This paper presents a detailed design methodology for a DC-DC converter based on the recent Quasi-Y Source impedance network, which has interesting characteristics for applications related to renewable energy sources. Despite the advantages of this particular impedance network, there is a lack in the current literature, of details regarding the design of the diode and coupled inductors, and a description of its leakage inductance impact on the performance of the Quasi-Y-Source based converter. Therefore, this work presents design guidelines for the coupled inductors including core material choice criteria and optimization of windings combinations. Several analyses are conducted, through computational simulation, with respect to voltage stresses on the converter switches. The simulations results are compared with experimental implementation considering different voltage gain B operational scenarios. The obtained results shows that the proposed approach is useful to design: (a) Quasi-Y Source DC-DC converter components; (b) Evaluate the best coupled inductors configuration; (c) Implement closed loop controllers and snubbers circuits. A discussion evaluating the converter characteristics is made, exploring possible solutions to problems related to real operation scenarios.

中文翻译：

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准 Y 源网络：DC-DC 应用的设计和分析方法


本文提出了一种基于最新准 Y 源阻抗网络的 DC-DC 转换器的详细设计方法，该方法对于与可再生能源相关的应用具有有趣的特性。尽管这种特定阻抗网络具有优势，但当前文献中缺乏有关二极管和耦合电感器设计的详细信息，也缺乏其漏电感对基于准 Y 源的转换器性能影响的描述。因此，这项工作提出了耦合电感器的设计指南，包括磁芯材料选择标准和绕组组合的优化。通过计算模拟，对转换器开关上的电压应力进行了多项分析。将仿真结果与考虑不同电压增益 B 操作场景的实验实现进行比较。所得结果表明，所提出的方法可用于设计： (a) 准 Y 源 DC-DC 转换器组件； (b) 评估最佳耦合电感器配置； (c) 实施闭环控制器和缓冲器电路。讨论了评估转换器特性，探索与实际操作场景相关的问题的可能解决方案。