A PLL-Based Controller for Three-Phase Grid-Connected Power Converters

Research output: Contribution to journalJournal articleResearchpeer-review

22 Citations (Scopus)

Abstract

The current control of three-phase grid-connected converters is typically carried out by using a proportional-resonant controller or synchronous reference frame (SRF) proportional-integral regulator. The implementation of these controllers often requires knowledge of the grid voltage frequency/phase angle, which is typically provided by a synchronization unit. It implies that dynamics and possible inaccuracies of the synchronization unit have a considerable impact on the current controller performance. The aim of this letter is to design an adaptive current controller by using a conventional SRF phase-locked loop. In this way, the current controller and synchronization part are merged into a single unit, which results in a simpler and more compact structure. The effectiveness of the proposed controller is verified using experimental results.

Original languageEnglish
Article number7959117
JournalIEEE Transactions on Power Electronics
Volume33
Issue number2
Pages (from-to)911-916
Number of pages6
ISSN0885-8993
DOIs
Publication statusPublished - Feb 2018

Keywords

  • Current control
  • Distributed generation (DG) systems
  • Phase-locked loop (PLL)
  • Power converters
  • Synchronization
  • distributed generation systems
  • power converters
  • synchronization
  • phase-locked loop (PLL)

Fingerprint Dive into the research topics of 'A PLL-Based Controller for Three-Phase Grid-Connected Power Converters'. Together they form a unique fingerprint.

  • Cite this