Study on the magnetic harmonic gear with stackable structure - Improvement of its torque density

Article type: Research Article

Authors: Chigira, Koji^a | Kurahashi, Takahito^a | Ando, Yoshinori^{a; b;} | Murakami, Iwanori^a

Affiliations: [a] Department of Mechanical Science and Technology, Gunma University, Tenjin-cho, Kiryu, Japan | [b] Mechanical Science and Technology, Gunma University, Tenjin-cho, Kiryu, Japan

Correspondence: [*] Corresponding author: Yoshinori Ando, Department of Mechanical Science and Technology, School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376 8515, Japan. Fax: +81 277 30 1599; E-mail: ando@gunma-u.ac.jp

Abstract: The authors have been studying the magnetic harmonic gear with the stackable structure. In this paper, we propose a new magnetic harmonic gear which has the stackable structure. This new magnetic gear is expected that a torque characteristics are improved. The maximum transmission torque is calculated by simulation. The torque characteristics of a proposed magnetic gear are compared with that of the past magnetic gear. As the result, the maximum transmission torque of a proposed type is improved approximately 5.96 times and the torque density is improved about 3.82 times.

Keywords: Magnetic gear, magnetic flux, magnetization direction

DOI: 10.3233/JAE-171194

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 59, no. 2, pp. 629-637, 2019