A superconducting magnet with 200 kJ stored energy and 75 kW output/input power has been designed and manufactured. The device, which is aimed to power quality enhancement in electric grid, consists of two coaxial coils, counter-series connected in order to keep the stray field below the limit of 0.5 mT. The SC wire is a copper stabilized Nb-Ti strand. Several copper slabs are placed within the coils in order to permit heat removal deep inside the coil, thus allowing cryogen-free cooling and operation at high AC losses regime. Several tests with different ramp rate have been carried out at the liquid helium temperature. Design and manufacturing characteristics as well as test results are discussed in this paper
A. Morandi, M. Breschi, M. Fabbri, F. Negrini, R. Penco, M. Perrella, et al. (2008). Design, Manufacturing and Preliminary Tests of a Conduction Cooled 200 kJ Nb-Ti micro-SMES. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 18(2), 697-700 [10.1109/TASC.2008.921285].
Design, Manufacturing and Preliminary Tests of a Conduction Cooled 200 kJ Nb-Ti micro-SMES
MORANDI, ANTONIO;BRESCHI, MARCO;FABBRI, MASSIMO;NEGRINI, FRANCESCO;RIBANI, PIER LUIGI;TREVISANI, LUCA
2008
Abstract
A superconducting magnet with 200 kJ stored energy and 75 kW output/input power has been designed and manufactured. The device, which is aimed to power quality enhancement in electric grid, consists of two coaxial coils, counter-series connected in order to keep the stray field below the limit of 0.5 mT. The SC wire is a copper stabilized Nb-Ti strand. Several copper slabs are placed within the coils in order to permit heat removal deep inside the coil, thus allowing cryogen-free cooling and operation at high AC losses regime. Several tests with different ramp rate have been carried out at the liquid helium temperature. Design and manufacturing characteristics as well as test results are discussed in this paperI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
