Iterative learning controller with multiple phase-lead compensation for dual-mode flyback inverter

Hyosin Kim, Jin S. Lee, Jih Sheng Lai, Minsung Kim

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

This paper proposes an iterative learning control (ILC) scheme for a dual-mode flyback inverter operating in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM). In dealing with more than 200-W power applications, the dual-mode flyback inverter takes advantage of both DCM and CCM operations. However, it is difficult to control the output current because the system gain is quite low in DCM and the system transfer function has a right-half plane zero in CCM. To overcome the problems occurring in DCM and CCM operations, we propose an ILC scheme with multiple phase-lead compensation. The ILC is proposed to achieve accurate reference tracking and to reject periodic disturbances. The multiple phase-lead compensation technique is then employed to compensate for the effect of different system dynamics. As a theoretical result, we derive the asymptotic stability of the closed-loop system. We also performed the numerical simulations and experimental tests to validate the proposed control approach.

Original languageEnglish
Pages (from-to)6468-6480
Number of pages13
JournalIEEE Transactions on Power Electronics
Volume32
Issue number8
DOIs
StatePublished - Aug 2017

Keywords

  • Continuous conduction mode (CCM)
  • discontinuous conduction mode (DCM)
  • nominal duty
  • single-stage inverter
  • switching linear systems

Fingerprint

Dive into the research topics of 'Iterative learning controller with multiple phase-lead compensation for dual-mode flyback inverter'. Together they form a unique fingerprint.

Cite this