Interconnection and damping assignment passivity-based control of a PMSG based wind turbine for maximum power tracking

The use permanent magnet synchronous generators (PMSG) in wind turbines has been increase considerably in offshore applications due to its efficiency, low maintenance costs and reliability. PMSG´s are connected to the grid by means of frequency converters. Generally a back-to-back full converter structure is preferred. This work presents the application of interconnection and damping assignment passivity-based control (IDA-PBC) in order of a PMSG based wind turbine. This strategy is combined with a mechanical torque estimator in order to track the maximum power point of the system. Simulation results show the operation of the proposed strategy during wind speed variations. Proposed strategy extracts maximum power of wind turbine and injects generated power into the grid.