Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (4): 51-55.

• Power & Electrical Engineering • Previous Articles     Next Articles

Simulation of Direct Torque Control for PM SM Based on Fuzzy Algorithm

Yang Xiang-yu  Zhu Wei-hua  Yao Jia   

  1. College of Electric Power,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-04-26 Online:2006-04-25 Published:2006-04-25
  • Contact: 杨向宇(1963-)，男，教授，博士生导师，主要从事电气传动系统及其控制研究. E-mail:epxyyangOl@sina.com
  • About author:杨向宇(1963-)，男，教授，博士生导师，主要从事电气传动系统及其控制研究.
  • Supported by:

    广东省自然科学基金资助项目(31384)

PDF

1147

Abstract:

To solve the problem of big torque ripples in the direct torque control(DTC)of PMSM,a novel DTC method is proposed,in which the hysteresis controller is replaced by a fuzzy controller.Then,a fhzzy logic-based DTC system for PMSM is simulated using the FIS tool box of Matlab/Simulink.The results indicate that,in the proposed fuzzy logic-based DTC system,the errors on the torque and the stator flux linkage can be fuzzy classified and a suitable voltage vector can be obtained according to the torque location,thus reducing the torque and the flux linkage ripples.Moreover,the fuzzy logic-based DTC can effectively reduce the torque ripples caused by the hyster-esis loop.It is concluded that the proposed method is superior to the traditional controller in both speed and torque response.

Key words: permanent magnet synchronous motor, fuzzy logic, direct torque control, hysteresis controller