Novel high step‐up DC–DC converter with increased voltage gain per devices and continuous input current suitable for DC microgrid applications,International Journal of Circuit Theory and Applications

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Novel high step‐up DC–DC converter with increased voltage gain per devices and continuous input current suitable for DC microgrid applications
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-05-11 , DOI: 10.1002/cta.2804
Kazem Varesi ₁ , Naser Hassanpour ₂ , Saeid Saeidabadi ₃

Affiliation

This paper suggests a nonisolated noncoupled inductor‐based topology for direct current (DC)–DC converters for DC microgrids. The proposed configuration profits from advantages like high step‐up capability, continuous input current, simple structure, reduced normalized standing voltage (NSV) on switches/diodes, large gain per devices, common ground point between source‐load, and maximum power point tracking (MPPT) capability. Both the switches (T₁, T₂) are turned on/off simultaneously, which minimizes the number of operational modes and simplifies the control strategy. These properties lead to a more compact, less expensive, and lighter topology. The operational modes and steady‐state analysis as well as design considerations have been presented in detail. According to comparative analysis, the voltage conversion ratio per number of devices in suggested topology is higher than that of other similar topologies addressed in literature. The simulation results extracted from PSCAD/EMTDC software and the experimental outcomes obtained from laboratory‐scale prototype confirm the effectiveness and correct performance of proposed topology.

中文翻译：

新型高升压DC-DC转换器，具有提高的每台设备电压增益和连续输入电流，适用于DC微电网应用

本文提出了一种用于直流微电网的直流（DC）–DC转换器的非隔离，非耦合，基于电感的拓扑。提议的配置具有以下优点：升压能力强，连续输入电流，结构简单，开关/二极管上的归一化站立电压（NSV）降低，每个设备的增益大，源极负载之间的公共接地点以及最大功率点跟踪（MPPT）功能。两个开关（T ₁，T ₂）同时打开/关闭，这可以最大程度地减少操作模式的数量并简化控制策略。这些特性导致更紧凑，更便宜和更轻便的拓扑。详细介绍了工作模式和稳态分析以及设计注意事项。根据比较分析，建议拓扑中每器件数量的电压转换率高于文献中提到的其他类似拓扑。从PSCAD / EMTDC软件提取的仿真结果以及从实验室规模的原型获得的实验结果证实了所提出拓扑的有效性和正确性能。

更新日期：2020-05-11

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