Intelligent approach to maximum power point tracking control strategy for variable-speed wind turbine generation system |
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Authors: | Whei-Min Lin Chih-Ming Hong |
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Affiliation: | Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, ROC |
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Abstract: | To achieve maximum power point tracking (MPPT) for wind power generation systems, the rotational speed of wind turbines should be adjusted in real time according to wind speed. In this paper, a Wilcoxon radial basis function network (WRBFN) with hill-climb searching (HCS) MPPT strategy is proposed for a permanent magnet synchronous generator (PMSG) with a variable-speed wind turbine. A high-performance online training WRBFN using a back-propagation learning algorithm with modified particle swarm optimization (MPSO) regulating controller is designed for a PMSG. The MPSO is adopted in this study to adapt to the learning rates in the back-propagation process of the WRBFN to improve the learning capability. The MPPT strategy locates the system operation points along the maximum power curves based on the dc-link voltage of the inverter, thus avoiding the generator speed detection. |
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Keywords: | Wilcoxon radial basis function network Modified particle swarm optimization Permanent magnet synchronous generator Maximum power point tracking Hill-climb searching |
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