Title :
Magnetic field computation of axial flux permanent magnet machines with Halbach and axially magnetized rotor using quasi-3-D analysis modeling
Author :
Choi, Jang-Young ; Park, Yu-Seop ; Jang, Seok-Myeong
Author_Institution :
Dept. of Electr. Eng., Chungnam Nat. Univ., Dae-jeon, South Korea
Abstract :
This paper deals with magnetic field computation of axial flux permanent magnet (AFPM) machines with Halbach and axial magnetized rotor using quasi-3-D analysis modeling. On the basis of magnetic vector potential and polar-coordinate system, the magnetic field solutions due to Halbach and axially magnetized PM rotor are obtained. In particular, 3-D problem, that is, the reduction of magnetic fields near outer and inner radius of the PM is solved by introducing a special function for radial position. The predictions are shown in good agreement with those obtained from 3-D finite element analyses (FEA). Finally, on the basis of derived magnetic field solutions, comparison of AFPM machines with Halbach and axially magnetized rotor is carried out, in terms of magnetic aspects.
Keywords :
finite element analysis; permanent magnet machines; rotors; AFPM machines; axial flux permanent magnet machines; magnetic field computation; magnetic vector potential; magnetized rotor; polar-coordinate system; quasi-3D analysis modeling; with finite element analyses; Equations; Finite element methods; Iron; Magnetic analysis; Magnetic fields; Magnetic flux; Permanent magnet machines; Permanent magnets; Rotors; Saturation magnetization;
Conference_Titel :
Electromagnetic Field Computation (CEFC), 2010 14th Biennial IEEE Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4244-7059-4
DOI :
10.1109/CEFC.2010.5480486