# Best-fit mathematical operator for power equation of solar photovoltaic module

Wong, Kin Fatt and Ahmad, Robiah and Kadir, Kushsairy and Ahmad, Norulhusna (2021) Best-fit mathematical operator for power equation of solar photovoltaic module. In: 7th IEEE International Conference on Smart Instrumentation, Measurement and Applications, ICSIMA 2021, 23 August 2021 - 25 August 2021, Virtual, Bandung.

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Official URL: http://dx.doi.org/10.1109/ICSIMA50015.2021.9526309

## Abstract

The solar photovoltaic (PV) module is designed to convert the solar radiation directly into electricity which can be calculated through the mathematical equation of PV power output that will be influenced by the cell temperature. However, two different mathematical operators, namely the addition and subtraction operator, can be found in the equations of power output and cell temperature, respectively. These inverse mathematical operators can lead the same equation to produce two different calculation results. Thus, this paper conducts a series of result analyses on the mathematical equations of PV power output and cell temperature to determine the best-fit mathematical operator to avoid any problematical calculation results that can influence the accuracy in estimating the size of a PV system. As to problematical results, the equation of power output with the unfit mathematical operator will produce the results in opposite operational characteristics, and cell temperature will produce the results that exceed the standard range of operational temperature of a PV module. Namely, these problematical results will cause an underestimation or overestimation of the size of a PV system and negatively impact any grid-connection systems, especially the large-scale PV system. In summary, the basic mathematical equation of power output is recommended to adopt the addition operator, and cell temperature adopts the subtraction operator.

Item Type: Conference or Workshop Item (Paper) addition operator, best-fit, calculation result, cell temperature, power output, subtraction operator, unfit Q Science > QA Mathematics > QA75 Electronic computers. Computer scienceT Technology > T Technology (General) Razak School of Engineering and Advanced Technology 96283 Yanti Mohd Shah 05 Jul 2022 16:08 05 Jul 2022 16:08

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