【摘要】 高温超导线材的临界电流密度受磁场的影响,在设计计算时,通常假设在线圈截面上电流密度是均匀分布的。但是,实际上在线圈截面上,电压是一致的。由于线圈中的磁场不均匀分布,各处的临界电流密度是不同的。采用数值模拟的方法,分析了高温超导线圈截面上的临界电流分布。结果显示,临界电流密度的分布是不均匀的,总的临界电流可比按均匀分布时的计算结果提高25%以上。更多还原

【Abstract】 Current density is influenced by flux density in high temperature superconducting coil.Typically the maximum current can be calculated by assuming uniform current density across the coil section in the presence of a flux gradient within the coil.But actually the current density is not the same everywhere because of magnetic flux gradient.Assuming no voltage difference on the width of the tape,the redistribution within the coil was calculated.According to calculation result,the increase in critical current can be more than 25%.更多还原