Analysis of Robust Feedback Linearisation Control for Wind Turbines based on Permanent Magnet Synchronous Generator

The objective of this paper is to assess parameter robustness of a controller design based on feedback linearisation applied to a wind turbine with a permanent magnet synchronous generator (PMSG). To study robust local stability, we employ an analysis of the eigenvalues of the small signal model. Some controller parameters are deduced based on measured system variables. It is therefore of interest to know bounds on measurement errors that are guaranteed to preserve local stability. Finally, simulations of a 2MW direct drive PMSG wind turbine system illustrate the effectiveness of the method.