Study of a superconducting motor with high specific torque

Study of a superconducting motor with high specific torque A. Rada, T. Lubin, J. Leveque, K. Berger, B. Douine, A. Rezzoug, S. Mezani, G. Didier, M. Hinaje, D. Netter Universite de Lorraine, Groupe de Recherche en Electrotechnique et Electronique de Nancy, BP 70239, 54506 Vandoeuvre les nancy Abstract We present a new kind of superconducting inductor for the synchronous machine. This inductor is composed of a two superconducting coils having the same axis and fed by a currents with the same direction. A superconducting bulk is used in order to achieve a variation of the flux density in the air-gap. Due to the superconducting coil the value of the magnetic field in the airgap could be upper than 4T. With the proposed superconducting inductor, we obtain a two-poles electrical machine with an important specific torque and specific power. Therefore these kind of superconducting motor could be sized for aircraft application.. Introduction Improving the performance of electrical machines is a big challenge for decades [1-5]. One of the most important parameters to improve machine performance is the generation of a high magnetic field by an inductor. Superconductors are very attractive