Stability analysis of PV-based DC microgrid with communication delay

The emergence of the renewable energy sources such as the PV, fuel cells and storage batteries, in addition to the consumer electronic have shifted the view to DC Microgrids. In the DC Microgrid the energy sources, storage units and loads are connected to a DC Bus through DC/DC converters. In order to achieve the control tasks and for energy management, the sources should transfer their information through a kind of network. In this paper we present a networked system approach for PV based DC Microgrid. The DC Microgrid is modeled using Simulink/Matlab. The PV sources controllers communicate through wireless network to achieve current sharing. The required communication bandwidth is calculated. The controller achieves good performance even with the fluctuations in the PV sources.