PARAMETERS IDENTIFICATION OF AN AG SHEATED BI(2223) TAPE MODEL

The modelisation of an Ag sheated Bi(2223) high temperature tape is pr esented. The identification of the model parameters is carried out usi ng adaptive identification techniques. It allows an accurate matching between measurements and theoretical models of the ouput response to a n applied signal. Besides the AC behaviour of the superconductive tape , the determination of the active and reactive components, the dynamic al properties are investigated for frequencies below or close to the p ower frequency and currents up to the critical one. The AC losses are described using a special equivalent circuit configuration. The Ag she ated Bi(2223) tapes are prepared by Professor Flukiger's team at the U niversity of Geneva, Switzerland.