Development of the Shaped Field Superconductive Motor.
Abstract
A new superconductive direct-current machine, called the 'shaped field machine,' has been designed and constructed. The laboratory unit utilizes the flux shaping properties of ferromagnetic materials in an unconventional arrangement to permit a high power density, high efficienty, magnetically shielded design in a geometry ideally suited to propulsion motor applications. The nominal 400-horsepower, 50-centimeter diameter motor, now undergoing laboratory evaluation, is expected to demonstrate an efficiency of 96% to 98% and a growth potential exceeding 5000 horsepower per cubic meter. A 60-kilogauss superconducting solenoidal magnet is the innermost machine element and is surrounded by a ferromagnetic shield. A stainless steel rotor with banded copper drums and liquid metal brushes operates in the magnet/shield annulus. The magnetic circuit is designed to maximize flux utilization and minimize brush losses. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1974
- Accession Number
- AD0916614
Entities
People
- David W Taylor
- M. J. Cannell
- T. J. Doyle