Fundamental Properties of a New Superconducting Motor
We developed a brand new superconducting motor using high-Tc ceramic superconductors for the first time. This motor, named the “Meissner Motor” , utilizes the repulsive force caused by the Meissner effect, which appears below Tc and disappears above that. The motor rotated at a maximum speed of 40 rpm and generated a torque below 0.66 gf-cm. Though the repulsive force to drive the motor increased with the decrease of temperature or the increase of the gradient magnetic field, it was only about 1.1 gf/g at 77 K in 3500 G/cm and differs a little with the processes’ of magnetization. The rotating speed of the motor is limited by heating ability and the torque is limited by cooling ability.
KeywordsRepulsive Force Gradient Magnetic Field Rotational Position Meissner Effect Heat Flow Density
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