Abstract
A high-speed motor and a DC brush-less motor for factory automation (FA) were made to investigate the applicability of the powder magnetic core to motor application. The performances of these motors were compared with the similar motors having conventional electromagnetic steel core. Although the permeability and saturated magnetization of powder magnetic core were less than those of electromagnetic steel core, the output performances of each core motor were almost the same. The FA motor with powder magnetic core using three-dimensional magnetic circuit showed higher torque than the electromagnetic steel core motor with the same volume.
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