Wind Velocity Sensorless Maximum Power Point Tracking Algorithm in Grid-connected Wind Energy Conversion System |
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Authors: | Rajin M Linus Perumal Damodharan |
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Affiliation: | 1. Department of EEE, MEA Engineering College, Shihab Thangal Nagar, Malappuram District, Kerala, India;2. Electronics Design and Manufacturing, Indian Institute of Information Technology Design &3. Manufacturing (IIITD&4. M), Kancheepuram, Chennai, India |
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Abstract: | This article proposes a wind velocity sensorless hill-climb searching algorithm in the grid-connected field-oriented controlled permanent magnet synchronous generator based wind energy conversion system. The proposed method improves the speed and accuracy of initial tracking. Pseudo-optimum points are used to track the exact optimum points using the power versus speed characteristics of a wind turbine for various wind velocities. This research emphasizes that the pseudo-optimum points using the power versus speed characteristics are always less than and much nearer to the exact optimum points. The small-step forward tracking after pseudo-optimum points improves the accuracy of this algorithm. Moreover, this method improves the tracking speed for various wind velocities. The system used for this research consists of a back-to-back sinusoidal pulse-width modulation converter between the generator and the grid. The performance of the proposed method is analyzed mathematically and verified by simulation using MATLAB/Simulink software (The Mathworks, Natick; Massachusetts, USA). |
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Keywords: | maximum power point tracking wind energy conversion system hill-climb searching algorithm sensorless control permanent magnet synchronous generator Field-Oriented Control vector control grid synchronization perturb and observe variable-speed wind generation |
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