Design methodology of a non-invasive sensor to measure the current of the output capacitor for a very fast non-linear control

Huerta Oliveres, Santa Concepción and Alou Cervera, Pedro and Oliver Ramírez, Jesús Angel and García Suárez, Oscar and Cobos Márquez, José Antonio and Abou-Alfotouh, A. (2009). Design methodology of a non-invasive sensor to measure the current of the output capacitor for a very fast non-linear control. In: "Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC 2009", 15/02/2009 - 19/02/2009, Washington, EEUU. ISBN 978-1-4244-2811-3.

Description

Title: Design methodology of a non-invasive sensor to measure the current of the output capacitor for a very fast non-linear control
Author/s:
  • Huerta Oliveres, Santa Concepción
  • Alou Cervera, Pedro
  • Oliver Ramírez, Jesús Angel
  • García Suárez, Oscar
  • Cobos Márquez, José Antonio
  • Abou-Alfotouh, A.
Item Type: Presentation at Congress or Conference (Article)
Event Title: Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC 2009
Event Dates: 15/02/2009 - 19/02/2009
Event Location: Washington, EEUU
Title of Book: Proceedings of Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC 2009
Date: March 2009
ISBN: 978-1-4244-2811-3
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Automática, Ingeniería Electrónica e Informática Industrial [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (680kB) | Preview

Abstract

The combination of non-linear control and linear control proposed in [1] has a very fast transient response (voltage step from 1 V to 1.5 V in 2 mus). In order to achieve this fast transient response the non-linear scheme is based on measuring the current of the output capacitor of a Buck converter. The design of this current sensor is complex due to parasitic effects such as component tolerances (bandwidth and dc gain of the Op-Amp), aging, temperature variation, etc. A design methodology for this current sensor is proposed regarding all these effects. The sensing circuit is designed to mirror the actual capacitor current with a trans-impedance amplifier by matching phase and scaling impedances of the RLC network (C, ESR and ESL of the output capacitor). The proposed methodology has been validated by means of a buck converter switching at 5 MHz. Experimental results validate that the current sensor behaves appropriately under voltage and load steps

More information

Item ID: 5508
DC Identifier: http://oa.upm.es/5508/
OAI Identifier: oai:oa.upm.es:5508
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4802754&tag=1
Deposited by: Memoria Investigacion
Deposited on: 20 Dec 2010 10:47
Last Modified: 20 Apr 2016 14:17
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM