Damping in high-temperature superconducting levitation systems

Details Damping in high-temperature superconducting levitation systems Damping in high-temperature superconducting levitation systems

2007-05-07

2009-12-15

Barrera, Ramon M (Department: 2832)

Electrical generator or motor structure

Dynamoelectric

Rotary

C335S216000, C505S166000

Reexamination Certificate

active

07633202

ABSTRACT:
Methods and apparatuses for improved damping in high-temperature superconducting levitation systems are disclosed. A superconducting element (e.g., a stator) generating a magnetic field and a magnet (e.g. a rotor) supported by the magnetic field are provided such that the superconducting element is supported relative to a ground state with damped motion substantially perpendicular to the support of the magnetic field on the magnet. Applying this, a cryostat housing the superconducting bearing may be coupled to the ground state with high damping but low radial stiffness, such that its resonant frequency is less than that of the superconducting bearing. The damping of the cryostat may be substantially transferred to the levitated magnetic rotor, thus, providing damping without affecting the rotational loss, as can be derived applying coupled harmonic oscillator theory in rotor dynamics. Thus, damping can be provided to a levitated object, without substantially affecting the rotational loss.

REFERENCES:
patent: 06081843 (1994-03-01), None

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