Banca de DEFESA: VALDEMAR MOREIRA CAVALCANTE JUNIOR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : VALDEMAR MOREIRA CAVALCANTE JUNIOR
DATE: 24/02/2023
TIME: 14:00
LOCAL: Sessão por videoconferência: Google Meet: https://meet.google.com/nzp-dzyn-cdm
TITLE:

PROPOSAL AND COMPARATIVE ANALYSIS OF GLOBAL NONLINEAR MODELS FOR PHOTOVOLTAIC MODULES .

KEY WORDS:

Estimation.Global nonlinear model. Mathematical model.Photovoltaic module. Photovoltaic system. 

PAGES: 104
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUMMARY:

The solar energy scenario is evolving and gaining more and more space among the energy sources. Thus, the emergence of new technologies is more present, bringing the increase in efficiency and decrease of costs, making investment in the solar sector more viable. As a result, research in this area has been expanding, especially focusing increating mathematical models for cells and/or modules. Therefore, it is essential that these models are accurate and able to adapt to different temperature and irradiance conditions, since the classical models are simplified and represent only one I-V curveat a time, being necessary to estimate a new model for each operating condition. As far as it is concerned, good mathematical models could be applied in estimating the PV system performance, forecasting power generation, developing of new maximum power point tracking (MPPT) algorithms and investigating defects in PV cells, modules and connections. Therefore, the main objective of this work is to study global nonlinear models based on the electric circuit of a single diode model for PV modules and to perform a novel comparative study of their accuracy. Thus, the models will be evaluated for their ability to estimate the behaviors of I-V's and P-V's curves in comparison with experimental curves, using as figure of merit the Normalized Mean Absolute Error in Power for monocrystalline silicon, polycrystalline silicon and cadmium telluride technologies. While carrying out this study, a novel global nonlinear mathematical model was proposed, valid for a desirable range of irradiance and temperature conditions, having superior results when compared with other already published models.The comparative results enabled an assertive assessment of which models and optimization methods have the best capacity to represent monocrystalline silicon, polycrystalline silicon and cadmium telluride modules, i.e. the most suitable models to be used in many possible applications. 

COMMITTEE MEMBERS:
Externo à Instituição - EMERSON ALVES DA SILVA - UPE
Presidente - 2921718 - FABRICIO BRADASCHIA
Externo à Instituição - LEANDRO MICHELS - UFSM
Interno - 2378833 - MARCELO CABRAL CAVALCANTI