Analytical Calculation of Photovoltaic Systems Maximum Power Point (MPP) Based on the Operation Point

Abstract

This work proposes a new analytical model to extract the 1-Diode/2-Resistor solar cell/panel equivalent circuit parameters. The methodology is based on a reduced amount of experimentally measured information: short-circuit current, the slope of the I-V curve at that point, the open-circuit voltage, and the current and voltage levels, together with the slope of the I-V curve at the instantaneous operation point. This procedure is specially designed to analyze the performance of autonomous photovoltaic systems, which are most of the primary sources for spacecraft power. Results show good agreement with experimental data. Furthermore, this methodology allows for fast and accurate I-V curve maximum power point (MPP) identification.

Project-based learning applied to spacecraft power systems: a long-term engineering and educational program at UPM University

“…The studied solar panel is formed by four parallel-connected groups of two series-connected The values of the root mean square error (RMSE) were used as a criterion to quantify the diference between the model results and the experimental data [38]. As the RMSE values show (RMSE = 0.73 × 10 −3 -2.9 × 10 −3 ), a quite good agreement was found between the experimental data and the model results, taking into account the previous works on solar panel characterization carried out by IDR/UPM Institute staf [30,33,[39][40][41][42][43]. As a result of this project, it can be said that the on-ground testing conditions used (AM1.5 solar irradiance, glass irradiance iltering…) can be applied to eiciently determine the main parameters of solar panels without the need for special and expensive test equipment.…”

Automated formal verification of stand-alone solar photovoltaic systems

“…The performance of PV systems is usually studied using an equivalent circuit model [24]- [26], which consists of a current source with one or two diodes connected in parallel, and up to two resistors, one connected in parallel and the other one in series, to take into account energy losses in this model [27]. The 1-diode model, illustrated in Fig.…”

“…The simplified model of 1-diode has demonstrated that it has a small error rate, between 0.03% and 4.68% from selected PV panels tested [26]. In addition, this mathematical modeling has the advantage of being an explicit model, which does not use iterative numerical calculation, which is time-consuming to computing [27]. Eq.…”

Optimal Operation Strategy of ESS for EV Charging Infrastructure for Voltage Stabilization in Secondary Feeder of Distribution System

“…The combination of the photovoltaic module changes the output characteristics of the voltage and current of the DC power, and it determines the topology of the photovoltaic power converter. In this paper, it is assumed that the photovoltaic system operates by the MPPT through equations (16) to (17) where, is the thermal voltage, is the series resistor, is the reverse saturation current, shunt resistance, and are voltage and current levels at maximum power point respectably.…”