DocumentCode
2871375
Title
Comparative study of linear and nonlinear passivity-based control methods for switched-mode power supplies in audio amplification systems
Author
Oliveira, T.R. ; Donoso-Garcia, P.F. ; Seleme, S.I., Jr. ; Morais, L.M.F.
Author_Institution
IFMG, Autom., Inst. Fed. de Minas Gerais, Betim, Brazil
fYear
2011
fDate
7-10 Nov. 2011
Firstpage
510
Lastpage
515
Abstract
This paper presents the comparison of linear and nonlinear passivity-based controllers used to enhance the performance of power supplies employed in audio amplification systems. Theoretical analysis and experimental results have shown that passivity-based control topologies can reduce the output impedance of the power supply, thus providing low level ripple on the voltage rails and allowing the reduction of the power supply output capacitor.
Keywords
audio-frequency amplifiers; linear systems; nonlinear control systems; switched mode power supplies; audio amplification systems; linear passivity-based control method; low level ripple; nonlinear passivity-based control method; output capacitor; output impedance; switched mode power supplies; voltage rails; Capacitors; Control systems; Harmonic analysis; Impedance; Power supplies; Rails; Voltage control;
fLanguage
English
Publisher
ieee
Conference_Titel
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location
Melbourne, VIC
ISSN
1553-572X
Print_ISBN
978-1-61284-969-0
Type
conf
DOI
10.1109/IECON.2011.6119363
Filename
6119363
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