2014
DOI: 10.1109/jphotov.2013.2280838
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Local Shunting in Multicrystalline Silicon Solar Cells: Distributed Electrical Simulations and Experiments

Abstract: In this paper, we analyze the effect of local shunts in photovoltaic (PV) solar cells by experimental characterization and distributed electrical simulations. To this purpose, we developed a quasi-3-D distributed electrical network that is based on two-diode circuit elementary units. It allows accounting for resistive losses as- sociated to the transport through the emitter, the fingers and the busbars, and to local defects in the semiconductor. The electrical parameters of the equivalent circuit units are cal… Show more

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Cited by 20 publications
(9 citation statements)
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“…Because voltage is negative but current is flowing, the shaded cell sinks power rather than sources power. If the cell sinks significant power, the generated heat drastically increases the localized cell temperature, which can damage the cell [2]; this is commonly known as hot spotting [1], [3].…”
Section: Introductionmentioning
confidence: 99%
“…Because voltage is negative but current is flowing, the shaded cell sinks power rather than sources power. If the cell sinks significant power, the generated heat drastically increases the localized cell temperature, which can damage the cell [2]; this is commonly known as hot spotting [1], [3].…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, the proposed model allows to predict the time required by a PV cell to enter a hot-spot condition rather accurately. We further validated the proposed model with the results reported in [24]. We considered the same power dissipation of 15.1W in the hot-spot area of the shaded PV cell.…”
Section: Model Description and Validationmentioning
confidence: 75%
“…6. As can be seen, after 1000s, a temperature variation equal to T = (237 -60)°C= 177°C is achieved, while in [24] a T = 183°C is reported. Therefore, the proposed model enables an accurate evaluation of the thermal transient of a PV cell undergoing a hot-spot condition.…”
Section: Model Description and Validationmentioning
confidence: 84%
“…Different approaches have been implemented to model mathematically the dynamics of the PV modules, but probably the equivalent circuit representation with single-diode and twodiode models, which are illustrated in Figure 2, represent the most widely used topologies [11][12][13][14]. The two-diode model, as shown in Figure 2(a), is characterized by its high accuracy; however, it is relatively complex and it suffers from low computational speed.…”
Section: Pv Module Model Descriptionmentioning
confidence: 99%