Abstract
For high speed and long term rotor such as energy storage flywheel, eddy current in the laminated steel sheet causes rotating loss. In this paper a new type of magnetic bearing which is based on the hybrid type is proposed. The stator has the foot to smooth the flux distribution in the circumferencial direction. Hence the rotating loss is expected to be negligible. To confirm the operation of the proposed magnetic bearing a simple experimental setup was fabricated and tested. The results indicated good fundamental operation and low vibration level. The rotor could run up to 12, 600 rpm without any serious problem. The free-run test confirmed reduction of eddy current loss compared with the standard magnetic bearing.
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