Risk Mitigation for High Temperature Superconducting Generators
Abstract
High temperature superconducting (HTS) motors and generators will enable high-efficiency, high power density naval propulsion, and compact electrical generators for weapons and ship systems. The second-generation high temperature superconductors (2G-HTS) based on yttrium-barium-copper- oxide (YBCO) coated conductor architectures have undergone a processing technology breakthrough that has led to manufacturability of long lengths of these materials, sufficient for demonstrations of large motors and generators. Ensuring superior fatigue properties of the HTS materials compatible with the life-cycle of naval machinery is a key issue. NRL has been working closely with superconductor manufacturer Superpower, Inc., electric motor manufacturer Baldor Reliance, General Dynamics Electric Boat Division, and Naval Surface Warfare Center Carderock Division (Philadelphia) on risk mitigation demonstrations for a 10 MW HTS generator design. NRL's responsibility in this collaboration is assessment of the reliability of HTS coil design, particularly with respect to thermomechanical fatigue associated with cooling/warming between room temperature and the cryogenic temperatures at which the machines operate.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2009
- Accession Number
- ADA525015
Entities
People
- R. L. Holtz
Organizations
- United States Naval Research Laboratory