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Com o desenvolvimento das aplicações fotovoltaicas, nomeadamente em edifícios, as situações
em que existe sombreamento dos módulos fotovoltaicos tem-se tornado mais importante. O efeito das
sombras no desempenho dos sistemas fotovoltaicos é negativo uma vez que provoca a diminuição da
produção de eletricidade dos módulos fotovoltaicos. Por forma a contornar este problema têm vindo a
ser desenvolvidas ferramentas que possibilitam simular as várias implementações possíveis dos
painéis para que o cliente possa obter o melhor rendimentos possível da instalação, uma vez que é
feito um estudo prévio da produção de energia do sistema instalado dependendo de vários fatores
incluindo das possíveis sombras a que estará sujeito em cada implementação simulada.
O projeto pretende estudar o efeito da sombra no desempenho dos módulos fotovoltaicos na
produção de energia, sendo adotada uma abordagem simultaneamente experimental e de modelação.
São feitas medições das curvas IV sob o efeito de diversos sombreamentos no campus solar da
FCUL e posteriormente os resultados são comparados com o software de simulação/modelação
desenvolvido pela empresa LUCISUN.
Com os resultados obtidos confirmámos que painéis que utilizam a tecnologia de células halfcut são menos afetados em condições de sombreamento comparativamente aos módulos
convencionais, que sofrem mais oscilações na curva IV.
A ferramenta devolvida pela Lucisun apresentou resultados da simulação equivalentes aos
resultados das experiências, tornando fiável e válida a sua utilização.
With the development of photovoltaic applications, particularly in buildings, situations where there is shading of the photovoltaic modules have become more significant. The effect of shadows on the performance of photovoltaic systems is negative, as it leads to a decrease in electricity production from the photovoltaic modules. In order to overcome this problem, tools have been developed to simulate various possible panel implementations so that the customer can obtain the best possible performance from the installation. A preliminary study of the energy production of the installed system is conducted, taking into account various factors, including potential shadows in each simulated implementation. The project aims to study the effect of shading on the performance of photovoltaic modules in energy production, adopting a combined experimental and modeling approach. Measurements of IV curves are taken under different shading conditions at the solar campus of FCUL, and subsequently, the results are compared with the simulation/modeling software developed by the company LUCISUN. Based on the obtained results, it was confirmed that panels using half-cut cell technology are less affected by shading conditions compared to conventional modules, which experience more fluctuations in the IV curve. The simulation tool provided by Lucisun yielded simulation results that were equivalent to the experimental results, making it reliable and valid for use.
With the development of photovoltaic applications, particularly in buildings, situations where there is shading of the photovoltaic modules have become more significant. The effect of shadows on the performance of photovoltaic systems is negative, as it leads to a decrease in electricity production from the photovoltaic modules. In order to overcome this problem, tools have been developed to simulate various possible panel implementations so that the customer can obtain the best possible performance from the installation. A preliminary study of the energy production of the installed system is conducted, taking into account various factors, including potential shadows in each simulated implementation. The project aims to study the effect of shading on the performance of photovoltaic modules in energy production, adopting a combined experimental and modeling approach. Measurements of IV curves are taken under different shading conditions at the solar campus of FCUL, and subsequently, the results are compared with the simulation/modeling software developed by the company LUCISUN. Based on the obtained results, it was confirmed that panels using half-cut cell technology are less affected by shading conditions compared to conventional modules, which experience more fluctuations in the IV curve. The simulation tool provided by Lucisun yielded simulation results that were equivalent to the experimental results, making it reliable and valid for use.
Descrição
Tese de mestrado, Engenharia da Energia e Ambiente , 2024, Universidade de Lisboa, Faculdade de Ciências
Palavras-chave
energia solar sombreamento célula solar half-cut curva IV Lucisun Teses de mestrado - 2024
