Bidirectional Isolated Asymmetrical Multilevel Inverter

This brief presents a bidirectional asymmetrical multilevel inverter (MLI) that requires a single dc voltage source and low component count. Considering the weights assigned to the turns ratio involving the primary and multiple secondary windings of the transformer, as well as a proper switching log...

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Veröffentlicht in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2023-01, Vol.70 (1), p.151-155
Hauptverfasser: Passos Nascimento, Anderson Jhones, Ferro de Menezes, Bruno, de Mesquita, Samuel Jo, Rabelo Costa, Kevin, Tofoli, Fernando Lessa, Daher, Sergio, Antunes, Fernando Luiz Marcelo
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container_issue 1
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container_title IEEE transactions on circuits and systems. II, Express briefs
container_volume 70
creator Passos Nascimento, Anderson Jhones
Ferro de Menezes, Bruno
de Mesquita, Samuel Jo
Rabelo Costa, Kevin
Tofoli, Fernando Lessa
Daher, Sergio
Antunes, Fernando Luiz Marcelo
description This brief presents a bidirectional asymmetrical multilevel inverter (MLI) that requires a single dc voltage source and low component count. Considering the weights assigned to the turns ratio involving the primary and multiple secondary windings of the transformer, as well as a proper switching logic, one can obtain an ac output voltage with up to 15 levels. The topology consists of a transformer, an H bridge on the primary side, and asymmetrical cells associated with bidirectional switches on the secondary side. Staircase modulation is employed to reduce the harmonic content of the output voltage, whereas a comprehensive analysis is derived. An experimental prototype rated at 1 kW is designed and implemented in the laboratory to validate the theoretical claims.
doi_str_mv 10.1109/TCSII.2022.3201601
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identifier ISSN: 1549-7747
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1558-3791
language eng
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source IEEE Electronic Library (IEL)
subjects Asymmetrical inverters
Asymmetry
Capacitors
Coils (windings)
Electric potential
Inverters
MOSFET
multilevel inverters
staircase modulation
Switches
Topology
total harmonic distortion
Transformers
Voltage
Windings
title Bidirectional Isolated Asymmetrical Multilevel Inverter
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