Abstract
High-speed motors are effective for achieving high power in small motors, but the increase in core loss due to highfrequency excitation is a problem. The most effective way to reduce core loss in a motor is to use a magnetic material with a thin thickness. However, to further reduce core loss, it is necessary to optimize the iron core shape by numerical analysis considering the detailed magnetic properties of the magnetic material to be used in a motor. Vector magnetic property analysis can obtain detailed core loss distribution in a motor and is useful as a tool to support the motor core shape design for core loss reduction. This paper presents investigation examples of core loss reduction in motor stator iron core using the vector magnetic property analysis which the authors have carried out.
