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Numerical simulation of shrink‐fit motor using gradient Si steel
Author(s) -
Koseki Shinji,
Oda Yoshihiko,
Hiratani Tatsuhiko,
Kasai Shoji,
Zaizen Yoshiaki
Publication year - 2018
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.12071
Subject(s) - electrical steel , shearing (physics) , materials science , composite material , velocity gradient , temperature gradient , metallurgy , mechanics , physics , quantum mechanics
A gradient Si steel sheet shows low iron loss in the high‐frequency range and lower iron loss deterioration under compressive stresses, therefore, it is suitable for use as the core material of high‐speed motors, which have seen considerable downsizing in recent years. By performing shearing and shrink‐fitting, the advantages of gradient Si steel as a motor material are investigated in this study. In both shearing and compressive stress experiments, gradient Si steel showed lower iron loss compared to conventional nonoriented electrical steel (0.2 mm thick). By numerical simulation, the efficiencies of the shrink‐fitted motors using gradient Si steel and 3% Si steel were calculated. The motor using the gradient Si steel showed significantly higher efficiency than that using the 3% Si steel. Moreover, even under city driving conditions, gradient Si steel showed good efficiency, because of lower iron loss deterioration. Therefore, gradient Si steel can be used for a wide variety of motors in addition to high‐frequency devices.