Sir i want matlab simulation file for DTC-SVM fed induction motor drive with parameters (Preset model)-400v 50Hz 1440rpm hope u will reply soon
if possible then please reply me on chandanvit12[at]gmail.com
By principle, direct torque control (DTC) is used to adjust stator flux and electromagnetic torque. Simple structure and very good dynamic behavior are main features of DTC. However, the classic DTC has some disadvantages, the most important of which is the high ripple pair. In this article we propose a variety of DTC combined with FOC structures. The hysteresis controllers and the switching table are replaced by PI controllers and spatial vector modulator. Three algorithms working on fixed switching frequency are developed, can overcome the aforementioned drawback. The proposed schemes are clearly described. The results of the simulation demonstrate the efficiency, reliability and correctness of the proposed methods.
Direct torque control (DTC) is widely used for AC drives. Attempts to combine DTC with space vector modulation (SVM) have led to new forms. A new approach to DTC-SVM is presented in this paper. A recurrent neural network (RNN) is used based on the correlated Real-Time Recurrent Learning (CRTRL) algorithm to estimate stator and rotor flux. Through the measurement of phase flow links and phase currents, the RNN can estimate the position of the rotor, thus facilitating the removal of the rotor position sensor. The fast dynamic speed response is obtained by maintaining the rotor flux constant as in the case of the field orientation control. The control method proposed herein may reduce torque, stator current and rotor flux undulations which improve the dynamic performance of the system and robustness under different operating conditions. The proposed controller is also computationally efficient.