800 kJ HTS SMES的首次测试
First tests of a 800 kJ HTS SMES
摘要:
采用高临界温度超导体的超导储能系统是高功率脉冲电源的一个研究热点。在20 K以上的温度下工作使低温更容易,提高了稳定性,并改善了脉冲电源的工作。在一个DGA(代表团生成pour 'Armement)项目的背景下,我们设计并建造了一个800 kJ的SMES。线圈缠绕有由Bi-2212 PIT带并联焊接制成的Nexans导体。该线圈由26个叠加的简单煎饼缠绕和粘合在切片铜板涂有环氧树脂。额定电流为315 A,能量为814 kJ。线圈的外径为814 mm,高度为222 mm。20 K时的冷却仅通过低温冷却器的传导进行,使低温对SMES用户非常友好和无形。冷却已成功进行,热系统按设计工作。在简要介绍超导磁储能系统的设计和结构之后,将介绍一些试验。从244 A的电流开始,SMES向最大功率为175 kW的电阻提供425 kJ。
英文摘要:
SMES using high critical temperature superconductors are interesting for high power pulsed sources. Operation at temperatures above 20 K makes cryogenics easier, enhances stability and improves operation as pulsed power source. In the context of a DGA (Delegation Generate pour l'Armement) project, we have designed and constructed a 800 kJ SMES. The coil is wound with Nexans conductors made of Bi-2212 PIT tapes soldered in parallel. The coil consists in 26 superposed simple pancakes wound and bonded on sliced copper plates coated with epoxy. The rated current is 315 A for an energy of 814 kJ. The external diameter of the coil is 814 mm and its height 222 mm. The cooling at 20 K is only performed by conduction from cryocoolers to make cryogenics very friendly and invisible for the SMES users. The cooling down has been successfully carried out and the thermal system works as designed. After a brief description of the SMES design and construction, some tests will be presented. From a current of 244 A, the SMES delivered 425 kJ to a resistance with a maximum power of 175 kW.
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