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Non-linear modal analysis of transient interaction behaviours in SEPIC DC–DC converters

机译:SEPIC DC-DC转换器中瞬态相互作用行为的非线性模态分析

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摘要

This study investigates the transient interaction behaviours in SEPIC DC-DC converters by using non-linear modal series method. Based on the derived non-linear model, the analytical approximate solutions are obtained to characterise the transient behaviours of the converters. Then, fundamental modal analysis is performed to identify the correlation among system parameters, fundamental modes and state variables so that system key parameters are subsequently acquired. In addition, the second-order interaction indices are evaluated in order that the underlying mechanism of non-linear interaction behaviours is uncovered. Finally, theoretical analysis is verified by circuit experiments. These results are beneficial to the improvement of the transient behaviours and the system reliability.
机译:本研究通过非线性模数串联方法研究SEPIC DC-DC转换器中的瞬态相互作用行为。基于导出的非线性模型,获得解析近似解以表征转换器的瞬态行为。然后,执行基本模态分析以识别系统参数,基本模式和状态变量之间的相关性,以便随后获取系统关键参数。另外,对二阶相互作用指数进行评估,以便揭示非线性相互作用行为的潜在机理。最后,通过电路实验验证了理论分析。这些结果有利于改善瞬态行为和系统可靠性。

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