Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Simulation of the Reduction of Force Ripples of the Permanent Magnet Linear Synchronous Motor

  • Chung, Koon-Seok (Dept. of Electrical and Electronic Engineering, Dong-A University) ;
  • Zhu, Yu-Wu (Dept. of Electrical and Electronic Engineering, Dong-A University) ;
  • Lee, In-Jae (Dept. of Electrical and Electronic Engineering, Dong-A University) ;
  • Lee, Kwon-Soon (Dept. of Electrical and Electronic Engineering, Dong-A University) ;
  • Cho, Yun-Hyun (Dept. of Electrical and Electronic Engineering, Dong-A University)
  • Published : 2007.06.01
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Abstract

The significant drawback of the permanent magnet linear synchronous motor (PMLSM) is force ripples, which are generated by the distortion of the stator flux linkage distributions, cogging forces caused by the interaction of the permanent magnet and the iron core and the end effects. This will deteriorate the performance of the drive system in high precision applications. The PMLSM and its parasitic effects are analyzed and modeled using the complex state-variable approach. To minimize the force ripple and realize the high precision control, the components of force ripples are extracted first and then compensated by injecting the instantaneous current to counteract the force ripples. And this method of the PMLSM system is realized by the field oriented control method. In order to verify the validity of this proposed method, the system simulations are carried out and the results are analyzed. The effectiveness of the proposed force ripples reduction method can be seen according to the comparison between the compensation and non-compensation cases.

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References

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