Title :
High output power reluctance electric motors with bulk HTS elements
Author :
Kovalev, L.K. ; Ilushin, K.V. ; Penkin, V.T. ; Kovalev, K.L. ; Larionoff, A.E. ; Koneev, S.M.-A. ; Modestov, K.A. ; Larionoff, S.A. ; Poltavets, V.N. ; Akimov, I.I. ; Alexandrov, V.V. ; Gawalek, W. ; Oswald, B. ; Krabbes, G.
Author_Institution :
Moscow State Aviation Inst., Russia
Abstract :
New types of electric machines with the rotors containing bulk HTS (YBCO and Bi-Ag) elements are presented. Different schematics of hysteresis, reluctance, "trapped field" and composed synchronous HTS machines are discussed. The two-dimensional mathematical models describing the processes in such types of HTS machines were developed on the basis of the theoretical analysis of the electrodynamic and hysteresis processes in the single-domain and policrystal YBCO ceramic samples and plate shape Bi-Ag elements. The test results of the series of hysteresis, reluctance, "trapped field" and composed with permanent magnet HTS motors with output power rating 0.1-18 kW and current frequency 50 Hz and 400 Hz are given. These results show that in the media of liquid nitrogen the specific output power per one weight unit of HTS motors is 4-7 times better then for conventional electric machines. Comparison of the theoretical and experimental characteristics of the developed HTS motors show that they are in good agreement. The test results for liquid nitrogen cryogenic pump system with hysteresis 500 W HTS motor are discussed. Several designs of new HTS motors operating in the media of liquid nitrogen with output power 125 kW (and more) and power factor more then 0.8 are described. Future applications of new types of HTS motors for aerospace technology, on-land industry and transport systems are discussed
Keywords :
barium compounds; bismuth alloys; copper compounds; high-temperature superconductors; machine testing; machine theory; reluctance motors; silver alloys; superconducting machines; yttrium compounds; 0.1 to 18 kW; 125 kW; 400 Hz; 50 Hz; 500 W; Bi-Ag; YBCO; YBa2Cu3O(7-δ); bulk HTS; cryogenic pump system; electrodynamic processes; electromagnetic process; high output power reluctance motors; high temperature superconducting elements; hysteresis; hysteresis processes; liquid nitrogen; permanent magnet HTS motors; plate shape Bi-Ag elements; polycrystal YBCO ceramic samples; power factor; reluctance; rotating magnetic field; rotors; single-domain YBCO ceramic samples; synchronous HTS machines; trapped field; two-dimensional mathematical models; Electric machines; Electric motors; High temperature superconductors; Hysteresis motors; Nitrogen; Permanent magnet motors; Power generation; Reluctance motors; Synchronous motors; Yttrium barium copper oxide;
Conference_Titel :
Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on
Conference_Location :
Shenyang
Print_ISBN :
7-5062-5115-9
DOI :
10.1109/ICEMS.2001.971831
