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; Alou Cervera, Pedro; Oliver Ramírez, Jesús Angel; García Suárez, Oscar; Cobos Márquez, José Antonio y 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. En: "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.

Descripción

Título: Design methodology of a non-invasive sensor to measure the current of the output capacitor for a very fast non-linear control
Autor/es:
  • Huerta Oliveres, Santa Concepción
  • Alou Cervera, Pedro
  • Oliver Ramírez, Jesús Angel
  • García Suárez, Oscar
  • Cobos Márquez, José Antonio
  • Abou-Alfotouh, A.
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC 2009
Fechas del Evento: 15/02/2009 - 19/02/2009
Lugar del Evento: Washington, EEUU
Título del Libro: Proceedings of Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC 2009
Fecha: Marzo 2009
ISBN: 978-1-4244-2811-3
Materias:
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Automática, Ingeniería Electrónica e Informática Industrial [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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

Más información

ID de Registro: 5508
Identificador DC: http://oa.upm.es/5508/
Identificador OAI: oai:oa.upm.es:5508
URL Oficial: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4802754&tag=1
Depositado por: Memoria Investigacion
Depositado el: 20 Dic 2010 10:47
Ultima Modificación: 20 Abr 2016 14:17
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