From IEC 61853 power measurements to PV system simulations.

Driesse, Anton; Stein, Joshua S.

doi:10.2172/1615179

Cited by 6 publications

(44 citation statements)

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“…To summarize, the new ADR model consists of the four equations marked with an asterisk, (25) (28), respectively. 2) Calculate S o (T) and then V(S, T) using (29) and (28), respectively.…”

Section: New Model Descriptionmentioning

confidence: 99%

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A New Photovoltaic Module Efficiency Model for Energy Prediction and Rating

Driesse¹,

Theristis

Stein

2021

IEEE J. Photovoltaics

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The IEC 61853 photovoltaic (PV) module energy rating standard requires measuring module power (and hence, efficiency) over a matrix of irradiance and temperature conditions. These matrix points represent nearly the full range of operating conditions encountered in the field in all but the most extreme locations and create an opportunity to develop alternative approaches for calculating system performance. In this article, a new PV module efficiency model is presented and compared with five published models using matrix data collected from four different PV module types. The results of the comparative analysis demonstrated that the new model improves on the existing ones exhibiting root-mean-square errors in normalized efficiency well below 0.01 for all cases and PV modules. The analysis also highlighted its ability to interpolate and extrapolate performance between and beyond measured matrix points of irradiance and temperature, establishing it as a robust yet relatively simple model for several applications that are detailed throughout this article.

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“…To summarize, the new ADR model consists of the four equations marked with an asterisk, (25) (28), respectively. 2) Calculate S o (T) and then V(S, T) using (29) and (28), respectively.…”

Section: New Model Descriptionmentioning

confidence: 99%

“…3) Calculate the normalized voltage, v(S, T) using (30). 4) Calculate the efficiency, η(S, T) using * (25). Due to the normalization steps, the coefficients carry the following meanings.…”

Section: New Model Descriptionmentioning

confidence: 99%

A New Photovoltaic Module Efficiency Model for Energy Prediction and Rating

Driesse¹,

Theristis

Stein

2021

IEEE J. Photovoltaics

Self Cite

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“…On the other hand, the empirical models are characterized by empirical or semiempirical expressions that allow for estimating just a single or a few key-points of the I-V curve expected at PV module terminals, but in any operating condition [14][15][16][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. Therefore, their empirical coefficients are usually determined from fitting procedures carried out on numerous operational records of the PV module under study [7].…”

Section: Introductionmentioning

confidence: 99%

“…Published in 2011, part one of this standard (IEC 61853-1), "Irradiance and temperature performance measurements and power rating", establishes that a PV module must be tested at twenty-two points of an operating conditions matrix, in which the irradiance incident ranges from 100 to 1100 W/m² and operating temperature, from 15 to 75°C [38]. Accordingly, part three of this same standard (IEC 61853-3), "Energy rating of PV modules", recommends an "interpolation method" that is based on bilinear interpolation and linear extrapolation procedures, to estimate the PV modules performance under operating conditions that transcend the points of the IEC 61853-1 matrix [36,39]. However, this recommendation is not restrictive and, therefore, other alternatives, such as empirical models, can be evaluated in order to obtain more accurate results [36].…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, part three of this same standard (IEC 61853-3), "Energy rating of PV modules", recommends an "interpolation method" that is based on bilinear interpolation and linear extrapolation procedures, to estimate the PV modules performance under operating conditions that transcend the points of the IEC 61853-1 matrix [36,39]. However, this recommendation is not restrictive and, therefore, other alternatives, such as empirical models, can be evaluated in order to obtain more accurate results [36].…”

Section: Introductionmentioning

confidence: 99%

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Empirical Models Applied to Distributed Energy Resources—An Analysis in the Light of Regulatory Aspects

et al. 2021

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According to the International Electrotechnical Commission (IEC) 61853 standard, the power rating of photovoltaic (PV) modules must be done on a measurement matrix that broadly covers the ranges of operating conditions encountered in the field. These results are becoming more frequent in recent module datasheets. This paper investigates the effectiveness of applying existing empirical PV performance models while using a matrix with 18 operational records, similar to the 22 that were recommended by IEC 61853, as an alternative to the thousands of records that are conventionally used to determine their coefficients. A review of fifteen empirical models is presented and the procedures for determining their coefficients are discussed. In order to validate them, they were applied to data from fourteen PV modules, which remained installed outdoors for about one year, in three locations with distinct climate types. Although the uncertainties that were obtained with the proposed approach, as compared to the conventional one, are about 1% higher for xSi and CdTe modules, and somewhat higher for mSi and CIGS modules, the total uncertainties were only around 5%, a value that is quite adequate for evaluating module performance. Moreover, these uncertainties were from two to five times smaller than those that were obtained by the method that was recommended by IEC 61853 for this purpose.

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