Implementation and experimental set-up of a Modular Multilevel Converter in a Multi Terminal DC/AC transmission network

In this paper the realization of a Multi Terminal DC pilot is presented. 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 Energy buffering of the converter will allow the converter to sustain either AC or DC grids. The operation of the converter is simulated together with the first experimental results of the implementation.