Conversor Cc/cc Com Capacitor Comutado Aplicado Para Equalização De Potência Em Vetores De Leds
DOI:
https://doi.org/10.18618/REP.2013.3.11001108Keywords:
Capacitor Comutado, comutação suave, Equalização de Corrente, LEDs de PotênciaAbstract
Este trabalho propõe um conversor para o acionamento de diodos emissores de luz (LEDs) de potência. Em contraste a propostas convencionais em corrente continua, a potência provida aos LEDs é estabilizada através de um capacitor comutado. O conversor proposto difere dos conversores tradicionais baseados no capacitor comutado, pois utiliza um pequeno indutor para possibilitar a comutação suave nos interruptores. Após uma análise qualitativa e quantitativa, a utilização do conversor para a equalização de potência em vetores de LEDs é proposta. O circuito proposto é validado através resultados experimentais de um protótipo de 55 W. O protótipo apresentou um rendimento de 87%.
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