A Single-Phase Hybrid Six-Leg AC–DC–AC Multilevel Converter

Autor:	Nady Rocha, Cursino Brandao Jacobina, Andre Elias Lucena da Costa
Rok vydání:	2021
Předmět:	Computer science Topology (electrical circuits) Power factor Industrial and Manufacturing Engineering law.invention System model Capacitor Control and Systems Engineering Control theory Modulation law Redundancy (engineering) Waveform Electrical and Electronic Engineering Voltage
Zdroj:	IEEE Transactions on Industry Applications. 57:3888-3897
ISSN:	1939-9367 0093-9994
DOI:	10.1109/tia.2021.3079219
Popis:	This article presents a single-phase hybrid six-leg ac–dc–ac multilevel converter. The configuration is composed of a three-leg neutral point clamped converter connected in series with a three-leg two-level converter. The proposed converter provides a sinusoidal input current with unitary input power factor and it feeds the load with a stable ac voltage. The system model, operation principles, and a control strategy are presented and discussed. Additionally, a space-vector puslewidth modulation technique is developed to control the dc-link capacitors, to produce optimal voltage waveforms, and to reduce the switching losses. The converter can generate 9-level and 11-level output voltages when operating with symmetrical and asymmetrical dc-link voltages. Experimental and simulation results are presented to validate the theoretical studies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b4462ccebe91bb68953d803a54fb5221 https://doi.org/10.1109/tia.2021.3079219 Zobrazit plný text záznamu