Adaptive RBFNN fuzzy sliding mode control for active power filter

Abstract

This paper proposes an adaptive radial basis function (RBF) neural network (NN) fuzzy control scheme to enhance performance of shunt active power filter (APF). The RBF NN is utilized on the approximation of nonlinear function in APF dynamic model, the weights of the RBF NN are adjusted online according to adaptive law from the Lyapunov stability analysis, to ensure the state hitting the sliding surface and sliding along it. In order to compensate the network approximation error and eliminate the existing chattering, the sliding mode control term is adjusted by adaptive fuzzy systems, which can enhance the robust performance of the system. The simulation results of APF using the proposed method confirm the effectiveness of the proposed controller, demonstrating the outstanding compensation performance and strong robustness.