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A novel synchronous permanent magnet planar motor and its model for control applications

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5 Author(s)
Jiayong Cao ; Inst. of Manuf. Eng., Tsinghua Univ., Beijing, China ; Yu Zhu ; Jinsong Wang ; Wensheng Yin
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A novel synchronous permanent magnet planar motor (SPMPM) with iron core is proposed. It has higher continuous force compared to the coreless SPMPM. In the novel SPMPM, two sets of windings for generating x-direction thrust and y-direction thrust are perpendicularly fixed in the x-direction slots and y-direction slots of a mover core, respectively. For control system development applications, an electromagnetic model is derived and the analytical method for calculating the model parameters is also reported. The model describes an important characteristic of the novel SPMPM that the x-direction thrust and y-direction thrust are independent of each other. To verify the model and the parameter calculation method, the finite element method (FEM) is used for calculating the phase inductances and electromagnetic forces of an example SPMPM. The results from FEM are in good agreement with the results from the analytical equations. It demonstrates the feasibility and credibility of the proposed model and parameter calculation method to a certain extent.

Published in:

IEEE Transactions on Magnetics  (Volume:41 ,  Issue: 6 )