Direct Torque Control of Bearingless Induction Motor Using Space Vector Pulse Width Modulation Based on Fuzzy Adaptive Control

Abstract:

This paper presents a new strategy of direct torque controller for bearingless induction motor using space vector pulse width modulation based on fuzzy adaptive control. when we use direct torque controller using space vector pulse width modulation to take decoupling, the parameters of PI controller which generating the reference voltage vector in conventional SVM-DTC are difficult to determine the dynamic operation. In order to improve away the disadvantages of conventional SVM-DTC system, flux and torque fuzzy adaptive controller were designed to substitute the original flux and torque PI controller in the controlling for bearingless induction motor using space vector pulse width modulation. With the fuzzy algorithm, it is easy to obtain the control voltage component of the flux and torque respectively. Two voltage vectors achieve real-time adjustment and solve the disturbance problems in torque loop and flux loop. In this paper, the design process of the fuzzy adaptive controller is given. Use Matlab/Simulink to check the improved and traditional SVM-DTC method. The results show that the improved algorithms have a better performance in reducing the ripple of torque, flux and Rotor displacement when compared with the tradition DTC method. And it also improves the system dynamic performance.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 7321-7327
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.7321
• Online since: November 2011
• Authors: Luo Fei Wan, Xian Xing Liu, Zheng Qi Wang, Jin Wei Zhou
• Keywords: Bearingless Induction Motor, Direct Torque Control (DTC), Fuzzy Adaptive Controller, Space Vector Pulse Width Modulation (SVPWM)

References

[1] Deng Zhi quan, and Yan Yang guang, basic Theory and Research on bearingless Induction Motors, Electrical Technology of china, 2000, 15(2): 29-35.

[2] Li su Direct Torque Control on Induction motor, Beijing: China Machine Press, 1994: 1-63.

[3] Wang xiaolin, Deng zhiquan, and Zhang hongquan. Status and Research on Bearingless Induction Motor, , 2003, 24(5): 259-262.

[4] Zhang chunmei. Adaptive Fuzzy Controller on Fuzzy Direct Torque control., Journal of Small motor, 2001, 28(2): 13-15.

[5] Jun Liu, Pusheng Wu, et al. Application of Fuzzy Control in direct torque control of permanent magnet synchronous motor[C]/Proceedings of the 5th world congress on intelligent Control and Automation. 2004, 5: 4573-4576.

DOI: 10.1109/wcica.2004.1342383

[6] T. G. Habetler, F. Profumo, M. Pastorelli, and L.M. Tolbert, Direct torque control of induction machines using space vector modulation, IEEE Trans. Ind. Applicat., vol. 28, no. 5, pp.1045-1053, (1992).

DOI: 10.1109/28.158828

[7] JehudiM aes, Jan A. Melkebeek. Speed-sensorless Direct Torque Control of Induction Motors Using an Adap tive Flux Observer. IEEE. Trans. on Industry App lications, 2000, 36 (3) : 778～ 785.

DOI: 10.1109/28.845053