Abstract
With the increase in size of wind turbines, there is increasing interest in exploiting the pitch control capability of variable speed turbines to alleviate tower fatigue loads. The most direct method is to modify the blade pitch angle in response to a measurement of tower acceleration. It is shown that the ap mode has a
central role in determining whether this approach is effective since there is a strong interaction between the blade ap-wise mode and the tower fore-aft mode. Several different approaches to the design of the controller for the tower speed feedback loop are investigated. It is concluded that a reduction in the tower loads of up to
18% is possible for multi-megawatt sized wind turbines.
central role in determining whether this approach is effective since there is a strong interaction between the blade ap-wise mode and the tower fore-aft mode. Several different approaches to the design of the controller for the tower speed feedback loop are investigated. It is concluded that a reduction in the tower loads of up to
18% is possible for multi-megawatt sized wind turbines.
| Original language | English |
|---|---|
| Publication status | Published - 2004 |
| Event | European Wind Energy Conference 2004 - London, United Kingdom Duration: 22 Nov 2004 → … |
Conference
| Conference | European Wind Energy Conference 2004 |
|---|---|
| Country/Territory | United Kingdom |
| City | London |
| Period | 22/11/04 → … |
Keywords
- wind turbines
- tower fore-aft mode
- pitch control
- flap loads
- wind energy