摘要
超导电机技术为减小大型直驱风力发电机体积、质量和成本提供了一种有效途径。提出了一种海上超导直驱风力发电机系统,其定子采用低温超导线圈产生励磁磁场,转子为常规的铜制电枢绕组。首先介绍了该电机的主要参数以及拓扑结构的选择,并分析了超导电机电磁设计过程中所需考虑的关键问题;之后介绍了超导电机的定转子设计方案,包括电磁设计、机械结构、转子风冷系统、超导定子的低温系统以及制冷系统等;最后估算了所设计超导电机的质量以及成本,并与相同功率等级的永磁直驱风力发电机进行了对比,结果表明所设计的超导电机的质量比永磁直驱风力发电机质量减轻约46%,而其初始材料成本仅为永磁直驱电机的71%。
Superconducting generator provides an effective way to reduce the size, weight and cost of large-scale wind genertors. This paper presents the design of an offshore direct-drive superconducting wind generator （SCWG）. It has a stator with low temperature su- perconducting （LTS） field winding and a rotor with normal copper armature winding. First, the main design specifications and topolo- gy of the generator are introduced, and some design considerations on SCWGs are discussed. Then the stator and rotor design of the generator are presented, including electromagnetic design, mechanical design, the rotor forced-air cooling system design and cryogenic and refrigeration system design for the superconducting stator, etc. Finally the weight and cost of the proposed SCWG are estimated and compared with that of a direct-drive permanent-magnet wind generator （PMWG） of the same power. It is found that the proposed SCWG is 46% lighter than the PMWG, while the initial material cost is only about 71% of that of the PMWG.
出处
《南方电网技术》
北大核心
2015年第12期70-79,共10页
Southern Power System Technology
基金
国家高技术研究发展计划(863计划)项目(2012AA052302)~~
关键词
海上风力发电
超导直驱风力发电机
低温超导
offshore wind generation
direct-drive superconducting wind generator（SCWG）
low temperature superconductor
