| Abstract: | This article presents the direct torque control (DTC) strategy for the doubly fed induction motor (DFIM) connectedto two three-level voltage source inverters (3LVSIs) with neutral point clamped (NPC) structure. This control methodallows to reduce the torque and flux ripples as well as to optimize the total harmonic distortion (THD) of motorcurrents. The use of 3LVSI increases the number of generated voltage, which allows improving the quality of itswaveform and thus improves the DTC strategy. The system modeling and control are implemented in Matlab/Simulink environment. The analysis of simulation results shows the better performances of this control, especially interms of torque and flux behavior, compared to conventional DTC. |
