On improving phase-shifted PWM for flying capacitor multilevel converters
| Autor: | Gabriel J. Capella, Pablo Acuna, Josep Pou, Amer M. Y. M. Ghias, Vassilios G. Agelidis |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. TIEG-P - Terrassa Industrial Electronics Group -Power |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
020209 energy voltage-balancing method Multilevel converter 02 engineering and technology law.invention pulse-width modulation law Power electronics inverter 0202 electrical engineering electronic engineering information engineering Electronic engineering Convertidors de corrent elèctric Electrical and Electronic Engineering Modulation (Electronics) Electricitat--Dispositius de distribució business.industry 020208 electrical & electronic engineering Electrical engineering Converters Electric current converters Capacitor power electronics Modulation disposition Harmonic Enginyeria electrònica::Electrònica de potència [Àrees temàtiques de la UPC] Electrònica de potència business Phase modulation Modulació (Electrònica) Pulse-width modulation Voltage |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| DOI: | 10.1109/TPEL.2016.2521803 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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