Application of Fuzzy Controller to Minimize Torque and Flux Ripples of PMSM

This paper presents the application of fuzzy logic torque and speed control of a permanent magnet synchronous machine (PMSM) using direct torque control (DTC). In this approach, the classical controllers are replaced by two fuzzy controllers to minimize torque, flux and current ripples. A comparative study between the classical DTC and fuzzy logic DTC shows that flux, torque and stator currents have been minimized without any effective change of the inverter switching frequency.

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