Abstract
Super conducting Magnetic Energy Storage (SMES) is very promising for the future power storage system because of fast response, low loss and high efficiency. We proposed the Force-balanced Coil (FBC) conccpt for the SMES and demons trated it by the experiment. Moreover, we studied on coil winding configuration for SMES. The results were compared with the toroidal type configuration and ordinary helical type one. It is shown that the Force-balanced Coil is superior than the others in view points of electromagnetic force and per-unit length stored energy of the superconductor. Finally, optimization of the Force-balanced Coil for SMES (FBC-SMES) has been done. The key parameters of super conductor stress, length, maximum field and stored energy were surveyed and optimized under the restriction of critical field and critical current. It is shown that the optimized FBC-SMES is obtained in case of which parameters are pitch ρ=3 and aspect ratio A=1.79
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