The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1994
Filed:
Aug. 21, 1992
Yehia M Eyssa, Tallahassee, FL (US);
Xianrui Huang, Lynchburg, VA (US);
Roger W Boom, Madison, WI (US);
Wisconsin Alumni Research Foundation, Madison, WI (US);
Abstract
A superconducting energy storage magnet is constructed for mounting in relatively shallow trenches or tunnels to provide superconductive energy storage for applications such as power system load leveling. The magnet includes composite superconductors arranged in substantially planar coil layers around a central axis. A first and second coil layer have an inner support structure between them to which the conductors of the layers are engaged. The inner support structure carries the magnetically induced forces on the conductors of the coils. The net radial magnetically induced force is opposed by the rigid structural material of the inner support structure and by support struts which extend from the periphery of the inner support structure to a surrounding support wall such as the wall of a trench. The conductors in each layer, and the inner support structure between them, have matching vertically (axially) undulating ripples over the circumference of the magnet. The ripples accommodate stresses imposed on the magnet during cool down from ambient temperatures to cryogenic temperatures, while the inner support structure is rigid radially to carry the magnetically induced radial forces on the conductors so that substantially no flexing of the conductors occurs during charge up and discharge of the magnet.