Title :
A fast optimal flux search controller with improved steady state behavior for DTC based induction motor drives
Author :
Kaboli, S. ; Vahdati-Khajeh, E. ; Zolghadri, M.R. ; Homaifar, A.
Author_Institution :
Sch. of Electr. Eng., Sharif Univ. of Technol., Tehran
Abstract :
Flux search controllers are proposed to improve the efficiency of electrical motors especially induction motors. In this paper, a flux search controller is proposed to increase the efficiency of a direct torque controlled induction motor with light load. The reference flux value is determined through a two stage minimization algorithm with the amplitude of the stator current as the objective function. In the transient state, a great flux step is used to speed up the convergence. In the steady state, a noise cancellation algorithm is used to let using small flux step and improves the steady state behavior of flux controller. Simulation and experimental confirm the fast dynamics of the proposed method and its superiority compared to the other optimal flux search controllers
Keywords :
harmonics suppression; induction motor drives; machine control; stators; torque control; DTC based induction motor drives; direct torque control; noise cancellation algorithm; objective function; optimal flux search controller; reference flux value; steady state behavior; two stage minimization algorithm; Convergence; Induction motor drives; Induction motors; Lighting control; Minimization methods; Noise cancellation; Optimal control; Stators; Steady-state; Torque control;
Conference_Titel :
Electric Machines and Drives, 2005 IEEE International Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-8987-5
Electronic_ISBN :
0-7803-8988-3
DOI :
10.1109/IEMDC.2005.195954
