scholarly journals Combined RBFN based MPPT and d-axis stator current control for permanent magnet synchronous generators

Author(s):  
Tuan Ngoc Anh Nguyen ◽  
Duy Cong Pham ◽  
Luu Hoang Minh ◽  
Nguyen Huu Chan Thanh

This paper proposes a new radial basis function neural network maximum power point tracking controller based on a differential evolution algorithm for machine side converter of permanent magnet synchronous generator wind turbine under variable wind speed. Direct axis stator current control methods of permanent magnet synchronous machine are reviewed shortly. A combined radial basis function neural network-based network maximum power point tracking method and d axis stator current control techniques including zero d axis stator current, unity power factor, and constant stator flux-linkage have been implemented to control the machine side converter of permanent magnet synchronous generator wind turbine. The dynamic performance of the proposed approach is assessed under different operating conditions through a simulation model based on MATLAB. It has been seen that the radial basis function neural network controller can not only track well the maximum power point but also can be reduced costly.

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2827 ◽  
Author(s):  
Bouarroudj ◽  
Boukhetala ◽  
Feliu-Batlle ◽  
Boudjema ◽  
Benlahbib ◽  
...  

In this article, a novel maximum power point tracking (MPPT) controller for a photovoltaic (PV) system is presented. The proposed MPPT controller was designed in order to extract the maximum of power from the PV-module and reduce the oscillations once the maximum power point (MPP) had been achieved. To reach this goal, a combination of fuzzy logic and an adaptive radial basis function neural network (RBF-NN) was used to drive a DC-DC Boost converter which was used to link the PV-module and a resistive load. First, a fuzzy logic system, whose single input was based on the incremental conductance (INC) method, was used for a variable voltage step size searching while reducing the oscillations around the MPP. Second, an RBF-NN controller was developed to keep the PV-module voltage at the optimal voltage generated from the first stage. To ensure a real MPPT in all cases (change of weather conditions and load variation) an adaptive law based on backpropagation algorithm with the gradient descent method was used to tune the weights of RBF-NN in order to minimize a mean-squared-error (MSE) criterion. Finally, through the simulation results, our proposed MPPT method outperforms the classical P and O and INC-adaptive RBF-NN in terms of efficiency.


AIP Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 056634 ◽  
Author(s):  
Qian Chen ◽  
Guohai Liu ◽  
Dezhi Xu ◽  
Liang Xu ◽  
Gaohong Xu ◽  
...  

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