**6. Experimental Results**

In order to validate the e ffectiveness of the PFCS and the proposed DCV restoration algorithm, experiments based on the laboratory testbed system were carried out. Figure 18 shows the configuration of the experimental system including three power converters to connect the UG, battery, and WPGS in DCMG. This figure also shows a lithium-ion battery and a wind turbine emulator which is constructed by a PMSG and an induction machine. Similar to the simulations, the experiments are performed in three cases: the grid-connected case, islanded case, and the case of grid fault detection delay.

**Figure 18.** Configuration of the experimental system.
