Wind energy conversion. Volume VI. Nonlinear response of wind turbine rotor
The nonlinear equations of motor for a rigid rotor restrained by three flexible springs representing, respectively, the flapping, lagging, and feathering motions are derived using Lagrange's equations, for arbitrary angular rotations. These are reduced to a consistent set of nonlinear equations using nonlinear terms up to third order. The complete analysis is divided into three parts, A, B, and C. Part A consists of forced response of two-degree flapping-lagging rotor under the excitation of pure gravitational field (i.e., no aerodynamic forces). In Part B, the effect of aerodynamic forces on the dynamic response of two-degree flapping-lagging rotor is investigated. In Part C, the effect of third degree of motion, feathering, is considered.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Aeroelastic and Structures Research Lab.
- OSTI ID:
- 5605836
- Report Number(s):
- COO-4131-T1(Vol.6)
- Country of Publication:
- United States
- Language:
- English
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