A Novel Design of High-Temperature Superconducting DC Generator Based on Structural Variation

High-temperature superconducting (HTS) generator can improve efficiency, alleviate energy crisis and other advantages. At present, the main obstacle to the development of HTS generator is the quench of superconductivity caused by the AC loss. In order to reduce the AC loss, this paper proposes a novel design for high-temperature superconducting DC generator based on the Faraday's law of electromagnetic induction. Furthermore, in order to improve the magnetic field distribution and performance of the generator, the variation structure of double-stator permanent magnet, the variation structure of double-layer squirrel cage winding and the iron core variation structure without magnetic permeability were designed on the basis of the original generator structure, and the parameters of the generator were optimized based on the size of the air gap magnetic field. The finite element method is utilized to establish the generator model for case studies. Simulation results demonstrate the necessity of the design and the efficiency of the proposed structure.