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    Small-Signal Transfer Functions of the Classical Boost Converter Supplied by Ultracapacitor Banks

    165144_165144.pdf (2.389Mb)
    Access Status
    Open access
    Authors
    Rajakaruna, Sumedha
    Date
    2007
    Type
    Conference Paper
    
    Metadata
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    Citation
    Rajakaruna, R.M.A.S. 2007. Small-Signal Transfer Functions of the Classical Boost Converter Supplied by Ultracapacitor Banks, 2nd IEEE Conference on Industrial Electronics and Applications 2007, May 23 2007, pp. 692-697. Singapore: IEEE.
    Source Title
    Proceedings of the 2nd IEEE Conference on Industrial Electronics and Applications 2007
    Source Conference
    2nd IEEE Conference on Industrial Electronics and Applications 2007
    DOI
    10.1109/ICIEA.2007.4318495
    ISBN
    9781424407378
    School
    Department of Electrical and Computer Engineering
    Remarks

    Copyright © 2007 IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

    URI
    http://hdl.handle.net/20.500.11937/18553
    Collection
    • Curtin Research Publications
    Abstract

    Ultracapacitor is an emerging device for energy storage that can replace batteries in some short-term applications. Due to the fact that the terminal voltage of an ultracapacitor varies with the level of energy stored, a power electronic converter with voltage boosting capability is usually needed at its terminals to interface with a load operating at a constant voltage. For the case of a classical boost dc-dc converter supplying a resistive load by drawing energy from a bank of ultracapacitors, the paper derives small-signal transfer functions by considering a time-varying steady-state. To reduce the complexity of resulting exact expressions of poles, highly accurate approximate expressions are also derived. Furthermore, it compares how the control characteristics change when a constant voltage source such as a battery replaces the ultracapacitor bank. A numerical example is presented to demonstrate the accuracy of the approximate values of poles and zeros and to describe how the poles and zeros vary with the duty ratio.

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