【摘要】 针对海上风电大容量化发展趋势及传统发电机面临的体积、重量与成本瓶颈，本文提出一种基于静态密封方案的5 MW低温区定子励磁超导风力发电机。采用铌钛(NbTi)超导线材构建准Spoke型励磁定子，结合双定子磁场调制电机拓扑结构，实现低温超导磁体静态冷却与无刷励磁。该新型电机的额定功率密度为相近尺寸永磁直驱电机的1.82倍；相比于美国通用电气公司超导电机，其励磁磁极单价和电磁力仅为2.21%和1.14%。研制了万安匝级传导冷却低温区超导磁体，电流密度600 A/mm~2,温升约0.7 K。本研究为海上风电大容量化发展提供了超导解决方案。更多还原

【Abstract】 Addressing the challenges of volume, weight and cost limitations in conventional generators for large-scale offshore wind power development, this paper proposes a 5 MW cryogenic stator excitation superconducting wind turbine generator based on a static sealing scheme. The design incorporates niobium-titanium(NbTi) superconducting wires to construct a quasi-Spoke type excitation stator, integrated with a dual-stator magnetic field modulation topology to achieve cryogenic cooling and brushless excitation. The generator demonstrates a rated power density 1.82 times higher than permanent magnet direct-drive generators of comparable dimensions. Compared to GE’s superconducting solution, this design reduces excitation pole unit cost and electromagnetic forces to merely 2.21% and 1.14% respectively. A conduction-cooled cryogenic superconducting magnet was successfully developed, achieving a current density of 600 A/mm~2 with minimal temperature rise(0.7 K). This work provides an advanced superconducting solution for large-capacity offshore wind power development.更多还原