Efficiency-Oriented Optimal Design of the LLC Resonant Converter Based on Peak Gain Placement

    Authors

    X. Fang; H. B. Hu; F. Chen; U. Somani; E. Auadisian; J. Shen;I. Batarseh

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    IEEE Trans. Power Electron.

    Keywords

    Converter design; dc-dc power conversion; optimization; resonant; converter; STEADY-STATE ANALYSIS; Engineering, Electrical & Electronic

    Abstract

    The LLC resonant converter topology is widely used in dc-dc converter applications due to its advantages in achieving high efficiency and high power density. However, due to the complexity in the analysis, the converter lacks a clear design guideline on the selection of resonant tank parameters. In this paper, an optimization method is developed based on the operation mode analysis and peak gain placement. Following this approach, the converter can minimize the conduction loss while maintaining the required gain range. A 400-W, 400-V output and 25-38 V input LLC converter is built using the proposed method, which achieves above 98% peak efficiency. As a comparison, the conventional searching method is used to reselect the LLC parameters for the same specifications, and the experimental results show that the optimal design has better performance.

    Journal Title

    Ieee Transactions on Power Electronics

    Volume

    28

    Issue/Number

    5

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    2285

    Last Page

    2296

    WOS Identifier

    WOS:000314699700018

    ISSN

    0885-8993

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