DESIGN AND EXPERIMENTAL VALIDATION OF HYDRAULIC YAW SYSTEM FOR MULTI MW WIND TURBINE

Authors

  • Soeren Stubkier Hydratech Industries, Wind Power, Suensonsvej 14, 8600 Silkeborg, Denmark
  • Henrik C. Pedersen Aalborg University, Energy Technology, Pontoppidanstræde 101, 9220 Aalborg, Denmark
  • Torben O. Andersen Aalborg University, Energy Technology, Pontoppidanstræde 101, 9220 Aalborg, Denmark

Keywords:

hydraulic, yaw, model, test rig, verification

Abstract

To comply with the increasing demands for life time and reliability of wind turbines as these grow in size, new measures needs to be taken in the design of wind turbines and components hereof. One critical point is the initial testing of the components and systems before they are implemented in an actual turbine. Full scale hardware testing is both extremely expensive and time consuming, and so the wind turbine industry moves more towards simulations when testing.

In order to meet these demands it is necessary to use valid system models of in order to introduce new technologies to the wind turbine market. A hydraulic yaw system is such a new technology, and so a mathematical model of the full scale system and test rig system is derived and compared to measurements from the system. This is done in order to have a validated model, which wind turbine manufacturers may use for test in their simulation environment. The model and the test rig are tested against different design load cases and the results are compared. The experiments show that the model is valid for comparing the overall dynamics of the hydraulic yaw system. Based on the results it is concluded that the model derived is suitable for testing of the dynamic behavior in wind turbine manufacturer’s full scale aero elastic code.

Downloads

Download data is not yet available.

Author Biographies

Soeren Stubkier, Hydratech Industries, Wind Power, Suensonsvej 14, 8600 Silkeborg, Denmark

Søren Stubkier, M.Sc. Since 2008 a Master of Science in Electro Mechanical System Design from the Institute of Energy Technology at Aalborg University. Since 2010 employed at Hydratech Industries as R&D Engineer and industrial researcher (Ph.D fellow) in close corporation with Aalborg University. His research focuses on soft hydraulic yaw system solutions for multi-MW wind turbines and hydraulic subsystems for wind turbines in general.

Henrik C. Pedersen, Aalborg University, Energy Technology, Pontoppidanstræde 101, 9220 Aalborg, Denmark

Henrik C. Pedersen, PhD, M.Sc. Since 2009 Associate Professor at Department of Energy Technology at Aalborg University in Denmark. Prior to that Assistant professor and PhD-student also at Aalborg University. Author of more than 50 papers. Research areas include analysis, design, optimization and control of mechatronic systems and components, with special focus on fluid power for wind and wave energy applications.

Torben O. Andersen, Aalborg University, Energy Technology, Pontoppidanstræde 101, 9220 Aalborg, Denmark

Torben O. Andersen, PhD, M.Sc. Since 2005 Professor in Fluid Power and Mechatronic Systems at Institute of Energy Technology, Aalborg University, DK. Prior to that Associate professor at AAU and R&D engineer at Danfoss. Research areas include control theory, energy usage and optimization of mechatronic components and systems, mechatronic system design in general, design and control of robotic systems, modeling and simulation of dynamical systems.

References

Jonkman, J., Butterfield S. and Scott, G., 2009. Definition

of a 5-MW Reference Wind Turbine for Offshore

System Development, NREL

McCloy, D. and Martin, H. 1980. Control of Fluid

Power: Analysis and design, 2nd edition. Ellis Horwood

Limited

Otis, D. R. and Pourmovahed, A. 1985. An Algorithm

for Computing Non flow Gas Processes in Gas

Springs and Hydro pneumatic Accumulators, Journal

of Dynamic Systems, Measurement, and Control,

, pp. 93 - 95

Pedersen, F. T., Gottschall, J., Kristoffersen, Runge,

J. and Dahlberg, J.-Å. 2011. Yawing and performance

of an offshore wind farm, Proceedings,

EWEA

(a) Stubkier, S. and Pedersen, H. C. 2011. Design,

Optimization and Analysis of Hydraulic Soft Yaw

System for 5 MW Wind TurbineWind Engineering

Vol. 35, pp 529 - 550.

(b) Stubkier, S. and Pedersen, H. C. 2011. State of the

art-hydraulic yaw systems for wind turbines, Proceedings

of the 12th Scandinavian International

Conference on Fluid Power, Tampere University of

Technology, Finland

Stubkier, S. and Pedersen, H. C. 201x.Investigation

of Self -Yaw and its Potential using a Hydraulic

Soft Yaw System for 5 MW Wind Turbine, submitted

to Wind Engineering

Stubkier, S., Pedersen, H. C., Andersen, T. O. and

Markussen, K. 2011. Preliminary findings of soft

yaw concept, Fluid Power and Mechatronics

(FPM), 2011 International Conference on, pp. 456 -

Downloads

Published

2018-12-30

Issue

Section

Original Article

Most read articles by the same author(s)