Abstract:
A superconducting transformer system is configured to be included within a utility power grid having a known fault current level. The superconducting transformer system includes a non- superconducting transformer (506) interconnected between a first node and a second node of the utility power grid. A superconducting transformer (500) is interconnected between the first node and the second node of the utility power grid. The superconducting transformer and the non-superconducting transformer are electrically connected in parallel. The superconducting transformer has a lower series impedance than the non-superconducting transformer when the superconducting transformer is operated below a critical current level and a critical temperature. The superconducting transformer is configured to have a series impedance that is at least N times the series impedance of the non-superconducting transformer when the superconducting transformer is operated at or above one or more of the critical current level and the critical temperature. N is greater than 1 and is selected to attenuate, in conjunction with an impedance of the non-superconducting transformer, the known fault current level by at least 10%.
Abstract:
A cryogenic container (10) includes an inner vessel (14) for containing a cryogenic fluid (16), and an outer vessel (12) for insulating the cryogenic fluid from the environment. The inner vessel (14) includes a superconductive layer (22) formed of a material having superconducting properties at the temperature of the cryogenic fluid (16). The superconductive layer (22) forms a magnetic field around the cryogenic container (10), that repels electromagnetic energy, including thermal energy from the environment, keeping the cryogenic fluid (16) at low temperatures. The cryogenic container (10) has a portability and a volume that permits its' use in applications from handheld electronics to vehicles such as alternative fueled vehicles (AFVs). A SMES storage system (24) includes a cryogenic container (26), and a SMES magnet (38) suspended within a cryogenic fluid (34). The SMES storage system 24 can also include a recharger (42) and a cryocooler (40) configured to recharge the cryogenic container (26) with the cryogenic fluid (34).
Abstract:
A superconducting transformer includes two pairs of axially extending windings (1, 2, 3 and 4). The windings are each in the from of a right cylindrical solenoid having a circular cross-section which are substantially concentrically nested. Each winding (1, 2, 3 and 4) includes a plurality of turns formed from superconducting tape. Each winding respectively includes a first end and a second end (5 and 6, 7 and 8, 9 and 10, and 11 and 12) which are configured for electrical connection with at least one of the other ends, and alternating power source (13), a load (14), or other passive or active electrical components. The ampere turns of a first pair of the windings (1 and 3), is substantially the same as the ampere turns of a second pair of the windings (2 and 4).
Abstract:
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).
Abstract:
Vorrichtung der Supraleitungstechnik mit Spuleneinrichtungen und Kühlvorrichtung sowie damit ausgestattetes Fahrzeug Es wird eine Vorrichtung (1) der Supraleitungstechnik angegeben mit - wenigstens zwei elektrischen Spuleneinrichtungen (3,5), von denen wenigstens eine als supraleitende Spuleneinrichtung (3,5) ausgestaltet ist, - und mit einer Kühlvorrichtung (7) zur Kühlung der Spuleneinrichtungen (3,5) mit Hilfe eines Kühlmittels (9). Die Vorrichtung (1) weist wenigstens eine erste Verbindungsleitung (11a) zwischen den beiden elektrischen Spuleneinrichtungen (3,5) auf, welche sowohl einen ersten elektrischen Leiter (13) zur elektrischen Verbindung der beiden Spuleneinrichtungen (3,5) als auch ein erstes Kühlmittelrohr (15) zum Transport von Kühlmittel (9) zwischen den beiden Spuleneinrichtungen (3,5) umfasst. Weiterhin wird ein Fahrzeug (25) mit einer solchen Vorrichtung (1) angegeben, welche als Antriebsvorrichtung ausgestaltet ist.
Abstract:
A cryostat for a superconducting device comprises a tank insulated with a non-vacuum material which may be a foam insulation material, and one or more cavities extending through the tank, through HTS coils for example which are vacuum insulated by for example concentric glass sleeves, through which cores, external to the cryostat, associated with the coils pass.
Abstract:
The present invention relates to high-temperature low alternating current (AC) loss superconducting coil (110A-C), to methods of fabricating such superconducting coils (110A-C) and to devices which utilize high temperature superconductor [HTS] tape coils such as transformer, motors, generators, etc.
Abstract:
A high voltage transformer (1) including: a cable (2) arranged in at least one loop and comprising electrically conducting means wound about a longitudinal axis of the cable to provide a first winding (4) having adjacent turns electrically insulated from each other and solid electrically insulating means (6-8) associated with and surrounding the first winding (4) and within which the electric field of the first winding is contained in use of the transformer; at least one second winding (3) inductively coupled to the first winding; and cooling means for cooling at least one of the windings.