A Shell Type Superconducting Transformer for Experiments Using Nb3Sn Superconducting Cables
| Autor: | Y. Fujiwara, Eiji Haraguchi, Shiro Nakamura, Yoshio Kubo, Masao Morita, Takashi Kaito, Kishida Takuya, Tadatoshi Yamada |
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| Rok vydání: | 1996 |
| Předmět: |
Superconductivity
Materials science Superconducting electric machine Energy Engineering and Power Technology Superconducting magnetic energy storage Magnetic field law.invention law Electromagnetic coil Electrical and Electronic Engineering Composite material Transformer Electrical impedance Voltage |
| Zdroj: | IEEJ Transactions on Power and Energy. 116:594-599 |
| ISSN: | 1348-8147 0385-4213 |
| DOI: | 10.1541/ieejpes1990.116.5_594 |
| Popis: | A shell-type superconducting transformer was developed for experiments using Nb3Sn superconducting cables. The designed capacity is 667 kVA (single phase), the voltage is 440/220 V, the current is 1515/3030 A and the percent impedance is 16 percent. Main features of the transformer are as follows: (1) Magnetic field in superconducting coils is decreased by increasing the number of high and low coil groups. (2) Large-scale superconducting cables are not needed when the number of high and low coil groups is increased. (3) Epoxy impregnated coils are used to withstand an electromagnetic force at 120 Hz. The Nb3Sn basic strand was manufactured by the internal tin diffusion process. The cable consists of seven insulated subcables, and the subcable consists of seven strands. The primary (HV) coil of the transformer was excited, in which the secondary (LV) coil was shortened. The primary current reached 1618 Arms without quenching, and the reached capacity corresponds to 712 KA. © 1997 Scripta Technica, Inc. Electr Eng Jpn, 118 (3): 13–21, 1997 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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