A Predictive Control With Flying Capacitor Balancing of a Multicell Active Power Filter

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...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2008-09, Vol.55 (9), p.3212-3220
Main Authors: Defay, F., Llor, A.-M., Fadel, M.
Format: Article
Language:English
Subjects:
Active filters
Active power filter
Automatic
Capacitive sensors
Capacitors
Electric power
Engineering Sciences
flying capacitor
Insulated gate bipolar transistors
Insulation
Inverters
multicell inverter
Predictive control
Switching converters
Switching frequency
switching table
Voltage control
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Summary: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.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2008.927989