The nonavailability of fossil fuels and the shortcomings of nonconventional energy sources taking place in the environment lead the research and development towards alternative and clean energy sources such as renewable energy sources. Renewable or nonconventional energy resources are being used to meet ever-increasing energy demand. The photo voltaic (PV) energy is the right choice of renewable energy for small voltage DC distribution systems, due to their advantages. But this energy source can produce low output power at the utility grid. Hence, to step up this low input voltage to high value for a range of high-voltage applications, DC-DC converters are integrated to the DC microgrids by means of PV system. The present work elaborates the modified SEPIC converter (MSC) designed based on the traditional SEPIC with a boost-up module. In comparison with conventional or traditional SEPIC converter, the proposed MSC produces high voltage gain and continuous current to the DC microgrids. Furthermore, MSC is operated with only one controlled switch. The proposed converter design improves the efficiency, output voltage, and continuous output current of the DC microgrids. This entire work is completed with PSIM, and finally, numerical simulation results prove the possibility of the MSC with PV-powered DC microgrids, and also the dynamic response of MSC for DC microgrid loads enhances the regulated output voltage and continuous output current of DC loads.

中文翻译：

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用于可再生能源构建的直流微电网的改进型 SEPIC 转换器的实现

化石燃料的不可利用性和非常规能源在环境中的缺点导致研究和开发转向替代和清洁能源，例如可再生能源。可再生能源或非常规能源正被用于满足不断增长的能源需求。光伏（PV）能源由于其优势，是小电压直流配电系统可再生能源的正确选择。但是这种能源可以在公用电网中产生低输出功率。因此，为了将这种低输入电压提高到适用于一系列高压应用的高值，直流-直流转换器通过光伏系统集成到直流微电网中。目前的工作阐述了基于带有升压模块的传统 SEPIC 设计的改进型 SEPIC 转换器 (MSC)。与传统或传统的 SEPIC 转换器相比，所提出的 MSC 为直流微电网产生高电压增益和连续电流。此外，MSC 仅通过一个受控开关进行操作。所提出的转换器设计提高了直流微电网的效率、输出电压和连续输出电流。这整个工作是用PSIM完成的，最后，数值仿真结果证明了MSC与光伏供电的直流微电网的可能性，并且MSC对直流微电网负载的动态响应提高了直流负载的稳压输出电压和连续输出电流. 所提出的转换器设计提高了直流微电网的效率、输出电压和连续输出电流。这整个工作是用PSIM完成的，最后，数值仿真结果证明了MSC与光伏供电的直流微电网的可能性，并且MSC对直流微电网负载的动态响应提高了直流负载的稳压输出电压和连续输出电流. 所提出的转换器设计提高了直流微电网的效率、输出电压和连续输出电流。这整个工作是用PSIM完成的，最后，数值仿真结果证明了MSC与光伏供电的直流微电网的可能性，并且MSC对直流微电网负载的动态响应提高了直流负载的稳压输出电压和连续输出电流.