ECN publication
Individual Pitch Control for Large Scale Wind Turbines: A multivariable control approach
Published by: Publication date:
ECN Wind Energy 10-7-2007
ECN report number: Document type:
ECN-E--07-053 ECN publication
Number of pages: Full text:
43 Download PDF  

In the next decennia, upscaling even towards 10 MW wind turbines may be necessary to lower the costs of offshore wind energy. This requires considerable reductions of turbine loads. Variable speed turbines with active pitch control are most favorable and prevailing nowadays. Currently, the turbine blades are turned collectively to limit the excess of wind power and to regulate the rotor speed above rated wind conditions. To reduce the blade and tower loads, it has been shown that Individual Pitch Control (IPC) is much promising. A multivariable control concept using advanced feedback-feedforward control method is implemented for IPC and is compared with the traditional scalar control concept. The advantage of using such a control concept is also shown.

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