Investigation of enhancing efficiency and acceleration in a flat shape axial gap motor having high torque characteristic
Investigation of enhancing efficiency and acceleration in a flat shape axial gap motor having high torque characteristic
复制标题
具有高扭矩特性的扁平轴向间隙电机的效率和加速度提高研究
DOI：
10.1109/icmech.2017.7921117
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Koji Yamada
中科院分区：
文献类型：
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作者：
R. Tsunata;M. Takemoto;S. Ogasawara;Asako Watanabe;T. Ueno;Koji Yamada
近年来，平板电机在机械臂、汽车等工业中的应用越来越广泛，因此本文讨论了具有平板优势的轴向间隙电机。通常，轴向间隙电机具有扁平形状的高转矩密度，因为其宽的气隙面积。因此，轴向间隙电机用于有限的空间，如盘形，而不是径向间隙电机，这是最通用的电机。然而，与径向间隙电机相比，轴向间隙电机由于转动惯量较大，加速度相对较低。提出了一种提高轴向间隙电机加速度的转子结构，并对其进行了三维有限元分析。另外，为了提高轴向间隙电机在高速大转矩区的效率，还对永磁体材料进行了合理的选择。最后，对轴向间隙电机和径向间隙电机的样机进行了实验评价。结果表明，轴向间隙电机比平面径向间隙电机具有更高的转矩和效率。提出的轴向间隙电机还实现了比径向间隙电机稍大的加速度。
In recent years, flat shape motors are desired for many industrial applications such as robot arm, automobiles and so on. Thus, this paper discusses axial gap motors which have advantage for flat shape. In general, axial gap motors have high torque density with flat shape because of its wide air-gap area. Axial gap motors are therefore used for limited space like disk shape instead of radial gap motors which are the most general motor. However, compared with radial gap motors, the acceleration of axial gap motors is relatively lower because of the larger moment of inertia. In this paper, rotor structure to enhance the acceleration of axial gap motors is proposed and analyzed by 3D-FEA. In addition, material for permanent magnet of axial gap motors is properly selected in order to enhance efficiency at high speed and high torque area. Finally, prototypes of both axial and radial gap motor with flat shape are evaluated by some experiments. It is found that proposed axial gap motor can achieve the higher torque and efficiency compared with the radial gap motor with flat shape. Proposed axial gap motor additionally achieved the slightly larger acceleration compared with the radial gap motor.