In solar photovoltaic (PV)-based DC microgrid systems, the voltage output of the classical DC–DC converter produces very less voltage as a result of poor voltage gain. Therefore, cascaded DC–DC boost converters are mandatory for boosting the voltage to match the DC microgrid voltage. However, the number of devices utilized in the DC–DC conversion stage becomes higher and leads to more losses. Thereby, it affects the system efficiency and increases the complication of the system and cost. In order to overcome this drawback, a novel double-boost DC–DC converter is proposed to meet the voltage in DC microgrid. Also, this paper discusses the detailed operation of maximum power point (MPP) tracking techniques in the novel double-boost DC–DC converter topology. The fundamental [Formula: see text]–[Formula: see text] and [Formula: see text]–[Formula: see text] characteristics of solar photovoltaic system, operational details of MPP execution and control strategies for double-boost DC/DC converter are described elaborately. The proposed converter operation and power injection into the DC microgrid are verified through the real-time PSCAD simulation and the validation is done through the experiment with hardware module which is indistinguishable with the simulation platform.

中文翻译：

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一种用于直流微电网应用的高增益新型双升压转换器

在基于太阳能光伏 (PV) 的直流微电网系统中，由于电压增益差，经典 DC-DC 转换器的电压输出产生的电压非常低。因此，必须使用级联 DC-DC 升压转换器来提升电压以匹配直流微电网电压。然而，在 DC-DC 转换阶段使用的设备数量会变得更多，并导致更多的损耗。从而影响系统效率，增加系统复杂度和成本。为了克服这个缺点，提出了一种新型的双升压DC-DC转换器来满足直流微电网中的电压。此外，本文还讨论了新型双升压 DC-DC 转换器拓扑中最大功率点 (MPP) 跟踪技术的详细操作。基本的【公式：见正文】-【公式：见正文】和【公式：见正文】-【公式：见正文]太阳能光伏系统的特点，MPP执行的操作细节和双升压DC/DC转换器的控制策略进行了详细描述。通过实时 PSCAD 仿真验证了所提出的变流器运行和注入直流微电网的功率，并通过与仿真平台无法区分的硬件模块进行了实验。