{'fraction_non_alphanumeric': 0.02014218009478673, 'fraction_numerical': 0.0, 'mean_word_length': 5.213235294117647, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Maximum Power Point Tracking for direct drive Wind Turbines: An Active Disturbance Rejection Control approach

In this article, an Active Disturbance Rejection Control (ADRC) is proposed for the Maximum Power Point Tracking (MPPT) task on a Direct Drive (DD) wind turbine. The used model takes into account the flexibility of the shaft coupling the blades’ rotor with the permanent magnet synchronous generator (PMSG). The proposed linear control scheme offers a high degree of robustness and good tracking performance, despite the presence of significant disturbances and the fact that a large part of the dynamics is ignored and treated as an unknown disturbance. The ADRC method also avoids measuring the entire set of phase variables of the system. Realistic digital computer simulations are provided that test the validity of the approach.