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Exponentially stable lyapunov-function-based controller for a flyback CCM converter

  • Seok Min Wi
  • , Jin S. Lee
  • , Minsung Kim
  • Pohang University of Science and Technology

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

In this paper, we propose a Lyapunov-function-based controller for the flyback converter operating in the continuous conduction mode (CCM). The controller consists of a duty-ratio feedforward control unit and a Lyapunov-function-based feedback control unit. The duty-ratio feedforward signal is used to reduce the burden from the Lyapunov feedback controller. The control system guarantees global exponential stability of the closed-loop system and, hence, offers fast transient response under large-signal perturbations. In constructing the controller, we use the average model of the flyback CCM converter taking the parasitic components into account. Numerical simulations confirmed its superior performance, and experimental tests validated the proposed control approach.

Original languageEnglish
Article number2733459
Pages (from-to)1213-1225
Number of pages13
JournalIEEE Transactions on Industrial Electronics
Volume65
Issue number2
DOIs
StatePublished - 29 Jul 2017

Keywords

  • Dynamic response
  • Lyapunov stability
  • Nonlinear controller
  • Nonlinear systems
  • Parasitic components

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