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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/7890

    Title: LLC串聯諧振轉換器模型建立與分析
    Modelling and Analysis of an LLC Series Resonant Converter
    Authors: 林沛蓉(Pei-Jung Lin)
    陳揚斌(Yang-Pin Chen)
    林恩(En Lin)
    羅有綱(Yu-Kang Lo)
    邱煌仁(Huang-Jen Chiu)
    Keywords: LLC SRC equivalent Model
    double output
    single output
    Stray capacitance
    Date: 2008-09-05
    Issue Date: 2010-01-12 14:16:23 (UTC+8)
    Abstract: This thesis focuses on derivation and analysis of a LLC
    series resonant converter model by a 240W single-output and a
    340W double-output half-bridge series resonant converter. First of
    all, the basic operating principle of series resonant converters is
    discussed in detail. Besides the significant parameters, such as
    resonant capacitors and inductors, turn ratio and magnetizing
    inductance, the on-state resistance of MOSFETs, the leakage
    inductors in the secondary side of the transformers, stray
    capacitors, line loss and ground plane are considered in the LLC
    equivalent model. Furthermore, the remaining loss of the
    secondary side is approximated as a parallel capacitor in the
    resonant tank. Thus, the output voltage is obtained by
    MATHCAD with above parameters.
    According to previous experiments, a revised LLC
    equivalent model is presented in the thesis. By doing simulation
    with the revised model, the frequency response of the output
    voltage gain can be shown in a chart with better accuracy and the
    operation frequency of converters is clearly predicted. In addition,
    in the case of verifying this model, a single-output and a
    double-output LLC-type resonant converter are implemented as
    following specifications: 12V/20A for the former and 12V/20A
    and 5V/20A for the latter with 400V input voltage. The deviation
    between the real output voltage and the simulated one is reduced
    from 35.0% to 3%. To sum up, the revised LLC equivalent model
    is proposed and improved with less deviation and much
    convenience in the LLC SRC convertor design.
    Relation: 台灣電子電力研討會暨展覽會
    Appears in Collections:[電機工程系所 ] 2008第七屆台灣電力電子研討會暨展覽會

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