Research Article
An Improved Phase-Locked-Loop Control with Alternative Damping Factors for VSC Connected to Weak AC System
Table 3
The detailed information of predominant poles.
| | | Damping ratio | Oscillation frequency (Hz) |
| | 1.30 pu | | 0.379 | 3.83 | | 1.33 pu | | 0.224 | 3.68 | | 1.37 pu | | 0.126 | 3.50 | | 1.40 pu
| 0.22 ± j21.90 | — | 3.48 | | 1.43 pu | | — | 3.46 |
|
|
