Performance Enhancement of QT1-PLL by using cascaded filtering stage
As one of the state-of-the-art grid voltage synchronization techniques, Quasi-type-1 structure based phase locked loop (QT1-PLL) achieves an excellent detection performance when only odd-order harmonics needs to be eliminated by Moving average filter (MAF). Nonetheless, when it is necessary for MAF...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-04-01
|
| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484721013834 |
| _version_ | 1818272562014060544 |
|---|---|
| author | Xian Wang Dazhi Wang Linxin Yu Ye Li Shuai Zhou |
| author_facet | Xian Wang Dazhi Wang Linxin Yu Ye Li Shuai Zhou |
| author_sort | Xian Wang |
| collection | DOAJ |
| description | As one of the state-of-the-art grid voltage synchronization techniques, Quasi-type-1 structure based phase locked loop (QT1-PLL) achieves an excellent detection performance when only odd-order harmonics needs to be eliminated by Moving average filter (MAF). Nonetheless, when it is necessary for MAF to eliminate the fundamental negative sequence component, more delay will be introduced to the PLL, reducing its stability. The transient response speed of QT1-PLL needs to be reduced to ensure stability, which may be unacceptable for grid-connected power converters. To deal with this situation, this paper proposes a cascaded filtering stage with small delay. The suggested filtering stage is composed of second-order lead compensator, notch filter, first-order lead compensator and MAF, which is integrated in QT1-PLL. Compared with the traditional QT1-PLL, the proposed PLL has faster transient response speed and higher detection accuracy. The simulation and experimental results verify the effectiveness of the suggested filtering stage. |
| first_indexed | 2024-12-12T21:44:02Z |
| format | Article |
| id | doaj.art-0cb287128c504bcfb0cc177985bbd825 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-12-12T21:44:02Z |
| publishDate | 2022-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-0cb287128c504bcfb0cc177985bbd8252022-12-22T00:10:58ZengElsevierEnergy Reports2352-48472022-04-01812711282Performance Enhancement of QT1-PLL by using cascaded filtering stageXian Wang0Dazhi Wang1Linxin Yu2Ye Li3Shuai Zhou4Northeastern University, Shenyang, 110819, China; Northeast Branch of State Grid Corp., Shenyang, 110180, ChinaNortheastern University, Shenyang, 110819, China; Corresponding author.Northeastern University, Shenyang, 110819, ChinaNortheastern University, Shenyang, 110819, ChinaNortheastern University, Shenyang, 110819, ChinaAs one of the state-of-the-art grid voltage synchronization techniques, Quasi-type-1 structure based phase locked loop (QT1-PLL) achieves an excellent detection performance when only odd-order harmonics needs to be eliminated by Moving average filter (MAF). Nonetheless, when it is necessary for MAF to eliminate the fundamental negative sequence component, more delay will be introduced to the PLL, reducing its stability. The transient response speed of QT1-PLL needs to be reduced to ensure stability, which may be unacceptable for grid-connected power converters. To deal with this situation, this paper proposes a cascaded filtering stage with small delay. The suggested filtering stage is composed of second-order lead compensator, notch filter, first-order lead compensator and MAF, which is integrated in QT1-PLL. Compared with the traditional QT1-PLL, the proposed PLL has faster transient response speed and higher detection accuracy. The simulation and experimental results verify the effectiveness of the suggested filtering stage.http://www.sciencedirect.com/science/article/pii/S2352484721013834Phase locked loopSynchronizationMoving average filterLead compensatorNotch filterArctangent function |
| spellingShingle | Xian Wang Dazhi Wang Linxin Yu Ye Li Shuai Zhou Performance Enhancement of QT1-PLL by using cascaded filtering stage Energy Reports Phase locked loop Synchronization Moving average filter Lead compensator Notch filter Arctangent function |
| title | Performance Enhancement of QT1-PLL by using cascaded filtering stage |
| title_full | Performance Enhancement of QT1-PLL by using cascaded filtering stage |
| title_fullStr | Performance Enhancement of QT1-PLL by using cascaded filtering stage |
| title_full_unstemmed | Performance Enhancement of QT1-PLL by using cascaded filtering stage |
| title_short | Performance Enhancement of QT1-PLL by using cascaded filtering stage |
| title_sort | performance enhancement of qt1 pll by using cascaded filtering stage |
| topic | Phase locked loop Synchronization Moving average filter Lead compensator Notch filter Arctangent function |
| url | http://www.sciencedirect.com/science/article/pii/S2352484721013834 |
| work_keys_str_mv | AT xianwang performanceenhancementofqt1pllbyusingcascadedfilteringstage AT dazhiwang performanceenhancementofqt1pllbyusingcascadedfilteringstage AT linxinyu performanceenhancementofqt1pllbyusingcascadedfilteringstage AT yeli performanceenhancementofqt1pllbyusingcascadedfilteringstage AT shuaizhou performanceenhancementofqt1pllbyusingcascadedfilteringstage |