AC Loss Property of Horizontal Array of Isolated REBCO Superconducting Tapes and Pancake Coils

Abstract

Accurate estimation of AC losses is crucial for designing superconducting motors with high output power, lightweight, and safety, particularly for aircraft applications. This study examined the AC losses in a horizontal array of REBa ₂ Cu ₃ O _y tapes to develop an accurate method for estimating AC losses in motors. The AC losses of the short tape samples and coil samples were measured. The characteristic parameters included the number of tapes/coils, n , and the distance between the tapes/coils normalized by the width of the superconducting layer, g / w . For small amplitudes of the applied field, the AC loss was found to be influenced by n and g / w . As n increased or g / w decreased, the AC loss increased. In addition, the applicability of the proposed AC loss estimation method is verified.