Abstract
This paper discusses the increase in thrust with grain-oriented electrical steel sheets (GO) in plunger-type electromagnetic actuators. In these actuators, GO-laminated cores generate reluctance thrusts due to magnetic anisotropy energies in addition to conventional reluctances which are induced by the form anisotropies of the cores. Therefore, the maximum thrusts, which are induced at a displacement of about the core tooth width, increase by using GO-laminated core. The thrusts of GO cores are approximately 10% larger with high exciting current than those of non-oriented electrical steel sheet cores, and consequently may reduce copper losses by about 40% and iron losses by about 60%.
