Space Vector Based Random Pwm Algorithms Based Direct Torque Controlled Induction Motor Drive

摘要

In this proposed paper, to get fast transient response, DTC algorithm has to be developed for an /induction motor. Then, to get co nstant frequency, hysteresis controllers have to be replaced with space vector PWM (SVPWM) modulator. However, the SVPWM algorithm gives more harmonic distortion. Hence, to reduce the complexity involved in classical SVPWM algorithm and acoustical noise, various spread spectrum modulation methods which are also known as random pulse width modulation algorithms, have to be developed by using the instantaneous phase voltages only. The proposed paper mainly focuses on the generation of a family of spread spectrum modulation methods by using both space vector approach. To validate the proposed algorithms, several numerical simulation studies have been developed by using Matlab-Simulink. Finally the simulation results are compared with the existing methods