Veenstra, M.Rufer, A.2006-07-102006-07-10200310.1109/IAS.2003.1257502https://infoscience.epfl.ch/handle/20.500.14299/232489WOS:000187891400029Hybrid asymmetric multi-level inverters promise significant improvements for medium-voltage industrial drives. Floating sub inverters without feeding can only supply reactive power. An on-line non-linear model-predictive controller stabilizes their intermediate-circuit voltages in steady-state and during transients, as demonstrated by simulations and measurements. A pre-charge method assures converter start-up without additional equipment.text::conference output::conference proceedings::conference paper