Title :
A New Neutral-Point Voltage Control for Single-Phase Three-Level NPC Converters
Author :
Cobreces, Santiago ; Bueno, Emilio J. ; Rodriguez, F.J. ; Salaet, J. ; Bordonau, Josep
Author_Institution :
Dept. Electron., Universidad de Alcala, Alcala de Henares
Abstract :
This paper proposes a new control scheme for the neutral-point balance in single-phase three level neutral-point clamped converters. The control is addressed, considering the plant under study a non-linear time-variant system and applying a quasi-exact linearization to it. This way it is possible to apply classic control techniques. The method depicted is simple, general and suitable to back and boost topologies as well as to inverter or rectifier operating modes. Correct operation is verified under both simulation environment and experimental operation. Experimental operation has been verified with linear and non-linear load
Keywords :
nonlinear control systems; power convertors; time-varying systems; voltage control; inverter; neutral-point balance; neutral-point clamped converters; neutral-point voltage control; nonlinear time-variant system; quasiexact linearization; rectifier; single-phase three-level NPC converters; Analog-digital conversion; Capacitors; Control design; Control systems; Pulse width modulation; Pulse width modulation inverters; Rectifiers; Switching converters; Topology; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE
Conference_Location :
Jeju
Print_ISBN :
0-7803-9716-9
DOI :
10.1109/PESC.2006.1711807
