An Explicit Multiexponential Model as an Alternative to Traditional Solar Cell Models With Series and Shunt Resistances

Ortíz‐Conde, A.; Lugo-Muñoz, Denise; Sánchez, F.J. Garcı́a

doi:10.1109/jphotov.2012.2190265

Cited by 76 publications

(30 citation statements)

References 44 publications

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“…Calculate f(x k ) and f '(x k ) to solve equations: (8) where (9) As can be seen from the above, the Newton method need to calculate Jacobian matrix f '(x k ). So it becomes very difficult for computing when function f is complex.…”

Section: Quasi Newton Methodsmentioning

confidence: 99%

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Modeling method research of flexible amorphous silicon solar cell

Wang

Han

et al. 2015

Appl. Sol. Energy

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Circuit model of solarcell is the core section of photovoltaic power generation system simulation model. The modeling methods of flexible amorphous silicon solar cell were studied based on improved pho tovoltaic cell circuit model. A group of flexible amorphous silicon solar cell' I-V and P-V data were teste dunder the condition of standard solar light. After that, Quasi Newton method and self organizing migrating algorithm (SOMA) were adopted to calculate the 8 unknown parameters of circuit model, finally establishing the single diode circuit model of this kind of amorphous silicon thin film solar cell. The optimal results cal culated by self organizing migrating algorithm showed that the standard deviation of the calculated current in the circuit model is less than 0.79%, while the sum of squared residuals is only 0.05%. The model laid a theoretical foundation of performance optimization and maximum power tracking control technology devel opment of flexible amorphous silicon solar cells.

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Section: Quasi Newton Methodsmentioning

confidence: 99%

“…The conventional solar cell circuit model is composed of photocurrent source Iph, equivalent shunt diode, and circuit parasitic resis tors [8,9]. Flexible amorphous silicon photovoltaic cell has materials and structural differences com paredwith other types of solar cells.…”

Section: Physical Model Of Amorphous Silicon Solar Cellsmentioning

confidence: 99%

Modeling method research of flexible amorphous silicon solar cell

Wang

Han

et al. 2015

Appl. Sol. Energy

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“…Real semiconductor p-n junctions, are known to exhibit multiple simultaneous conduction mechanisms, usually described with multi-exponential models, characterized by a parallel bank of diodes with different ideality factors and saturation currents as shown in [35], [36]. In these works the junction model with N conduction mechanisms presented in Fig.…”

Section: A Applications In the K Domainmentioning

confidence: 99%

Modeling nonlinear wave digital elements using the Lambert function

Bernardini

Werner

Sarti

et al. 2016

IEEE Trans. Circuits Syst. I

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A large class of transcendental equations involving exponentials can be made explicit using the Lambert W function. In the last fifteen years, this powerful mathematical tool has been extensively used to find closed-form expressions for currents or voltages in circuits containing diodes. Until now almost all the studies about the W function in circuit analysis concern the Kirchhoff (K) domain, while only few works in the literature describe explicit models for diode circuits in the Wave Digital (WD) domain. However explicit models of NonLinear Elements (NLEs) in the WD domain are particularly desirable, especially in order to avoid the use of iterative algorithms. This paper explores the range of action of the W function in the WD domain; it describes a procedure to search for explicit wave mappings, for both one-port and multi-port NLEs containing diodes. WD models, describing an arbitrary number of different parallel and anti-parallel diodes, a transformerless ring modulator and some BJT amplifier configurations, are derived. In particular, an extended version of the BJT Ebers-Moll model, suitable for implementing feedback between terminals, is introduced

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“…In a majority of these methods, I L and I s are determined analytically, and R s , R sh , and m are determined via numerical solution of nonlinear equations, using, for example, the GaussSeidel method [18]. Convergence issues related to the solution of nonlinear equations can be avoided by the use of explicit methods [6], [19]- [22]. Simplification of nonlinear equations is achieved by using the Lambert W function for modifying the exponential expression [21].…”

Section: Introductionmentioning

confidence: 99%

Sequential Optimization for PV Panel Parameter Estimation

Bharadwaj

Chaudhury

2016

IEEE J. Photovoltaics

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The output of a solar photovoltaic (PV) system can be predicted using a parameterized model. The parameters can be obtained from the datasheet of the panel or from the measured current-voltage (I-V) characteristics. Measurement-based parameter estimation is shown to provide better results, as compared with the datasheet-based method. This effect magnifies for older panels due to the deterioration of panel characteristics with time, leading to a deviation from the datasheet specifications. Leastsquares minimization is applied on the measured data using the Levenberg-Marquardt algorithm (LMA), trust region reflective Newton, and steepest descent optimization, which are compared on the basis of accuracy and speed. Low computational complexity and high parameter accuracy is ensured by introducing a novel sequential parameter estimation, in which two of the parameters are analytically evaluated, and a separate sequential evaluation of the shunt resistance parameter is performed. The predicted maximum power from the proposed method matches the experimental measurements with high accuracy.Index Terms-Gradient methods, least-squares minimization, maximum power point (MPP), parameter estimation, photovoltaic (PV) cells.

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An Explicit Multiexponential Model as an Alternative to Traditional Solar Cell Models With Series and Shunt Resistances

Cited by 76 publications

References 44 publications

Modeling method research of flexible amorphous silicon solar cell

Modeling method research of flexible amorphous silicon solar cell

Modeling nonlinear wave digital elements using the Lambert function

Sequential Optimization for PV Panel Parameter Estimation

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