Abstract
This paper proposes a new type of self-bearing motor which uses Lorentz force. It is expected to have good dynamic response, and high levitation capability. For realizing high magnetic flux, Halbach magnetic circuit is designed and used for the rotor. First, the fundamental principle is introduced how the motor produces linear rotating torque and radial levitation force. Next, Halbach magnet is introduced and its flux distribution is analyzed using FEM. Finally the negative stiffness and the control force is calculated to confirm the stable levitation.
