Title :
Design of slotless-type PMLSM for high power density using divided PM
Author :
Kim, Mi-Yong ; Kim, Yong-Chul ; Kim, Gyu-Tak
Author_Institution :
Dept. of Electr. Eng., Changwon Nat. Univ., Gyeongnam, South Korea
fDate :
3/1/2004 12:00:00 AM
Abstract :
A slotless permanent magnet linear synchronous motor (PMLSM) has a low power density due to having a large air-gap structurally. In this paper, an increase of power density of the slotless-type PMLSM is presented by inserting the core between each phase windings. The permanent magnet (PM) is divided into two pieces to reduce detent force and eliminate high-order space harmonics affecting the thrust ripples. All analysis values are calculated with two-dimensional finite-element method.
Keywords :
finite element analysis; linear synchronous motors; machine theory; permanent magnet motors; air-gap; divided PM; finite-element method; high power density; phase windings; slotless permanent magnet linear synchronous motor; slotless-type PMLSM; space harmonics; thrust ripples; Air gaps; Controllability; Finite element methods; Fourier series; Magnetic analysis; Magnetic cores; Magnetic flux; Magnetic flux density; Permanent magnets; Synchronous motors;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.824726
