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Field testing and practical aspects of load reducing pitch control systems for a 5 MW offshore wind turbine

: Shan, M.; Jacobsen, J.; Adelt, S.

Volltext urn:nbn:de:0011-n-3010174 (456 KByte PDF)
MD5 Fingerprint: a8e2b6fb22d237f42340a9d37c7a9321
Erstellt am: 23.2.2016

European Wind Energy Association Corporation -EWEC-:
European Wind Energy Conference and Exhibition, EWEC 2013. Vol.3 : Vienna, Austria, 4 - 7 February 2013
Red Hook, NY: Curran, 2013
ISBN: 978-1-63266-314-6
European Wind Energy Conference and Exhibition (EWEC) <2013, Vienna>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IWES ()
Individual Pitch Control (IPC); tower damping; load reduction; field test

This paper presents the results of a research project, covering the design, implementation and field testing of a load reducing pitch control system on a 5 MW offshore wind turbine prototype [1]. Two controller modules, aiming at fatigue load reduction for rotor blades and tower, have been implemented and tested: Yaw and Tilt moment Compensation using Individual Pitch Active Tower Damping Control Both controller modules have been shown to work reliable in the field. The outcome of the analysis of load changes, however, was not as clear as expected. It was found that considerable reinforcements to the pitch system would be required to allow continuous activation of the load reducing controller modules. Furthermore, for the specific wind turbine, it turned out that continuous operation of Individual Pitch Control will not provide many benefits in terms of material or cost savings. Instead, a selective activation in the case of certain extreme operating conditions will b e applied in the next generation of Areva Wind Turbines.