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dc.contributor.authorRodríguez Vilamitjana, Enric
dc.contributor.authorEl Aroudi, Abdelali
dc.contributor.authorGuinjoan Gispert, Francisco
dc.contributor.authorAlarcón Cot, Eduardo José
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.identifier.citationRodriguez, E. [et al.]. A ripple-based design-oriented approach for predicting fast-scale instability in DC–DC switching power supplies. "IEEE transactions on circuits and systems I: regular papers", Desembre 2011, vol. 58, núm. 1, p. 215-227.
dc.description.abstractThis paper presents a design-oriented analytical approach for predicting fast-scale instability in power electronics converters under voltage-mode control strategy. This approach is based on the use of the ripple amplitude of the feedback control voltage as an index for predicting subharmonic oscillations in these systems. First, the work revisits the stability analysis technique based on the nonlinear discrete-time model, demonstrating that the ripple amplitude can be included within the expression of the Jacobian matrix of this model, hence giving a mathematical support to extend the ripple index to more complex topologies. A simple but representative buck converter under voltage-mode control is used to illustrate the approach. Using the ripple-based index, closed-form expressions of stability boundaries are derived. Unlike other available results obtained from existing methods, the stability boundary, in this work is expressed analytically in terms of both power stage and controller design parameters. Moreover, one can determine how these parameters are involved in the closed form expressions and, furthermore, how each parameter affects the stability of the system. The approach is validated by numerical simulations from the state equations and also experimentally within a wide range of the design parameter space.
dc.format.extent13 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència::Circuits de potència
dc.subject.lcshDC-to-DC converters
dc.subject.lcshElectric current converters -- Mathematical models
dc.titleA ripple-based design-oriented approach for predicting fast-scale instability in DC–DC switching power supplies
dc.subject.lemacConvertidors de corrent elèctric
dc.contributor.groupUniversitat Politècnica de Catalunya. EPIC - Energy Processing and Integrated Circuits
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorRodriguez, E.; El Aroudi, A.; Guinjoan, F.; Alarcón, E.
local.citation.publicationNameIEEE transactions on circuits and systems I: regular papers

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