Cell balancing circuit implementation with DC/DC converters using super capacitor equivalent circuit parameters

Jaehoon Jang, Junghyun Nam, Jiyoon Yoo

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    9 Citations (Scopus)

    Abstract

    Supercapacitors, also known as ultracapacitors, offer an alternative source that substitute or operate in parallel with batteries for motor drive in hybrid electric vehicles (HEV). The supercapacitors have to be series-connected with 60 ones, which have a 162V specification (2.7V per cell), in a pack for applying to HEV. As the impedance of each cell in a pack is different from each others, a cell balancing circuit is mandatory for stable operation. This paper presents electrical equivalent circuit parameters of supercapacitors. After that, several existing cell balancing methods and their advantages and disadvantages are discussed using the parameters. This paper also presents a cell balancing method with flying capacitor and DC/DC converter. The presented method to design a cell balancing circuit with flying capacitor and DC/DC converter by using the electrical equivalent circuit of supercapacitor is an advantageous one because it is easy to simulate, save time and cost.

    Original languageEnglish
    Title of host publicationVPPC 2007 - Proceedings of the 2007 IEEE Vehicle Power and Propulsion Conference
    Pages646-653
    Number of pages8
    DOIs
    Publication statusPublished - 2007
    EventVPPC 2007 - 2007 IEEE Vehicle Power and Propulsion Conference - Arlington, TX, United States
    Duration: 2007 Sept 92007 Sept 12

    Publication series

    NameVPPC 2007 - Proceedings of the 2007 IEEE Vehicle Power and Propulsion Conference

    Other

    OtherVPPC 2007 - 2007 IEEE Vehicle Power and Propulsion Conference
    Country/TerritoryUnited States
    CityArlington, TX
    Period07/9/907/9/12

    ASJC Scopus subject areas

    • Automotive Engineering
    • Control and Systems Engineering

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