LAPSE:2020.0664
Published Article
LAPSE:2020.0664
An Efficient Hybrid Filter-Based Phase-Locked Loop under Adverse Grid Conditions
Nanmu Hui, Dazhi Wang, Yunlu Li
June 23, 2020
Synchronous-reference-frame phase-locked loop (SRF-PLL) is widely used in grid synchronization applications. However, under unbalanced, distorted and DC offset mixed grid conditions, its performance tends to worsen. In order to improve the filtering capability of SRF-PLL, a modified three-order generalized integrator (MTOGI) with DC offset rejection capability based on conventional three order generalized integrator (TOGI) and an enhanced delayed signal cancellation (EDSC) are proposed, then dual modified TOGI (DMTOGI) filtering stage is designed and incorporated into the SRF-PLL control loop with EDSC to form a new hybrid filter-based PLL. The proposed PLL can reject the fundamental frequency negative sequence (FFNS) component, DC offset component, and the rest of harmonic components in SRF-PLL input three-phase voltages at the same time with a simple complexity. The proposed PLL in this paper has a faster transient response due to the EDSC reducing the number of DSC operators. A small-signal model of the proposed PLL is derived. The stability is analyzed and parameter design guidelines are given. Experimental results are included to validate the effectiveness and robustness of the proposed PLL.
Keywords
DC offset, delayed signal cancellation, harmonic, phase locked loop, three order generalized integrator (TOGI)
Suggested Citation
Hui N, Wang D, Li Y. An Efficient Hybrid Filter-Based Phase-Locked Loop under Adverse Grid Conditions. (2020). LAPSE:2020.0664
Author Affiliations
Hui N: School of Information Science & Engineering, Northeastern University, Shenyang 110819, Liaoning, China
Wang D: School of Information Science & Engineering, Northeastern University, Shenyang 110819, Liaoning, China
Li Y: School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, China
[Login] to see author email addresses.
Journal Name
Energies
Volume
11
Issue
4
Article Number
E703
Year
2018
Publication Date
2018-03-21
Published Version
ISSN
1996-1073
Version Comments
Original Submission
Other Meta
PII: en11040703, Publication Type: Journal Article
Record Map
Published Article

LAPSE:2020.0664
This Record
External Link

doi:10.3390/en11040703
Publisher Version
Download
Files
[Download 1v1.pdf] (9.8 MB)
Jun 23, 2020
Main Article
License
CC BY 4.0
Meta
Record Statistics
Record Views
304
Version History
[v1] (Original Submission)
Jun 23, 2020
 
Verified by curator on
Jun 23, 2020
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2020.0664
 
Original Submitter
Calvin Tsay
Links to Related Works
Directly Related to This Work
Publisher Version