Methodology for synthesis of high‐gain step‐up DC–DC converters based on differential connections,International Journal of Circuit Theory and Applications

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Methodology for synthesis of high‐gain step‐up DC–DC converters based on differential connections
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-10-30 , DOI: 10.1002/cta.2892
Marcos A. Salvador ₁ , Jessika M. Andrade ₂ , Telles B. Lazzarin ₂ , Roberto F. Coelho ₂

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This paper presents a new methodology for synthesis of high‐gain step‐up DC–DC converters. This methodology is based on the differential connection of two basic non‐isolated DC–DC converters, in which the output voltages are respectively positive and negative with reference to a common terminal. Any load connected between these positive and negative terminals is subjected to a differential voltage equivalent to the sum of the voltages individually synthetized by each basic converter. When only non‐isolated basic DC–DC converters (boost, buck–boost, Ćuk, single‐ended primary‐inductor converter, and Zeta) are considered, six differential converters may be derived by the proposed methodology; nevertheless, voltage lifting techniques based on gain cells can also be applied to further extend the gain, resulting in others high‐gain topologies. Besides the proposition of the methodology, the paper investigates the operating principle of the derived converters under different modulation strategies, evaluates the possibility of eliminating redundant components after integration, and correlates the obtained converters with already existing topologies. In fact, it is demonstrated that several high‐gain step‐up DC–DC converters previously published could be addressed as particular cases of differential connections of basic converters. Experimental results are presented to validate the methodology herein proposed.

中文翻译：

基于差分连接的高增益升压DC-DC转换器综合方法

本文提出了一种用于合成高增益升压DC-DC转换器的新方法。该方法基于两个基本非隔离式DC-DC转换器的差分连接，其中相对于一个公共端子，输出电压分别为正电压和负电压。连接在这些正极端子和负极端子之间的任何负载都将受到一个差分电压，该差分电压等于每个基本转换器单独合成的电压之和。当仅考虑非隔离式基本DC-DC转换器（升压，降压-升压，Ćuk，单端初级电感器转换器和Zeta）时，通过所提出的方法可以得出六个差分转换器。尽管如此，基于增益单元的电压提升技术也可以应用于进一步扩展增益，从而产生其他高增益拓扑。除了该方法的命题之外，本文还研究了衍生转换器在不同调制策略下的工作原理，评估了在集成后消除冗余组件的可能性，并将获得的转换器与现有拓扑相关联。实际上，事实证明，先前发布的几种高增益升压DC-DC转换器可以作为基本转换器的差分连接的特殊情况解决。提出实验结果以验证本文提出的方法。并将获得的转换器与现有拓扑相关联。实际上，事实证明，先前发布的几种高增益升压DC-DC转换器可以作为基本转换器的差分连接的特殊情况来解决。提出实验结果以验证本文提出的方法。并将获得的转换器与现有拓扑相关联。实际上，事实证明，先前发布的几种高增益升压DC-DC转换器可以作为基本转换器的差分连接的特殊情况来解决。提出实验结果以验证本文提出的方法。

更新日期：2020-10-30

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