Journal of Control and Instrumentation Engineering
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Published By MAT Journals (A Unit Of ARV Infomedia Pvt. Ltd.)

2582-3000

Author(s):  
Essam H. Abdou ◽  
Mohamed M. Mohamed M. Aly ◽  
Mohamed M. Mohamed M. Aly ◽  
Mohamed M. Mohamed M. Aly

This paper proposes a new adaptive perturb and observe (AD-PO) algorithm for maximum power point tracking (MPPT) of DFIG based Wind Energy Conversion Systems (WECSs).The proposed algorithm is able to solve the limitations of conventional fixed step-size perturb and observe (PO) algorithm. It is able to achieve the optimum power with small time and oscillations compared with the conventional P&O techniques. This algorithm is mainly based on dividing the power-speed curve into four sectors by comparing the power-speed curve and a special synthesize curve. Hence, the selection of appropriate dynamic perturbation step-size (DPSS) of rotor speed is changed related to the operating sector. For the two sectors far from the maximum power point (MPP), a large DPSS is applied. Otherwise, the controller utilizes a small DPSS. Theproposed algorithm is validated using a large-scale 1.5 MW double-fed induction generator (DFIG); where the stator terminals of DFIG are connected directly to the grid and the rotor terminals of DFIG are connected to the electric gridvia a back-to-back converter (BTBC). The proposed algorithm has been implemented using MATLAB/SIMULINK. The results prove the efficient operation of the proposed algorithm in term of the fast system response compared with traditional P&O techniques.


2021 ◽  
Vol 7 (1) ◽  
pp. 25-41
Author(s):  
Addis G. Zegeye ◽  
Addise B. Mengiste ◽  
Kinde A. Fante ◽  
Amruth R. Thelkar

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