Release notes
NREL 5-MW Reference Wind Turbine v 3.0
The model is based on the fictive 5-MW reference wind turbine described by NREL (National Renewable Energy Laboratory). Version 2.0.
The controller implemented as a Dynamic Link Library (DLL) that uses “bladed2hawc.dll” as wrapper that reads the "DISCON.DLL". The "DISCON.DLL" contains the variable-speed generator torque and blade-pitch controller as implemented in GH Bladed-style. The controller is also described in:
Jonkman, J, Butterfield, S., Musial, W., and Scott, G., “Definition of a 5-MW Reference Wind Turbine for Offshore System Development,” NREL/TP-500-38060, Golden, CO: National Renewable Energy Laboratory, February 2009.
Version 3 changes:
- Damping of the towertop changed to “damping_posdef”
- Damping of the shaft retuned to 31.45 log decr. damping for free free with stiff rotor and tower
- Damping of the blade changed only stiffness proportional
- Moment transfer from shaft to the towertop is now correctly implemented as an external moment
Bugs and errors can be reported here
This model is compatible with HAWC2 versions from 9.7.