Aluminum Stabilized Conductor in a Large Cryostable SMES Magnet
An aluminum stabilized cryostable conductor concept for the 30Mw, 1800MJ superconducting magnetic energy storage (SMES) system to be installed at Anchorage Municipal Light and Power (ML&P) is presented. Mid- and large scale commercial SMES magnets for utility applications have been actively studied at Babcock & Wilcox. Co-extruded aluminum stabilized conductor has been considered as one of the major alternatives for the ML&P SMES application because of its maturity in extrusion process, high RRR, relative low raw material cost and light in weight. However, many significant technical issues have been identified associated with using aluminum conductor in high field and high energy magnets. Critical design considerations are discussed in this paper.
KeywordsSuperconducting Magnetic Energy Storage Cyclic Plastic Strain Aluminum Conductor Picket Fence Residual Hoop Stress
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- 2.S. Kral, M. Aslam, P.F. Ribeiro, X. Huang, M. Xu, “Superconducting Power Delivery Systems For Transmission & Distributions”, Presented at the 57th American Power Conference, Chicago, IL, April 18–20, 1995Google Scholar
- 3.K.T. Hartwig, G.S. Yuan “Strength and Resistivity Changes Caused by Cyclic Strain at 4.2K in Pure Aluminum”, Cryogenic Materials ’88, Vol.2, Structural Materials, 1988Google Scholar
- 4.Y. Wang, “Structural Design of Superconducting Energy Storage Solenoidal Magnets”, Presented at 1997 CEC/ICMC Conference.Google Scholar