Superconducting Bearing Design for Outer Rotor Flywheel Using Lumped Parameter Techniques




Hearn, C.
Pratap, S. B
Chen, D, Longoria, R. G.

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This paper describes the application of lumped parameter modeling techniques to designing high temperature superconducting bearings for outer-rotor flywheel energy storage systems. The lumped parameter models decrease computational time by 99% compared to Finite Element Analysis (FEM) without compromising fidelity needed to capture the non-linear and hysteretic force-displacement behavior between a levitated permanent magnet and bulk superconductor. The techniques formulated can be used to quickly evaluate lifting capacity and translational stiffness for a superconducting bearing design. The validity of the modeling approach has been verified by comparing results from FEM studies and experimental tests. 


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C. Hearn, S. B. Pratap, D. Chen, R. G. Longoria, “Superconducting Bearing Design for Outer Rotor Flywheel Using Lumped Parameter Techniques”, 14th International Symposium on Magnetic Bearings, Linz, Austria, August 11-14, 2014.