摘要:
In order to cool the windings, core and optionally the wall of the element (1) receiving the windings (3,4) and the core (2) as effectively as possible, conducting surfaces (5, 6, 8,15) are disposed inside said element in such a way that the flow of coolant initially passes along the windings (3,4), followed by the limbs (21,22) of the core surrounded by the windings, and subsequently the other areas (23, 24, 1). Said arrangement of conducting surfaces is particularly suitable for use with transformers having superconductive windings made of HTSL conductor material. .
摘要:
A power transformer (1) having at least one electrical winding comprising electrical conducting means (13-15), cooling means for cooling the electrical conducting means to improve its electrical conductivity, and surrounding electrically insulating means (20-22) comprises an inner layer (20) of semiconducting material in electrical contact with said electrical conducting means, an outer layer (21) of semiconducting material at a controlled electrical potential along its length and an intermediate layer (22) of electrically insulating material between the said inner and outer layers (20, 21).
摘要:
A coreless transformer with a superconducting primary and secondary winding, wherein both the primary and the secondary winding are divided into a number of sub-windings (P1, P2, ..., S1, S2, ...) and wherein the sub-windings of the primary winding are concentrically interleaved with the sub-windings of the secondary winding forming an interleaved winding package (P1, S1, P2, S2, ...).
摘要:
The present invention relates to an electrical transformer which includes a primary winding (3) coupled to first and second magnetic circuits (1,2). A magnetic flux is driven through the magnetic circuits by the primary winding. First and second secondary windings (5,6) are also provided, each associated with a respective one of the magnetic circuits (1,2) and being electrically connected together in series opposition. A closed superconducting fault current winding (8) is also provided to link with the magnetic flux in the second magnetic circuit.
摘要:
A winding support body (6, 10) for transformers/reactors with a winding of a tape-formed superconductor (8), wherein the support body consists of a substantially straight, circular-cylindrical tubular body which, on the side where the winding is to be placed and out towards the two ends, is provided with a helical slot with a plane surface with a width equal to the width of the tape. In this way, each turn of the slot around the support body forms a surface which practically constitutes the envelope surface of a straight frustum of a cone. The angle (v) between a generatrix (9) of the envelope surface and the axial centre line of the support body increases for each turn out towards the ends of the support body in such a way that the envelope surface at all points coincides with the direction of the magnetic field.
摘要:
Um bei einem Transformator zur Versorgung von Antrieben, insbesondere einem Lokomotivtransformator, einen kompakten Aufbau zu erzielen, ist vorgesehen, daß der Transformator mit einer supraleitenden Wicklungsanordnung (1) ausgestattet und in einem Kyrostatgefäß angeordnet ist. Die verwendete Wicklungsanordnung (1) weist für jeden zu versorgenden Antrieb eine Wicklungsgruppe (W1 bis W4) auf, die jeweils eine Oberspannungswicklung (US1 bis US4) eine Unterspannungswicklung (US1 bis US4) und zumindest eine Schubwicklung (S11 bis L42) aufweisen. Die Oberspannungswicklungen (OS1 bis OS4) sind in Reihe geschaltet.
摘要:
A winding support body (6, 10) for transformers/reactors with a winding of a tape-formed superconductor (8), wherein the support body consists of a substantially straight, circular-cylindrical tubular body which, on the side where the winding is to be placed and out towards the two ends, is provided with a helical slot with a plane surface with a width equal to the width of the tape. In this way, each turn of the slot around the support body forms a surface which practically constitutes the envelope surface of a straight frustum of a cone. The angle (v) between a generatrix (9) of the envelope surface and the axial centre line of the support body increases for each turn out towards the ends of the support body in such a way that the envelope surface at all points coincides with the direction of the magnetic field.
摘要:
Thin-film transformer, for example suitable for use in a thin-film magnetic head, comprising a magnetic yoke composed of two magnetically permeable thin layers 3 and 5 and a primary turn constituted by an electrically conducting thin layer 13 and a secondary turn constituted by an electrically conducting thin layer 15. A thin layer 21 of a superconducting material is provided between the layer 3 and the said turns, or the turns are closely fitted together and made of a superconducting material themselves.