Title :
Eddy current loss in a moving-coil tubular permanent magnet motor
Author :
Hor, P.J. ; Zhu, Z.Q. ; Howe, D.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. Sains Malaysia, Perak, Malaysia
fDate :
9/1/1999 12:00:00 AM
Abstract :
The eddy current loss in the thrust rod of an iron-cored, 2-phase, tubular permanent magnet brushless motor is investigated by time-stepped transient finite element analysis. It is shown that the dominant cause of the loss is the permeance modulation which results from the teeth in the laminated thrust block, whose spacing is the same as the magnet pole-pitch. Loss predictions are validated by measurements
Keywords :
brushless machines; eddy current losses; finite element analysis; linear motors; machine theory; permanent magnet motors; brushless motor; eddy current loss; laminated thrust block; magnet pole-pitch; moving-coil tubular permanent magnet motor; permeance modulation; thrust rod; time-stepped transient finite element analysis; two-phase motors; Brushless motors; Eddy currents; Finite element methods; Hysteresis motors; Magnetic analysis; Magnetic anisotropy; Magnetic cores; Permanent magnet motors; Perpendicular magnetic anisotropy; Transient analysis;
Journal_Title :
Magnetics, IEEE Transactions on
