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Implementation and Performance Analysis of Speed Control Strategy for Induction Motor using a Novel PLL and Discrete Fourier Transform

The paper presents implementation of speed control strategies for Induction motor using field oriented control and adaptive notch filters. The adaptive notch filters used for developing filed oriented control include EPLL and discrete Fourier transform. Co-simulation technique is employed by using Matlab/Simulink and PSIM softwares for implementing the speed control algorithm. The simulation results of these adaptive notch filters demonstrate the computation of torque and flux components in rotating reference frame. The practicability and reliability of these algorithms are validated by changing the reference speed and torque conditions. The simulation results demonstrate the performance of field oriented control algorithm using the discrete Fourier and EPLL for tracking the given reference speed. The results show that the modified control algorithm is efficient in reference tracking with improved computational efficiency.