The Robust Control for Inhibition of Load on Offshore Wind Turbines Variable Pitch Control

Abstract

Offshore wind power industry develop rapidly in recent years. Offshore wind has many advantages compared with onshore wind turbine. For example, it do not take up land and can make better use of the sea wind resources. However, the flexible components of wind turbines violent vibration will cause the fatigue damage and increase the cost of the maintenance and reduce the service life. Pitch variable is an effective means of control to prevent the sea wind of the interference. In recent years, robust control has won a bigger development. In the paper a multi-objective pitch control strategy based on robust theory is proposed for large wind turbines. The experimental results shows that the robust ∞ H control has a good effect on the wind turbines variable pitch control.