Titre : Control allocation method for voltage control and active balancing of a multicellular flying capacitor inverter 

Auteurs : Abdelkader Bouarfa, Marc Bodson, Maurice Fadel,  

Revue : Control 

Numéro : Issue 1 

Volume : 2 

Date : 2018/10/25 

DOI : 10.21494/ISTE.OP.2018.0300 

ISSN : 2631-4924 

Résumé : An elegant way to exploit control redundancies available in multilevel converters is through the formulation of a constrained optimization problem. An interesting connection can be made with the so-called control allocation problems defined in over-actuated constrained systems. Redundancies and constraints are taken into account to achieve the best performance. In this paper, we introduce the first result of an investigation of control allocation methods for multilevel conversion. The method is dedicated to the flying-capacitor inverter with focus on the active balancing of capacitor voltages to ensure admissible blocking voltages for the switches. A linear program is formulated and solved by using the well-established simplex algorithm. Fast variations of the DC-bus voltage were applied in simulations. Disturbances are well rejected thanks to a highly reactive balancing, and a safe switching operation is ensured. 

Éditeur : ISTE OpenScience