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Refinement of the co-content function, through an integration of a polynomial fit of $$I-{I}_{sc}$$. Part 1 theoretical analysis and proposal

Year: 2024
Type: article
Abstract: In this Part 1 article of this series of articles, a new methodology to refine the Co-Content function $$\left(CC\left(V,I\right)\right)$$ C C V , I is proposed, consisting on fitting the current minus the short-circuit current $$(I-{I}_{sc})$$ ( I - I sc ) , to an $$N-1$$ N - 1 order polynomial, where $${N}_{points}=N$$ N points = N , is the number of measured current–voltage $$\left(IV\right)$$ I V points, and integrating it to calculate $$CC\left(V,I\right)$$ C C V , I . The shunt resistance $$\left({R}_{sh}\right)$$ R sh , the series resistance $$\left({R}_{s}\right)$$ R s , the ideality factor $$\left(n\right)$$ n , the light current $$\left({I}_{lig}\right)$$ I lig , and the saturation current $$\left({I}_{sat}\right)$$ I sat , are then deduced, in the case of a constant percentage noise or a percentage noise of the maximum current $$\left({I}_{max}\right)$$ I max . In the former case, $${R}_{s}$$ R s , $${R}_{sh}, n, \text{and } {I}_{lig},$$ R sh , n , and I lig , can be deduced with less than 10% error, using only $${P}_{V}=$$ P V = 51 $$\frac{number\, of \,points}{V}$$ n u m b e r o f p o i n t s V , even if the noise is as large as $${p}_{n}=0.1\text{\%}$$ p n = 0.1 \% , with a computation time around 80 ms.
DOI: 10.1007/s44291-024-00036-9
Language: English
Field: Energy
Open Access status: diamond
Funder: Newton Fund
OpenAlex ID: W4405920574
FWCI: 0.465
Cites: 51
Cited by: 7
Related to: 10