Research on Control Technology of Pitch for Large Wind Turbine

Abstract

The unavoidable load of the large wind turbine due to the wind shear effect, the tower effect and other unavoidable disturbances cause the unbalanced load of the impeller, and the larger the diameter of the wind turbine, the stronger the imbalance of the force of the whole wind turbine surface, which will cause a large fatigue load to the key components of the unit. This kind of fatigue load cannot be solved by using the unified pitch. This paper presents a method to convert the fatigue load into a pitch system as a control According to the GL2010 specification and Bladed software, a 2MW wind turbine with a large blade of a wind farm is taken as an example, and the whole load is verified by the whole load test. The effectiveness of the control strategy alone provides a practical solution for the batch application of the independent pitch control strategy, and provides technical support for the comprehensive promotion of the large impeller type independent pitch technology.