Hybrid fractional fuzzy PID design for MPPT-pitch control of wind turbine-based bat algorithm
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ORIGINAL PAPER
Hybrid fractional fuzzy PID design for MPPT-pitch control of wind turbine-based bat algorithm Oussama Maroufi1
· Abdelghani Choucha1 · Lakhdar Chaib1
Received: 24 April 2019 / Accepted: 26 April 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The power quality and protection enhancement of wind turbine becomes an important paramount. This requires a competitive controller with high performances. For this purpose, the paper presents a novel hybrid controller named fractional fuzzy PID (FFPID) strategy tunning with an efficient metaheuristic optimization bat algorithm (BA) for controlling the wind turbine equipped with permanent magnet synchronous generator (WT-PMSG). The main control objectives are to drive WT-PMSG for extracting the maximum power point (MPPT) in the low range of weather conditions and further to protect the wind turbine in high-wind region using pitch angle control. The performance of proposed strategy is analysed for all regions low–high wind speed disturbances. The obtained results are obviously proved that the optimal hybrid fractional-order fuzzy PID controller is highly better than the optimal classical PID, fuzzy PID (FPID) and fractional-order PID (FOPID) controllers in terms of response, overshoot and indices performances. Further, the WT-PMSG is effectively controlled at different conditions of wind velocities by the proposed scheme. Keywords Wind turbine · Permanent magnet synchronous generator · Maximum power point tracking · Pitch angle · Fractional fuzzy PID controller
1 Introduction Nowadays, renewable energies have gained a great popularity, owing to the increase in electricity demand; the greenhouse effect caused by conventional energies (petrol— gas–carbon). Moreover, green energy presents a solution for isolated sites [1]. Variable speed wind turbine (VSWT) equipped with a permanent magnet synchronous generator (PMSG) is one of the most promising ones due to its advantages of high power, no gearbox and simplicity of control comparatively with double-feed induction machine. The WT characterized by two principal controls; adjust the wind turbine at the maximum power point (MPPT) in the low-speed region, where this can be achieved using the MPPT control [2]. In other hand, protect the WT and assure the continuity of service when the generator speed is higher
B 1
Oussama Maroufi [email protected] Laboratory of Power Systems Control and Electrical Networks (LACoSERE), University of Amar Thelidji, Laghouat, Algeria
than the rated value by controlling the pitch angle of blades [3, 4]. In this context, many authors have tried to overcome these problems. Conventional PI controller has been widely used [5], but the researchers have noted that the performance of this controller is limited over nonlinearity of WT model and the difficult wind speed profiles. Consequently, several advanced nonlinear and robust strategies are introduced to overcome the deficits of the classical controller. We can cite some of these studies; as outlined in [
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