Abstract
Phase-Locked-Loop (PLL) plays important role in grid connected power electronics system. a good PLL system can detect the grid phase angle and frequency fast and accurately, and additionally it can extract the positive sequence exactly. in real applications, source signal (voltage or current) usually includes harmonic distortion, unbalanced components. Conventional PLL strategy cannot solve the unbalanced and harmonic distortion problems. Different PLL solutions are proposed in literature in recent years. the general considerations for these different approaches are to design positive sequence estimator to eliminate the negative sequence components and use filters to filter out the higher order harmonic distortions. in this paper, a novel moving average filter based synchronous reference frame PLL with positive sequence estimation feature is presented. the proposed PLL has good performances in filtering harmonic, eliminating unbalanced components. to verify the proposed PLL, a STATCOM system is built in Matlab/Sim PowerSystems. Simulation results of different operation modes are shown in this paper.
Recommended Citation
L. Shi and M. L. Crow, "A Novel Phase-locked-loop and its Application in STATCOM System," North American Power Symposium 2010, NAPS 2010, article no. 5619968, Institute of Electrical and Electronics Engineers, Dec 2010.
The definitive version is available at https://doi.org/10.1109/NAPS.2010.5619968
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Moving average filter (MAF); Phase looked loop (PLL); STATCOM; Synchronous reference frame (SRF)
International Standard Book Number (ISBN)
978-142448046-3
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
17 Dec 2010
