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Título:
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On improving phase-shifted PWM for flying capacitor multilevel converters
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Autor/a:
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Ghias, Amer M.Y.M.; Pou Félix, Josep; Capellá Frau, Gabriel José; Acuna, Pablo; Agelidis, Vassilios
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Otros autores:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. TIEG-P - Terrassa Industrial Electronics Group -Power |
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Abstract:
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This letter proposes a phase-shifted pulse-width modulation (PS-PWM) technique for the flying capacitor (FC) multilevel converter that improves the quality of the line-to-line voltages. In traditional PS-PWM, the line-to-line voltages include intervals that switch between nonadjacent voltage levels, which deteriorates the harmonic performance. The proposed PS-PWM constantly achieves line-to-line voltages with switching transitions between two adjacent levels. The proposed modulation technique is implemented using two sets of n evenly phase-shifted carriers that are alternatively applied depending on the instantaneous value of the reference signal of each phase-leg. Furthermore, it can be implemented in FC multilevel converters with any number of levels while maintaining natural capacitor voltage balance. Experimental results from a four-level FC converter prototype are presented. |
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Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència
-Modulation (Electronics)
-Electric current converters
-Power electronics
-Multilevel converter
-power electronics
-pulse-width modulation
-voltage-balancing method
-inverter
-disposition
-Electricitat--Dispositius de distribució
-Modulació (Electrònica)
-Convertidors de corrent elèctric
-Electrònica de potència |
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Derechos:
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Tipo de documento:
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Artículo - Versión presentada
Artículo |
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