Title :
A Predictive Control With Flying Capacitor Balancing of a Multicell Active Power Filter
Author :
Defay, Francois ; Llor, Ana-Maria ; Fadel, Maurice
Author_Institution :
LAPLACE Lab., Univ. de Toulouse, Toulouse
Abstract :
Unlike traditional inverters, multicell inverters have the following advantages: lower switching frequency, high number of output levels, and less voltage constraints on the insulated-gate bipolar transistors. Significant performances are provided with this structure which is constituted with flying capacitors. This paper deals with a predictive and direct control applied to the multicell inverter for an original application of this converter: a three-phase active filter. To take advantage of the capabilities of the multicell converter in terms of redundant control states, a voltage control method of flying capacitor is added, based on the use of a switching table. Flying capacitor voltages are kept on a fixed interval, and precise voltage sensors are not necessary. The association of predictive control and voltage balancing increases considerably the bandwidth of the active filter.
Keywords :
active filters; insulated gate bipolar transistors; invertors; power capacitors; power filters; predictive control; switching convertors; voltage control; flying capacitor; insulated-gate bipolar transistor; multicell converter; multicell inverter; predictive control; redundant control; switching table; three-phase active power filter; voltage control method; Active power filter; active power filter; flying capacitor; multicell inverter; switching table;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2008.927989