Journal
ACTUATORS
Volume 11, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/act11080208
Keywords
magnetic suspension; magnetic bearings; magnetic resonant coupling
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A three-degree-of-freedom AC magnetic suspension system using magnetic resonant coupling was fabricated, which can produce restoring force without active control. The system is dynamically stabilized by adding indirect damping, and non-contact electrical power transmission is achieved simultaneously.
A three-degree-of-freedom AC magnetic suspension system using magnetic resonant coupling was fabricated. The AC magnetic suspension system can produce restoring force without active control. This system is dynamically stabilized by adding indirect damping, which is produced by suspending to the stator with viscoelastic support mechanisms. A non-contact electrical power transmission is achieved simultaneously by magnetic resonant coupling. The structure of magnetic resonant coupling is similar to the structure of the transformer. The magnetic flux path for suspension is combined with that of electrical power transmission. The electric characteristics of the transformer depend on the resistance of a load connecting the secondary circuit. The measured results indicate that the driving frequency needs to be adjusted to achieve stable suspension in relation to the resistance of the load. These characteristics are confirmed experimentally.
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