A very fast control based on hysteresis of the Cout current with a frequency loop to operate at constant frequency

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). A very fast control based on hysteresis of the Cout current with a frequency loop to operate at constant frequency . In: "24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009", 15/02/2009 - 19/02/2009, Washington, Estados Unidos. ISBN 978-1-4244-2811-3. https://doi.org/10.1109/APEC.2009.4802753.

Description

Title: A very fast control based on hysteresis of the Cout current with a frequency loop to operate at constant frequency
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: 24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009
Event Dates: 15/02/2009 - 19/02/2009
Event Location: Washington, Estados Unidos
Title of Book: Proceedings of the 24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009
Date: 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

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Abstract

The combination of non-linear control and linear control proposed in [1] provides very fast transient response (voltage step from 1 V to 1.5 V in 2 μs). This non-linear control is based on hysteretic control of the Cout current. This system is very sensitive to effects like aging, temperature, input and output voltage variation, etc., that modify the switching frequency. This paper proposes a frequency loop to avoid the frequency variation and to adjust the switching frequency to the nominal value by changing the hysteretic band. The design and analysis of the nonlinear loop, the voltage loop and frequency loop are presented in detail with a design example. A 5 MHz buck converter is developed and experimental results validate the loops design, obtaining the same fast transient response (from 1.5 V to 2.5 V in 2 μs) but keeping constant the switching frequency in steady state.

More information

Item ID: 5517
DC Identifier: http://oa.upm.es/5517/
OAI Identifier: oai:oa.upm.es:5517
DOI: 10.1109/APEC.2009.4802753
Official URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=04802753
Deposited by: Memoria Investigacion
Deposited on: 20 Dec 2010 09:56
Last Modified: 20 Apr 2016 14:17
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