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Multilevel converters (MLC) are now a standard solution for medium-voltage (MV) high-power applications and several modulation techniques have been reported in literature. However, high-power applications require low device switching frequencies to reduce the dominating switching losses and thus improve the overall efficiency of drive system. On the other hand, total harmonic distortion (THD) of current...
In this work, a Back to Back converter based on a Diode Clamped Multilevel topology is presented. Both converters are controlled using model predictive approach. The control objective of the front-end converter is the DC bus voltage regulation with sinusoidal current and unity power factor, while the load converter drives an induction motor through predictive direct torque control. Both algorithms...
A model predictive current controller for multi-level inverter driving electrical machines is proposed that keeps the stator currents within given bounds around their respective references and balances the inverter's neutral point potential around zero. The inverter switch positions are directly set by the controller thus avoiding the use of a modulator. Admissible switching sequences are enumerated...
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