Super Conducting Electrical Machines

Abstract

This paper introduces the advancement in electrical machines. An electrical machine runs on electricity. Every machine offers losses. Losses are reducing the efficiency of the machine. Now a day there is a growth of technology till now there are no 100% efficient electric machines. In order to increase the efficiency of machine there is a way to reduce the loss governs by the machine. The superconducting electrical machines offers high efficiency and so many advantages than ordinary electrical machines. At present the materials used in magnetic circuits are copper and aluminum. The copper is a good conductor and offers losses. The aluminum also a good conductor and it provides high efficiency than copper but the mechanical strength is poor. The Ceramic superconductor such as
YBCO (composed of Yttrium, Barium, Copper and Oxygen) is high critical temperature ceramic superconductor having a transition temperature well above the boiling point of liquid nitrogen. It offers zero resistance and high mechanical strength. Researchers have estimated that the superconducting electrical machines provide more than 98 percent efficiency than ordinary electrical machines. The tremendous cost, size, weight and efficiency benefits of superconducting machines will significantly change the dynamics of the machine manufacturing industry and the machine end user market.