A Detailed Review of MMC Circuit Topologies and Modelling Issues

MMC is a promising technology for MTDC systems and would transform into the concept of Supergrids in near future. The salient features are modularity, reduced dv/dt di/dt stress on switches, voltage power scalability, inherent fault blocking capacity, transformerless operation, improved quality. However, there some technical issues challenges to be critically analysed addressed. There room development novel enhanced based SM configurations enable higher efficiency, quality, compactness, DC capacity. Moreover, efficient accurate models required studies grids during steady-state transient conditions. Literature review suggests need studying comparing different modelling approaches because no technique can best suited all applications. main contribution this paper provide comprehensive recent developments terms configurations. This also presents an in-depth systematic comparison MMC, which appropriate selection model target desired accuracy efficiency. Finally, associated research future trends presented.