Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (9): 8-13.doi: 10.3969/j.issn.1000-565X.2015.09.002

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Fractional-Order Modeling of Permanent Magnet Synchronous Motor Based on Output-Error Algorithm

Zheng Wei-jia  Wang Xiao-hong  Pi You-guo   

  1. School of Automation Science and Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2015-02-12 Revised:2015-04-13 Online:2015-09-25 Published:2015-09-07
  • Contact: 王孝洪(1976-)，男，副教授，主要从事电力电子技术、运动控制技术及其应用研究． E-mail: xhwang@scut.edu.cn
  • About author:郑伟佳(1988-)，男，博士生，主要从事电动机分数阶建模与控制研究． E-mail: z.wj08@ mail.scut.edu.cn
  • Supported by:
    Supported by the High-Performance Digital Servo Drive Technology and Equipment for the Numerical Control Injection Molding Machine(2013B011301012)

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Abstract: In order to obtain a precise model of permanent magnet synchronous motor (PMSM)，a fractional-order
modeling approach of PMSM is proposed by combining the mechanism modeling and the numerical modeling． First，the model structures of electromagnetic part and mechanical part of PMSM are built on the basis of the composition mechanism of PMSM，and modeling experiments are conducted on the two parts． Then，the parameters of the two parts are identified by applying the output-error numerical fitting method，and the fractional-order model of PMSM is thus obtained． Finally，the speed controllers are designed on the basis of the obtained model，and the simulations and experiments of tracking the motor speed are performed． Simulation and experimental results show that the proposed fractional-order model can describe the nature of PMSM more precisely in comparison with the integer-order model．

Key words: synchronous motors, modeling, output-error algorithm, parameter identification, PI controller