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Dual Output and High Voltage Gain DC-DC Converter for PV and Fuel Cell Generators Connected to DC Bipolar Microgrids
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Orientador(es)
Resumo(s)
This paper introduces a new topology for a DC-DC converter with bipolar output and high voltage gain. The topology was designed with the aim to use only one active power switch. Besides the bipolar multiport output and high voltage gain this converter has another important feature, namely, it has a continuous input current. Due to the self-balancing bipolar outputs, the proposed topology is suitable for bipolar DC microgrids. Indeed, the topology balancing capability can achieve the two symmetrical voltage poles of bipolar DC microgrids. Furthermore, it is possible to create a midpoint in the output of the converter that can be directly connected to the ground of the DC power supply, avoiding common-mode leakage currents in critical applications such as transformerless grid-connect PV systems. The operating principle of the proposed topology will be supported by mathematical analysis. To validate and verify the characteristics of the presented topology, several experimental results are shown.
Descrição
This work was supported by the National Funds through Fundacao para a Ciencia e a Tecnologia (FCT) under Grant UIDB/50021/2020 and Grant UIDB/00066/2020.
Palavras-chave
bipolar DC microgrid DC-DC converter fuel Cell Photovoltaic (PV) systems single-switch General Computer Science General Materials Science General Engineering SDG 7 - Affordable and Clean Energy