Análise do Fator de Dimensionamento do Inversor em Sistemas Fotovoltaicos Conectados à Rede para Localidades Nordestinas de Clima Tropical Semiárido

José F. B. de F. Filho; Washington L. A. Neves; Flávio B. Costa

doi:10.20906/sbse.v2i1.2969

José F. B. de F. Filho Programa de Pós-Graduação em Engenharia Elétrica, Universidade Federal de Campina Grande, PB
Washington L. A. Neves Programa de Pós-Graduação em Engenharia Elétrica, Universidade Federal de Campina Grande, PB
Flávio B. Costa Michigan Technological University, Houghton, MI, USA

DOI: https://doi.org/10.20906/sbse.v2i1.2969

Keywords: Semiarid climate, solar energy, sizing factor inverter, specific yield, relative humidity, wind speed

Abstract

Designers of solar energy systems constantly opt for a photovoltaic generator power higher than the inverter power, i.e. they consider the Sizing Factor Inverter (SFI) inferior to the unit to reduce costs, however this can decrease inverter lifespan and increase inverter power clipping losses. This research presents the development of a methodology for calculating SFI for northeastern regions with a semiarid tropical climate, considering the influence of this factor on the specific yield of photovoltaic generator and on the performance ratio, and analyze the influence of climatic factors - such as wind speed and relative humidity - in SFI calculation. Results of this research demonstrate it is appropriate to use SFI higher than or equal to the unity to obtain higher rates of energy production and performance ratio for photovoltaic systems installed in regions with a semiarid climate.