Title :
Magnetic Field Analysis of a Coreless Permanent Magnet Synchronous Motor
Author :
Wang, Xiaoyuan ; Qi, Lixiao ; Zhao, Fang ; Du, Jingjuan
Author_Institution :
Sch. of Electr. Eng. & Autom., Tianjin Univ.
Abstract :
The paper deals with a new disk type coreless PMSM (permanent magnet synchronous motor), consisting of only stator winding and twin rotor system a double sided rotor with internal stator. To obtain required value of the magnetic flux density in the air gap, PMs have been arranged in "Halbach array". At the same time, to make the magnetic flux density wave going closer to sine wave, the design criteria for the arrangement and dimension of the PMs is developed. The FEM analysis has been done to prove that the arrangement of the twin rotor PMs into 45deg Halbach array is more suitable to this motor than 90deg and 60deg. The peak value of the magnetic flux density can exceed 0.56 T. This is a sufficient value to design a high power density machine
Keywords :
air gaps; design engineering; finite element analysis; magnetic fields; magnetic flux; permanent magnet motors; rotors; stators; synchronous motors; FEM analysis; Halbach array; air gap; coreless permanent magnet synchronous motor; disk type coreless PMSM; high power density machine; magnetic field analysis; magnetic flux density wave; stator winding; twin rotor system; Magnetic analysis; Magnetic cores; Magnetic fields; Magnetic flux; Magnetic flux density; Permanent magnet motors; Rotors; Stator cores; Stator windings; Synchronous motors;
Conference_Titel :
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0320-0
DOI :
10.1109/CEFC-06.2006.1633077
