Transformer with superconducting windings

Details Transformer with superconducting windings Transformer with superconducting windings

1998-06-01

2001-01-16

Mai, Anh (Department: 2832)

Inductor devices

With electric and/or magnetic shielding means

C336S08400R, C336S08400R

Reexamination Certificate

active

06175294

ABSTRACT:

TECHNICAL FIELD
One important condition for transformers to be provided with superconducting windings while at the same time becoming a competitive product in relation to transformers with conventional windings is that the alternating-current (ac) losses are minimized. Because the currently available high-temperature superconducting materials are designed as a tape, superconducting windings will resemble conventional sheet-wound windings. Since the ac losses in the superconducting tape are to a great extent dependent on the direction of an alternating magnetic field relative to the plane of the tape, special measures must be taken to be able to maintain the ac losses at an acceptable level. The present invention relates to a design which contributes to minimize these losses.


REFERENCES:
patent: 4012706 (1977-03-01), Westendorp
patent: 4021764 (1977-05-01), Winn
patent: 4135173 (1979-01-01), Philp
patent: 4356468 (1982-10-01), VanLaar
patent: 5689223 (1997-11-01), Demarmels et al.
patent: 516 078 A2 (1992-12-01), None
patent: 63-73511 (1988-04-01), None

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