Researchers from the Technology Foundation STW and the University of Twente, in cooperation with Smit Transformatoren and Smit Draad, have developed a prototype coil for a superconducting transformer which is not only light and compact but also energy-efficient. A keen interest has already been expressed by several companies.
The coil is made from superconducting wires, insulated using a newly patented method. Furthermore, together with Smit Transformatoren the researchers have developed a method to wind coils from the fragile conductor.
The superconducting wires are manufactured from a ceramic material BSCCO (pronounced `bisko`). This so-called high-temperature superconductor only allows current to flow without resistance when the material is cooled to -196 degrees celcius. The new insulation had to be able to withstand such low temperatures. Therefore the researchers chose a polyimide-film.
Michel Philippens | alphagalileo
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