Comparison of direct torque and vector control theory essay
This article presents the different control methods of the induction machine, such as the scalar control, direct torque control DTC and the indirect field-oriented control IFOC. The working principle with the required mathematical equations and the Simulink models for the DTC and IFOC methods are also described in detail. Performance and energy efficiency of induction motors IM used in EV electric vehicles, by applying two control methods, namely the indirect field -oriented control IFOC method and the DTC method with direct torque control are compared. The tracking accuracy under changing vehicle speed conditions for different speed controllers. To further reduce the torque, flux linkage fluctuation and current harmonic content of dual three-phase permanent magnet synchronous motors, this paper proposes a direct torque control strategy combined with a master-slave virtual vector duty cycle assignment. There are two types of virtual voltage vectors with different amplitudes. This book covers the design and analysis of Direct Torque Control DTC. It introduces readers to two major applications of electrical machines: speed drive and position control and gives readers a comprehensive overview of the field of DTC devoted to AC machines. It includes new DTC approaches with and without control of. In the proposed technique, the difference between the existing stator flux and the flux error reference value and the difference between the motor torque and the torque error reference value are controlled through a hysteresis cycle with the defined levels and assumptions. The authors of 9, 11 have presented a comprehensive comparative study on the direct torque control and field-oriented vector control intended for a WPCS with PM generator. The same goes for the. The Direct Torque Control DTC method is an important technique used to control the torque and flux of AC motors. This method is attractive because of its simplicity, robustness and wide range of applications, such as robotics and electric cars. Three-phase motors are widely used in various industrial applications. The,