TY - GEN
T1 - Improved Low Voltage Ride-Through Performance of Single-phase Power Converters using Hybrid Grid Synchronization
AU - Sahoo, Animesh K.
AU - Ravishankar, Jayashri
AU - Ciobotaru, Mihai
AU - Padmanaban, Sanjeevikumar
N1 - DBLP's bibliographic metadata records provided through http://dblp.org/search/publ/api are distributed under a Creative Commons CC0 1.0 Universal Public Domain Dedication. Although the bibliographic metadata records are provided consistent with CC0 1.0 Dedication, the content described by the metadata records is not. Content may be subject to copyright, rights of privacy, rights of publicity and other restrictions.
PY - 2020
Y1 - 2020
N2 - Loss of synchronization (LOS) in case of synchronous reference frame based phase-locked loop (SRFPLL) affects the low voltage ride-through performance of grid-connected power converters. To avoid this issue, this paper proposes a hybrid grid synchronization technique that includes two frequency and two phase-angle estimators. It uses the frequency and phase-angle estimation by the SRFPLL during normal grid operation and switches to the arc tangent based phase-angle and corresponding frequency estimation in the αβ-frame during grid faults. To avoid sudden mode transfer between these estimators a common transition algorithm is proposed as well, which is controlled by the phase-angle difference between them. The proposed hybrid grid synchronization transition is implemented in the frequency dependent proportional and resonant current controller of the converter. The controller is run with the low voltage ride-through strategy during the faults. It is observed that the converter having the proposed grid synchronization technique provides robust current controller performance as the fast tracking of grid current on the fault inception and recovery.
AB - Loss of synchronization (LOS) in case of synchronous reference frame based phase-locked loop (SRFPLL) affects the low voltage ride-through performance of grid-connected power converters. To avoid this issue, this paper proposes a hybrid grid synchronization technique that includes two frequency and two phase-angle estimators. It uses the frequency and phase-angle estimation by the SRFPLL during normal grid operation and switches to the arc tangent based phase-angle and corresponding frequency estimation in the αβ-frame during grid faults. To avoid sudden mode transfer between these estimators a common transition algorithm is proposed as well, which is controlled by the phase-angle difference between them. The proposed hybrid grid synchronization transition is implemented in the frequency dependent proportional and resonant current controller of the converter. The controller is run with the low voltage ride-through strategy during the faults. It is observed that the converter having the proposed grid synchronization technique provides robust current controller performance as the fast tracking of grid current on the fault inception and recovery.
U2 - 10.1109/IECON43393.2020.9254513
DO - 10.1109/IECON43393.2020.9254513
M3 - Konferenceartikel i tidsskrift
SN - 1553-572X
SP - 3685
EP - 3690
JO - Proceedings of the Annual Conference of the IEEE Industrial Electronics Society
JF - Proceedings of the Annual Conference of the IEEE Industrial Electronics Society
T2 - IECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society
Y2 - 18 October 2020 through 21 October 2020
ER -