A compact J-V model for solar cell to simplify parameter calculation

Abstract

For practical solar cells, the J-V (Current-Voltage) equation is quiet implicit to calculate the fill factor and maximum power point through enormous iterative calculations. Here, a new compact model is proposed that is pertinent with different solar cells. Only three model parameters are used to analyse the effectiveness of the model. Compared to other complex implicit models, it does not require iterative calculations for parameter extraction. The effects like space charge leakage current, trapping, tunneling, etc., are reflected in the first term of the model and the second represents the degradation in current due to shunt resistance. It satisfies wide varieties of solar cells with remarkable accuracy as well as parameters are extracted using four points on J-V characteristics only. The model is well compared with experimental characteristics taken from published literatures. V C 2015 AIP Publishing LLC. [http://dx.

Assessment of Explicit Models for Different Photovoltaic Technologies

“…Finally, it is fair to say that in 2015, Dash et al [56] proposed a very similar equation to the one proposed by Karmalkar and Haneefa, but dependent on three parameters rather than two in the reduced form (non-dimensional variables).…”

“…As in the case of the aforementioned equation proposed by Dash et al [56], which was very similar to Karmalkar and Haneefa's model, a modification to this implicit equation was suggested by Miceli et al [57]. However, the reduced equation for this model depends on three parameters, making a solution based on the maximum power point conditions impossible.…”

Exceptional and innovational analysis of n-CdS/p-Si solar cells based on software packages and bias point models: insights into theoretical and experimental characteristics of fabricated solar cells

“…On the other side, the solar cell has a pivotal factor called the "fill factor", which is defined as the ratio of the maximum available power to the product of the open-circuit voltage and short circuit current as follows [20]: max max…”

“…The curves of (I-V) can theoretically be expressed through a proposed characterization model expressing the behavior of current density in terms of voltage in the region where the current density behavior decreases linearly with the potential difference and also in the region where the current density decreases as a function of voltage sharply. According to this theoretical model, the current density expressed as a potential difference is as follows [20,21]: (19) Here, A, B and C represent the parameters of the model. Within the components of Eq.…”

“…21]. Relatedly, according to this model, one can calculate the output power, p of the solar cell as a function of the potential difference between its two ends as follows [20,21]:…”