TY - GEN
T1 - Investigation of enhancing efficiency and acceleration in a flat shape axial gap motor having high torque characteristic
AU - Tsunata, Ren
AU - Takemoto, Masatsugu
AU - Ogasawara, Satoshi
AU - Watanabe, Asako
AU - Ueno, Tomoyuki
AU - Yamada, Koji
PY - 2017/5/6
Y1 - 2017/5/6
N2 - 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.
AB - 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.
KW - angular acceleration
KW - Axial gap motor
KW - coreless rotor structure
KW - Nd bonded PM
KW - radial gap motor
KW - soft mognetic composite
UR - http://www.scopus.com/inward/record.url?scp=85019980726&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85019980726&partnerID=8YFLogxK
U2 - 10.1109/ICMECH.2017.7921117
DO - 10.1109/ICMECH.2017.7921117
M3 - Conference contribution
AN - SCOPUS:85019980726
T3 - Proceedings - 2017 IEEE International Conference on Mechatronics, ICM 2017
SP - 278
EP - 283
BT - Proceedings - 2017 IEEE International Conference on Mechatronics, ICM 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 IEEE International Conference on Mechatronics, ICM 2017
Y2 - 13 February 2017 through 15 February 2017
ER -