RESEARCH INVESTIGATION OF MAGNETIC AND ELECTRIC FORCES FOR ROTATING SHAFT SUSPENSION
Abstract
Efforts were made to achieve a noncontacting bearing system for the armatures of rotating electrical machinery by means of magnetic forces. A bearing system was previously designed in which the radial position of the shaft was maintained by passive magnetic fields. To continue this work two rotors were built and tested. The best result gave a ratio of axial to radial force gradient of about 7 to 1. Fast electromagnets were built, and tested. Several materials were compared. Satisfactory results are expected from the axial positioning servo system with only current feedback in the amplifiers. In extending the effort, preliminary considerations of three radially active magnetic systems are given: (1) a permanent magnet rotor type, (2) a local acting iron rotor type, and (3) a magnetic resonant type. Also, the basic calculations for a resonant electric system are given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1962
- Accession Number
- AD0277753
Entities
People
- B.j. Gilpin
Organizations
- University of Virginia