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Full-order averaging modelling of zero-voltage-switching phase-shift bidirectional DC-DC converters

机译:零电压开关相移双向DC-DC转换器的全阶平均建模

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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.
机译:研究了零电压开关(ZVS)相移双向DC-DC转换器的全阶小信号建模和动态分析。为了建立离散时间平均模型,提出了一种通用的建模方法。该全阶模型考虑了泄漏电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。以双有源桥式DC-DC转换器为例,推导了控制至输出电压的传递函数,以其为例来说明建模过程。实验结果证实,新模型可以正确地预测高达开关频率三分之一的小信号频率响应,并且比先前提出的模型更准确。

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    《Power Electronics, IET》 |2010年第3期|p.400-410|共11页
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