Background of Wind Turbine Blade-Pitch Load Reduction Control

The aim of this chapter is to provide some background regarding to the wind turbine operations, modelling and control. Firstly, this chapter introduces the basic operation of a typical modern wind turbine in Sects. 2.2 and 2.3 and followed by the modelling aspect of a wind turbine including aerodynamics, rotor, blades and tower in Sect. 2.4. Section 2.5 presents background of the model predictive control. Subsequently, the fatigue load assessment methods are discussed in Sect. 2.6. Section 2.7 presents the details of the simulation package FAST (Jonkman and Buhl in FAST User’s Guide, 2005) and simulation turbine NREL 5 MW (Jonkman et al. in Definition of a 5-MW reference wind turbine for offshore system development, 2009). Finally, the design of the baseline CPC and IPC controller is discussed in Sect. 2.8 and followed by a summary in Sect. 2.9.

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