In the frame of a collaboration project within Swiss Competence Centre for Energy Research, a Multi Terminal DC pilot has been implemented. For the interaction with the medium voltage AC grid, a Modular Multilevel Converter has been designed for its features in low harmonic content, scalability, and flexibility. The control of converters in the MTDC network implements a non-dead band voltage control. The Energy buffering of the MMC converter will allow the converter to sustain either AC or DC grids. The operation of the MMC converter in an MTDC network containing three converter is verified experimentally in a reduced-scale pilot.