A Single-Phase Synchronization Technique for Grid-Connected Energy Storage System under Faulty Grid Conditions

Komal Saleem*, Zunaib Ali, Kamyar Mehran

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The control of a single-phase grid-connected energy storage system (ESS) requires a very fast and accurate estimation of grid voltage frequency and phase angle. A phase-locked loop (PLL) based synchronization algorithm usually extracts this information. The operation and control of the entire system are directly affected by the performance of PLL. In this article, a novel advanced single-phase PLL (ASφPLL) technique with reduced complexity is proposed for the fast and accurate extraction of grid information in an ESS under distorted and abnormal grid conditions, including harmonics, interharmonics, dc offset, and grid faults. The proposed method provides a faster dynamic response, lower frequency overshoot, and accurate estimation under off-nominal grid frequencies with reduced computational complexity in comparison with the existing method. The advanced performance of the proposed ASφPLL is verified through the simulation and experimental results.

Original languageEnglish
Article number9397336
Pages (from-to)12019-12032
Number of pages14
JournalIEEE Transactions on Power Electronics
Volume36
Issue number10
Early online date6 Apr 2021
DOIs
Publication statusPublished - 1 Oct 2021

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