Control Method of DFIG Grid-side Converter under Asymmetric Grid Voltage Drop
DFIG is connected with the grid by Back-to-Back converter. The DC-side voltage will fluctuate widely under the asymmetric fault of grid voltage. Therefore, controlling the grid-side current is the key method to eliminate the influence. Aiming to the perf-ormance of DFIG under the asymmetric fault of...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Control and Information Technology
2011-01-01
|
| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2095-3631.2011.01.005 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | DFIG is connected with the grid by Back-to-Back converter. The DC-side voltage will fluctuate widely under the asymmetric fault of grid voltage. Therefore, controlling the grid-side current is the key method to eliminate the influence. Aiming to the perf-ormance of DFIG under the asymmetric fault of grid voltage, a control method of grid-side converter is proposed for realizing low-voltage ride -through of wind turbines. The state is also analyzed, and then the control instruction is obtained. Furthermore, the simulation model by Matlab/Simulink is established, and the simulated results are given when A-phase voltage is dropping by 50%, which verifies the feasibility of the control strategy. |
|---|---|
| ISSN: | 2096-5427 |