| Abstract |
In this paper, a new modeling method based on the equivalent Thevenin circuit is proposed for inverterinterfaced microgrids. The proposed method approximates the entire network connected to eachinverter with an equivalent Thevenin circuit. The equivalent circuit is studied in two forms: staticimpedance and dynamic second-order RL branch. The static impedance equivalent circuit provides agood steady state but not a good transient response. To cope with this issue, the static impedance isreplaced with a dynamic second-order RL branch, which results in appropriate transients. Both staticand dynamic models are validated using a microgrid test system simulated inMATLAB/SimPowerSystems. |
