Estudo de técnicas de extração de máxima potência de painéis fotovoltaicos
The industrialization process initiated a few centuries ago has brought great dependence on fossil fuels often ignoring the environmental factor. An alternative to the growing energetical demand are the renewable sources, which in the last twenty years have represented a considerable increase in the...
| Autor principal: | Blessa, Lucas de Almeida |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/6041 |
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| Resumo: |
The industrialization process initiated a few centuries ago has brought great dependence on fossil fuels often ignoring the environmental factor. An alternative to the growing energetical demand are the renewable sources, which in the last twenty years have represented a considerable increase in the energetic matrix. Among the many sources classified within this scope, solar photovoltaic (PV) is highlighted worldwide. On the other hand, the simple implementation of PV systems does not offer the desired operational credibility due to the low efficiency at conversion of solar to electrical power (18%); In addition, adverse weather conditions tend to have negative influence, reducing the supply of energy. To maximize the generated energy the Maximum Power Point Tracking (MPPT) methods are used with power electronics, which together result in systems of greater reliability and efficiency, reducing the payback time. Among the MPPT methods, the Perturbation and Observation (P&O) and Incremental Conductance (IC) stand out because of its non-dependence of the coupled panel type and high Tracking Factor (Fator de Rastreamento - FR). Thus, a space-state model of a photovoltaic system, composed of a PV module, a power electronic converter and the methods IC and P&O, was implemented in MatLab/Simulink®. Both algorithms were tested for irradiance variation and compared with the Fixe Duty Cycle () result. FR was approximately 80% for the fixed cyclic ratio, while the other MPPT methods perform around 90%. |
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