Joint Power Management of Telecom Exchanges and Electric Vehicles Using Hybrid AC-DC Microgrid

The penetration of Dispersed Energy Resources (DERs), such as photovoltaic systems and wind energy systems is progressively increasing in conventional power systems. However, the DERs bring the problems of AC-DC-AC conversion losses, increase in component cost, and reduction in power quality. Moreover, the power demand of DC load, such as telecom exchange networking system and Electric Vehicles (EVs) are increasing in recent times. In conventional power systems, the DC loads are connected to main AC grid through converters that result in an increased cost for the telecom networking system, and occurrence of AC to DC power conversion loss. The hybrid AC-DC microgrid for the distributed AC and DC power generations is a suitable solution to reduce the multiple reverse conversions within the telecom exchange. Therefore, in this paper, a droop controlled scheme is used for the hybrid AC-DC microgrid within a telecom exchange that manage voltage and power regulation, and energy management between AC and DC microgrids. The droop controller provides need based power sharing between AC and DC microgrids and enhance operational reliability of the DC loads, such as telecom exchanges and EVs.