【摘要】 分析了不同结构超导储能磁体的特点,针对储能量为MJ量级的超导储能磁体计算了漏磁场分布和超导材料的利用率,提出了储能为1MJ的单螺管型超导储能磁体的设计方案。采用窄液氦通道技术,利用多芯NbTi/Cu复合超导线,研制了储能量为1MJ的紧凑型超导储能磁体。磁体内径为439mm,外径为600mm,高为550mm。在运行电流为305A时,磁体的最大磁场为4.9T,中心磁场为4T。对超导磁体的试验结果表明,磁体的最大运行电流为303A,放电功率为100kW。研制的超导储能磁体可作为恒压/恒功率放电的不间断电源的关键部件。更多还原

【Abstract】 The MJ class superconducting magnets for superconducting magnetic energy storage(SMES) are modeled for the toroid,multi-solenoid and single solenoid configurations.The single solenoid magnet,with the most economical superconducting material usage,is chosen as the 1MJ superconducting magnet congfiguration in spite of its stray field limitations.Single strand NbTi/Cu round wire is used for high current density magnet windings.The narrow liquid helium channels are formed between layers to enhance the cooling effect during magnet charging and discharging.The inner diameter,outer diameter and height of the magnet are 439,600 and 550 mm respectively.The central magnetic field is 4 T at an operating current of 305 A,wile the maximum field is 4.9 T.Inductance of the magnet is designed as 22.1 H.Tests on the magnet in a compact liquid helium cryostat have been performed and the results show that the maximum operating current is 303A and the discharging power is over 100 kW.The magnet can be used for demonstrating UPS-SMES experiments.更多还原