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Prediction of rotating losses in heteropolar radial magnetic bearings
"... Previously, thin plate assumptions have been used to obtain a onedimensional eddy current model for predicting the stationary, transformertype losses in magnetic bearings built out of laminated material. Using similar assumptions as in the 1D eddy current model, rotating losses can be predicted f ..."
Abstract

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Previously, thin plate assumptions have been used to obtain a onedimensional eddy current model for predicting the stationary, transformertype losses in magnetic bearings built out of laminated material. Using similar assumptions as in the 1D eddy current model, rotating losses can be predicted for a laminated heteropolar radial magnetic bearing. The thin plate model of rotating losses yields a hybrid analyticalboundary element model that is computationally inexpensive to implement. Predictions from this model compare favorably to losses experimentally measured in rotor rundown tests.
SelfSensing Magnetic Bearings Driven by a Switching Power Amplifier
, 1996
"... Active magnetic bearings require some form of control, based on feedback of the position of the suspended object, to overcome openloop instability and to achieve targeted system performance by modifying the bearing dynamics. In many applications of magnetic bearings, a need to eliminate discrete p ..."
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Active magnetic bearings require some form of control, based on feedback of the position of the suspended object, to overcome openloop instability and to achieve targeted system performance by modifying the bearing dynamics. In many applications of magnetic bearings, a need to eliminate discrete position sensors may arise either from economic or reliability considerations. Magnetic bearings which estimate the position from the information available in the electromagnet signals are referred to as "selfsensing".
A Thin Plate Model for Predicting Rotating Losses in Magnetic Bearings
"... Previously, thin plate assumptions have been used to obtain a onedimensional eddy current model for predicting the stationary, transformertype losses in magnetic bearings built out of laminated material. Using similar assumptions as in the 1D eddy current model, rotating losses can be predicted f ..."
Abstract
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Previously, thin plate assumptions have been used to obtain a onedimensional eddy current model for predicting the stationary, transformertype losses in magnetic bearings built out of laminated material. Using similar assumptions as in the 1D eddy current model, rotating losses can be predicted for a laminated heteropolar radial magnetic bearing. The thin plate model of rotating losses yields a hybrid analyticalboundary element model that is computationally inexpensive to implement. Predictions from this model compare favorably to losses experimentally measured in rotor rundown tests.