Comprehensive comparison of modular multilevel converter internal energy balancing methods

S Milovanović, D Dujić - IEEE Transactions on Power …, 2021 - ieeexplore.ieee.org
Stacking of floating structures, known as submodules or cells, provides the modular
multilevel converter with theoretically unlimited voltage scalability. However, such a …

Energy pulsation reduction in modular multilevel converters using optimized current trajectories

D Braeckle, P Himmelmann, L Gröll… - IEEE Open Journal …, 2021 - ieeexplore.ieee.org
In power electronics, the modular multilevel converter (MMC) is an easily scalable topology
with an high output voltage quality. It is suitable for the transmission of large amounts of …

Virtual capacitor concept for effective real-time mmc simulations

S Milovanovic, M Luo, D Dujic - PCIM Europe digital days 2021 …, 2021 - ieeexplore.ieee.org
In this paper, the real-time simulation model of the modular multilevel converter was split into
several independent parts through the use of the virtual capacitor concept. As a result, the …

Highly Dynamic AC Current Control for Modular Multilevel Converters

D Braeckle, P Himmelmann, S Mersche… - 2021 23rd European …, 2021 - ieeexplore.ieee.org
A highly robust and dynamic control of the MMC grid currents is necessary to ensure grid
stability. Based on a state space modelling of the MMC, a real time capable indirect …