DocumentCode :
713280
Title :
Reducing circulating currents in interleaved converter legs under selective harmonic elimination pulse-width modulation
Author :
Konstantinou, Georgios ; Pou, Josep ; Capella, Gabriel J. ; Ceballos, Salvador ; Agelidis, Vassilios G.
Author_Institution :
UNSW Australia, Sydney, NSW, Australia
fYear :
2015
fDate :
17-19 March 2015
Firstpage :
1136
Lastpage :
1141
Abstract :
Interleaving of voltage source converter legs enables higher output currents per phase, effectively increasing the power rating without increasing semiconductor ratings. Different switching patterns between the converter legs increase the number of Thevenin output voltage levels and, hence, the quality of the waveform but also generate circulating currents within one phase. This paper proposes a controller for interleaved converter legs under selective harmonic elimination pulse-width modulation (SHE-PWM) aimed at reducing the circulating current within the legs of each phase. The controller is used in combination with optimally selected SHE-PWM patterns to minimise the peak value of the circulating current. The proposed controller is applied in two interleaved three-level active neutral-point-clamped converters and simulation results demonstrate their performance.
Keywords :
PWM power convertors; electric current control; power conversion harmonics; switching convertors; voltage control; SHE-PWM; Thevenin output voltage levels; circulating current generation; circulating current peak value minimisation; circulating current reduction; interleaved three-level active neutral-point-clamped converters; interleaved voltage source converter legs; power rating; selective harmonic elimination pulse-width modulation; switching patterns; waveform quality; Harmonic analysis; Inductors; Legged locomotion; Modulation; Switches; Switching frequency; Interleaving; SHE-PWM; multilevel converters; multilevel waveforms; parallel legs; selective harmonic elimination; voltage source converters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Technology (ICIT), 2015 IEEE International Conference on
Conference_Location :
Seville
Type :
conf
DOI :
10.1109/ICIT.2015.7125250
Filename :
7125250
Link To Document :
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