Revista Eletrônica de Potência (Brazilian Journal of Power Electronics)

Palavras Chaves: Capacitor eletroquímico de dupla-camada, supercapacitor, ultracapacitor

Resumo

O objetivo principal deste trabalho é apresentar uma pesquisa bibliográfica sobre a aplicação de supercapacitores. Supercapacitor é o termo usado para descrever os capacitores eletroquímicos de dupla camada. Este dispositivo de armazenamento de energia possui elevado valor de capacitância e baixa resistência série equivalente. O dispositivo é apropriado para suprir rapidamente picos elevados de corrente em situações que requerem média quantidade de energia. Geralmente são usados em sistemas híbridos, ou seja, em conjunto com baterias ou células à combustível. Deste modo, cumprem um importante papel como fonte complementar de energia, no intuito de reduzir o tempo de reposta, melhorar a estabilidade e a qualidade do sistema de suprimento. Uma extensa pesquisa bibliográfica permitiu identificar as principais aplicações relacionadas à eletrônica de potência. Após uma apresentação dos aspectos fundamentais do dispositivo, as aplicações são discutidas.

Title: The State Of The Art About Supercapacitors Applications In Power Electronics

Keywords: electrochemical double layer capacitor, supercapacitor, ultracapacitor

Abstract

The main objective of this paper is to present a survey on supercapacitor. Supercapacitor is the usual term that describes the Electrochemical Double Layer Capacitors. This energy storage device has high capacitance value, low series equivalent resistance. These devices are appropriated for supplying fast and very high current demand in medium energy requirements. Generally they are employed in hybrid systems together with batteries and fuel cells. In this way, the supercapacitors have an important role as a supplementary power source to decrease the response time, improving stability, power supply quality. An extensive bibliographic research has allowed identifying the main applications related to power electronics. After a brief presentation of fundamental aspects, the applications are discussed.

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