Aiming at the torque and flux ripples in the direct torque control and the time-varying parameters for permanent magnet synchronous motor (PMSM), a model predictive direct torque control with online parameter estimation based on the extended Kalman filter for PMSM is designed. By predicting the errors of torque and flux based on the model and the current states of the system, the optimal voltage vector is selected to minimize the error of torque and flux. The stator resistance and inductance are estimated online via EKF to reduce the effect of model error and the current estimation can reduce the error caused by measurement noise. The stability of the EKF is proved in theory. The simulation experiment results show the method can estimate the motor parameters, reduce the torque, and flux ripples and improve the performance of direct torque control for permanent magnet synchronous motor (PMSM).
References
[1]
Shi, C., Qiu, J. and Jin, M. (2005) Comparative Study on Direct Torque Control of Permanent Magnet Synchronous Motor. Proceedings of the CSEE, 25, 141-146.
[2]
Jia, H.P. and He, Y.K. (2006) Sliding Mode Variable Structure Direct Torque Control of Permanent Magnet Synchronous Motor. Transactions of China Electrotechnical Society, 21, 1-6.
[3]
Hariri, A.M., Aliabad, A.D., Ghafarzadeh, M. and Shamlou, S. (2020) Design, Analysis, and Fabrication of a Direct Drive Permanent NdFeB Magnet Synchronous Motor for Precision Position Control. IET Electric Power Application, 14, 1438-1445.
https://doi.org/10.1049/iet-epa.2018.5542
[4]
Niu, F., Huang, X.Y. and Ge, L.J. (2019) A Simple and Practical Duty Cycle Modulated Direct Torque Control for Permanent Magnet Synchronous Motors. IEEE Transactions on Power Electronics, 34, 1572-1579.
https://doi.org/10.1109/TPEL.2018.2833488
[5]
Xu, Y.P. and Zhong, Y.R. (2009) Direct Torque Control of Permanent Magnet Synchronous Motor Combining Sector Subdivision and Duty Ratio Control. Proceedings of the CSEE, 29, 102-108.
[6]
Liu, Y.H., Huo, H., Chu, B., et al. (2013) Passivity-Based Torque Tracking Control and Adaptive Observer Design of Inducstion Motors. Control Theory and Applications, 30, 1021-1026.
[7]
Zhuang, X. and Rahman, M.F. (2007) An Adaptive Sliding Stator Flux Observer for a Direct-Torque-Controlled IPM Synchronous Motor Drive. IEEE Transactions on Industrial Electronics, 54, 2398-2406. https://doi.org/10.1109/TIE.2007.900328
[8]
Liu, J., Chu, X.G. and Bai, H.Y. (2005) Study of Permanent Magnet Synchronous Motor Direct Torque Control Based on the Strategy of Reference Stator Flux Linkage and Voltage Space Vector Modulation. Transactions of China Electrotechnical Society, 2005, 11-15.
[9]
Geyer, T., Papafotiou, G. and Morari, M. (2009) Model Predictive Direct Torque Control-Part I: Concept, Algorithm, and Analysis. IEEE Transactions on Industrial Electronics, 56, 1894-1905. https://doi.org/10.1109/TIE.2008.2007030
[10]
Morel, F., Lin-Shi, X.F., Retif, J., Allard, B. and Buttay, C. (2009) A Comparative Study of Predictive Current Control Schemes for a Permanent-Magnet Synchronous Machine Drive. IEEE Transactions on Industrial Electronics, 56, 2715-2728.
https://doi.org/10.1109/TIE.2009.2018429
[11]
Zhang, M., Xiao, X. and Li, Y.-D. (2007) Speed and Flux Observer of Permanent Magnet Synchronous Motor Based on Extended Kalman Filter. Proceedings of the CSEE, 27, 36-40.
[12]
Shi, K.L., Chan, T.F., Wong, Y.K. and Ho, S.L. (2002) Speed Estimation of an Induction Motor Drive Using an Optimized Extended Kalman Filter. IEEE Transactions on Industrial Electronics, 49, 124-133. https://doi.org/10.1109/41.982256
[13]
Bolognani, S., Tubiana, L. and Zigliotto, M. (2003) Extended Kalman Filter Tuning in Sensorless PMSM Drives. IEEE Transactions on Industry Applications, 39, 1741-1747. https://doi.org/10.1109/TIA.2003.818991
[14]
Sim, H.W., Lee, J. and Lee, K. (2014) On-line Parameter Estimation of Interior Permanent Magnet Synchronous Motor Using an Extended Kalman Filter. Journal of Electrical Engineering & Technology, 9, 600-608.
https://doi.org/10.5370/JEET.2014.9.2.600
[15]
Fan, M.D., Lin, H. and Lan, T.Y. (2014) Model Predictive Direct Torque Control for SPMSM with Load Angle Limitation. Progress in Electromagnetics Research B, 58, 245-256. https://doi.org/10.2528/PIERB14021106
[16]
Nair, D.S., Jagadanand, G. and George, S. (2021) Torque Estimation Using Kalman Filter and Extended Kalman Filter Algorithms for a Sensorless Direct Torque Controlled BLDC Motor Drive: A Comparative Study. Journal of Electrical Engineering & Technology, 16, 2621-2634.
