A double sided stator type axial self-bearing motor development for left ventricular assist devices

Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015)

Guest editors: Fumio Kojima, Futoshi Kobayashi and Hiroyuki Nakamoto

Article type: Research Article

Authors: Kurita, Nobuyuki^{a; *} | Ishikawa, Takeo^a | Saito, Naoki^a | Masuzawa, Toru^b

Affiliations: [a] Division of Electronics and Informatics, Gunma University, Gunma, Japan | [b] Department of Mechanical Engineering, Ibaraki University, Ibaraki, Japan

Correspondence: [*] Corresponding author: Nobuyuki Kurita, Division of Electronics and Informatics, Gunma University, 1-5-1 Kiryu, Gunma 376-8515, Japan. E-mail:[email protected]

Abstract: A self-bearing motor that has tilt control function is proposed. The rotor has two permanent magnets on each side (four PMs in total). The two stators have eight poles each with concentrated windings. The operating principle was clarified by theoretical analysis and FEM analysis. Moreover, it was shown that the proposed motor can control the translation motion, inclinational and rotational motion independently. An experimental setup was fabricated and magnetically levitated rotation was achieved. The control performance of the self-bearing motor was also investigated. In addition, the proposed axial self-bearing motor is also designed and fabricated into a prototype maglev pump. Fabricated pump test rig showed sufficient performance for left ventricular assist device (LVAD) application of 4.35 L/min at 100 mm Hg.

Keywords: Self-bearing motor, magnetically levitated pump, ventricular assist device, total artificial heart

DOI: 10.3233/JAE-162175

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 1-2, pp. 199-206, 2016