Full-order averaging modelling of zero-voltage-switching phase-shift bidirectional DC-DC converters
Full-order averaging modelling of zero-voltage-switching phase-shift bidirectional DC-DC converters
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DOI：
10.1049/iet-pel.2008.0208
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发表时间：
2010-04
影响因子：
2
通讯作者：
Chuanhong Zhao;S. Round;J. Kolar
中科院分区：
文献类型：
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作者：
Chuanhong Zhao;S. Round;J. Kolar
研究了零电压开关（ZVS）相移双向 DC-DC 变换器的全阶小信号建模和动态分析。提出了一种通用建模方法来开发离散时间平均模型。该全阶模型考虑了漏感电流和谐振过渡间隔以实现 ZVS。漏感电流和谐振过渡间隔都是准确预测转换器动态行为的关键。推导了双有源桥DC-DC变换器的控制到输出电压传递函数，并以此为例说明了建模过程。实验结果证实，新模型可以正确预测高达开关频率三分之一的小信号频率响应，并且比之前提出的模型更准确。
Full-order small-signal modelling and dynamic analysis of zero-voltage-switching (ZVS) phase-shift bidirectional DC-DC converters is studied. A general modelling method is proposed to develop the discrete-time average model. This full-order model takes into account the leakage inductance current and the resonant transition intervals in order to realise ZVS. Both the leakage inductance current and the resonant transition intervals are the key to accurately predict the dynamic behaviour of the converter. A control-to-output-voltage transfer function is derived for the dual active bridge DC-DC converter, which is taken as an example to illustrate the modelling procedure. Experimental results confirm that the new model correctly predicts the small-signal frequency response up to one-third of the switching frequency and is more accurate than the previously presented models.