Backstepping nonlinear control to maximize energy capture in a variable speed wind turbine

Ouadia El Maguiri, Driss Moussaif, El alami Smma, Farchi Abdelmajid, Aziz Akhiate
2019 International Journal of Electrical and Computer Engineering (IJECE)  
<p class="abstract">We are considering the problem of maximum power point tracking MPPT in wind energy conversion system (WECS). The paper proposes a new control strategy to maximize the wind aerodynamic energy captured in variable speed wind turbine with a separately excited DC-Generator and transformed to the battery through a controlled DC-DC converter. The proposed strategy controls the stip speed ratio via the rotor angular speed to an optimum point at wich the power coefficient is
more » ... fficient is maximal. The controller is designed using the backstepping technique. A formal analysis based on lyapunov stability is developed to describe the control system performances. In addition to closed-loop global asymptotic stability, it is proved that the controller actually meets the MPPT requirement. The above results are confirmed by simulations. </p>
doi:10.11591/ijece.v9i6.pp4758-4766 fatcat:wz6a4jchwrcyja4bsd4ieiulsa