Motor System Engineering Laboratory,
Graduate School of Natural Science and Technology,
In recent years, flat-shape motors are required in order to increase the added value of the motor system. An axial gap motor has therefore attracted attention because they achieve high torque density in flat-shape. On the other hand, motors which have high power density is also strongly required. Accordingly, it is important to accurately reveal the thermal characteristics in the motor. In this presentation, thermal characteristics of the axial gap motor is investigated by both thermal analysis in JMAG and experiments, and comparison between axial and radial gap motors is shown. In addition, the effects of aspect ratio on thermal characteristics of both motors are shown.
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