Abstract
Novel types of electric HTS motors with the rotor containing bulk YBCO and Bi–Ag elements are presented. Different schematics of hysteresis, reluctance “trapped field” and composed HTS motors are discussed. Two-dimensional mathematical models describing the processes in these types of HTS machines were developed on the basis of a theoretical analysis of the electrodynamic and hysteresis processes in multi-domain and single-domain HTS ceramic samples. The test results of these HTS motors with output power 1–37 kW and current frequencies 50 and 400 Hz are given. The results show that in liquid nitrogen the specific output power per one weight unit is 4–5 times better then for conventional electric machines. The design of a new high power HTS motor operating in the liquid nitrogen with output power 200 kW (and more) is discussed. Future applications of new types of HTS motors for airspace and on-land industry and transport systems are discussed.
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