Renewable powered dc microgrid is more cost-effective, simple, reliable, highly efficient, and scalable than the traditional electric grid. This paper provides an overview of high gain dc converter topologies for dc microgrids. This research's primary objective is to impart a unique extensive, comparative, and perceptive analysis in high gain converter configurations. The most recently reported research articles are considered for discussion in this paper. Initially, based on the structural configurations, the converters are segregated and are grouped into four categories, such as Replacement, Reduced Redundant Power Processing (R²P²), Incorporation, Integration (R²I²) techniques. Secondly, based on the dynamic and steady-state analysis, the topological converter configurations are comparatively analyzed. A few topologies' mathematical modeling is also discussed to obtain a comprehensive insight into the converter's dynamic behavior. An extensive analysis, comparisons, and assessment of these converters with diverse configurations are acquainted with tables and figures are presented for choosing an appropriate converter suitable for dc grid application. The pros and cons of the topology derivation under each categorization are presented for benefitting the researchers in selecting the topological configuration method. In the end, the comparison results of the high gain converter clusters are summarized, and recommendations are given, which leads to the guidelines for selecting a significant high gain topology for a specific application. Furthermore, the constraints considered for topology derivation with the type of analysis carried out are presented. This gives a way to find the scope for future research under this area which is finally offered. This study will also provide an insight into the derivation of several configurations of the novel high gain dc-dc converter in the field of dc microgrid.

可再生供电的直流微电网比传统电网更具成本效益、简单、可靠、高效和可扩展。本文概述了用于直流微电网的高增益直流转换器拓扑。这项研究的主要目标是在高增益转换器配置中提供独特的广泛、比较和感知分析。最近报道的研究文章被考虑在本文中讨论。最初，基于结构配置，转换器被隔离并分为四类，例如替换、减少冗余功率处理（R ² P ²）、合并、集成（R ² I ²) 技术。其次，基于动态和稳态分析，对拓扑转换器配置进行了比较分析。还讨论了一些拓扑的数学建模，以获得对转换器动态行为的全面了解。对这些具有不同配置的转换器进行了广泛的分析、比较和评估，并提供了表格和数字，用于选择适合直流电网应用的合适转换器。介绍了每种分类下拓扑推导的优缺点，以利于研究人员选择拓扑配置方法。最后，总结了高增益转换器集群的比较结果，并给出了建议，这导致了为特定应用选择显着高增益拓扑的指南。此外，还介绍了所进行的分析类型的拓扑推导所考虑的约束条件。这提供了一种方法，可以找到最终提供的该领域下未来研究的范围。本研究还将深入了解直流微电网领域中新型高增益 dc-dc 转换器的几种配置的推导。