Robust Controller Design For A Series Resonant Converter

    Authors

    Z. Q. Wang; M. Sznaier; I. Batarseh;J. Y. Bu

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Aerosp. Electron. Syst.

    Keywords

    FEEDBACK-SYSTEMS; Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications

    Abstract

    Because of their reduced switching losses, allowing a higher operating frequency, dc-to-dc resonant converters have been used extensively in the design of smaller size and lighter weight power supplies. The steady state and dynamic behavior of both the conventional series and parallel resonant converters have been thoroughly analyzed and small-signal models around given nominal operating points have been obtained. These models have been used in the past to design controllers that attempted to keep the output voltage constant in the presence of input perturbations. However, these controllers did not take into account either load or components variations, and this could lead to instability in the face of component or load changes. Moreover, prediction of the frequency range for stability was done a posteriori, either experimentally or by a trial and error approach. In this paper we use mu-synthesis to design a robust controller for a series resonant converter (SRC). In addition to robust stability the design objectives include rejection of disturbances at the converter input while keeping the control input and the settling time within values compatible with a practical implementation.

    Journal Title

    Ieee Transactions on Aerospace and Electronic Systems

    Volume

    32

    Issue/Number

    1

    Publication Date

    1-1-1996

    Document Type

    Article

    Language

    English

    First Page

    221

    Last Page

    233

    WOS Identifier

    WOS:A1996TQ35200021

    ISSN

    0018-9251

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