Abstract
The conventional Direct Torque Control (DTC) strategy using PI regulators has certain disadvantages such as significant flux, torque ripples and sensitivity to parametric variations. To overcome these drawbacks, we apply a new type with more robust regulators such as the Second Order Sliding Mode Control (SOSMC) based on Super Twisting algorithm and fuzzy second order sliding mode control. This work deals with the modeling and performance improvement study of the DTC of a Double Star Permanent Magnet Synchronous Machine (DSPMSM) using a hybrid FUZZY-SOSMC speed regulator. The torque ripple, speed and currents will be evaluated and compared by the classical PI-DTC and SOSMC-DTC. Simulation results demonstrate the feasibility and validity of the proposed FUZZY-SOSMC-DTC system by effectively accelerating system response, reducing torque and a very satisfactory performance has been achieved.
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