document: Multicell converters : active control and observation of flying-capacitor voltages The multicell converters introduced more than ten years ago make it possible to distribute the voltage constraints among series-connected switches and to improve the output waveforms -LRB- increased number of levels and apparent frequency -RRB- . The balance of the constraints requires an appropriate distribution of the flying voltages . This paper presents some solutions for the active control of the voltages across the flying capacitors in the presence of rapid variation of the input voltage . The latter part of this paper is dedicated to the observation of these voltages using an original modeling of the converter
doc_bio_tags: B I O B I O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O
extractive_keyphrases: multicell converters active control input voltage
abstractive_keyphrases: flying-capacitor voltages kalman filtering multilevel systems nonlinear systems power electronics power systems harmonics series-connected switches output waveforms improvement