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  4. Principles and Test Result of Novel Full Passive Magnetic Levitation Motor with Diamagnetic Disk
 
conference paper

Principles and Test Result of Novel Full Passive Magnetic Levitation Motor with Diamagnetic Disk

Ozawa, Yoshiki
•
Fujii, Yusuke
•
Chiba, Akira
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January 1, 2021
2021 Ieee Energy Conversion Congress And Exposition (Ecce)
13th IEEE Energy Conversion Congress and Exposition (IEEE ECCE)

This paper proposes a novel full passive magnetic levitation motor without active magnetic suspension. It has a magnetic levitation unit and a motor unit. The Halbach array permanent magnets and a pyrolytic graphite (PG) disk realize the full passive magnetic levitation. The rotational motor torque is generated by a coreless motor. The axial and radial stable forces are calculated by the diamagnetic equation based with magnetic field distribution given by the 3-D FEM analysis. In experiment, the static levitation force and axial vibrations are measured and speed control test is conducted as high as 4000 r/min.

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