Nonlinear Control of Power Limitation for Doubly-Fed Wind Power Generation System

In the high wind speed region, in order to more effectively fulfill the power limitation control for the DFIG (Doubly-Fed Induction Generator) wind Power generation system, a constant power control strategy, with nonlinear control theory, is proposed via the pitch angle of vane and electromagnetic torque control simultaneously. The simulation results show the correctness and feasibility of the proposed control strategy. Comparing with the constant power control which only considered the pitch angle control, the controller can more effectively hold back the fluctuations of the electromagnetic power caused by the wind speed variations.