Print Email Facebook Twitter Guidelines for Stability Analysis of the DDSRF-PLL Using LTI and LTP Modelling in the Presence of Imbalance Title Guidelines for Stability Analysis of the DDSRF-PLL Using LTI and LTP Modelling in the Presence of Imbalance Author Beloqui Larumbe, L. (TU Delft DC systems, Energy conversion & Storage) Qin, Z. (TU Delft DC systems, Energy conversion & Storage) Bauer, P. (TU Delft DC systems, Energy conversion & Storage) Date 2022 Abstract In this article, the Linear Time Invariant (LTI) and Linear Time Periodic (LTP) models of two different implementations of the DDSRF-PLL in the presence of voltage imbalance are derived analytically. The accuracy of the models is investigated with time domain simulations, frequency scans, and stability analysis. On top of this, a guideline for properly choosing between LTI and LTP models for stability assessment of the DDSRF-PLL according to the degree of grid voltage imbalance is proposed. Furthermore, it is revealed that, depending on the DDSRF-PLL implementation, the positive-sequence voltage might also cause LTP dynamics, rendering the LTI model inaccurate even when the imbalance is low. Subject DDSRF-PLLLinear Time PeriodicLVRTsmall-signal stabilityunbalanced systemvoltage imbalance To reference this document use: http://resolver.tudelft.nl/uuid:8c50773a-503a-432d-8622-b255e7bca23c DOI https://doi.org/10.1109/OJIES.2022.3178042 ISSN 2644-1284 Source IEEE Open Journal of the Industrial Electronics Society, 3, 339-352 Part of collection Institutional Repository Document type journal article Rights © 2022 L. Beloqui Larumbe, Z. Qin, P. Bauer Files PDF Guidelines_for_Stability_ ... alance.pdf 4.95 MB Close viewer /islandora/object/uuid:8c50773a-503a-432d-8622-b255e7bca23c/datastream/OBJ/view