COUPLED FEM AND SYSTEM SIMULATOR IN THE SIMULATION OF ASYNCHRONOUS MACHINE DRIVE WITH DIRECT TORQUE CONTROL

2007 ◽  
pp. 83-92 ◽  
Author(s):  
S. Kanerva ◽  
C. Stulz ◽  
B. Gerhard ◽  
H. Burzanowska ◽  
J. Järvinen ◽  
...  
Keyword(s):  
Direct Torque Control ◽  
Torque Control ◽  
Asynchronous Machine ◽  
Machine Drive

Fuzzy Logic Application for Intelligent Control of An Asynchronous Machine

2017 ◽  
Vol 7 (1) ◽  
pp. 61
Author(s):  
Zineb Mekrini ◽  
Seddik Bri
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Asynchronous Machine ◽  
Torque Response ◽  
Q Model ◽  
High Torque ◽  
Stator Flux

<p>The aim of this article is propose a method to improve the direct torque control and design a Fuzzy Logic based Controller which can take necessary control action to provide the desired torque and flux of an asynchronous machine. It’s widely used in the industrial application areas due to several features such as fast torque response and less dependence on the rotor parameters. The major problem that is usually associated with DTC control is the high torque ripple as it is not directly controlled. The high torque ripple causes vibrations to the motor which may lead to component lose, bearing failure or resonance. The fuzzy logic controller is applied to reduce electromagnetic torque ripple. In this proposed technique, the two hysteresis controllers are replaced by fuzzy logic controllers and a methodology for implementation of a rule based fuzzy logic controller are presented. The simulation by Matlab/Simulink was built which includes induction motor d-q model, inverter model, fuzzy logic switching table and the stator flux and torque estimator. The validity of the proposed method is confirmed by the simulative results of the whole drive system and results are compared with conventional DTC method. </p>

scholarly journals Backstepping/DTC control of a double star synchronous machine drive

2010 ◽  
Vol 20 (2) ◽  
pp. 227-247
Author(s):  
D. Boudana ◽  
L. Nezli ◽  
A. Tlemçani ◽  
M. Mahmoudi ◽  
M. Djemai ◽  
...  
Keyword(s):  
Coordinate Transformation ◽  
Dynamic Control ◽  
Direct Torque Control ◽  
Synchronous Machine ◽  
Double Star ◽  
Torque Control ◽  
Switching Frequency ◽  
Speed Controller ◽  
Machine Drive ◽  
Vector Modulation

Backstepping/DTC control of a double star synchronous machine driveDirect torque control (DTC) allows for very high quality torque control without a need for current controllers tuning or using coordinate transformation. However, barge torque ripples arise as well as inconstant inverter switching frequency due to the hysteresis of comparators. This paper present a backstepping/DTC control based on the space vector modulation (SVPWM) for double star synchronous machine (DSSM) to reduce the torque, flux, current and speed pulsations during steady state. By the coordinate transformation the DSSM models are presented in view of control. Then a conventional DTC is developed to get a decoupled system and a PI controller is designed to control the speed. To improve the static and dynamic control performance of the DSSM, the speed controller is designed using a backstepping/DTC procedure in conjunction with SVPWM. Simulation results with the conventional DTC and proposed backstepping/DTC are presented and compared. Results show the effectiveness and the robustness of the approach proposed.

Sign in / Sign up

Export Citation Format

Share Document