Transient Dynamic Analysis
Wind speed can fluctuate widely. and at times suddenly. This induces dynamic loading on the wind turbine driveline. Transient dynamic analysis serves two purposes; to determine correct loading factors used in design and to determine the dynamic behaviour of the whole system. It is very important for the wind turbine design to include system dynamics response as part of the overall analysis.
Romax bearing interface and model export to Multi-Body Software
Generic MBS for dynamic analysis uses force-displacement curves to represent the nonlinearity of rolling bearings. Bearings are one of the most significant non-linear components that affect the dynamic behaviour of the whole system. Romax’s bearing model is an accurate and fully coupled six degrees of freedom model. The coupling between the degrees of freedom is an important characteristic of rolling bearings as it affects the dynamic of system response. The full Romax model can automatically be exported to MBS, saving you time and effort in creating accurate models. The exported model contains full information on connections, gears, bearings, shafts, housing and any flexible components. The exported model can be run directly within MBS.
Capabilities
-
MBS (e.g. SIMPACK) can use the Romax stand-alone bearing module
-
Six degrees of freedom fully coupled bearing model
-
Mounting conditions, pre-load, radial and axial internal clearance can be inputted
-
Bearing selection process from the database is based on external (manufacturer) details
-
Full Romax model export functionality to MBS
Benefits
-
Increase accuracy of analysis results due to non-linear bearing model
-
Increase confidence in the results
-
Improve results due to clearance non-linearity
-
Automatic selection of bearings when exporting from Romax
-
Save time through the use of just one model rather than many
Romax gearbox import to wind turbine system analysis software
Software that models dynamics of a complete wind turbine (such as GH Bladed) uses much more simplified gearbox models. Now, the Romax gearbox model can be directly exported to these packages. This means that a full flexibility matrix of the complete gearbox can be used for the overall wind turbine system dynamics. This will also produce more realistic analysis of gearbox loading, and highlight any issues caused by the interactions between the flexibility or stiffness of the gearbox and the rest of the driveline.
Capabilities
-
Import of Romax gearbox model into wind turbine system analysis software (such as GH Bladed)
-
Full six degrees of freedom dynamics within the gearbox
-
Standard template gearbox models, for initial and first pass studies
Benefits
-
More accurate analysis results due to the inclusion of gearbox dynamics
-
Better gearbox, generator and main bearing loading predictions
-
Single gearbox model used for all analysis
- Increased confidence in design and selection of main components
