Speaker
Description
In this paper, the motor-generator set was developed to test the various output performance of a 1-kW-class high-temperature superconducting generator (HTSG) which is charged by HTS contactless rotary excitation device (CRED). First of all, the various full components for 1-kW-class HTSG were manufactured and assembled including a salient rotor pole with HTS coils, rotating shafts, torque transferring structures, rotating and stationary parts for CRED, and liquid nitrogen cooling system. Then, this assembled machine was connected with induction motor which is driven and controlled by voltage source inverter and three phase resistive and inductive road bank. The rated operating current of HTS field winding can be excited by rotation of HTS strands attached on toroidal rotor head of CRED at rated charging speed. After field winding charging, 1-kW-class HTSG was tested in no-load and electrical load modes to measure output power characteristics.
Acknowledgement: This work was supported in part by the “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy (MOTIE), and by Korea Electric Power Corporation. (Nos. 20184030202200 and R18XA03)
