A Three Dimensional Analytical Study of the Excitation Field in a Permanent Magnet Synchronous Motor

2006 ◽  
Author(s):  
A. Youmssi
Keyword(s):  
Permanent Magnet ◽  
Analytical Study ◽  
Permanent Magnet Synchronous Motor ◽  
Three Dimensional ◽  
Synchronous Motor ◽  
Excitation Field

scholarly journals A Strange Double-Deck Butterfly Chaotic Attractor from a Permanent Magnet Synchronous Motor with Smooth Air Gap: Numerical Analysis and Experimental Observation

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Zhonglin Wang ◽  
Shijian Cang ◽  
Zenghui Wang ◽  
Wei Xue ◽  
Zengqiang Chen
Keyword(s):  
Permanent Magnet ◽  
Chaotic Attractor ◽  
Permanent Magnet Synchronous Motor ◽  
Three Dimensional ◽  
Synchronous Motor ◽  
Air Gap ◽  
Chaotic Attractors ◽  
Dimensional System ◽  
Periodic Input ◽  
Periodic Inputs

A permanent magnet synchronous motor (PMSM) model with smooth air gap and an exogenous periodic input is introduced and analyzed in this paper. With a simple mathematical transformation, a new nonautonomous Lorenz-like system is derived from this PMSM model, and this new three-dimensional system can display the complicated dynamics such as the chaotic attractor and the multiperiodic orbits by adjusting the frequency and amplitude of the exogenous periodic inputs. Moreover, this new system shows a double-deck chaotic attractor that is completely different from the four-wing chaotic attractors on topological structures, although the phase portrait shapes of the new attractor and the four-wing chaotic attractors are similar. The exotic phenomenon has been well demonstrated and investigated by numerical simulations, bifurcation analysis, and electronic circuit implementation.

scholarly journals Design and Analysis of a Permanent Magnet Synchronous Motor Considering Axial Asymmetric Position of Rotor to Stator

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4816
Author(s):  
Phuong Thi Luu ◽  
Ji-Young Lee ◽  
Ji-Heon Lee ◽  
Byung-Chul Woo
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Three Dimensional ◽  
Synchronous Motor ◽  
Axial Position ◽  
Prototype Model ◽  
Total Force ◽  
Element Analysis ◽  
Smart Actuator ◽  
Three Dimensional Finite Element

This paper presents the design and analysis of a permanent magnet synchronous motor (PMSM) considering the axial asymmetric PM overhang for a smart actuator (SA) application such as an isokinetic exercise machine. This structure helps take advantage of the motor space effectively and makes the system small in size and light in weight. However, two drawbacks related to the performance of motor occur when the axial asymmetric PM overhang is used: (1) an axial attractive force (AAF) is created, which can produce motor noise and vibration; (2) the torque of motor is reduced compared with the symmetric PM overhang model. We used five steps to solve these problems. Firstly, the AAF according to the variation in axial position of the rotor to the stator was calculated and analyzed. Secondly, the torque was calculated under the same conditions to confirm that the system requirements were satisfied. The three-dimensional finite element analysis was used to determine the AAF and torque. Thirdly, the appropriate axial position of the rotor to the stator was suggested considering the analysis results and space inside the housing. Next, the commercial bearing type was chosen so that the total force acting on the bearing was below the bearing load limit to ensure motor stability. Finally, a prototype model was made and tested to confirm the accuracy of the analytical results. Through this study, by using the axial asymmetric PM overhang, the total length of SA was reduced by 5mm and the performance of motor was guaranteed.

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