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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2008, Vol. 9 Issue (4): 572-576    DOI: 10.1631/jzus.A071408
Electrical & Electronic Engineering     
Magnetic field and performance analysis of a tubular permanent magnet linear synchronous motor applied in elevator door system
Xiao LIU, Yun-yue YE, Zhuo ZHENG, Qin-fen LU
School of Electrical Engineering, Zhejiang University, Hangzhou 310027,China
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Abstract  A novel elevator door driven by tubular permanent magnet linear synchronous motor (TPMLSM) is presented. This TPMLSM applies axial magnet array topology of the secondary rod, air-cored armature windings and slotless structure of the forcer to improve the stability of the thrust. The influence of two major dimensions, the pitch and radius of the permanent magnet (PM), on magnetic field was studied and the best values were given by the finite element analysis (FEA). The magnetic field, back EMF and thrust of the motor were analyzed and the PM size was optimized to reduce the harmonic components of the magnetic field and improve the performance of the motor. Predicted results are validated by the experiment. It is shown that the performance of the motor and the novel elevator door system is satisfying.

Key words： Elevator door system      Tubular permanent magnet linear synchronous motor (TPMLSM)      Finite element analysis (FEA)     
Received: 25 July 2007      Published: 08 March 2008
CLC:  TM351  
  TM359.4  
  TM383.4+2  
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Xiao LIU
Yun-yue YE
Zhuo ZHENG
Qin-fen LU
Cite this article:

Xiao LIU, Yun-yue YE, Zhuo ZHENG, Qin-fen LU. Magnetic field and performance analysis of a tubular permanent magnet linear synchronous motor applied in elevator door system. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(4): 572-576.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A071408     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I4/572

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