Active Neutral-Point-Clamped Multilevel Converters

  title={Active Neutral-Point-Clamped Multilevel Converters},
  author={P. Barbosa and P. K. Steimer and Joachim Hans Georg Steinke and L. Meysenc and Manfred Winkelnkemper and Nikola L. Celanovic},
  journal={2005 IEEE 36th Power Electronics Specialists Conference},
This paper proposes a multilevel power conversion concept based on the combination of neutral-point-clamped (NPC) and floating capacitor converters. In the proposed scheme, the voltage balancing across the floating capacitors is achieved by using a proper selection of redundant switching states, and the neutral-point voltage is controlled by the classical dc offset injection. Experimental results are illustrated in the paper to demonstrate the system operation 
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