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A model quadrupole magnet for a future linear accelerator has been designed, fabricated, and tested at KEK. The model quadrupole is a superferric superconducting magnet with a design field gradient of 57 T/m. The design field gradient is obtained by saturating the iron yoke. Superferric magnets are considered to have the advantage of simplicity, less sensitivity to the position of the superconductor...
This paper shows permanent magnet synchronous motors with characteristics of bonded magnet. In general, most of PMSMs use the Nd-Fe-B sintered magnet. Although a magnetic energy of the bonded magnet is lower than of the Nd-Fe-B sintered magnet, a new Nd bonded magnet has higher permeability than the Nd-Fe-B sintered magnet and an eddy current is negligible. It is found that the flux weakening control...
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