Dynamic Modelling of Wind Turbine Drive Trains and Wind/Diesel Systems

摘要

As part of ongoing projects on wind/diesel systems and wind turbine design bases at Risoe, work is in progress concerning dynamic modelling of wind turbine power trains and entire wind/diesel systems. Emphasis is on the interaction between the components of the system and on fluctuating loads due to air turbulence and grid load variations. When using standard FEM techniques in the dynamic modelling of such systems, problems arise due to non-standard features such as rigid-body modes, non-proportional damping and semi-definite mass matrices. Here an approach is proposed, where suitable transformations of the degrees-of-freedom make standard solution techniques applicable. The dynamic modelling aims primarily at spectral solutions although simulation of transients due to cut-in/cut-out of wind turbine and start/stop of the diesel engine is also included. (ERA citation 12:003703)