Optimization and Implementation of the Proportional-Resonant Controller for Grid-Connected Inverter with Significant Computation Delay

O. Husev, C. Roncero-Clemente, E. Makovenko, S. Pires Pimentel, D. Vinnikov, J. F. Martins

Research output: Contribution to journalArticle

Abstract

The paper describes the tuning process of the proportional-resonant controller taking into account the significant computational delay from the digital control system. Different structures of the controller and related contradicting results are discussed. Particular attention is paid to the stability domain and its dependence on different parameters of the proportional-resonant controller. The main outcome of the paper consists in the tuning approach guidelines for selection of controller parameters in case of significant digital system delay. An optimal controller structure and start-up current optimization are proposed. All results are confirmed by simulation and experimental setup.
Original languageEnglish
Pages (from-to)1-1
JournalIEEE Transactions on Industrial Electronics
DOIs
Publication statusPublished - 15 Feb 2019

Keywords

  • Delays
  • Stability analysis
  • Inverters
  • Power system stability
  • Phase locked loops
  • Field programmable gate arrays
  • dc-ac inverter
  • proportional-resonant controller
  • digital control

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