Space-state robust control of a Buck converter with amorphous core coil and variable load

Morales Cabrera, Rafael and Somolinos Sánchez, José Andrés and Morón Fernández, Carlos and García García, Alfonso (2013). Space-state robust control of a Buck converter with amorphous core coil and variable load. "Measurement", v. 40 (n. 10); pp. 3863-3870. ISSN 0263-2241. https://doi.org/10.1016/j.measurement.2013.07.028.

Description

Title: Space-state robust control of a Buck converter with amorphous core coil and variable load
Author/s:
  • Morales Cabrera, Rafael
  • Somolinos Sánchez, José Andrés
  • Morón Fernández, Carlos
  • García García, Alfonso
Item Type: Article
Título de Revista/Publicación: Measurement
Date: December 2013
ISSN: 0263-2241
Volume: 40
Subjects:
Freetext Keywords: Buck converters; Inductance aging; PWM control; State-space control
Faculty: E.T.S.I. Navales (UPM)
Department: Sistemas Oceánicos y Navales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Pulse-width modulation is widely used to control electronic converters. One of the most frequently used topologies for high DC voltage/low DC voltage conversion is the Buck converter. These converters are described by a second order system with an LC filter between the switching subsystem and the load. The use of a coil with an amorphous magnetic material core rather than an air core permits the design of smaller converters. If high switching frequencies are used to obtain high quality voltage output, then the value of the auto inductance L is reduced over time. Robust controllers are thus needed if the accuracy of the converter response must be preserved under auto inductance and payload variations. This paper presents a robust controller for a Buck converter based on a state space feedback control system combined with an additional virtual space variable which minimizes the effects of the inductance and load variations when a switching frequency that is not too high is applied. The system exhibits a null steady-state average error response for the entire range of parameter variations. Simulation results and a comparison with a standard PID controller are also presented.

More information

Item ID: 29151
DC Identifier: http://oa.upm.es/29151/
OAI Identifier: oai:oa.upm.es:29151
DOI: 10.1016/j.measurement.2013.07.028
Official URL: http://www.sciencedirect.com/science/journal/02632241
Deposited by: Memoria Investigacion
Deposited on: 14 Jul 2014 16:20
Last Modified: 11 May 2020 08:01
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