Pub Date : 2016-06-05DOI: 10.1109/PVSC.2016.7750220
M. El-Sayed, Mohamed Abd-El-Hakeem Mohamed, M. H. Osman
This paper proposes a photovoltaic mathematical model featuring reduction in mathematical solution and comparable accuracy. The proposed model mimics the characteristics of the practical model by solving two nonlinear equations only, thus providing low computational time. In this paper, the most important parameters, i.e. the short circuit current, open-circuit voltage, maximum power point of the PV module, are determined with best accuracy under different solar irradiance intensities and module temperatures. The best estimation of the most important parameters enhance the model's accuracy at any values of irradiance and temperature. The proposed procedure is used the Newton-Raphson method based on simplified method to calculate the parameters of a PV system. The initial values of these parameters are estimated by using the simplified method to prevent a bad starting point which can compromise the convergence of the Newton-Raphson's method. Also the proposed equations which are used to calculate these parameters of a PV system, allow one to calculate it's without relying on the experimental I-V curve to determine the parameters of a PV system as usually reported in literature. The effectiveness of the model is shown by comparing the accuracy of the proposed model with those of the available models.
{"title":"A novel parameter estimation of a PV model","authors":"M. El-Sayed, Mohamed Abd-El-Hakeem Mohamed, M. H. Osman","doi":"10.1109/PVSC.2016.7750220","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7750220","url":null,"abstract":"This paper proposes a photovoltaic mathematical model featuring reduction in mathematical solution and comparable accuracy. The proposed model mimics the characteristics of the practical model by solving two nonlinear equations only, thus providing low computational time. In this paper, the most important parameters, i.e. the short circuit current, open-circuit voltage, maximum power point of the PV module, are determined with best accuracy under different solar irradiance intensities and module temperatures. The best estimation of the most important parameters enhance the model's accuracy at any values of irradiance and temperature. The proposed procedure is used the Newton-Raphson method based on simplified method to calculate the parameters of a PV system. The initial values of these parameters are estimated by using the simplified method to prevent a bad starting point which can compromise the convergence of the Newton-Raphson's method. Also the proposed equations which are used to calculate these parameters of a PV system, allow one to calculate it's without relying on the experimental I-V curve to determine the parameters of a PV system as usually reported in literature. The effectiveness of the model is shown by comparing the accuracy of the proposed model with those of the available models.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"49 1","pages":"3027-3032"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86937708","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7749993
H. Qasem, A. Mnatsakanyan, P. Banda
Accumulation of dust on PV modules is one of the major issues limiting the technology adoption in many regions of the world, especially the in Middle East. Even though the solar irradiation is relatively high, the dusty environment is one of the key factors limiting a larger scale implementation of such renewable energy sources. In this paper we present a new approach for optimizing operation of a PV plant in terms of dust assessment and management. The proposed method includes analysis of PV modules' surfaces using an image processing technique. The acquisition of images is assumed to be performed by aerial robotics (i.e. drones) equipped with high resolution cameras. The key novelty of this work is the algorithm used for dust detection and the method used for assessing the level of dust on a given surface. This is done by using MATLAB image processing tool box. In this paper, the concept and methodology are presented where the algorithm is validated against electrical measurement where it showed a variation of 5% to 5.5% of detection variation based on the method used in the detection algorithm.
{"title":"Assessing dust on PV modules using image processing techniques","authors":"H. Qasem, A. Mnatsakanyan, P. Banda","doi":"10.1109/PVSC.2016.7749993","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7749993","url":null,"abstract":"Accumulation of dust on PV modules is one of the major issues limiting the technology adoption in many regions of the world, especially the in Middle East. Even though the solar irradiation is relatively high, the dusty environment is one of the key factors limiting a larger scale implementation of such renewable energy sources. In this paper we present a new approach for optimizing operation of a PV plant in terms of dust assessment and management. The proposed method includes analysis of PV modules' surfaces using an image processing technique. The acquisition of images is assumed to be performed by aerial robotics (i.e. drones) equipped with high resolution cameras. The key novelty of this work is the algorithm used for dust detection and the method used for assessing the level of dust on a given surface. This is done by using MATLAB image processing tool box. In this paper, the concept and methodology are presented where the algorithm is validated against electrical measurement where it showed a variation of 5% to 5.5% of detection variation based on the method used in the detection algorithm.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"54 1","pages":"2066-2070"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90092098","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7749719
Z. Ren, Jixiang Zhou, A. Ng, Q. Shen, Hui Shen, C. Surya
Perovskite and crystalline silicon (c-Si) with complementary absorption spectra are connected in a 4-terminal-tandem configuration for efficient utilization of the photons from the complete solar spectrum. A highly transparent electrode with low resistivity is developed by the deposition of molybdenum trioxide (MoO3)/Gold (Au)/ molybdenum trioxide (MoO3) multilayer. The thickness of constituent layer of the electrode is carefully controlled to achieve the highest light transmissivity to enhance the absorption of the bottom cell. Perovskite films with low density of bandgap states are obtained by oxygen postdeposition treatment. A record power conversion efficiency (PCE) of 23.6% for tandem device is achieved comparing to 18.1% and 19.1% of transparent perovskite solar cell and c-Si solar cell operated individually.
{"title":"Record high performance of perovskite/crystalline silicon four-terminal tandem solar cells","authors":"Z. Ren, Jixiang Zhou, A. Ng, Q. Shen, Hui Shen, C. Surya","doi":"10.1109/PVSC.2016.7749719","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7749719","url":null,"abstract":"Perovskite and crystalline silicon (c-Si) with complementary absorption spectra are connected in a 4-terminal-tandem configuration for efficient utilization of the photons from the complete solar spectrum. A highly transparent electrode with low resistivity is developed by the deposition of molybdenum trioxide (MoO3)/Gold (Au)/ molybdenum trioxide (MoO3) multilayer. The thickness of constituent layer of the electrode is carefully controlled to achieve the highest light transmissivity to enhance the absorption of the bottom cell. Perovskite films with low density of bandgap states are obtained by oxygen postdeposition treatment. A record power conversion efficiency (PCE) of 23.6% for tandem device is achieved comparing to 18.1% and 19.1% of transparent perovskite solar cell and c-Si solar cell operated individually.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"62 1","pages":"0816-0820"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81409025","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7749749
M. Gostein, B. Stueve, K. Passow, A. Panchula
We evaluate the GTI-DIRINT model for estimating direct normal irradiance (DNI), diffuse horizontal irradiance (DHI), and global horizontal irradiance (GHI) from measured plane-of-array (POA) irradiance. Our motivation is to explore the potential for limiting ground-based irradiance measurements to POA to reduce instrumentation costs. We test the GTI-DIRINT model using meteorological data collected at seven First Solar PV power plants, comparing the GTI-DIRINT model which uses POA as input to the DIRINT model which uses GHI as input.
{"title":"Evaluating a model to estimate GHI, DNI, & DHI from POA irradiance","authors":"M. Gostein, B. Stueve, K. Passow, A. Panchula","doi":"10.1109/PVSC.2016.7749749","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7749749","url":null,"abstract":"We evaluate the GTI-DIRINT model for estimating direct normal irradiance (DNI), diffuse horizontal irradiance (DHI), and global horizontal irradiance (GHI) from measured plane-of-array (POA) irradiance. Our motivation is to explore the potential for limiting ground-based irradiance measurements to POA to reduce instrumentation costs. We test the GTI-DIRINT model using meteorological data collected at seven First Solar PV power plants, comparing the GTI-DIRINT model which uses POA as input to the DIRINT model which uses GHI as input.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"1 1","pages":"0943-0946"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88479883","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7749579
S. Askins, G. Vallerotto, M. Victoria, R. Herrero, C. Domínguez, I. Antón, G. Sala
The CPV industry has moved to very high concentration ratios (1000X or more) but the commonly used Fresnel lenses are limited to concentration ratios closer to 200X by chromatic aberration, leading manufacturers to turn to secondary optical elements, which increase cost and complexity. Here we present the achromatic on glass (ADG) lens a novel achromatic lens design and manufacturing method that may be similar in cost to existing silicone on glass (SOG) lenses but with improved performance In addition, the paper also summarizes on the results of ray-trace simulations, and experimental results of the first prototype lenses, proving the viability of the design.
{"title":"A manufacturable achromatic fresnel lens for CPV","authors":"S. Askins, G. Vallerotto, M. Victoria, R. Herrero, C. Domínguez, I. Antón, G. Sala","doi":"10.1109/PVSC.2016.7749579","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7749579","url":null,"abstract":"The CPV industry has moved to very high concentration ratios (1000X or more) but the commonly used Fresnel lenses are limited to concentration ratios closer to 200X by chromatic aberration, leading manufacturers to turn to secondary optical elements, which increase cost and complexity. Here we present the achromatic on glass (ADG) lens a novel achromatic lens design and manufacturing method that may be similar in cost to existing silicone on glass (SOG) lenses but with improved performance In addition, the paper also summarizes on the results of ray-trace simulations, and experimental results of the first prototype lenses, proving the viability of the design.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"9 1","pages":"0204-0209"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86207442","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7750191
Kyung Kim, Z. Hameiri, N. Borojevic, S. Duttagupta, S. Winderbaum
Aluminum oxide has been highlighted as a promising surface passivation layer for p-type silicon surface. To-date, most of the studies have focused on aluminum oxide layers deposited with atomic layer deposition systems which have lower throughput than industrial plasma-based systems. In this study, the effects of deposition conditions on the electrical and optical properties of aluminum oxide deposited by an industrial plasma enhanced chemical vapor deposition system are presented. Low saturation current density of 1.9 fA/cm2 was achieved by as deposited layer on p-type Czochralski wafer. The most significant deposition process factor for high quality surface passivation was found to be the gas flow rate ratio between nitrous oxide and tri-methyl-aluminum.
{"title":"Outstanding As-deposited surface passivation by industrial PECVD aluminum oxide","authors":"Kyung Kim, Z. Hameiri, N. Borojevic, S. Duttagupta, S. Winderbaum","doi":"10.1109/PVSC.2016.7750191","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7750191","url":null,"abstract":"Aluminum oxide has been highlighted as a promising surface passivation layer for p-type silicon surface. To-date, most of the studies have focused on aluminum oxide layers deposited with atomic layer deposition systems which have lower throughput than industrial plasma-based systems. In this study, the effects of deposition conditions on the electrical and optical properties of aluminum oxide deposited by an industrial plasma enhanced chemical vapor deposition system are presented. Low saturation current density of 1.9 fA/cm2 was achieved by as deposited layer on p-type Czochralski wafer. The most significant deposition process factor for high quality surface passivation was found to be the gas flow rate ratio between nitrous oxide and tri-methyl-aluminum.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"70 1","pages":"2917-2921"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85696676","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7750282
S. McWilliams, R. Sundaramoorthy, D. Metacarpa, P. Haldar
Single-axis trackers are widely deployed in the southern latitudes of the US, and make up a significant market share for ground mount installations. This wide scale tracker deployment is not currently replicated in higher latitudes, in part, due to a lack of economic analysis for long term return on investments for the increased installation costs of trackers as compared to fixed-tilt arrays. The energy production and initial performance characteristics of a fixed-tilt and co-located horizontal single-axis tracker arrays, installed at 44.5° latitude were evaluated to determine and compare power output variations. DC electrical data was collected for the thin film CIGS based fixed-tilt and horizontal single-axis tracking arrays, and compared with the output from an adjacent fixed-tilt c-Si array to determine the potential benefits of CIGS capacity factor. Results indicate benefits ranging from 17%-22% in power production using a single axis tracker as compared to a fixed tilt array.
{"title":"PV single axis tracker array tests in the Northeast US with CIGS","authors":"S. McWilliams, R. Sundaramoorthy, D. Metacarpa, P. Haldar","doi":"10.1109/PVSC.2016.7750282","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7750282","url":null,"abstract":"Single-axis trackers are widely deployed in the southern latitudes of the US, and make up a significant market share for ground mount installations. This wide scale tracker deployment is not currently replicated in higher latitudes, in part, due to a lack of economic analysis for long term return on investments for the increased installation costs of trackers as compared to fixed-tilt arrays. The energy production and initial performance characteristics of a fixed-tilt and co-located horizontal single-axis tracker arrays, installed at 44.5° latitude were evaluated to determine and compare power output variations. DC electrical data was collected for the thin film CIGS based fixed-tilt and horizontal single-axis tracking arrays, and compared with the output from an adjacent fixed-tilt c-Si array to determine the potential benefits of CIGS capacity factor. Results indicate benefits ranging from 17%-22% in power production using a single axis tracker as compared to a fixed tilt array.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"40 1","pages":"3328-3330"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80582825","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7749631
S. Hawks, Abdullah S Abbas, A. Alivisatos
Sintering semiconductor nanocrystals represents a possible low-cost route to creating functional bulk absorber layers for photovoltaic applications. Here we highlight the critical aspects of sintering CdTe tetrapods into smooth, dense, polycrystalline films that are capable of yielding >7% efficient solar cells with just ~500 nm thick active layers. Despite respectable performance, we find that there is room for improvement regarding the current state-of-the-art processing and device structure. Namely, `optimal' films/devices have exceptionally low photoluminescence yield, grain sizes on the order of 50-100 nm, a metastable ITO/CdTe hole-collecting contact, and CdTe that is not phase pure. Our findings further suggest that this approach to creating functional CdTe absorber layers has great potential beyond the already encouraging results reported in the literature.
{"title":"Aspects of sintering CdTe nanoparticles into functional bulk absorber layers","authors":"S. Hawks, Abdullah S Abbas, A. Alivisatos","doi":"10.1109/PVSC.2016.7749631","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7749631","url":null,"abstract":"Sintering semiconductor nanocrystals represents a possible low-cost route to creating functional bulk absorber layers for photovoltaic applications. Here we highlight the critical aspects of sintering CdTe tetrapods into smooth, dense, polycrystalline films that are capable of yielding >7% efficient solar cells with just ~500 nm thick active layers. Despite respectable performance, we find that there is room for improvement regarding the current state-of-the-art processing and device structure. Namely, `optimal' films/devices have exceptionally low photoluminescence yield, grain sizes on the order of 50-100 nm, a metastable ITO/CdTe hole-collecting contact, and CdTe that is not phase pure. Our findings further suggest that this approach to creating functional CdTe absorber layers has great potential beyond the already encouraging results reported in the literature.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"6 1","pages":"0445-0449"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78690612","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7749556
David C. Miller, Eleonora Annigoni, A. Ballion, J. Bokria, L. Bruckman, D. Burns, Xinxin Chen, Jiangtao Feng, R. French, S. Fowler, C. Honeker, M. Kempe, Hussameldin I. Khonkar, Michael Kohl, Laure‐Emmanuelle Perret‐Aebi, N. Phillips, Kurt P. Scott, F. Sculati‐Meillaud, J. Wohlgemuth
Reduced strength of attachment of the encapsulant resulting from the outdoor environment, including ultraviolet (UV) radiation, may decrease photovoltaic (PV) module lifetime by enabling widespread corrosion of internal components. To date, few studies exist showing how the adhesion of PV components varies with environmental stress. We have conducted an interlaboratory experiment to provide an understanding that will be used to develop climatic specific module tests. Factors examined in the study included the UV light source (lamp type), temperature, and humidity to be proposed for use in accelerated aging tests. A poly (ethylene-co-vinyl acetate) (EVA) formulation often used in veteran PV installations was studied using a compressive shear test - to quantify the strength of attachment at the EVA/glass interface. Replicate laminated glass/polymer/glass coupon specimens were weathered at 12 institutions using a variety of indoor chambers or field aging. Shear strength, shear strain, and toughness were measured using a mechanical load-frame for the compressive shear test, with subsequent optical imaging and electron microscopy of the separated surfaces.
{"title":"Degradation in PV encapsulant strength of attachment: An interlaboratory study towards a climate-specific test","authors":"David C. Miller, Eleonora Annigoni, A. Ballion, J. Bokria, L. Bruckman, D. Burns, Xinxin Chen, Jiangtao Feng, R. French, S. Fowler, C. Honeker, M. Kempe, Hussameldin I. Khonkar, Michael Kohl, Laure‐Emmanuelle Perret‐Aebi, N. Phillips, Kurt P. Scott, F. Sculati‐Meillaud, J. Wohlgemuth","doi":"10.1109/PVSC.2016.7749556","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7749556","url":null,"abstract":"Reduced strength of attachment of the encapsulant resulting from the outdoor environment, including ultraviolet (UV) radiation, may decrease photovoltaic (PV) module lifetime by enabling widespread corrosion of internal components. To date, few studies exist showing how the adhesion of PV components varies with environmental stress. We have conducted an interlaboratory experiment to provide an understanding that will be used to develop climatic specific module tests. Factors examined in the study included the UV light source (lamp type), temperature, and humidity to be proposed for use in accelerated aging tests. A poly (ethylene-co-vinyl acetate) (EVA) formulation often used in veteran PV installations was studied using a compressive shear test - to quantify the strength of attachment at the EVA/glass interface. Replicate laminated glass/polymer/glass coupon specimens were weathered at 12 institutions using a variety of indoor chambers or field aging. Shear strength, shear strain, and toughness were measured using a mechanical load-frame for the compressive shear test, with subsequent optical imaging and electron microscopy of the separated surfaces.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"42 1","pages":"0095-0100"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73394158","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 : 2016-06-05DOI: 10.1109/PVSC.2016.7750365
Siyu Guo, E. Schneller, K. Davis, W. Schoenfeld
Electroluminescence (EL) images are normally used for qualitative analysis of photovoltaic (PV) modules. In this work, detailed quantitative analysis of crystalline silicon wafer PV modules is achieved using EL imaging. Rather than visually detecting problems, the method presented in this work allows people to construct a series of dark current-voltage (I-V) curves for each individual solar cell in the PV module by calibrating EL signals of the cells. The I-V characteristics of each solar cell can then be extracted, and the problems happened to individual cells can be accurately detected and quantified. This method is proved to be very effective in the degradation analysis of PV modules.
{"title":"Quantitative analysis of crystalline silicon wafer PV modules by electroluminescence imaging","authors":"Siyu Guo, E. Schneller, K. Davis, W. Schoenfeld","doi":"10.1109/PVSC.2016.7750365","DOIUrl":"https://doi.org/10.1109/PVSC.2016.7750365","url":null,"abstract":"Electroluminescence (EL) images are normally used for qualitative analysis of photovoltaic (PV) modules. In this work, detailed quantitative analysis of crystalline silicon wafer PV modules is achieved using EL imaging. Rather than visually detecting problems, the method presented in this work allows people to construct a series of dark current-voltage (I-V) curves for each individual solar cell in the PV module by calibrating EL signals of the cells. The I-V characteristics of each solar cell can then be extracted, and the problems happened to individual cells can be accurately detected and quantified. This method is proved to be very effective in the degradation analysis of PV modules.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"11 1","pages":"3688-3692"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74318364","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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