**7. Conclusions**

For the purpose of enhancing the reliability of DCMG and ensuring the system power balance under various conditions, this paper has presented an improved PMS for MAS-based distributed control of DCMG under communication network problems. The main contributions of this paper can be summarized as follows:


In order to validate the feasibility of the PMS and the proposed schemes, the simulations based on PSIM and the experiments based on the laboratory DCMG testbed have been carried out. In the experimental setup, the WPGS is emulated by coupled PMSM-induction machine. Comprehensive simulation and experimental results have proven the usefulness of the PMS and the proposed reliability improvement schemes under various conditions, especially, under communication network problem. As a result, the proposed DCV restoration and grid recovery identification schemes can contribute to enhance the reliability of DCMG system.

**Author Contributions:** T.V.N. and K.-H.K. conceived the main concept of the control structure and developed the entire system. T.V.N. carried out the research and analyzed the numerical data with guidance from K.-H.K. T.V.N. and K.-H.K. collaborated in the preparation of the manuscript. All authors have read and agreed to the published version of the manuscript.

**Funding:** This study was supported by the Advanced Research Project funded by the SeoulTech (Seoul National University of Science and Technology).

**Conflicts of Interest:** The authors declare no conflict of interest.
