Cryogenic Aluminum-Wound Generator Rotor Concept
Abstract
The outline of a design for a liquid hydrogen cooled generator rotor that could be used to fabricate a 20 megawatt cryogenic generator is presented. The armature of an existing 20 megawatt superconducting generator could be utilized in this new cryogenic generator concept without electrical modification and with minimum modification to its housing. A hydrogen cooled aluminum rotor would eliminate requirements for helium liquefiers/refrigerators, expensive superconductors and extra vacuum and magnetic shielding in superconducting generator rotors. Ideally the aluminum rotor could utilize the higher cryogenic temperatures of liquid hydrogen at 21K as conductor coolant and not require the fabrication techniques of n superconducting generator rotor. A most likely conductor candidate is high purity aluminum which has 1/500th its room temperature resistance at liquid hydrogen temperatures. Recent research has indicated the feasibility of fabricating high-purity aluminum conductors in a composite conductor form.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1985
- Accession Number
- ADA638518
Entities
People
- C. E. Oberly
- R. L. Schlicher
Organizations
- Air Force Research Laboratory