased from 8.3 mA/cm2 to 13.3 mA/cm2. The orthogonalization of the light path and the carrier transport path plays an important role in these nano-3D devices.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121789397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6185857
Kan‐Hua Lee, K. Barnham, B. Browne, J. P. Connolly, Jessica G. J. Adams, R. Airey, N. Ekins‐Daukes, M. Fuhrer, Victoria Rees, M. Lumb, A. Dobbin, M. Mazzer, J. Roberts, T. Tibbits
High efficiency quantum well GaAs solar cells have been successfully applied in commercial multijunction concentrator cells to increase the absorption in the infrared and provide variability of the absorption edge to optimise energy harvesting. Multiple quantum well (MQW) top cells can further improve the performance of multijunction solar cells since the absorption edge of top and middle subcells can be tuned with the MQWs to maximize the efficiency. Also, our simulations show that photon coupling resulting from the radiative dominance of the MQW top cell can make the multijunction cell less sensitive to variations in the incoming spectrum, thus further improving energy harvesting. New results on the characterisation of a novel MQW top cell will be presented along with electro- and photo-luminescence studies relevant to the photonic coupling.
{"title":"Multiple quantum well top cells for multijunction concentrator solar cells","authors":"Kan‐Hua Lee, K. Barnham, B. Browne, J. P. Connolly, Jessica G. J. Adams, R. Airey, N. Ekins‐Daukes, M. Fuhrer, Victoria Rees, M. Lumb, A. Dobbin, M. Mazzer, J. Roberts, T. Tibbits","doi":"10.1109/PVSC.2011.6185857","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6185857","url":null,"abstract":"High efficiency quantum well GaAs solar cells have been successfully applied in commercial multijunction concentrator cells to increase the absorption in the infrared and provide variability of the absorption edge to optimise energy harvesting. Multiple quantum well (MQW) top cells can further improve the performance of multijunction solar cells since the absorption edge of top and middle subcells can be tuned with the MQWs to maximize the efficiency. Also, our simulations show that photon coupling resulting from the radiative dominance of the MQW top cell can make the multijunction cell less sensitive to variations in the incoming spectrum, thus further improving energy harvesting. New results on the characterisation of a novel MQW top cell will be presented along with electro- and photo-luminescence studies relevant to the photonic coupling.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121820031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6185859
R. Walters, M. González, J. Tischler, M. Lumb, J. Meyer, I. Vurgaftman, J. Abell, M. Yakes, N. Ekins‐Daukes, J. Adams, N. Chan, P. Stavrinou, P. Jenkins
A design for a realistically achievable, multijunction solar cell based on all lattice-matched materials with >50% projected efficiencies under concentration is presented. Using quaternary materials such as InAlAsSb and InGaAlAs at stochiometries lattice-matched to InP substrates, direct bandgaps ranging from 0.74eV up to ∼1.8eV, ideal for solar energy conversion, can be achieved. In addition, multi-quantum well structures are used to reduce the band-gap further to <0.7 eV. A triple-junction (3J) solar cell using these materials is described, and in-depth modeling results are presented showing realistically achievable efficiencies of AM1.5D 500X of η ∼ 53% and AM0 1 Sun of η∼ 37%.
{"title":"Design of an achievable, all lattice-matched multijunction solar cell using InGaAlAsSb","authors":"R. Walters, M. González, J. Tischler, M. Lumb, J. Meyer, I. Vurgaftman, J. Abell, M. Yakes, N. Ekins‐Daukes, J. Adams, N. Chan, P. Stavrinou, P. Jenkins","doi":"10.1109/PVSC.2011.6185859","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6185859","url":null,"abstract":"A design for a realistically achievable, multijunction solar cell based on all lattice-matched materials with >50% projected efficiencies under concentration is presented. Using quaternary materials such as InAlAsSb and InGaAlAs at stochiometries lattice-matched to InP substrates, direct bandgaps ranging from 0.74eV up to ∼1.8eV, ideal for solar energy conversion, can be achieved. In addition, multi-quantum well structures are used to reduce the band-gap further to <0.7 eV. A triple-junction (3J) solar cell using these materials is described, and in-depth modeling results are presented showing realistically achievable efficiencies of AM1.5D 500X of η ∼ 53% and AM0 1 Sun of η∼ 37%.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115795474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6186105
M. Sakhuja, L. K. Verma, H. Yang, C. S. Bhatia, A. Danner
Incident irradiation on solar modules experiences reflection at the outermost air-glass interface which reduces overall power conversion efficiency, especially when the sun is near the horizon in fixed-mount modules without active tracking. Here, we present a non-lithographic fabrication process for creating vertical and tilted nanostructures directly in the packaging glass of solar modules. We investigate how the angle of the glass nanostructures affects the omnidirectional reception of solar insolation in an outdoor environment, and find up to a 0.5% increase in maximum module efficiency for vertical nanostructures at normal incidence. An increase in the omnidirectional reception of incoming light up to 70° is also observed for nanostructures tilted at an angle of 80° with respect to the glass substrate.
{"title":"Fabrication of tilted nanostructures for omnidirectional transmission in solar modules","authors":"M. Sakhuja, L. K. Verma, H. Yang, C. S. Bhatia, A. Danner","doi":"10.1109/PVSC.2011.6186105","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6186105","url":null,"abstract":"Incident irradiation on solar modules experiences reflection at the outermost air-glass interface which reduces overall power conversion efficiency, especially when the sun is near the horizon in fixed-mount modules without active tracking. Here, we present a non-lithographic fabrication process for creating vertical and tilted nanostructures directly in the packaging glass of solar modules. We investigate how the angle of the glass nanostructures affects the omnidirectional reception of solar insolation in an outdoor environment, and find up to a 0.5% increase in maximum module efficiency for vertical nanostructures at normal incidence. An increase in the omnidirectional reception of incoming light up to 70° is also observed for nanostructures tilted at an angle of 80° with respect to the glass substrate.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116863869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6185954
A. Boca, P. Blumenfeld, K. Crist, G. Flynn, J. Mccarty, P. Patel, C. Sarver, P. Sharps, R. Stall, M. Stan, C. Tourino
The NASA Solar Probe Plus (SPP) mission will fly into and study the Sun's corona, reaching as close as 8.5 solar radii from the surface of the Sun. Power generation for the spacecraft will be provided by two solar array wings, which are being designed and built by Johns Hopkins University Applied Physics Laboratory and Emcore Photovoltaics. SPP will get closer to the Sun than any previous mission, and the solar array will therefore need to operate reliably under unusually high irradiances, temperatures, and angles of incidence, a situation that introduces intriguing challenges for the array design. This paper presents an overview of the array-geometry optimization method we have developed, the goal of which is to allow for the most benign nominal operating conditions possible, given the mission requirements for minimum power generation and maximum heat dissipation. We also outline the engineering trade-offs associated with the available options for cell lay-down onto the panel, including the non-standard material choices necessary for optimal thermal, mechanical, optical and electrical performance and robustness of the array. We conclude by presenting the near-term test plan included in the SPP array-development program, and summarize the data from preliminary measurements performed to date.
{"title":"Array-design considerations for the Solar Probe Plus mission","authors":"A. Boca, P. Blumenfeld, K. Crist, G. Flynn, J. Mccarty, P. Patel, C. Sarver, P. Sharps, R. Stall, M. Stan, C. Tourino","doi":"10.1109/PVSC.2011.6185954","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6185954","url":null,"abstract":"The NASA Solar Probe Plus (SPP) mission will fly into and study the Sun's corona, reaching as close as 8.5 solar radii from the surface of the Sun. Power generation for the spacecraft will be provided by two solar array wings, which are being designed and built by Johns Hopkins University Applied Physics Laboratory and Emcore Photovoltaics. SPP will get closer to the Sun than any previous mission, and the solar array will therefore need to operate reliably under unusually high irradiances, temperatures, and angles of incidence, a situation that introduces intriguing challenges for the array design. This paper presents an overview of the array-geometry optimization method we have developed, the goal of which is to allow for the most benign nominal operating conditions possible, given the mission requirements for minimum power generation and maximum heat dissipation. We also outline the engineering trade-offs associated with the available options for cell lay-down onto the panel, including the non-standard material choices necessary for optimal thermal, mechanical, optical and electrical performance and robustness of the array. We conclude by presenting the near-term test plan included in the SPP array-development program, and summarize the data from preliminary measurements performed to date.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":" 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120832263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6186238
K. Leong, A. Gougam, B. Bahardoust, Wing Yin Kwong, T. Kosteski, D. Yeghikyan, S. Zukotynski, N. Kherani
The DC Saddle Field PECVD system was used to deposit hydrogenated amorphous silicon (a-Si:H) layers for high efficiency amorphous-crystalline silicon heterojunction (ACSHJ) solar cells. The plasma controlling parameters; including the chamber pressure, gas phase dopant concentration for the p-type a-Si:H (a-Si:H(p+)) emitter, and substrate temperature were varied. The substrate temperature was found to be a critical parameter for the deposition of intrinsic a-Si:H as epitaxial formation can occur with just a temperature increase of 10°C. The processing capabilities have been developed to construct ACSHJ solar cells with 15.5% conversion efficiency for a 4.2 cm2 area.
{"title":"Amorphous-crystalline silicon heterojunction solar cells formed by the DC saddle field PECVD system: A deposition parameter optimization","authors":"K. Leong, A. Gougam, B. Bahardoust, Wing Yin Kwong, T. Kosteski, D. Yeghikyan, S. Zukotynski, N. Kherani","doi":"10.1109/PVSC.2011.6186238","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6186238","url":null,"abstract":"The DC Saddle Field PECVD system was used to deposit hydrogenated amorphous silicon (a-Si:H) layers for high efficiency amorphous-crystalline silicon heterojunction (ACSHJ) solar cells. The plasma controlling parameters; including the chamber pressure, gas phase dopant concentration for the p-type a-Si:H (a-Si:H(p+)) emitter, and substrate temperature were varied. The substrate temperature was found to be a critical parameter for the deposition of intrinsic a-Si:H as epitaxial formation can occur with just a temperature increase of 10°C. The processing capabilities have been developed to construct ACSHJ solar cells with 15.5% conversion efficiency for a 4.2 cm2 area.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"10 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6186310
Y. M-Roshan, M. Moallem
In this paper, we present a robust controller for maximum power point tracking of a photovoltaic (PV) module that alleviates problems such as the speed of convergence and chattering commonly experienced in conventional controllers. To this end, we propose a control technique that is based on a modification of the incremental conductance algorithm by taking into consideration the pseudo-resistive input behavior of power electronic converter in the discontinuous conduction mode. The proposed method regulates the input resistance of a boost converter to a desired value determined by the PV characterisitics to achieve maximum power conversion, which can be extended to other types of converters such as buck and buck-boost. Simulation results indicate that the PV system working under the proposed controller can successfully track different maximum power points under rapidly changing atmospheric conditions. Comparative studies are provided using numerical simulations that illustrate improvements in using the proposed control scheme.
{"title":"Maximum power point tracking control using resistive input behavior of the power converter","authors":"Y. M-Roshan, M. Moallem","doi":"10.1109/PVSC.2011.6186310","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6186310","url":null,"abstract":"In this paper, we present a robust controller for maximum power point tracking of a photovoltaic (PV) module that alleviates problems such as the speed of convergence and chattering commonly experienced in conventional controllers. To this end, we propose a control technique that is based on a modification of the incremental conductance algorithm by taking into consideration the pseudo-resistive input behavior of power electronic converter in the discontinuous conduction mode. The proposed method regulates the input resistance of a boost converter to a desired value determined by the PV characterisitics to achieve maximum power conversion, which can be extended to other types of converters such as buck and buck-boost. Simulation results indicate that the PV system working under the proposed controller can successfully track different maximum power points under rapidly changing atmospheric conditions. Comparative studies are provided using numerical simulations that illustrate improvements in using the proposed control scheme.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"92 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120903141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-06-19DOI: 10.1109/PVSC.2011.6186306
N. Kawasaki, A. Usami, K. Nishioka, T. Shimakage, J. Sumita, H. Yamane
In the near future, short time fluctuations of the power generation from grid-connected photovoltaic (PV) power generation systems will become an important issue in the utilities. The smoothing effect that the fluctuations of the power generation from scatteringly installed PV power generation systems cancel out is well known. In this study, we have demonstrated the smoothing effect for short time fluctuations from analyses of the solar irradiance in an area of an about 10km square. Additionally, the spatial interpolation of the solar irradiance is also discussed. A good agreement between the measurements and the predictions of the spatial interpolation is obtained in fluctuation cycles longer than 8 minutes.
{"title":"Spatial interpolation of the solar irradiance; A study from the smoothing effect of irradiance fluctuations","authors":"N. Kawasaki, A. Usami, K. Nishioka, T. Shimakage, J. Sumita, H. Yamane","doi":"10.1109/PVSC.2011.6186306","DOIUrl":"https://doi.org/10.1109/PVSC.2011.6186306","url":null,"abstract":"In the near future, short time fluctuations of the power generation from grid-connected photovoltaic (PV) power generation systems will become an important issue in the utilities. The smoothing effect that the fluctuations of the power generation from scatteringly installed PV power generation systems cancel out is well known. In this study, we have demonstrated the smoothing effect for short time fluctuations from analyses of the solar irradiance in an area of an about 10km square. Additionally, the spatial interpolation of the solar irradiance is also discussed. A good agreement between the measurements and the predictions of the spatial interpolation is obtained in fluctuation cycles longer than 8 minutes.","PeriodicalId":373149,"journal":{"name":"2011 37th IEEE Photovoltaic Specialists Conference","volume":"26 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120999434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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