Abstract
This paper describes a series of experiments investigating the operational characteristics of a high-Tc superconducting synchronous motor of five to six hundred watts capacity. In this experiment, AC 220 V stator phase voltage and DC 4 A excitation current are used, and the synchronous speed runs at 1800 rpm. Hall sensors are installed on the pole face and at the side of the Ag/Bi-2223 high-Tc superconducting tape in order to analyze the effect of the time-varying magnetic field on the motor performance when the load changes its value. The experimental observations are compared with the theoretical predictions.
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