Abstract
Permanent magnet synchronous motors (PMSM) are extensively used in high-performance industrial applications. The electromagnetic torque in a PMSM is proportional to the angle between the stator and rotor flux linkage, thus, high dynamic response can be achieved by means of direct torque control. The main advantage of DTC is its simple structure since no coordinate transformations or PWM generation is needed. In this paper, an improved scheme to solve the torque and the stator flux linkage ripples of direct torque control (DTC) for a permanent magnet synchronous motor is proposed. Moreover, the fuzzy DTC control strategy based on fuzzy controller using the space vector modulation (SVM) is designed and presented in this paper. Theoretical development and simulation results by the classical and improved DTC are also presented and compared to support the proposed strategy.
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