Plug-and-play control module for variable speed wind turbine under unknown aerodynamics

Renewable energy technologies have recently attracted great attentions. Several renewable energies such as wind, solar, etc. are now being investigated to solve the current energy crisis. In this paper, a novel control strategy for variable speed wind turbine to extract the maximum power from wind is proposed without knowing any of the system parameters and the aerodynamics. Lyapunov stability analysis is performed to guarantee the stability of whole system. It is shown that the proposed controller can regulate the tracking error to an arbitrary small value even if neither system parameter nor the aerodynamics is available for control design. It is expected that the proposed control algorithm can be used as an “universal controller ”for similar type of variable speed wind turbine without any modifications. The modularity of the proposed controller can benefit the plug-and-play property which will benefit distributed control of smart grid. Simulation studies are performed to validate the proposed algorithm.