access icon openaccess Research on variable pitch control strategy of wind turbine for tower vibration reduction

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 11/10/2017, Accepted 03/11/2017, Published 01/01/2017

With the increase of wind turbine power, the vibration problem of tower has become much prominent. Tower vibration is one of the key problems that must be solved. Aimed at the problem of tower vibration caused by turbulent wind, based on analysing the causes of tower vibration, the optimisation control strategy is proposed by increasing tiny pitch angle in the pitch control system, which is equivalent to increasing the aerodynamic damping of tower to reduce the vibration. Taking the 1.577 MW wind turbine as an example to simulate and verify the control strategy, the results show that the control strategy can effectively reduce the fore-aft vibration and torque of tower with little impact on power.

Inspec keywords: wind turbines; damping; poles and towers; aerodynamics; pitch control (position); turbulence; wind; vibration control

Other keywords: tower vibration reduction; torque reduction; pitch angle; aerodynamic damping; variable pitch control; turbulent wind; fore-aft vibration reduction; optimisation control; wind turbine; power 1.577 MW

Subjects: Power and plant engineering (mechanical engineering); Mechanical variables control; Turbulent flows, convection, and heat transfer; Spatial variables control; Applied fluid mechanics; Vibrations and shock waves (mechanical engineering); Winds and their effects in the lower atmosphere; Compressible flows; shock and detonation phenomena; Fluid mechanics and aerodynamics (mechanical engineering)

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