MULTI-BASIS WAVENET-BASED SPEED ESTIMATION IN DIRECT TORQUE CONTROLLED ASYNCHRONOUS MOTOR
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Abstract
This paper presents a proposed method for speed estimation of asynchronous motor in Direct Torque Control (DTC) system, based on a new architecture of multi-basis wavenet model. Such multi-basis model utilizes multi-set daughter wavelets. Firstly, the structure and training algorithm of the proposed method is discussed. The descent gradient method is used to fulfill both system structure and parameters initialization. Secondly, the proposed speed estimator and the DTC asynchronous motor are combined based on stator current signal and the motor speed is then estimated online with the operation of the system. Finally, the effectiveness of this method is proved by simulation carried out using Matlab/Simulink library and compared with the actual results obtained from the dynamic equations of the motor. The simulation results are obtained over the entire speed of starting, load conditions and motor braking. These results show that the proposed method is effective for speed estimation in DTC drives.
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C. J. Chen and T. C. Chen, "Speed Sensorless of an Induction Motor Using Self-Tuning Fuzzy Identification", 2 International Conference on Information and Control ICICIC, 5-7 Sep. 2007.
C. Lascu and A. M. Trzynadlowski, "A Sensorless Hybrid DTC Drive for High Volume Low-Cost Application", IEEE Trans. Ind. Electron., Vol. 51, No. 5, pp. 1048-1055, Oct. 2004.
C. Lascu, and F. Blaabjerg, "A Modified Direct Torque Control for Induction Motor Sensorless Drive", IEEE Trans. Ind. Applicat., Vol.36, No. 1, Jan/Feb., 2000.
C. Schauder, "Adaptive Speed Identification for Vector Control of Induction Motors without rotational transducers", IEEE Trans. Ind. Applicat, Vol. 28, No. 5, pp. 1054-1061, Sept./Oct. 1992.
C. Zhi Cao, Mu ping Lu, and Xin Wang. "Speed Estimation and Stimulation of DTC System Based on Wavelet Neural Network", Proc. On 2nd International on Machine Learning and Cybernetics, Xi'an, 2-5 Nov. 2003.
G. S. Buja and M. P. Kazmierkowski. "Direct Torque Control of PWM Inverter-Fed AC Motors-A Survey", IEEE Trans. Ind. Electron., Vol. 51, No. 4, pp. 744-757, Aug. 2004.
G. Yang and T.-H. Chin, "Adaptive-Speed Identification Scheme for a Vector-Controlled speed Sensorless Inverter Induction Drive" IEEE, Trans. Ind. Applicat, Vol. 29, No. 4, pp 820-825, July/Aug 1993.
H. Kubota, K. Matsuse, and T. Nakano, "DSP-Based Speed Adaptive Flux Observer of Induction Motor", IEEE Trans. Ind. Applicat., Vol. 29, No. 2, pp. 344-348. Mar Apr. 1993
J. Maes and A. Melkebeek. "Speed Sensorless Direct Torque Control of Induction Motors Using Adaptive Flux Observer", IEEE Trans. Ind. Applicat., Vol., 36, No. 3, pp. 778-785, May/June 2000.
L. Brahim and R. Kurosawa, "Identification of Induction Motor Speed Using Neural Networks", in PCC-Yokohama, pp. 689-694, 1993.
M. A. Alwan, J. M. Abdul-Jabbar and A. A. Obed." Speed Estimation of DTC Induction Motor Using Single Current Sensor Based on Wavenet Theory". Basrah Journal of Engineering Sciences, Vol. 8. No. 1, pp 27-38, 2008.