Equivalent Circuit Modeling of LLC Resonant Converter

机译：LLC谐振转换器的等效电路建模

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LLC resonant converter is widely used in industry.rnHowever, up to now, no simple and accurate small-signalrnequivalent circuit model is available. This paper proposes anrnequivalent circuit model of LLC resonant converter. The simplernequivalent circuit model is derived based on modification andrnsimplification of extended describing function method. Thernmodel can well predicts the small-signal behaviors observed inrnLLC resonant converter, whenever switching frequency is below,rnclose to or above the resonant frequency. For the first time,rnanalytical expressions for control to output voltage, input tornoutput voltage, input impedance and output impedance arernprovided to aid close loop feedback design. Simplis simulationrnand experimental results are presented to prove the accuracy ofrnthe model.

机译：LLC谐振转换器在工业中得到了广泛的应用。然而，到目前为止，还没有简单，准确的小信号等效电路模型。本文提出了LLC谐振变换器的等效电路模型。基于扩展描述函数方法的修改和简化，推导了较简单的等效电路模型。每当开关频率低于，接近或高于谐振频率时，该模型都能很好地预测在LLC谐振变换器中观察到的小信号行为。首次提供用于控制输出电压，输入撕裂的输出电压，输入阻抗和输出阻抗的解析表达式，以帮助进行闭环反馈设计。通过简单的仿真和实验结果证明了该模型的准确性。

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来源
《2016 COES annual conference proceedings》|2016年|1-8|共8页
会议地点 Blacksburg VA(US)
作者
Shuilin Tian; Fred C. Lee; Qiang Li;
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作者单位

Center for Power Electronic Systems, Virginia Tech, Blacksburg, VA, 24061sltian87@vt.edu;

Center for Power Electronic Systems, Virginia Tech, Blacksburg, VA, 24061;

Center for Power Electronic Systems, Virginia Tech, Blacksburg, VA, 24061;

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原文格式 PDF
正文语种 eng
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关键词
LLC resonnant converter; small-signal model; equivlaent circuit model; extended describing function;

机译：LLC电阻转换器；；小信号模型；；等效电路模型；；扩展描述功能;

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专利

1. Equivalent Circuit Modeling of LLC Resonant Converter [J] . Tian Shuilin, Lee Fred C., Li Qiang IEEE Transactions on Power Electronics . 2020,第8期

机译：LLC谐振转换器的等效电路建模
2. Approximate Equivalent-Circuit Modeling and Analysis of Type-II Resonant Immittance Converters [J] . Mangesh Borage, K. V. Nagesh, M. S. Bhatia, Journal of power electronics . 2012,第2期

机译：II型谐振阻抗变换器的近似等效电路建模和分析
3. Small signal equivalent circuit modeling of resonant converters [J] . Witulski A.F., Hernandez A.F. IEEE Transactions on Power Electronics . 1991,第1期

机译：谐振转换器的小信号等效电路建模
4. Equivalent Circuit Modeling of LLC Resonant Converter [C] . Shuilin Tian, Fred C. Lee, Qiang Li Annual IEEE Applied Power Electronics Conference and Exposition . 2016

机译：LLC谐振转换器的等效电路建模
5. Small signal equivalent circuit modeling of resonant power converters. [D] . Witulski, Arthur Frank. 1988

机译：谐振功率转换器的小信号等效电路建模。
6. Dynamic Absorption Enhancement and Equivalent Resonant Circuit Modeling of Tunable Graphene-Metal Hybrid Antenna [O] . Zaka Ullah, Illani Nawi, Gunawan Witjaksono, 2020

机译：可调谐石墨烯-金属混合天线的动态吸收增强和等效谐振电路建模
7. Short-circuit protection of LLC resonant converter using voltages across resonant tank elements [O] . Denys Igorovych Zaikin 2015

机译：使用谐振回路元件两端的电压对LLC谐振转换器进行短路保护

Equivalent Circuit Modeling of LLC Resonant Converter

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