Design study of small-scale to large-scale superconducting generators

A design program of superconducting generators (SCG´s) taking accounts of the component size of SCG´s and the performance of low-temperature superconductors (LTS) and high-temperature superconductors (HTS) was developed. Fundamental designs of large-scale (200-1400 MW) SCG´s employing LTS and HTS were carried out. The resulting effects of various machine parameters such as synchronous reactance, rotor diameter and maximum flux density on the machines´ performance such as machine weight and efficiency were clarified. Furthermore, fundamental design of small-scale (10 MW) SCG´s were carried out and the influence of adopting magnetic rotors and retrofit stators together with the effects of machine parameters were also clarified.