Solenoid-type superconducting magnetic energy storage (SMES) magnets have strong anisotropic field dependence. To enhance the minimum critical current located at two end, a novel flux diverter with a raised edge is investigated in this paper. Five small solenoid magnets having different axial layers and a fixed tape usage are used to evaluate and compare the effects of the raised-edge diverters on self-inductance, minimum critical current, and maximum energy storage capacity. An energy storage parameter KE(J/m) obtained by dividing the maximum energy storage capacity by the tape usage, and an available energy parameter Euse(J) at a fixed rated output current are introduced to evaluate the overall economical efficiency and to form some design guidelines for various small SMES magnets.
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Jin et al. (2018) studied this question.
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