Accurate Analysis of Subharmonic Oscillations of V^2 and V^2Ic Controls Applied to Buck Converter

Cortés González, Jorge and Svikovic, Vladimir and Alou Cervera, Pedro and Oliver Ramírez, Jesús Angel and Cobos Marquez, Jose Antonio and Wisniewski, Rafael (2015). Accurate Analysis of Subharmonic Oscillations of V^2 and V^2Ic Controls Applied to Buck Converter. "IEEE TRANSACTIONS ON POWER ELECTRONICS", v. 30 (n. 2); pp. 1005-1018. ISSN 0885-8993. https://doi.org/10.1109/TPEL.2014.2308015.

Description

Title: Accurate Analysis of Subharmonic Oscillations of V^2 and V^2Ic Controls Applied to Buck Converter
Author/s:
  • Cortés González, Jorge
  • Svikovic, Vladimir
  • Alou Cervera, Pedro
  • Oliver Ramírez, Jesús Angel
  • Cobos Marquez, Jose Antonio
  • Wisniewski, Rafael
Item Type: Article
Título de Revista/Publicación: IEEE TRANSACTIONS ON POWER ELECTRONICS
Date: 17 March 2015
ISSN: 0885-8993
Volume: 30
Subjects:
Freetext Keywords: Control of dc/dc converters, V2, V2Ic, ripple based, robustness
Faculty: E.T.S.I. Industriales (UPM)
Department: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

V2Ic control provides very fast dynamic performance to the Buck converter both under load steps and under voltage reference steps. However, the design of this control is complex since it is prone to subharmonic oscillations and several parameters affect the stability of the system. This paper derives and validates a very accurate modeling and stability analysis of a closed-loop V2Ic control using the Floquet theory. This allows the derivation of sensitivity analysis to design a robust converter. The proposed methodology is validated on a 5-MHz Buck converter. The work is also extended to V2 control using the same methodology, showing high accuracy and robustness. The paper also demonstrates, on the V2 control, that even a low bandwidth-linear controller can affect the stability of a ripple-based control.

More information

Item ID: 40690
DC Identifier: http://oa.upm.es/40690/
OAI Identifier: oai:oa.upm.es:40690
DOI: 10.1109/TPEL.2014.2308015
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6774488&tag=1
Deposited by: Memoria Investigacion
Deposited on: 01 Jun 2016 10:21
Last Modified: 01 Jun 2016 10:29
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