Voltage balancing of split inductor based flying capacitor multilevel converter

Multilevel converters are gaining attraction as the new kind of power electronic converters for medium and high-power applications. They are widely accepted because of their unique features such as staircase waveform quality, lower harmonics, low switching frequency and small common mode voltage. Fl...

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Main Author: Chamathakundil, Sneha Raj
Other Authors: Amer M. Y. M. Ghias
Format: Thesis-Master by Coursework
Language:English
Published: Nanyang Technological University 2023
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Online Access:https://hdl.handle.net/10356/168772
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1687722023-07-04T15:14:20Z Voltage balancing of split inductor based flying capacitor multilevel converter Chamathakundil, Sneha Raj Amer M. Y. M. Ghias School of Electrical and Electronic Engineering amer.ghias@ntu.edu.sg Engineering::Electrical and electronic engineering Multilevel converters are gaining attraction as the new kind of power electronic converters for medium and high-power applications. They are widely accepted because of their unique features such as staircase waveform quality, lower harmonics, low switching frequency and small common mode voltage. Flying capacitor multilevel converter is gaining more attraction compared to Diode clamped multilevel converter because of its easier extension to a higher number of output voltage levels. But with higher levels, comes the shoot through issue caused by the simultaneous switching of complimentary switches, which can be avoided by providing proper dead time between each switch. However, providing dead time causes distortion and reduces voltage and current gain. Introducing a split inductor between upper and lower switches in a converter reduces the dead time and solves the shoot through issue. The voltage balancing across flying capacitors is another important factor to be considered. In this work, an active voltage balancing scheme is applied on a three phase four level split inductor flying capacitor converter and it is tested under different loading conditions. And the various modes of operation of the Split Inductor Flying Capacitor converter is also analyzed. Master of Science (Power Engineering) 2023-06-19T06:11:22Z 2023-06-19T06:11:22Z 2023 Thesis-Master by Coursework Chamathakundil, S. R. (2023). Voltage balancing of split inductor based flying capacitor multilevel converter. Master's thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/168772 https://hdl.handle.net/10356/168772 en application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
spellingShingle Engineering::Electrical and electronic engineering
Chamathakundil, Sneha Raj
Voltage balancing of split inductor based flying capacitor multilevel converter
description Multilevel converters are gaining attraction as the new kind of power electronic converters for medium and high-power applications. They are widely accepted because of their unique features such as staircase waveform quality, lower harmonics, low switching frequency and small common mode voltage. Flying capacitor multilevel converter is gaining more attraction compared to Diode clamped multilevel converter because of its easier extension to a higher number of output voltage levels. But with higher levels, comes the shoot through issue caused by the simultaneous switching of complimentary switches, which can be avoided by providing proper dead time between each switch. However, providing dead time causes distortion and reduces voltage and current gain. Introducing a split inductor between upper and lower switches in a converter reduces the dead time and solves the shoot through issue. The voltage balancing across flying capacitors is another important factor to be considered. In this work, an active voltage balancing scheme is applied on a three phase four level split inductor flying capacitor converter and it is tested under different loading conditions. And the various modes of operation of the Split Inductor Flying Capacitor converter is also analyzed.
author2 Amer M. Y. M. Ghias
author_facet Amer M. Y. M. Ghias
Chamathakundil, Sneha Raj
format Thesis-Master by Coursework
author Chamathakundil, Sneha Raj
author_sort Chamathakundil, Sneha Raj
title Voltage balancing of split inductor based flying capacitor multilevel converter
title_short Voltage balancing of split inductor based flying capacitor multilevel converter
title_full Voltage balancing of split inductor based flying capacitor multilevel converter
title_fullStr Voltage balancing of split inductor based flying capacitor multilevel converter
title_full_unstemmed Voltage balancing of split inductor based flying capacitor multilevel converter
title_sort voltage balancing of split inductor based flying capacitor multilevel converter
publisher Nanyang Technological University
publishDate 2023
url https://hdl.handle.net/10356/168772
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