A Single-Switch DC-DC NonIsolated Buck-Boost Converter with Wide Voltage Gain for Bipolar DC Microgrids

Bipolar DC microgrids have started to play an important role in the context of DC microgrids. However, due to their structural particularities, the development of new topologies is necessary. In this context, this paper presents a new non-isolated DC-DC Buck-Boost converter. This converter is characterized by a simplified topological structure, as it requires only a single switch. Additionally, it is characterized by continuous input current. Although it uses only one switch, the converter's output currents will depend on the voltage level of the bipolar DC microgrid. Thus, if the microgrid experiences any imbalance, the converter will support the pole with the lower voltage level to help maintain the balance of the microgrid. The analysis and operation of this converter will be verified through simulation and experimental tests.