Nb/sub 3/Sn/NbTi superconducting windings for 30 MVA synchronous rotary condenser
Conference
·
· IEEE Trans. Magn.; (United States)
OSTI ID:6243184
This paper is concerned with the construction and the test of superconducting coils for the field of a 30 MVA synchronous rotary condenser. The superconducting field is a dipole magnet which consists of 8 coils. Two coils are made of Nb/sub 3/Sn monolithic conductors. Another six coils are made of NbTi monolithic conductors. The heat treatment of Nb/sub 3/Sn conductors was made after winding. Coils were inserted into slots of a rotor and were fixed by wedges. Both conductors (NbTi, Nb/sub 3/Sn) are insulated by the helical wrap of insulation tapes. Thus, the conductors are directly cooled by liquid He. Superconducting coils were assembled into a rotor; the rotor was made of Ti and Ti alloy. The rotor was rotated up to 3900 rpm (108% over speed) for a rotor balancing, the maximum centrifugal force being up to 4200 (g gravity). Then, the rotor was cooled and the field winding was energized in liquid He. 5 refs.
- Research Organization:
- Mitsubishi Electr Corp, Amagasaki, Japan
- OSTI ID:
- 6243184
- Report Number(s):
- CONF-810340-
- Conference Information:
- Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: MAG-17:5
- Country of Publication:
- United States
- Language:
- English
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