Title :
Application of fine-grained doubly oriented electrical steel to IPM synchronous motor
Author :
Tomida, Toshiro ; Sano, Naoyuki ; Hinotani, Shigeharu ; Fujiwara, Koji ; Kotera, Hidetoshi ; Nishiyama, Noriyoshi ; Ikkai, Yasufumi
Author_Institution :
Corporate R&D Labs., Sumitomo Metal Ind. Ltd., Amagasaki, Japan
Abstract :
Application of fine-grained doubly oriented electrical steel sheets that have a strong {100}<001> texture to synchronous interior permanent magnet motors has been investigated. The alteration in stator core material from high grade nonoriented electrical steel sheets to the doubly oriented material with a simple change in stator design was found to lead to an increase in efficiency up to more than 2%. This efficiency increase is ascribed to a larger permeability and a lower iron loss in two perpendicular directions of the doubly oriented material. Finite-element analysis has revealed that the magnetic field distribution in stator cores made of the doubly oriented material is largely different from that in stator cores made of the nonoriented material.
Keywords :
alloy steel; finite element analysis; grain size; magnetic cores; permanent magnet motors; sheet materials; stators; synchronous motors; IPM synchronous motor; doubly oriented material; fine-grained electrical steel; finite-element analysis; interior permanent magnet motors; iron alloys; magnetic anisotropy; magnetic field distribution; magnetic materials; stator core material; stator cores; Building materials; Finite element methods; Iron; Magnetic materials; Permanent magnet motors; Permeability; Sheet materials; Stator cores; Steel; Synchronous motors; Iron alloys; magnetic anisotropy; magnetic materials; stators; synchronous motors; texture;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854867
