1 Introduction
2 Development of detailed wind turbine simulation models
3 Requirements for the design of the gearing
4 Design of the gearbox
5 Assembly of the simulation model
5.1 Modelling of flexible components
5.2 Consideration of flexible gearings
6 Analysis in the frequency and time domain
V9 | V8 | V7 | V6 | V5 | V4 | V3 | V2 | V1 | ||
---|---|---|---|---|---|---|---|---|---|---|
– | Flexible modelled gearing | X | – | – | – | – | – | – | – | – |
Flexible modelled carrier | X | X | – | – | – | – | – | – | – | |
Flexible modelled shafts | X | X | X | – | – | – | – | – | – | |
Degrees of freedom | Gearbox with 6 DOF | X | X | X | X | – | – | – | – | – |
Tilting axis | X | X | X | X | X | – | – | – | – | |
Radial displacement | X | X | X | X | X | X | – | – | – | |
Axial displacement | X | X | X | X | X | X | X | – | – | |
Axis of rotation | X | X | X | X | X | X | X | X | X | |
WT | Flexible rotor blades | X | X | X | X | X | X | X | X | – |
Mode shapes | 1st torsional frequency | 0.75 | 0.76 | 0.84 | 0.97 | 0.98 | 0.98 | 0.99 | 0.99 | 3.49 |
2nd torsional frequency | 1.50 | 1.51 | 1.61 | 1.83 | 2.16 | 2.17 | 2.19 | 2.19 | 15.29 | |
3rd torsional frequency | 3.68 | 3.68 | 3.84 | 4.40 | 6.55 | 6.62 | 7.05 | 7.08 | 47.76 | |
4th torsional frequency | 36.90 | 36.90 | 37.00 | 37.00 | 42.75 | 43.11 | 48.17 | 47.88 | 96.90 |