Averaged modelling of switched-inductor cells considering conduction losses in discontinuous mode
Averaged modelling of switched-inductor cells considering conduction losses in discontinuous mode
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DOI：
10.1049/iet-epa:20060329
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发表时间：
2007-05
影响因子：
1.7
通讯作者：
A. Davoudi;J. Jatskevich;P. Chapman
中科院分区：
文献类型：
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作者：
A. Davoudi;J. Jatskevich;P. Chapman
许多PWMDC-DC转换器包含一个开关电感单元，它需要一个平均值模型。然而，与电池组件相关的寄生因素的存在使精确平均模型的开发变得复杂，尤其是对于不连续的传导模式。这里描述了一种改进的全阶、大信号平均开关单元。所提出的平均单元考虑了能量守恒原理所要求的传导损耗，并且提供了更精确的占空比约束。最终的模型在预测大信号、时域瞬变以及小信号、频域特性方面优于先前建立的几个平均单元
Many PWM DC-DC converters contain a switched-inductor cell for which an average-value model is required. However, the presence of parasitics associated with the cell's components complicates the development of accurate averaged models, especially for the discontinuous conduction mode. Here is described an improved full-order, large-signal averaged switching cell. The proposed averaged cell takes into account conduction losses as required by the energy conservation principle and provides a more accurate duty-ratio constraint. The final model shows improvement over several previously established averaged cells in predicting large-signal, time-domain transients as well as small-signal, frequency-domain characteristics