Article,
Review of Improved Direct Torque Control Methodologies for Induction Motor Drives
International Journal of Innovative Research in Advanced Engineering, 1 (6): 393-399 (July 2014)
Abstract
Decoupled control of induction motor drives is possible using Direct Torque Control (DTC) method which is very simple control strategy compared to field oriented control. In this method direct torque control is achieved by selecting suitable inverter switching voltage vector from a lookup table. But drawback of this method is that it produces toque ripples. Also the switching frequency of inverter switches is not constant. Many methods have been proposed to address these issues of DTC. This paper reviews various methodologies which are suggested to improve performance of basic DTC induction motor drive.
