10-MW Direct-Drive PMSG-Based Wind Energy Conversion System Model

Abstract

The rapid growth in offshore wind energy conversion systems (WECSs) ratings brings challenges to the planning of power systems, which is partially based on dynamic models. However, such models are not widely available. Recent industrial advances proposed 10-, 12- and even 15-MW WECSs, some of which are still under development. This work presents a model for a 10 MW direct-drive wind energy conversion system (WECS) that can be used in dynamic studies or system level control design. The WECS structure consists of a three-bladed wind turbine (WT), a permanent magnet synchronous generator (PMSG) and a three-level neutral point clamped converter (NPC), i.e., the model covers from the wind to the dc-link of the power conversion. The modeling of the WECS is performed considering wind shear and tower shadow effects, in order to cover the impacts of non-idealities in high power WTs. The employed control is based on the theoretical maximum power curve of the WT, where each of the operating regions has an adequate control to guarantee, either the extraction of maximum power, or the mechanical limits of the WECS. In this context, the parameters of the WT, PMSG and limits of operation are presented, as well as the validation of a 10-MW WECS and control proposed through simulation via MATLAB/Simulink.