TY - JOUR
T1 - Passive contra-magnetized parallel-airgap serial flux magnetic bearings
AU - Kalita, K
AU - Khoo, W K S
AU - Garvey, S D
AU - Hill-Cottingham, R J
AU - Rodger, D
AU - Eastham, J F
PY - 2010
Y1 - 2010
N2 - Conventional magnetic bearings accomplish a specific load capacity, defined as the ratio of maximum sustainable weight to the total self-weight, of up to 35:1. In this paper, the authors introduce a class of passive magnetic bearings that comprise a large number of parallel airgaps and discs and can deliver specific load capacities substantially higher than 35: 1. Two-dimensional planar, two-dimensional axi-symmetric, and three-dimensional finite-element analysis (FEA) have been undertaken to predict the force capability of the bearings. An unoptimized prototype passive magnetic bearing is constructed to demonstrate the concept and its force-carrying capacity. The experimental results are then compared with those obtained from the FEA. Further optimization of the bearings is done across the whole design space comprising tens of thousands of models using an automatic mesh generator in conjunction with solving the FE models in nested loops.
AB - Conventional magnetic bearings accomplish a specific load capacity, defined as the ratio of maximum sustainable weight to the total self-weight, of up to 35:1. In this paper, the authors introduce a class of passive magnetic bearings that comprise a large number of parallel airgaps and discs and can deliver specific load capacities substantially higher than 35: 1. Two-dimensional planar, two-dimensional axi-symmetric, and three-dimensional finite-element analysis (FEA) have been undertaken to predict the force capability of the bearings. An unoptimized prototype passive magnetic bearing is constructed to demonstrate the concept and its force-carrying capacity. The experimental results are then compared with those obtained from the FEA. Further optimization of the bearings is done across the whole design space comprising tens of thousands of models using an automatic mesh generator in conjunction with solving the FE models in nested loops.
KW - specific load capacity
KW - parallel-airgap serial flux
KW - passive magnetic bearing
UR - http://www.scopus.com/inward/record.url?scp=78649287054&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1243/09544062jmes2071
U2 - 10.1243/09544062jmes2071
DO - 10.1243/09544062jmes2071
M3 - Article
SN - 0954-4062
VL - 224
SP - 2515
EP - 2524
JO - Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
JF - Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
IS - C11
ER -