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Self-sensing magnetic bearings don’t have any position sensors. For this reason, self-sensing magnetic bearings are very promising for the maintenance free. They are useful for hydrogen pumps for rocket engines and hydrogen station of the fuel cars. Our self-sensing magnetic bearing gets the rotor position information from the middle point voltage. The control of levitation was performed by using this voltage. In this study, we propose a new type of self-sensing magnetic bearing technique and study the characteristics. And we verified that the self-sensing technique is useful in the extremely low temperature.

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Booktitle: Proceedings of ISMB11