Encontro de Energia no Meio Rural

Abstract

GALHARDO, Marcos André Barros and PINHO, João Tavares. Avaliação da qualidade da energia fornecida por sistemas renováveis isolados de pequeno porte. In Procedings of the 5th Encontro de Energia no Meio Rural, 2004, Campinas (SP) [online]. 2004 [cited 09 October 2024]. Available from: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022004000100023&lng=en&nrm=iso> .

This paper makes an analysis of the power quality supplied by small renewable energy systems with energy storage in a battery bank and its DC/AC conversion by an inverter. It is shown that the power quality supplied by stand-alone renewable systems depends on the used inverter, specially of its voltage waveform, the load supplied and the voltage level in the battery bank, which has a direct influence on the value of the rms output voltage of the inverter. For these analysis, measurements are presented for typical loads used in these systems as illumination, TV, refrigerator, etc., and combinations of these loads, supplied by different waveforms.

Keywords : Sistemas Renováveis; Inversores; Harmônicos; Sistemas Isolados; Qualidade da Energia.