• Lindroos, Tomi
• Lehtonen, Mikko
• Peltola, Esa
• Heinonen, Jaakko

Abstract

The activities have been broadly divided into twodifferent approaches: modelling of the wind turbine'saerodynamical, mechanical and electrical behaviour and,on the other hand, development, laboratory testing andmodelling of technologies of active structural parts tobe used in the turbines.An adaptive wing profile was designed, manufactured andtested. Novel tools for designing, modelling, andmanufacturing of composites with embedded SMA actuatorswere developed and demonstrated. Patentability evaluationof the developed composite technology is ongoing.Several stiffness control concepts utilizing actuatorproperty of Shape Memory Alloys (SMA) have beendeveloped. A 3-5 fold on/off type stiffness increase hasbeen demonstrated with these devices. One patentapplication on studied concepts has been deposited.Several numerical studies on an offshore wind turbinestructure are made in order to study applicationpotentiality of adaptive components.A multidisciplinary-modelling environment has beendeveloped and is used in power system dynamic studies ofwind farms. Active duration and load control algorithmshave been included and demonstrated in the developedmodels.The research activities of five research groups in threeinstitutes have been combined. The groups haveestablished networks with several researchers withdifferent expertise in Europe and USA. Some results havebeen taken into use in other projects with industrialinvolvement. Many results have much wider applicabilitythan just wind energy.

Topics

• impedance spectroscopy
• composite