Performance Improvement of Operating Three-Degree-of-Freedom Spherical Permanent-Magnet Motor

2012 ◽  
Vol 48 (11) ◽  
pp. 4654-4657 ◽  
Author(s):  
H. J. Lee ◽  
H. J. Park ◽  
G. H. Ryu ◽  
S. Y. Oh ◽  
J. Lee
Keyword(s):  
Permanent Magnet ◽  
Performance Improvement ◽  
Degree Of Freedom ◽  
Permanent Magnet Motor ◽  
Three Degree Of Freedom

scholarly journals Analysis of Magnetic Field and Torque Features of Improved Permanent Magnet Rotor Deflection Type Three-Degree-of-Freedom Motor

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2533 ◽  
Author(s):  
Zheng Li ◽  
Xuze Yu ◽  
Zengtao Xue ◽  
Hexu Sun
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Degree Of Freedom ◽  
Structure Stability ◽  
Permanent Magnet Motor ◽  
Element Analysis ◽  
Radial Flux ◽  
Three Phase ◽  
Before And After ◽  
Three Degree Of Freedom

This paper proposes a novel layered permanent magnet motor (N-LPM), which is based on a three-degree-of-freedom (3-DOF) permanent magnet motor. Compared with the former, the improved N-LPM air gap magnetic density, torque and structure stability have been significantly improved. The proposed N-LPM has three layers of stator along the axis direction, and each layer of stator has three-phase winding. In order to calculate the magnetic field and torque distribution of the N-LPM, an analytical method (AM) is proposed. For performance verification and accurate calculation, finite-element analysis (FEA) is adopted. The two kinds of motors before and after the improvement are compared, and their magnetic field, torque and stability are analyzed. The optimization rate is defined to evaluate the performance of the motor before and after improvement. The results show that the radial flux density, rotation torque, deflection torque and the volume optimization rate of the permanent magnet of the improved motor are 80%, 25%, 50% and 54.72% respectively, and the comprehensive performance is improved significantly.

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