Smart Algorithms to Control a Variable Speed Wind Turbine
DOI:
https://doi.org/10.9781/ijimai.2017.08.001Keywords:
Fuzzy, Neural Network, Particle Swarm Optimization, Adaptive Fuzzy Neural Network Sliding Mode, Sliding Mode Control, Variable Speed Wind Turbine.Abstract
In this paper, a robust adaptive fuzzy neural network sliding mode (AFNNSM) control design is proposed to maximize the captured energy for a variable speed wind turbine and to minimize the efforts of the drive shaft. Fuzzy neural network (FNN) is used to improve the mathematical system model, by the prediction of model unknown function, which is used by the Sliding mode control approach (SMC) and enables a lower switching gain to be used despite the presence of large uncertainties. As a result, the used robust control action did not exhibit any chattering behavior. This FNN is trained on-line using the backpropagation algorithm (BP). The particle swarm optimization (PSO) algorithm is used in this study to optimize the learning rate of BP algorithm in order to improve the network performance in term of the speed of convergence. The stability is shown by the Lyapunov theory and the trajectory tracking errors converge to zero without any oscillatory behavior. Simulations illustrate the effectiveness of the designed method.Downloads
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