Identification of PV system model for simulation of MPPT controllers

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Espinoza, Jhan-Carlo
Lavado-Casimiro, Waldo
Sulca, Juan
Takahashi, Ken
Vuille, Mathias
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Institute of Electrical and Electronics Engineers Inc.
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The present paper is part of a larger project which aims to monitor and mitigate dust on the PV systems in the city of Arequipa. Its objective is to present a simplified model for simulating PV panels for the design and project maximum power point tracker - MPPT controllers. With an experimental setup, signals of voltage, current, power, irradiance and temperature were acquired. A SEPIC converter that can be controlled electronically was simulated and implemented for using it as variable load. The PV model identified was subject to simulation considering variations of temperature and irradiance. Through these simulation, a MPP voltage set point function was identified. Finally a PI controller was implemented for MPPT system to simulate the identified PV model.
The authors gratefully acknowledge support for this Project from The Universidad Catolica San Pablo, The Universidad Nacional de San Agust´ın and The CONCYTEC (Peruvian Research Council).
Palabras clave
Variable loads, Identification (control systems), Maximum power point trackers, Photovoltaic cells, Mppt controllers, PI Controller, PV models, PV panel, PV system, SEPIC converter, Setpoints, Controllers