  The above paper presents some considerations regarding the modelling of wind
energy conversion systems (WECS). There are presented practical problems of
grid integration of wind turbines, the usage of general system models,
respectively of RMS (root mean squares) models. There are presented models of
some WECS components and related, such as: a probabilistic 2D model for
instantaneous wind velocities, aerodynamic model of wind turbine, rotating
inertia model, asynchronous machine model, grid model. This paper only presents
models used in different WECS, models that can be easily simulated with
adequate simulation tools such as Matlab-Simulink.
