@article{Patel Tejas I_Pritesh Mankad R_Aboti Ashish N_2015, title={Improved Flux Estimation Technique For Direct Torque control of Induction Motor Drives}, volume={2}, url={https://ijaerd.com/index.php/IJAERD/article/view/1184}, abstractNote={<p>Induction motors are the starting point to design an electrical drive system which is widely used in ma ny<br>industrial applications. In recently various speed control technique are used. But the direct torque control (DTC) scheme<br>being one of the most recent steps in this direction. This scheme provides excellent properties of regulation without<br>rotational speed feedback. In this control scheme the electromagnetic torque and stator flux magnitude are estimated<br>with only stator voltages and currents and this estimation does not depend on motor parameters except for the stator<br>resistance. Literature review has been done to study the recent improvements in DTC scheme especially in low speed<br>range operation to improved flux estimation and reduce the torque ripple problem.<br>The conventional direct torque controlled scheme used voltage model for flux estima tion but this model estimate<br>inaccurate flux at lower speed. So due to inaccurate flux estimation DTC drive give poor performance by distortion of<br>stator current and torque ripple. So here I have present another model for flux estimation which gives best DTC drive<br>performance at lower speed.</p>}, number={5}, journal={International Journal of Advance Engineering and Research Development (IJAERD)}, author={Patel Tejas I and Pritesh Mankad R and Aboti Ashish N}, year={2015}, month={May}, pages={1393–1402} }