Projects per year
Abstract
Transient instability is an issue for grid-following converters operating under grid faults when complying with low-voltage ride-through requirements. This has initiated much research with the aim to understand, model, and prevent loss of synchronization for synchronous-reference frame phase-locked loop (SRF-PLL)-synchronized systems. However, as the majority of grid faults are asymmetrical, a more complex synchronization unit is needed for the extraction of voltage sequences and phase tracking. This paper proposes a method for enhanced transient stability during severe grid faults for more complex synchronization structures designed to deal with asymmetrical fault conditions. This is done by freezing the frequency of a stationary-reference frame frequency-locked loop. The global asymptotic stability of the method is mathematically proven, and its performance is experimentally verified. Based on the mathematical equivalence between frequency-locked loops and phase-locked loops, it is shown that the presented method can be generalized to both stationary-reference and synchronous-reference frame structures and can, therefore, be a suitable solution in a wide range of applications.
Original language | Danish |
---|---|
Title of host publication | 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL) |
Number of pages | 7 |
Publisher | IEEE |
Publication date | 2020 |
Pages | 1-7 |
ISBN (Print) | 978-1-7281-7161-6 |
ISBN (Electronic) | 978-1-7281-7160-9 |
DOIs | |
Publication status | Published - 2020 |
Event | 21th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 - Aalborg, Denmark Duration: 9 Nov 2020 → 12 Nov 2020 |
Conference
Conference | 21th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 |
---|---|
Country/Territory | Denmark |
City | Aalborg |
Period | 09/11/2020 → 12/11/2020 |
Series | IEEE Workshop on Control and Modeling for Power Electronics (COMPEL) |
---|---|
ISSN | 1093-5142 |
Projects
- 2 Finished
-
Synchronization Stability of Grid-Connected Converters under Grid Faults
Taul, M. G., Blaabjerg, F., Wang, X. & Davari, P.
01/09/2017 → 11/08/2020
Project: PhD Project
-
REPEPS: REliable Power Electronic based Power System
Blaabjerg, F., Iannuzzo, F., Davari, P., Wang, H., Wang, X. & Yang, Y.
01/08/2017 → 01/12/2023
Project: Research
Research output
- 1 Citations
- 1 PhD thesis
-
Synchronization Stability of Grid-Connected Converters under Grid Faults
Taul, M. G., 2020, Aalborg Universitetsforlag. 101 p.Research output: PhD thesis
Open AccessFile