Hybrid PV-WT Microgrid Stability Control Using Synchronverter Algorithm

The use of renewable energy in the microgrid has been increasing in recent years. The renewable integration causes several negative impacts on the stability of power grid such as power fluctuations and frequency instability. To overcome the aformentioned problems, adding additional inertia virtually is one solution to stabilize microgrid, virtual inertia is obtained by utilizing energy storage system (ESS) and power electronics along with reliable control mechanisms. One of the control concepts that can produce the ability to stabilize the microgrid is known as synchronverter. The synchronverter is a model that delivers the conventional synchronous generator model directly into the control algorithm. However, to the best of our knowledge, there are no research that uses synchronverter on microgrid connected to several renewable energy resources. In this research, the microgrid stability control will be carried out on a microgrid using the synchronverter method that consists of several components, namely photovoltaic (PV) and wind turbine (WT), local loads, and ESS. Furthermore, to study the robustness synchronverter algorithm is tested using a scenario namely parallel synchronverter with wind turbine. Therefore, the use of a synchronverter in different microgrid scenarios can clarify that the control algorithm can maintain the system stability. The results of this research indicate that the synchronverter algorithm can work properly in controlling the stability of the hybrid PV-WT microgrid system.