Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (7): 1008-1013.DOI: 10.12068/j.issn.1005-3026.2016.07.021

• Mechanical Engineering • Previous Articles     Next Articles

Torsional Vibration Characteristics of PMSM for HEV Considering the Electromagnetic Excitation

CHEN Xing1,2, YUAN Shi-hua1, CHEN Kai1, REN Yong2   

  1. 1. Science and Technology on Vehicular Transmission Laboratory, Beijing Institute of Technology, Beijing 100081, China; 2.Chongqing Changan New Energy Automobile Co., Ltd., Chongqing 401120,China.
  • Received:2014-11-21 Revised:2014-11-21 Online:2016-07-15 Published:2016-07-13
  • Contact: CHEN Xing
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Abstract: An nonlinear torsional vibration characteristics of permanent magnet synchronous motor’s rotor system under the electromagnetic and mechanical excitations were investigated. The model of electromechanical excitation was derived by an energy method. The method of multiple scales was used to solve the equation of motion. The steady state solutions and stability were determined. The effects of inner power factor angle, pole pairs, saturation coefficient and torsional stiffness of shaft on rotor system torsional vibration were studied. The results indicate that it could avoid the amplitude jump and bifurcation instability phenomenon through the reasonable control of permanent magnet synchronous motors and design of electromagnetic and mechanical parameters.

Key words: electromechanical coupling, PMSM (permanent magnet synchronous motor), torsional vibration, multiscale method, stability

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