Internal Dynamics Stabilization of Single-Phase Power Converters with Lyapunov-Based Automatic-Power-Decoupling Control

Huawei Yuan, Sinan Li, Siew-Chong Tan, S.Y.Ron Hui

Research output: Contribution to journalArticle

1 Citation (Scopus)
31 Downloads (Pure)

Abstract

Single-phase power converters with the active pulsating-power-buffering (PPB) function are essentially highly coupled and nonlinear systems. Advanced control techniques are needed for this emerging class of converters to achieve fast transient response and large-signal stability. Existing control solutions are based on either 1) linear control techniques that are operating-point specific or 2) nonlinear control techniques that are generally topology-dependent. The proposed work is an evolved generalized feedback-linearization (FBL) control approach that incorporates the direct Lyapunov control method. The proposed control provides good stabilization of the internal dynamics of the system (which is unviable with FBL control) while still retaining all the best features of FBL control. A kind of single-phase power conversion system with active PPB is described. It is shown that FBL control naturally destabilizes the system and that the proposed control can globally stabilize the system under various operating conditions while yielding fast dynamics.

Original languageEnglish
Article number8732456
Pages (from-to)2160-2169
Number of pages10
JournalIEEE Transactions on Power Electronics
Volume35
Issue number2
Early online date8 Jun 2019
DOIs
Publication statusPublished - 29 Feb 2020

Keywords

  • Lyapunov-based control
  • Single-phase power conversion
  • active power decoupling
  • internal dynamics stabilization

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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