PMSG Gear-Less Wind Turbine Equipped with an Active and Reactive Power supervisory

In this paper, we present comparative studies related to some control techniques used to control high power permanent Magnet Synchronous Generator (PMSG) Gear-less Wind Turbines. For the two back-to-back converter (generator side and grid side), Field Oriented Control (FOC), Direct Torque Control (DTC), Voltage Oriented Control (VOC) and Direct Power Control (DPC) are investigated and compared according to many criteria (implementation complexity, steady state and transient performances). Control strategies are evaluated by simulation and are applied to a supervision scheme developed for a 2MW Direct Drive wind turbine. The scope is to verify the compliance of this system with E.On Netz german Grid Code including LVRT performances and active and reactive power management.

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