Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8153774 | Journal of Magnetism and Magnetic Materials | 2018 | 8 Pages |
Abstract
Active magnetic regenerators (AMR) have the potential for high efficiency cryogen liquefaction. One active magnetic regenerative liquefier (AMRL) configuration consists of dual magnetocaloric regenerators that reciprocate in a persistent-mode superconducting solenoid. Issues with this configuration are the spatial and temporal magnetization gradients that induce large magnetic forces and winding currents. To solve the coupled problem, we present a force minimization approach using passive magnetic material to balance a dual-regenerator AMR. A magnetostatic model is developed and simulated force waveforms are compared with experimental measurements. A genetic algorithm identifies force-minimizing passive structures with virtually ideal balancing characteristics. Implementation details are investigated which affirm the potential of the proposed methodology.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
R. Teyber, K. Meinhardt, E. Thomsen, E. Polikarpov, J. Cui, A. Rowe, J. Holladay, J. Barclay,