Design, analysis and development of new buck-boost and reduced EMI power conversion technology

The newly proposed Z-Source inverter has been proven in the literature to exhibit both steady-state voltage buck and boost capabilities using a unique LC impedance network coupled between the power source and converter circuit. This paper now presents transient modeling and analysis of a voltage-typ...

Full description

Saved in:
Bibliographic Details
Main Author: Loh, Andrew Poh Chiang.
Other Authors: School of Electrical and Electronic Engineering
Format: Research Report
Published: 2008
Subjects:
Online Access:http://hdl.handle.net/10356/2933
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
id sg-ntu-dr.10356-2933
record_format dspace
spelling sg-ntu-dr.10356-29332023-03-04T03:20:10Z Design, analysis and development of new buck-boost and reduced EMI power conversion technology Loh, Andrew Poh Chiang. School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Power electronics The newly proposed Z-Source inverter has been proven in the literature to exhibit both steady-state voltage buck and boost capabilities using a unique LC impedance network coupled between the power source and converter circuit. This paper now presents transient modeling and analysis of a voltage-type /.-source inverter. These aspects are found to be challenging and they need to be carefully investigated before attempting to design advanced control algorithms for controlling the /.-source inverter. Through detailed analysis, the paper identifies several phenomena on the dc and ac-sides of the inverter, which would result in the inverter having an inferior non-minimum-phase transient response. The dc-side phenomenon is associated with the Zrsource impedance network, which is shown through small-signal and signal-flow-graph analyses to be having a right-half-plane zero in its control-to-output transfer function. Also, the ac-side phenomenon is shown through space vector analysis to depend on the time intervals of inverter states used for reconstructing the desired inverter output voltage. Based on the ac vectorial analysis, a method for improving the inverter transient response is also presented. Lastly, simulation results obtained using a switching-functional model and experimental results obtained using a laboratory prototype are presented for validating the described theoretical concepts. 2008-09-17T09:17:36Z 2008-09-17T09:17:36Z 2004 2004 Research Report http://hdl.handle.net/10356/2933 Nanyang Technological University application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
topic DRNTU::Engineering::Electrical and electronic engineering::Power electronics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Power electronics
Loh, Andrew Poh Chiang.
Design, analysis and development of new buck-boost and reduced EMI power conversion technology
description The newly proposed Z-Source inverter has been proven in the literature to exhibit both steady-state voltage buck and boost capabilities using a unique LC impedance network coupled between the power source and converter circuit. This paper now presents transient modeling and analysis of a voltage-type /.-source inverter. These aspects are found to be challenging and they need to be carefully investigated before attempting to design advanced control algorithms for controlling the /.-source inverter. Through detailed analysis, the paper identifies several phenomena on the dc and ac-sides of the inverter, which would result in the inverter having an inferior non-minimum-phase transient response. The dc-side phenomenon is associated with the Zrsource impedance network, which is shown through small-signal and signal-flow-graph analyses to be having a right-half-plane zero in its control-to-output transfer function. Also, the ac-side phenomenon is shown through space vector analysis to depend on the time intervals of inverter states used for reconstructing the desired inverter output voltage. Based on the ac vectorial analysis, a method for improving the inverter transient response is also presented. Lastly, simulation results obtained using a switching-functional model and experimental results obtained using a laboratory prototype are presented for validating the described theoretical concepts.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Loh, Andrew Poh Chiang.
format Research Report
author Loh, Andrew Poh Chiang.
author_sort Loh, Andrew Poh Chiang.
title Design, analysis and development of new buck-boost and reduced EMI power conversion technology
title_short Design, analysis and development of new buck-boost and reduced EMI power conversion technology
title_full Design, analysis and development of new buck-boost and reduced EMI power conversion technology
title_fullStr Design, analysis and development of new buck-boost and reduced EMI power conversion technology
title_full_unstemmed Design, analysis and development of new buck-boost and reduced EMI power conversion technology
title_sort design, analysis and development of new buck-boost and reduced emi power conversion technology
publishDate 2008
url http://hdl.handle.net/10356/2933
_version_ 1759853844883308544