Title :
Design of a MgB2 Superconducting Synchronous Generator
Author :
Cheng Wen ; MinQiang Hu ; Haitao Yu ; Tianqi Hong ; Hao Chen ; Ronghai Qu ; Haiyang Fang
Author_Institution :
Sch. of Electr. Eng., Southeast Univ., Nanjing, China
Abstract :
A superconducting synchronous generator (SSG) is designed. The magnesium diboride (MgB2) superconducting coils are employed as the field windings. The stator is composed of conventional copper coils and iron core, while the rotor has no iron core. The whole cooling method is adopted in this paper. The temperature of stator area is 70~100 K. The operating temperature of rotor area is 20 K. The thermal barrier is not placed between the stator and the rotor as compared with the prior HTS generator, so the small air gap width would be possible. To study the electromagnetic characteristics of SSG, finite element method (FEM) is implemented to optimize the SSG and obtain the performance of the initial and optimized SSG. The results indicate that the optimized model has better performance.
Keywords :
air gaps; cooling; finite element analysis; magnesium compounds; rotors; stators; superconducting coils; synchronous generators; type II superconductors; FEM; HTS generator; MgB2; MgB2 superconducting synchronous generator; air gap; cooling method; electromagnetic characteristics; field windings; finite element method; magnesium diboride superconducting coils; stator; thermal barrier; Coils; Forging; High-temperature superconductors; Rotors; Stator cores; Stator windings; Cooling method; MgB2 field winding; Superconducting synchronous generator; cooling method; finite element method; superconducting synchronous generator;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2014.2385483
