Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (3): 331-335.DOI: 10.12068/j.issn.1005-3026.2015.03.007

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VSI Nonlinearity Compensation Based on Extended PI Reference Model of PMSM

YU Zi-song1, WANG Da-zhi1, GAO Qing-zhong2   

  1. 1.School of Information Science & Engineering, Northeastern University, Shenyang 110819, China; 2.School of Automation, Shenyang Institute of Engineering, Shenyang 110136, China.
  • Received:2014-01-23 Revised:2014-01-23 Online:2015-03-15 Published:2014-11-07
  • Contact: YU Zi-song
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Abstract: Output voltage distortion due to voltage source inverter (VSI) nonlinear gain in the permanent magnet synchronous motor (PMSM) driving system could result in the current distortion. A new SVPWM-VSI nonlinear compensation strategy was proposed. Extended d,q axis PI reference model of PMSM was investigated to separate the unknown disturbance voltage, and a nonlinear compensator was designed to compensate it. Zero-current-clamping phenomenon could be approximately eliminated by configuring the parameters of PI regulator properly. The parameter robustness and validity of the presented nonlinear compensator was verified by the Matlab/Simulink PMSM driving system simulation.

Key words: PMSM, VSI, nonlinear gain, extended PI reference model, nonlinearity compensation

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