Design Study of 15 MW Superconducting Wind Turbine Generators Based on NSGA-II and FEA
瞿 貝兒, 寺尾 悠, 大崎 博之 （東大）
Abstract:The superconducting wind turbine generator of 10MW and higher output class is one of the key solutions for larger size wind power systems for higher output density and efficiency. Although new permanent magnet generators are being designed, superconducting technology applied in generators is still the current development trend of large scale wind turbine generators.
Researches on this topic generally include fully superconducting generators(FSCG) and partial superconducting generators. FSCG consists of field windings and armature windings both made by superconducting materials, however, a key issue for most applications of fully superconductivity generators involves AC losses. When generators are operating at the grid frequency, AC loss mostly affects the cryogenic load and hence the overall efficiency of the application. Therefore, in recent years, researches on FSCGs have focused on reducing AC loss and generator mass.
In my proposed presentation, I will discuss about the main factors which affect AC loss and the output power of 15 MW FSCG, and then establish the relationship between these two objective function(output power and AC loss) and main factors I mentioned above. I will show a certain equilibrium point obtained to make the output power larger and the AC loss smaller in the meanwhile with the help of heuristic algorithms like NSGA-ii, and then use JMAG to analysis the magnet distribution of FSCG model and in turn, modify the parameters of FSCG and get better design.